XCEL ENERGY INC Form 10-Q Quarterly Report Filed 2018-04-27

(Amounts in Millions) ^(a)(b)

March 31, 2018

Dec. 31, 2017

Megawatt hours of electricity

Million British thermal units of natural gas

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)



x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018



¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 001-3034

Xcel Energy Inc.

(Exact name of registrant as specified in its charter)



Minnesota		41-0448030
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

414 Nicollet Mall
Minneapolis, Minnesota		55401
(Address of principal executive offices)		(Zip Code)

(612) 330-5500

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. x Yes ¨ No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 and Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). x Yes ¨ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.



Large accelerated filer x		Accelerated filer ¨
Non-accelerated filer ¨		Smaller reporting company ¨
(Do not check if smaller reporting company)		Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). ¨ Yes x No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.



Class		Outstanding at April 23, 2018
Common Stock, $2.50 par value		508,856,950 shares

TABLE OF CONTENTS



PART I	FINANCIAL INFORMATION
Item 1 —	Financial Statements (unaudited)	3
	CONSOLIDATED STATEMENTS OF INCOME	3
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	4
	CONSOLIDATED STATEMENTS OF CASH FLOWS	5
	CONSOLIDATED BALANCE SHEETS	6
	CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS’ EQUITY	7
	NOTES TO CONSOLIDATED FINANCIAL STATEMENTS	8
Item 2 —	Management’s Discussion and Analysis of Financial Condition and Results of Operations	32
Item 3 —	Quantitative and Qualitative Disclosures about Market Risk	50
Item 4 —	Controls and Procedures	50

PART II	OTHER INFORMATION
Item 1 —	Legal Proceedings	50
Item 1A —	Risk Factors	50
Item 2 —	Unregistered Sales of Equity Securities and Use of Proceeds	51
Item 6 —	Exhibits	51

SIGNATURES		52

	Certifications Pursuant to Section 302	1
	Certifications Pursuant to Section 906	1
	Statement Pursuant to Private Litigation	1

This Form 10-Q is filed by Xcel Energy Inc. Xcel Energy Inc. wholly owns the following subsidiaries: Northern States Power Company, a Minnesota corporation (NSP-Minnesota); Northern States Power Company, a Wisconsin corporation (NSP-Wisconsin); Public Service Company of Colorado (PSCo); and Southwestern Public Service Company (SPS). Xcel Energy Inc. and its consolidated subsidiaries are also referred to herein as Xcel Energy. NSP-Minnesota, NSP-Wisconsin, PSCo and SPS are also referred to collectively as utility subsidiaries. The electric production and transmission system of NSP-Minnesota and NSP-Wisconsin, which is operated on an integrated basis and is managed by NSP-Minnesota, is referred to collectively as the NSP System. Additional information on the wholly owned subsidiaries is available on various filings with the Securities and Exchange Commission (SEC).

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PART I — FINANCIAL INFORMATION

Item 1 — FINANCIAL STATEMENTS

XCEL ENERGY INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (amounts in millions, except per share data)

	Three Months Ended March 31
	2018			2017
Operating revenues
Electric	$	2,270		$	2,299
Natural gas	662			626
Other	19			21
Total operating revenues	2,951			2,946

Operating expenses
Electric fuel and purchased power	932			925
Cost of natural gas sold and transported	375			365
Cost of sales — other	8			9
Operating and maintenance expenses	557			580
Conservation and demand side management expenses	71			68
Depreciation and amortization	383			365
Taxes (other than income taxes)	145			142
Total operating expenses	2,471			2,454

Operating income	480			492

Other income, net	1			1
Equity earnings of unconsolidated subsidiaries	6			8
Allowance for funds used during construction — equity	23			14

Interest charges and financing costs
Interest charges — includes other financing costs of $6 and $6, respectively	171			166
Allowance for funds used during construction — debt	(11		)	(7		)
Total interest charges and financing costs	160			159

Income before income taxes	350			356
Income taxes	59			117
Net income	$	291		$	239

Weighted average common shares outstanding:
Basic	509			508
Diluted	509			509

Earnings per average common share:
Basic	$	0.57		$	0.47
Diluted	0.57			0.47

Cash dividends declared per common share	$	0.38		$	0.36

See Notes to Consolidated Financial Statements

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XCEL ENERGY INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (amounts in millions)

	Three Months Ended March 31
	2018		2017
Net income	$	291	$	239

Other comprehensive income

Pension and retiree medical benefits:
Amortization of losses included in net periodic benefit cost, net of tax of $0 and $1, respectively	1		1

Derivative instruments:
Reclassification of losses to net income, net of tax of $0 and $1, respectively	—		1


Other comprehensive income	1		2
Comprehensive income	$	292	$	241

See Notes to Consolidated Financial Statements

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XCEL ENERGY INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (amounts in millions)

	Three Months Ended March 31
	2018			2017
Operating activities
Net income	$	291		$	239
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	387			369
Nuclear fuel amortization	31			31
Deferred income taxes	59			194
Allowance for equity funds used during construction	(23		)	(14		)
Equity earnings of unconsolidated subsidiaries	(6		)	(8		)
Dividends from unconsolidated subsidiaries	9			12
Share-based compensation expense	6			18
Other, net	(1		)	4
Changes in operating assets and liabilities:
Accounts receivable	(71		)	3
Accrued unbilled revenues	159			174
Inventories	118			88
Other current assets	1			(77		)
Accounts payable	(42		)	(144		)
Net regulatory assets and liabilities	147			18
Other current liabilities	(17		)	(43		)
Pension and other employee benefit obligations	(146		)	(149		)
Change in other noncurrent assets	2			—
Change in other noncurrent liabilities	(17		)	3
Net cash provided by operating activities	887			718

Investing activities
Utility capital/construction expenditures	(883		)	(749		)
Allowance for equity funds used during construction	23			14
Purchases of investment securities	(185		)	(173		)
Proceeds from the sale of investment securities	179			168
Investments in unconsolidated subsidiaries and other	(3		)	(3		)
Other, net	(3		)	(5		)
Net cash used in investing activities	(872		)	(748		)

Financing activities
Proceeds from short-term borrowings, net	211			213
Dividends paid	(175		)	(173		)
Other	(18		)	(21		)
Net cash provided by financing activities	18			19

Net change in cash and cash equivalents	33			(11		)
Cash and cash equivalents at beginning of period	83			85
Cash and cash equivalents at end of period	$	116		$	74

Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	$	(181	)	$	(174	)

Supplemental disclosure of non-cash investing and financing transactions:
Property, plant and equipment additions in accounts payable	$	241		$	186
Issuance of common stock for equity awards	20			12

See Notes to Consolidated Financial Statements

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XCEL ENERGY INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (UNAUDITED) (amounts in millions, except share and per share data)

	March 31, 2018			Dec. 31, 2017
Assets
Current assets
Cash and cash equivalents	$	116		$	83
Accounts receivable, net	868			797
Accrued unbilled revenues	605			764
Inventories	492			610
Regulatory assets	422			424
Derivative instruments	28			44
Prepaid taxes	63			68
Prepayments and other	188			183
Total current assets	2,782			2,973

Property, plant and equipment, net	34,679			34,329

Other assets
Nuclear decommissioning fund and other investments	2,404			2,397
Regulatory assets	2,965			3,005
Derivative instruments	49			48
Other	280			278
Total other assets	5,698			5,728
Total assets	$	43,159		$	43,030

Liabilities and Equity
Current liabilities
Current portion of long-term debt	$	457		$	457
Short-term debt	1,025			814
Accounts payable	1,027			1,243
Regulatory liabilities	270			239
Taxes accrued	544			448
Accrued interest	147			174
Dividends payable	193			183
Derivative instruments	30			29
Other	429			501
Total current liabilities	4,122			4,088

Deferred credits and other liabilities
Deferred income taxes	3,905			3,845
Deferred investment tax credits	57			58
Regulatory liabilities	5,141			5,083
Asset retirement obligations	2,504			2,475
Derivative instruments	120			126
Customer advances	200			193
Pension and employee benefit obligations	884			1,042
Other	143			145
Total deferred credits and other liabilities	12,954			12,967

Commitments and contingencies
Capitalization
Long-term debt	14,522			14,520
Common stock — 1,000,000,000 shares authorized of $2.50 par value; 508,661,859 and 507,762,881 shares outstanding at March 31, 2018 and Dec. 31, 2017, respectively	1,272			1,269
Additional paid in capital	5,903			5,898
Retained earnings	4,510			4,413
Accumulated other comprehensive loss	(124		)	(125		)
Total common stockholders’ equity	11,561			11,455
Total liabilities and equity	$	43,159		$	43,030

See Notes to Consolidated Financial Statements

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XCEL ENERGY INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS’ EQUITY (UNAUDITED) (amounts in millions, shares in thousands)

	Common Stock Issued							Retained Earnings			Accumulated Other Comprehensive Loss			Total Common Stockholders’ Equity
	Shares		Par Value		Additional Paid In Capital			Retained Earnings			Accumulated Other Comprehensive Loss			Total Common Stockholders’ Equity
Three Months Ended March 31, 2018 and 2017
Balance at Dec. 31, 2016	507,223		$	1,268	$	5,881		$	3,982		$	(110	)	$	11,021
Net income								239						239
Other comprehensive income											2			2
Dividends declared on common stock								(184		)				(184		)
Issuances of common stock	611		1		4									5
Repurchases of common stock	(71	)	—		(3		)							(3		)
Share-based compensation					(9		)	(1		)				(10		)
Balance at March 31, 2017	507,763		$	1,269	$	5,873		$	4,036		$	(108	)	$	11,070

Balance at Dec. 31, 2017	507,763		$	1,269	$	5,898		$	4,413		$	(125	)	$	11,455
Net income								291						291
Other comprehensive income											1			1
Dividends declared on common stock								(194		)				(194		)
Issuances of common stock	921		3		14									17
Repurchases of common stock	(22	)	—		(1		)							(1		)
Share-based compensation					(8		)	—						(8		)
Balance at March 31, 2018	508,662		$	1,272	$	5,903		$	4,510		$	(124	)	$	11,561

See Notes to Consolidated Financial Statements

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XCEL ENERGY INC. AND SUBSIDIARIES

Notes to Consolidated Financial Statements (UNAUDITED)

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly, in accordance with accounting principles generally accepted in the United States of America (GAAP), the financial position of Xcel Energy Inc. and its subsidiaries as of March 31, 2018 and Dec. 31, 2017; the results of its operations, including the components of net income and comprehensive income, and changes in stockholders’ equity for the three months ended March 31, 2018 and 2017; and its cash flows for the three months ended March 31, 2018 and 2017. All adjustments are of a normal, recurring nature, except as otherwise disclosed. Management has also evaluated the impact of events occurring after March 31, 2018 up to the date of issuance of these consolidated financial statements. These statements contain all necessary adjustments and disclosures resulting from that evaluation. The Dec. 31, 2017 balance sheet information has been derived from the audited 2017 consolidated financial statements included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017. These notes to the consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for Quarterly Reports on Form 10-Q. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP on an annual basis have been condensed or omitted pursuant to such rules and regulations. For further information, refer to the consolidated financial statements and notes thereto, included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, filed with the SEC on Feb. 23, 2018. Due to the seasonality of Xcel Energy’s electric and natural gas sales, interim results are not necessarily an appropriate base from which to project annual results.


1.	Summary of Significant Accounting Policies

The significant accounting policies set forth in Note 1 to the consolidated financial statements in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of accounting policies and are incorporated herein by reference.


2.	Accounting Pronouncements

Recently Issued

Leases — In February 2016, the Financial Accounting Standards Board (FASB) issued Leases, Topic 842 (Accounting Standards Update (ASU) No. 2016-02), which for lessees requires balance sheet recognition of right-of-use assets and lease liabilities for most leases. This guidance will be effective for interim and annual reporting periods beginning after Dec. 15, 2018. Xcel Energy has not yet fully determined the impacts of implementation. However, adoption is expected to occur on Jan. 1, 2019 utilizing the practical expedients provided by the standard and proposed in Targeted Improvements, Topic 842 (Proposed ASU 2018-200). As such, agreements entered into prior to Jan. 1, 2019 that are currently considered leases are expected to be recognized on the consolidated balance sheet, including contracts for use of office space, equipment and natural gas storage assets, as well as certain purchased power agreements (PPAs) for natural gas-fueled generating facilities. Xcel Energy expects that similar agreements entered into after Dec. 31, 2018 will generally qualify as leases under the new standard.

Recently Adopted

Revenue Recognition — In May 2014, the FASB issued Revenue from Contracts with Customers, Topic 606 (ASU No. 2014-09), which provides a new framework for the recognition of revenue. Xcel Energy implemented the guidance on a modified retrospective basis on Jan. 1, 2018. Results for reporting periods beginning after Dec. 31, 2017 are presented in accordance with Topic 606, while prior period results have not been adjusted and continue to be reported in accordance with prior accounting guidance. Other than increased disclosures regarding revenues related to contracts with customers, the implementation did not have a significant impact on Xcel Energy’s consolidated financial statements. For related disclosures, see Note 14.

Classification and Measurement of Financial Instruments — In January 2016, the FASB issued Recognition and Measurement of Financial Assets and Financial Liabilities, Subtopic 825-10 (ASU No. 2016-01), which eliminated the available-for-sale classification for marketable equity securities and also replaced the cost method of accounting for non-marketable equity securities with a model for recognizing impairments and observable price changes. Under the new standard, other than when the consolidation or equity method of accounting is utilized, changes in the fair value of equity securities are recognized in earnings. Xcel Energy implemented the guidance on Jan. 1, 2018. As a result of application of accounting principles for rate regulated entities, changes in the fair value of the securities in the nuclear decommissioning fund, historically classified as available-for-sale, continue to be deferred to a regulatory asset, and the overall adoption impacts were not material.

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Presentation of Net Periodic Benefit Cost — In March 2017, the FASB issued Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, Topic 715 (ASU No. 2017-07), which establishes that only the service cost element of pension cost may be presented as a component of operating income in the income statement. Also under the guidance, only the service cost component of pension cost is eligible for capitalization. As a result of application of accounting principles for rate regulated entities, a similar amount of pension cost, including non-service components, will be recognized consistent with the historical ratemaking treatment, and the impacts of adoption will be limited to changes in classification of non-service costs in the consolidated statement of income. Xcel Energy implemented the new guidance on Jan. 1, 2018, and as a result, $6 million of pension costs were retrospectively reclassified from operating and maintenance expenses to other income, net on the consolidated income statement for the three months ended March 31, 2017. Under a practical expedient permitted by the standard, Xcel Energy used benefit cost amounts disclosed for prior periods as the basis for retrospective application.


3.	Selected Balance Sheet Data



(Millions of Dollars)	March 31, 2018			Dec. 31, 2017
Accounts receivable, net
Accounts receivable	$	921		$	849
Less allowance for bad debts	(53		)	(52		)
	$	868		$	797



(Millions of Dollars)	March 31, 2018		Dec. 31, 2017
Inventories
Materials and supplies	$	311	$	311
Fuel	144		186
Natural gas	37		113
	$	492	$	610



(Millions of Dollars)	March 31, 2018			Dec. 31, 2017
Property, plant and equipment, net
Electric plant	$	39,348		$	39,016
Natural gas plant	5,855			5,800
Common and other property	2,027			2,013
Plant to be retired ^(a)	11			11
Construction work in progress	2,339			2,087
Total property, plant and equipment	49,580			48,927
Less accumulated depreciation	(15,276		)	(15,000		)
Nuclear fuel	2,701			2,697
Less accumulated amortization	(2,326		)	(2,295		)
	$	34,679		$	34,329


^(a)	In the third quarter of 2017, PSCo early retired Valmont Unit 5 and converted Cherokee Unit 4 from a coal-fueled generating facility to natural gas. PSCo also expects Craig Unit 1 to be early retired in approximately 2025. Amounts are presented net of accumulated depreciation.


4.	Income Taxes

Except to the extent noted below, Note 6 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017 appropriately represents, in all material respects, the current status of other income tax matters, and is incorporated herein by reference.

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Total income tax expense from operations differs from the amount computed by applying the statutory federal income tax rate to income before income tax expense. The following reconciles such differences:



	Three Months Ended March 31
	2018		2017
Federal statutory rate	21.0	%	35.0	%
State tax, net of federal tax effect	4.9	%	4.0	%
Increases (decreases) in tax from:
Wind production tax credits	(6.0	)	(4.0	)
Regulatory differences - ARAM^(a)	(5.8	)	(0.1	)
Regulatory differences - ARAM deferral ^(b)	5.4		—
Regulatory differences - other utility plant items	(1.0	)	(0.5	)
Other, net	(1.6	)	(1.5	)
Effective income tax rate	16.9	%	32.9	%


^(a)	The average rate assumption method (ARAM); a method to flow back excess deferred taxes to customers.


^(b)	As we receive direction from our regulatory commissions regarding the return of excess deferred taxes (to our customers resulting from the TCJA), the ARAM deferral may decrease during the year, which would result in a reduction to tax expense with a corresponding reduction to revenue.

Federal Audits — Xcel Energy files a consolidated federal income tax return. The statute of limitations applicable to Xcel Energy’s federal income tax returns expire as follows:



Tax Year(s)		Expiration
2009 - 2011		December 2018
2012 - 2013		October 2018
2014		September 2018
2015		September 2019
2016		September 2020

In 2012, the Internal Revenue Service (IRS) commenced an examination of tax years 2010 and 2011, including the 2009 carryback claim. The IRS proposed an adjustment to the federal tax loss carryback claims and in 2015, the IRS forwarded the issue to the Office of Appeals (Appeals). In 2017, Xcel Energy and Appeals reached an agreement and the benefit related to the agreed upon portions was recognized. As of March 31, 2018, the case has been forwarded to the Joint Committee on Taxation.

In the third quarter of 2015, the IRS commenced an examination of tax years 2012 and 2013. In the third quarter of 2017, the IRS concluded the audit of tax years 2012 and 2013 and proposed an adjustment that would impact Xcel Energy’s net operating loss (NOL) and effective tax rate (ETR). After evaluating the proposed adjustment, Xcel Energy filed a protest with the IRS. Xcel Energy anticipates the issue will be forwarded to Appeals. As of March 31, 2018, Xcel Energy has recognized its best estimate of income tax expense that will result from a final resolution of this issue; however, the outcome and timing of a resolution is unknown.

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State Audits — Xcel Energy files consolidated state tax returns based on income in its major operating jurisdictions of Colorado, Minnesota, Texas, and Wisconsin, and various other state income-based tax returns. As of March 31, 2018, Xcel Energy’s earliest open tax years that are subject to examination by state taxing authorities in its major operating jurisdictions were as follows:



State		Year
Colorado		2009
Minnesota		2009
Texas		2009
Wisconsin		2012


•	In 2016, Minnesota began an audit of years 2010 through 2014. As of March 31, 2018, Minnesota had not proposed any material adjustments;


•	In 2016, Wisconsin began an audit of years 2012 and 2013. As of March 31, 2018, Wisconsin had not proposed any material adjustments; and


•	As of March 31, 2018, there were no other state income tax audits in progress.

Unrecognized Benefits — The unrecognized tax benefit balance includes permanent tax positions, which if recognized would affect the annual ETR. In addition, the unrecognized tax benefit balance includes temporary tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. A change in the period of deductibility would not affect the ETR but would accelerate the payment of cash to the taxing authority to an earlier period.

A reconciliation of the amount of unrecognized tax benefit is as follows:



(Millions of Dollars)	March 31, 2018		Dec. 31, 2017
Unrecognized tax benefit — Permanent tax positions	$	21	$	20
Unrecognized tax benefit — Temporary tax positions	19		19
Total unrecognized tax benefit	$	40	$	39

The unrecognized tax benefit amounts were reduced by the tax benefits associated with NOL and tax credit carryforwards. The amounts of tax benefits associated with NOL and tax credit carryforwards are as follows:



(Millions of Dollars)	March 31, 2018			Dec. 31, 2017
NOL and tax credit carryforwards	$	(32	)	$	(31	)

It is reasonably possible that Xcel Energy’s amount of unrecognized tax benefits could significantly change in the next 12 months as the IRS Appeals progresses and audits resume, the Minnesota and Wisconsin audits progress, and other state audits resume. As the IRS Appeals and Minnesota and Wisconsin audits progress, it is reasonably possible that the amount of unrecognized tax benefit could decrease up to approximately $26 million.

The payable for interest related to unrecognized tax benefits is partially offset by the interest benefit associated with NOL and tax credit carryforwards. The payables for interest related to unrecognized tax benefits at March 31, 2018 and Dec. 31, 2017 were not material. No amounts were accrued for penalties related to unrecognized tax benefits as of March 31, 2018 or Dec. 31, 2017.


5.	Rate Matters

Except to the extent noted below, the circumstances set forth in Note 12 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of other rate matters, and are incorporated herein by reference.

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Tax Reform — Regulatory Proceedings

The specific impacts of the Tax Cuts and Jobs Act (TCJA) on customer rates are subject to regulatory approval. Each of the states in Xcel Energy’s service areas have opened dockets to address the impacts of the TCJA. Xcel Energy has made filings and is working with various stakeholders in its jurisdictions to determine the appropriate treatment for the TCJA.

NSP-Minnesota — The Minnesota Public Utility Commission (MPUC) opened a TCJA docket and issued a request for information on the impacts of the TCJA in January 2018. In March 2018, the Minnesota Department of Commerce (DOC) recommended adjusting rates or implementing refunds for the current tax impacts and incorporating the deferred tax impacts in each utility’s next rate case.

In April 2018, NSP-Minnesota filed an update of the estimated impact of the TCJA, which reflected an overall reduction in 2018 revenue requirements of approximately $136 million for electric and $7 million for natural gas. The filing also proposed recommended options for delivering tax reform benefits to customers. The proposed electric options included: customer refunds and rider impacts of $68 million, deferral of $44 million to allow for a rate case stay-out for 2020, acceleration of depreciation for the King coal plant of $22 million and low income program funding of $2 million. The proposed natural gas options included customer refunds and rider impacts of $3 million, with the remaining TCJA benefits deferred to mitigate increased costs in the next natural gas rate case. A MPUC decision is expected later in 2018.

Dockets have also been opened in North Dakota and South Dakota. In February 2018, NSP-Minnesota proposed using the reduced revenue requirements from the TCJA to defer planned future rate filings in both jurisdictions.

NSP-Wisconsin — In January 2018, the Public Service Commission of Wisconsin (PSCW) issued an order requiring public utilities to apply deferred accounting for the impacts of the TCJA. In March 2018, NSP-Wisconsin filed recommended plans for Wisconsin, which for electric operations included an option for an immediate bill credit for a portion of the tax savings in 2018 and 2019, while deferring the remainder until NSP-Wisconsin’s 2020 electric rate case. For the natural gas operations, NSP-Wisconsin proposed using the TCJA to reduce the unamortized regulatory asset for the Ashland/Northern States Power Lakefront Superfund Site (the Site) clean-up. A PSCW decision on the regulatory treatment of the TCJA is anticipated later in 2018.

For Michigan, NSP-Wisconsin has reached settlement in its electric rate case, which reflects the impacts of the TCJA, and has proposed customer refunds for natural gas operations.

PSCo — In January 2018, the Colorado Public Utilities Commission (CPUC) opened a statewide TCJA proceeding and ordered deferred accounting for all investor-owned utilities.

•

Colorado 2017 Multi-Year Natural Gas Rate Case - In February 2018, the administrative law judge (ALJ) approved PSCo and the CPUC Staff’s settlement agreement addressing the TCJA, which includes a $20 million reduction to provisional rates effective March 1, 2018. A final true-up, including any outcomes associated with the statewide proceeding, would provide customers the full net benefit of the TCJA effective January 2018. A CPUC decision is pending.

•

Colorado Electric - In April 2018, PSCo, the CPUC Staff and the OCC filed a TCJA settlement agreement with the CPUC that identified a reduction in electric revenue requirements of approximately $101 million for the TCJA in 2018. The settlement recommended a customer refund of $42 million in 2018, with the remainder of $59 million be used to accelerate the amortization of an existing prepaid pension asset. With the dismissal of the 2017 rate case, revisions to the TCJA settlement are required to address the impacts of the TCJA for 2019 until new base rates go into effect in connection with a future electric rate case that PSCo anticipates filing later this summer. A CPUC decision is pending.

SPS — In January 2018, the Public Utility Commission of Texas (PUCT) issued an order requiring utilities to apply deferred accounting for the impacts of the TCJA. In February 2018, SPS filed with the PUCT supplemental testimony, which indicated that the TCJA would reduce revenue requirements by approximately $32 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The impact of the TCJA is expected to be addressed as part of SPS’ pending Texas electric rate case, as discussed below.

In February 2018, SPS filed with the New Mexico Public Regulation Commission (NMPRC) a preliminary quantification of the impacts of the TCJA on its ongoing New Mexico 2017 electric rate case, which indicated that the TCJA would reduce revenue requirements by approximately $11 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The impact of the TCJA is expected to be addressed as part of SPS’ pending New Mexico electric rate case, as discussed below.

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Federal Energy Regulatory Commission (FERC) Formula Rates — The FERC has not yet issued guidance on how or when electric utilities should reflect the impacts of the TCJA in FERC jurisdictional wholesale rates. The FERC issued a Notice of Inquiry (NOI) in March 2018 seeking comments on how to reflect the TCJA impacts in wholesale rates, in particular changes to accumulated deferred income taxes and bonus depreciation. Comments for the NOI are due in May 2018. However, FERC-approved formula rates for wholesale customers are generally adjusted on an annual basis for certain changes in rate base and actual operating expenses, including income taxes. As a result, these revenues would be subject to an automatic reduction for the effect of the TCJA corporate tax rate change through the annual true-up process, absent specific FERC action.

NSP-Minnesota and NSP-Wisconsin were parties to a February 2018 FERC filing by certain transmission owner (TO) members of the Midcontinent Independent System Operator, Inc. (MISO) proposing to commence early reductions to transmission formula rates in 2018 for the corporate tax rate impacts of the TCJA. Also in February 2018, PSCo made a filing with FERC similarly requesting early reductions in its transmission and production formula rates in 2018 for corporate tax rate impacts of the TCJA. In March 2018, the FERC issued orders granting MISO TOs and PSCo’s waiver requests so that 2018 rates will reflect the lower federal corporate tax rate. For SPS, as a portion of the TCJA tax rate change largely offsets a depreciation rate change that was effective Jan. 1, 2018 in its wholesale production rates, SPS has notified FERC that it will continue to charge production rates established in 2017, subject to refund. SPS’ wholesale transmission rates continue to be calculated at the pre-TCJA corporate tax rate, subject to true-up in 2019.

NSP-Minnesota

Pending Regulatory Proceedings — MPUC

GUIC Rider — In February 2018, the MPUC approved a 2017 revenue requirement of approximately $20 million for GUIC investments. New rates went into effect in March 2018. In November 2017, NSP-Minnesota filed the 2018 GUIC rider with the MPUC requesting recovery of approximately $28 million from Minnesota gas utility customers. In March 2018, NSP-Minnesota filed a supplement to the 2018 GUIC rider filing to provide an updated capital forecast and address the impact of the TCJA. The net result decreased NSP-Minnesota’s 2018 GUIC revenue requirement to approximately $24 million. The MPUC is currently considering the 2018 petition.

Renewable Energy Standard (RES) Rider — In 2017, NSP-Minnesota filed the 2017 and 2018 RES rider petition with the MPUC, requesting approval of a 2017 over-recovery of approximately $10 million and a 2018 revenue requirement of approximately $11 million. The petition was based on a requested return on equity (ROE) of 10.0 percent and includes costs associated with the Courtenay wind farm and the 1,550 megawatt (MW) wind portfolio, which are offset by production tax credits (PTCs) and proceeds from renewable energy credit (REC) sales. The increase in revenue requirements in 2018 is due to new wind projects entering the construction phase. In February and March 2018, NSP-Minnesota filed supplements to the 2017 and 2018 RES rider petition to provide updated actual results and address TCJA impacts. NSP-Minnesota’s revised 2017 refund is approximately $13 million, and the revised 2018 revenue requirement is approximately $23 million. The increase in 2018 revenue requirements from the original request is primarily driven by the TCJA impact on PTCs earned on existing wind asset-related costs. A decision from the MPUC is expected later in 2018.

PSCo

Pending Regulatory Proceedings — CPUC

Colorado 2017 Multi-Year Electric Rate Case — In October 2017, PSCo filed a multi-year request with the CPUC seeking to increase electric rates approximately $245 million over four years. The request was based on forecast test years (FTY), a 10.0 percent ROE and an equity ratio of 55.25 percent. Interim rates, subject to refund and interest, were to be effective on June 1, 2018.



Revenue Request (Millions of Dollars)	2018		2019		2020		2021		Total
Revenue request	$	74	$	75	$	60	$	36	$	245
Clean Air Clean Jobs Act (CACJA) rider conversion to base rates	90		—		—		—		90
Transmission Cost Adjustment (TCA) rider conversion to base rates	43		—		—		—		43
Total	$	207	$	75	$	60	$	36	$	378

Expected year-end rate base (billions of dollars)	$	6.8	$	7.1	$	7.3	$	7.4

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In March 2018, PSCo, CPUC Staff and OCC reached a settlement and filed a motion with the CPUC requesting changes to the procedural schedule and scope of the electric case, which included delaying the implementation of provisional rates from June 2018 to January 2019 and requiring PSCo to file updated test year information for 2019-2021 which included the impacts of TCJA. In April 2018, the CPUC denied the motion on procedural grounds and dismissed the electric rate case. PSCo anticipates filing a new electric rate case in the summer of 2018 with new rates expected to be effective in the first quarter of 2019.

Colorado 2017 Multi-Year Natural Gas Rate Case — In June 2017, PSCo filed a multi-year request with the CPUC seeking to increase retail natural gas rates approximately $139 million over three years. The request, detailed below, is based on FTYs, a 10.0 percent ROE and an equity ratio of 55.25 percent.



Revenue Request (Millions of Dollars)	2018		2019		2020		Total
Revenue request	$	63	$	33	$	43	$	139
Pipeline System Integrity Adjustment (PSIA) rider conversion to base rates ^(a)	—		94		—		94
Total	$	63	$	127	$	43	$	233

Expected year-end rate base (billions of dollars) ^(b)	$	1.5	$	2.3	$	2.4


^(a)	The roll-in of PSIA rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. The recovery of incremental PSIA related investments in 2019 and 2020 are included in the base rate request.


^(b)	The additional rate base in 2019 predominantly reflects the roll-in of capital associated with the PSIA rider.

In October 2017, the CPUC Staff and the OCC recommended a single 2016 historic test year (HTY) based on an average 13-month rate base, and opposed a multi-year request. In addition, they recommended an equity ratio of 48.73 percent and 51.2 percent, respectively, and the existing PSIA rider expire with the 2018 rates rolled into base rates beginning Jan. 1, 2019. Planned investments in 2019 and 2020 would be recoverable through a future rate case. The Staff and OCC provide for a recommended 2018 rate increase of approximately $30 million and $39 million, respectively.

Provisional rates, subject to refund, of $63 million were implemented on Jan. 1, 2018.

On Jan. 31, 2018, the CPUC ordered deferred accounting for the impacts of TCJA and opened a statewide TCJA proceeding, as discussed below. In February 2018, the ALJ approved a settlement agreement between PSCo and the CPUC, which reduced provisional rates by $20 million to address the impacts of the TCJA. The CPUC is expected to rule on the regulatory treatment of the TCJA and the natural gas rate case later in 2018.

On April 20, 2018, PSCo filed for a PSIA extension through 2020 in the event that the CPUC does not adopt its multi-year plan proposal.

SPS

Pending Regulatory Proceedings — PUCT

Texas 2017 Electric Rate Case — In 2017, SPS filed a $55 million, or 5.8 percent, retail electric, non-fuel base rate increase case in Texas with each of its Texas municipalities and the PUCT. The request was based on a HTY ended June 30, 2017, a requested ROE of 10.25 percent, an electric rate base of approximately $1.9 billion and an equity ratio of 53.97 percent.

The following table summarizes SPS’ rate increase request:



Revenue Request (Millions of Dollars)
Incremental revenue request	$	69
Transmission Cost Recovery Factor (TCRF) rider conversion to base rates ^(a)	(14		)
Net revenue increase request	$	55


^(a)	The roll-in of the TCRF rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. SPS can request another TCRF rider after the conclusion of this rate case to recover transmission investments subsequent to June 30, 2017.

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Key dates in the revised procedural schedule are as follows:


•	PUCT Staff direct testimony — May 2, 2018;


•	PUCT Staff and intervenors’ cross-rebuttal testimony — May 14, 2018;


•	SPS’ rebuttal testimony — May 23, 2018; and


•	Hearings — June 4 - 14, 2018.

As discussed above, the PUCT has opened a docket on the impact of the TCJA, which may have an impact on this rate case. In February 2018, SPS filed supplemental testimony with the PUCT, which indicated that TCJA would reduce revenue requirements by approximately $32 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The final rates are expected to be effective retroactive to Jan. 23, 2018 through a customer surcharge. A PUCT decision is expected in the fourth quarter of 2018.

Appeal of the Texas 2015 Electric Rate Case Decision — In 2014, SPS had requested an overall retail electric revenue rate increase of $42 million. In 2015, the PUCT approved an overall rate decrease of approximately $4 million, net of rate case expenses. In April 2016, SPS filed an appeal with the Texas State District Court (District Court) challenging the PUCT’s order that had denied SPS’ request for rehearing on certain items in SPS’ Texas 2015 electric rate case related to capital structure, incentive compensation and wholesale load reductions. In 2017, the District Court denied SPS’ appeal, and SPS appealed the District Court’s decision to the Court of Appeals. A decision is pending.

Pending Regulatory Proceeding — NMPRC

New Mexico 2017 Electric Rate Case — In October 2017, SPS filed an electric rate case with the NMPRC seeking an increase in retail electric base rates of approximately $43 million. The request is based on a HTY ended June 30, 2017, a ROE of 10.25 percent, an equity ratio of 53.97 percent and a rate base of approximately $885 million, including rate base additions through Nov. 30, 2017. This rate case also takes into account the decline in sales of 380 MW in 2017 from certain wholesale customers and seeks to adjust the life of SPS’ Tolk power plant (Unit 1 from 2042 to 2032 and Unit 2 from 2045 to 2032).

In February 2018, SPS filed supplemental information, which indicated that the TCJA would reduce revenue requirements by approximately $11 million. In addition, SPS requested an increase in the equity ratio of 58 percent and an adjustment to regional transmission revenue for the impacts of TCJA.

On April 13, 2018, the NMPRC Staff, the New Mexico Attorney General (NMAG), and several other parties filed testimony. The recommended ROE’s ranged from 9.0 percent to of 9.21 percent, and the recommended equity ratios were 51.0 percent to 53.97 percent.

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The following table summarizes certain parties’ recommendations from SPS’ request:



Millions of Dollars	NMPRC Staff Testimony				NMAG Testimony
SPS request	$	43			$	43
Reduction to request for the impact of the TCJA	(11		)		(11		)
SPS request, including the impact of the TCJA	32				32

ROE (9.0 percent and 9.21 percent, respectively)	(4		)		(6		)
Capital structure (52.0 percent and 53.97 percent, respectively)	(7		)		(3		)
Accelerated depreciation (Tolk plant)	(3		)		(3		)
Disallow rate case expenses	(2		)		(3		)
Regional transmission revenue (adjustment for the impact of the TCJA)	—			—	(3		)
Post test year plant (estimated numbers were updated to actual)	(1		)		(2		)
Other, net	(4		)		(5		)
Recommended rate increase	$	11			$	7

Key dates in the procedural schedule are as follows:


•	SPS’ rebuttal testimony — May 2, 2018; and


•	Hearings — May 15 - 25, 2018.

SPS anticipates a decision and implementation of final rates in the second half of 2018.

Appeal of the New Mexico 2016 Electric Rate Case Dismissal — In November 2016, SPS filed an electric rate case with the NMPRC seeking an increase in base rates of approximately $41 million, representing a total revenue increase of approximately 10.9 percent. The rate filing was based on a requested ROE of 10.1 percent, an equity ratio of 53.97 percent, an electric rate base of approximately $832 million and a future test year ending June 30, 2018. In 2017, the NMPRC dismissed SPS’ rate case. SPS filed a notice of appeal in the New Mexico Supreme Court. A decision is not expected until the second half of 2019.

Pending Regulatory Proceeding — FERC

MISO ROE Complaints — In November 2013, a group of customers filed a complaint at the FERC against MISO TOs, including NSP-Minnesota and NSP-Wisconsin. The complaint argued for a reduction in the ROE in transmission formula rates in the MISO region from 12.38 percent to 9.15 percent, and the removal of ROE adders (including those for Regional Transmission Organization (RTO) membership), effective Nov. 12, 2013.

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In September 2016, the FERC approved an ALJ recommendation that MISO TOs be granted a 10.32 percent base ROE using the methodology adopted by FERC in June 2014 (Opinion 531). This ROE would be applicable for the 15-month refund period from Nov. 12, 2013 to Feb. 11, 2015, and prospectively from the date of the FERC order. The total prospective ROE would be 10.82 percent, including a 50 basis point adder for RTO membership. Various parties requested rehearing of the September 2016 order. The requests are pending FERC action.

In February 2015, a second complaint seeking to reduce the MISO ROE from 12.38 percent to 8.67 percent prior to any RTO adder was filed, resulting in a second period of potential refunds from Feb. 12, 2015 to May 11, 2016. In June 2016, an ALJ recommended a base ROE of 9.7 percent, applying the FERC Opinion 531 methodology. Various parties filed exceptions to the ALJ recommendation, and FERC action is pending. In April 2017, the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit) vacated and remanded Opinion 531. It is unclear how the D.C. Circuit’s opinion to vacate and remand Opinion 531 will affect the September 2016 FERC order or the timing and outcome of the second ROE complaint.

NSP-Minnesota has recognized a current refund liability consistent with the best estimate of the final ROE for the Feb. 12, 2015 to May 11, 2016 complaint period.

Southwest Power Pool, Inc. (SPP) Open Access Transmission Tariff (OATT) Upgrade Costs — Under the SPP OATT, costs of participant-funded, or “sponsored,” transmission upgrades may be recovered from other SPP customers whose transmission service depends on capacity enabled by the upgrade. The SPP OATT has allowed SPP to charge for these upgrades since 2008, but SPP had not been charging its customers for these upgrades. In 2016, the FERC granted SPP’s request to recover the charges not billed since 2008. SPP subsequently billed SPS approximately $13 million for these charges. SPP is also billing SPS ongoing charges of approximately $0.5 million per month. SPS is currently seeking recovery of these SPP charges in its pending Texas and New Mexico base rate cases.

In October 2017, SPS filed a complaint against SPP regarding the amounts billed asserting that SPP has assessed upgrade charges to SPS in violation of the SPP OATT. In March 2018, the FERC denied SPS’ complaint. SPS sought rehearing in April 2018, which is pending FERC action. If SPS’ complaint results in additional charges or refunds, SPS will seek to recover or refund the differential in future rate proceedings.


6.	Commitments and Contingencies

Except to the extent noted below and in Note 5 above, the circumstances set forth in Notes 12, 13 and 14 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of commitments and contingent liabilities and are incorporated herein by reference. The following include commitments, contingencies and unresolved contingencies that are material to Xcel Energy’s financial position.

PPAs

Under certain PPAs, NSP-Minnesota, PSCo and SPS purchase power from independent power producing entities for which the utility subsidiaries are required to reimburse natural gas or biomass fuel costs, or to participate in tolling arrangements under which the utility subsidiaries procure the natural gas required to produce the energy that they purchase. These specific PPAs create a variable interest in the associated independent power producing entity.

The Xcel Energy utility subsidiaries had approximately 3,537 MW of capacity under long-term PPAs as of March 31, 2018 and Dec. 31, 2017, with entities that have been determined to be variable interest entities. Xcel Energy has concluded that these entities are not required to be consolidated in its consolidated financial statements because it does not have the power to direct the activities that most significantly impact the entities’ economic performance. These agreements have expiration dates through 2041.

Guarantees and Bond Indemnifications

Xcel Energy Inc. and its subsidiaries provide guarantees and bond indemnities under specified agreements or transactions. The guarantees and bond indemnities issued by Xcel Energy Inc. guarantee payment or performance by its subsidiaries. As a result, Xcel Energy Inc.’s exposure under the guarantees and bond indemnities is based upon the net liability of the relevant subsidiary under the specified agreements or transactions. Most of the guarantees and bond indemnities issued by Xcel Energy Inc. and its subsidiaries have a stated maximum guarantee or indemnity amount. As of March 31, 2018 and Dec. 31, 2017, Xcel Energy Inc. and its subsidiaries had no assets held as collateral related to their guarantees, bond indemnities and indemnification agreements.

The following table presents guarantees and bond indemnities issued and outstanding for Xcel Energy:



(Millions of Dollars)	March 31, 2018		Dec. 31, 2017
Guarantees issued and outstanding	$	18.6	$	18.8
Current exposure under these guarantees	—		—
Bonds with indemnity protection	51.7		53.1

Other Indemnification Agreements

Xcel Energy Inc. and its subsidiaries provide indemnifications through contracts entered into in the normal course of business. These are primarily indemnifications against adverse litigation outcomes in connection with underwriting agreements, as well as breaches of representations and warranties, including corporate existence, transaction authorization and income tax matters with respect to assets sold. Xcel Energy Inc.’s and its subsidiaries’ obligations under these agreements may be limited in terms of duration and amount. The maximum future payments under these indemnifications cannot be reasonably estimated as the dollar amounts are often not explicitly stated.

Environmental Contingencies

Ashland Manufactured Gas Plant (MGP) Site — NSP-Wisconsin was named a potentially responsible party (PRP) for contamination at a site in Ashland, Wis. The Site includes NSP-Wisconsin property, previously operated as a MGP facility (the Upper Bluff), and two other properties: an adjacent city lakeshore park area (Kreher Park); and an area of Lake Superior’s Chequamegon Bay adjoining the park.

In January 2017, NSP-Wisconsin agreed to remediate the Phase II Project Area (the Sediments), under a settlement agreement with the Environmental Protection Agency. The settlement agreements were approved by the U.S. District Court for the Western District of Wisconsin. NSP-Wisconsin initiated a full scale wet dredge remedy of the Sediments in 2017. Under the current plan, NSP-Wisconsin anticipates completion of restoration activities of the Sediments in 2018 with finalization of Phase I Project Area (which includes the Upper Bluff and Kreher Park areas of the Site) construction and restoration activities in early 2019 although April weather may challenge that schedule. Groundwater treatment activities at the Site will continue.

The current cost estimate for the remediation of the entire site (both Phase I Project Area and the Sediments) is approximately $172 million, of which approximately $139 million has been spent. As of March 31, 2018 and Dec. 31, 2017, NSP-Wisconsin had recorded a total liability of $33 million and $30 million, respectively, for the entire site.

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NSP-Wisconsin has deferred the unrecovered portion of the estimated Site remediation costs as a regulatory asset. The PSCW has authorized NSP-Wisconsin rate recovery for all remediation costs incurred at the Site. In 2012, the PSCW agreed to allow NSP-Wisconsin to pre-collect certain costs, to amortize costs over a ten-year period and to apply a three percent carrying cost to the unamortized regulatory asset. In December 2017, the PSCW approved an NSP-Wisconsin natural gas rate case, which included recovery of additional expenses associated with remediating the Site. The annual recovery of MGP clean-up costs increased from $12 million in 2017 to $18 million in 2018.

Fargo, N.D. MGP Site — In May 2015, underground pipes, tars and impacted soils were discovered in a right-of-way in Fargo, N.D. that appeared to be associated with a former MGP operated by NSP-Minnesota or prior companies. NSP-Minnesota removed impacted soils and other materials and commenced an investigation of the historic MGP and adjacent properties (the Fargo MGP Site). The North Dakota Department of Health approved NSP-Minnesota’s proposed cleanup plan in January 2017, which involves targeted source removal of impacted soils and historic MGP infrastructure. It is anticipated that remediation activities will be performed in 2018. NSP-Minnesota has also initiated insurance recovery litigation in North Dakota. The U.S. District Court for the District of North Dakota agreed to the parties’ request for a stay of the litigation until May 31, 2018.

NSP-Minnesota had recorded an estimated liability of $15 million as of March 31, 2018 and $16 million as of Dec. 31, 2017, for the Fargo MGP Site. The current cost estimate for the remediation of the site is approximately $22 million, of which approximately $7 million has been spent. NSP-Minnesota has deferred Fargo MGP Site costs allocable to the North Dakota jurisdiction, or approximately 88 percent of all remediation costs, as approved by the North Dakota Public Service Commission (NDPSC). In December 2017, NSP-Minnesota filed a request with the MPUC to defer post-2017 MGP remediation expenditures allocable to the Minnesota jurisdiction, including the Fargo MGP site. In March 2018, the DOC recommended that the MPUC deny NSP-Minnesota’s deferral request. A MPUC decision is expected mid-2018.

Other MGP, Landfill or Disposal Sites — Xcel Energy is currently involved in investigating and/or remediating several MGP, landfill or other disposal sites. Xcel Energy has identified eleven sites across its service territories in addition to the sites in Ashland and Fargo, where contamination is present and where investigation and/or remediation activities are currently underway. Other parties may have responsibility for some portion of the investigation and/or remediation activities. Xcel Energy anticipates that these investigation or remediation activities will continue through at least 2018. Xcel Energy had accrued $4 million as of March 31, 2018 and Dec. 31, 2017 for all of these sites. There may be insurance recovery and/or recovery from other PRPs that will offset any costs incurred. Xcel Energy anticipates that any amounts spent will be fully recovered from customers.

Legal Contingencies

Xcel Energy is involved in various litigation matters that are being defended and handled in the ordinary course of business. The assessment of whether a loss is probable or is a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series of complex judgments about future events. Management maintains accruals for such losses that are probable of being incurred and subject to reasonable estimation. Management is sometimes unable to estimate an amount or range of a reasonably possible loss in certain situations, including but not limited to when (1) the damages sought are indeterminate, (2) the proceedings are in the early stages, or (3) the matters involve novel or unsettled legal theories. In such cases, there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss. For current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Xcel Energy’s financial statements. Unless otherwise required by GAAP, legal fees are expensed as incurred.

Employment, Tort and Commercial Litigation

Gas Trading Litigation — e prime, inc. (e prime) is a wholly owned subsidiary of Xcel Energy. e prime was in the business of natural gas trading and marketing but has not engaged in natural gas trading or marketing activities since 2003. Thirteen lawsuits were commenced against e prime and Xcel Energy (and NSP-Wisconsin, in two instances) between 2003 and 2009 alleging fraud and anticompetitive activities in conspiring to restrain the trade of natural gas and manipulate natural gas prices.

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e prime, Xcel Energy Inc. and its other affiliates were sued along with several other gas marketing companies. These cases were all consolidated in the U.S. District Court in Nevada. Six of the cases remain active, which includes a multi-district litigation (MDL) matter consisting of a Colorado class (Breckenridge), a Wisconsin class (Arandell Corp.), a Missouri class, a Kansas class, and two other cases identified as “Sinclair Oil” and “Farmland.” In March 2017, summary judgment was granted by the MDL judge in favor of Xcel Energy and e prime in the Sinclair Oil and Farmland cases. In November 2017, the U.S District Court in Nevada granted summary judgment against two plaintiffs in the Arandell Corp. case in favor of Xcel Energy and NSP-Wisconsin, leaving only three individual plaintiffs remaining in the litigation. In addition, the plaintiffs’ motions for class certification and remand back to originating courts in these cases were denied in March 2017. Plaintiffs have appealed the summary judgment motions granted in the Farmland and Sinclair Oil cases and the denial of class certification and remand to the U.S. Court of Appeals for the Ninth Circuit (Ninth Circuit). Oral arguments were heard before the Ninth Circuit in February 2018. In March 2018, the Ninth Circuit reversed and remanded the summary judgment in the Farmland case. The Farmland defendants subsequently filed a request for further review by the Ninth Circuit. In light of the decision in the Farmland case, the Sinclair plaintiffs have requested the Ninth Circuit to reverse the grant of summary judgment without hearing. Final rulings on all pending motions and appeals are expected by the end of 2018. Xcel Energy, NSP-Wisconsin and e prime have concluded that a loss is remote.

Line Extension Disputes — In December 2015, Development Recovery Company (DRC) filed a lawsuit in the Denver District Court, stating PSCo failed to award proper allowances and refunds for line extensions to new developments pursuant to the terms of electric and gas service agreements entered into by PSCo and various developers. The dispute involved claims by over fifty developers. In February 2018, the Colorado Supreme Court denied DRC’s petition to appeal the Denver District Court’s dismissal of the lawsuit, effectively terminating this litigation. However, in January 2018, DRC filed a new lawsuit in Boulder County District Court, asserting a single claim that PSCo was required to file its line extension agreements with the CPUC but failed to do so. This claim is substantially similar to the arguments previously raised by DRC. In February 2018, PSCo filed a motion to dismiss. Dates for this proceeding have not been scheduled.

PSCo has concluded that a loss is remote with respect to this matter as the service agreements were developed to implement CPUC approved tariffs and PSCo has complied with the tariff provisions. Also, if a loss were sustained, PSCo believes it would be allowed to recover these costs through traditional regulatory mechanisms. The amount or range in dispute is presently unknown and no accrual has been recorded for this matter.


7.	Borrowings and Other Financing Instruments

Short-Term Borrowings

Money Pool — Xcel Energy Inc. and its utility subsidiaries have established a money pool arrangement that allows for short-term investments in and borrowings between the utility subsidiaries. NSP-Wisconsin does not participate in the money pool. Xcel Energy Inc. may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy Inc. The money pool balances are eliminated in consolidation.

Short-Term Debt — Xcel Energy Inc. and its utility subsidiaries meet their short-term liquidity requirements primarily through the issuance of commercial paper and borrowings under their credit facilities and term loan agreements. Commercial paper and term loan borrowings outstanding for Xcel Energy were as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended March 31, 2018			Year Ended Dec. 31, 2017
Borrowing limit	$	3,250		$	3,250
Amount outstanding at period end	1,025			814
Average amount outstanding	1,000			644
Maximum amount outstanding	1,197			1,247
Weighted average interest rate, computed on a daily basis	1.93		%	1.35		%
Weighted average interest rate at period end	2.34			1.90

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Letters of Credit — Xcel Energy Inc. and its subsidiaries use letters of credit, generally with terms of one year, to provide financial guarantees for certain operating obligations. At March 31, 2018 and Dec. 31, 2017, there were $31 million and $30 million, respectively, of letters of credit outstanding under the credit facilities. The contract amounts of these letters of credit approximate their fair value and are subject to fees.

Credit Facilities — In order to use their commercial paper programs to fulfill short-term funding needs, Xcel Energy Inc. and its utility subsidiaries must have revolving credit facilities in place at least equal to the amount of their respective commercial paper borrowing limits and cannot issue commercial paper in an aggregate amount exceeding available capacity under these credit facilities. The lines of credit provide short-term financing in the form of notes payable to banks, letters of credit and back-up support for commercial paper borrowings.

As of March 31, 2018, Xcel Energy Inc. and its utility subsidiaries had the following committed credit facilities available:



(Millions of Dollars)	Credit Facility ^(a)		Drawn ^(b)		Available
Xcel Energy Inc.	$	1,500	$	898	$	602
PSCo	700		99		601
NSP-Minnesota	500		25		475
SPS	400		12		388
NSP-Wisconsin	150		22		128
Total	$	3,250	$	1,056	$	2,194


^(a)	These credit facilities expire in June 2021, with the exception of Xcel Energy Inc.’s $500 million 364-day term loan agreement entered into in December 2017.


^(b)	Includes outstanding commercial paper, term loan borrowings and letters of credit.

All credit facility bank borrowings, outstanding letters of credit, term loan borrowings and outstanding commercial paper reduce the available capacity under the respective credit facilities. Xcel Energy Inc. and its subsidiaries had no direct advances on the credit facilities outstanding as of March 31, 2018 and Dec. 31, 2017.


8.	Fair Value of Financial Assets and Liabilities

Fair Value Measurements

The accounting guidance for fair value measurements and disclosures provides a single definition of fair value and requires certain disclosures about assets and liabilities measured at fair value. A hierarchical framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value is established by this guidance. The three levels in the hierarchy are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. The types of assets and liabilities included in Level 1 are highly liquid and actively traded instruments with quoted prices.

Level 2 — Pricing inputs are other than quoted prices in active markets, but are either directly or indirectly observable as of the reporting date. The types of assets and liabilities included in Level 2 are typically either comparable to actively traded securities or contracts, or priced with models using highly observable inputs.

Level 3 — Significant inputs to pricing have little or no observability as of the reporting date. The types of assets and liabilities included in Level 3 are those valued with models requiring significant management judgment or estimation.

Specific valuation methods include the following:

Cash equivalents — The fair values of cash equivalents are generally based on cost plus accrued interest; money market funds are measured using quoted net asset value (NAV).

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Investments in equity securities and other funds — Equity securities are valued using quoted prices in active markets. The fair values for commingled funds are measured using NAVs, which take into consideration the value of underlying fund investments, as well as the other accrued assets and liabilities of a fund, in order to determine a per-share market value. The investments in commingled funds may be redeemed for NAV with proper notice. Proper notice varies by fund and can range from daily with one or two days notice to annually with 90 days notice. Private equity investments require approval of the fund for any unscheduled redemption, and such redemptions may be approved or denied by the fund at its sole discretion. Unscheduled distributions from real estate investments may be redeemed with proper notice, which is typically quarterly with 45-90 days notice; however, withdrawals from real estate investments may be delayed or discounted as a result of fund illiquidity.

Investments in debt securities — Fair values for debt securities are determined by a third party pricing service using recent trades and observable spreads from benchmark interest rates for similar securities.

Interest rate derivatives — The fair values of interest rate derivatives are based on broker quotes that utilize current market interest rate forecasts.

Commodity derivatives — The methods used to measure the fair value of commodity derivative forwards and options utilize forward prices and volatilities, as well as pricing adjustments for specific delivery locations, and are generally assigned a Level 2 classification. When contractual settlements extend to periods beyond those readily observable on active exchanges or quoted by brokers, the significance of the use of less observable forecasts of long-term forward prices and volatilities on a valuation is evaluated, and may result in Level 3 classification.

Electric commodity derivatives held by NSP-Minnesota and SPS include transmission congestion instruments, generally referred to as financial transmission rights (FTRs). FTRs purchased from a RTO are financial instruments that entitle or obligate the holder to monthly revenues or charges based on transmission congestion across a given transmission path. The value of an FTR is derived from, and designed to offset, the cost of transmission congestion. In addition to overall transmission load, congestion is also influenced by the operating schedules of power plants and the consumption of electricity pertinent to a given transmission path. Unplanned plant outages, scheduled plant maintenance, changes in the relative costs of fuels used in generation, weather and overall changes in demand for electricity can each impact the operating schedules of the power plants on the transmission grid and the value of an FTR. The valuation process for FTRs utilizes the cleared prices for each FTR for the most recent auction.

If forecasted costs of electric transmission congestion increase or decrease for a given FTR path, the value of that particular FTR instrument will likewise increase or decrease. Given the limited transparency in the auction process, fair value measurements for FTRs have been assigned a Level 3. Non-trading monthly FTR settlements are included in fuel and purchased energy cost recovery mechanisms as applicable in each jurisdiction, and therefore changes in the fair value of the yet to be settled portions of most FTRs are deferred as a regulatory asset or liability. Given this regulatory treatment and the limited magnitude of FTRs, the limited transparency associated with the valuation of FTRs are insignificant to the consolidated financial statements of Xcel Energy.

Non-Derivative Instruments Fair Value Measurements

Nuclear Decommissioning Fund

The Nuclear Regulatory Commission (NRC) requires NSP-Minnesota to maintain a portfolio of investments to fund the costs of decommissioning its nuclear generating plants. Together with all accumulated earnings or losses, the assets of the nuclear decommissioning fund are legally restricted for the decommissioning the Monticello and Prairie Island (PI) nuclear generating plants. The fund contains cash equivalents, debt securities, equity securities and other investments. NSP-Minnesota plans to reinvest matured securities until decommissioning begins. NSP-Minnesota uses the MPUC approved asset allocation for the escrow and investment targets by asset class for both the escrow and qualified trust.

NSP-Minnesota recognizes the costs of funding the decommissioning of its nuclear generating plants over the lives of the plants, assuming rate recovery of all costs. Given the purpose and legal restrictions on the use of nuclear decommissioning fund assets, realized and unrealized gains on fund investments over the life of the fund are deferred as an offset of NSP-Minnesota’s regulatory asset for nuclear decommissioning costs. Consequently, any realized and unrealized gains and losses on securities in the nuclear decommissioning fund, including any impairments, are deferred as a component of the regulatory asset for nuclear decommissioning.

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Unrealized gains for the nuclear decommissioning fund were $543 million and $560 million as of March 31, 2018 and Dec. 31, 2017, respectively, and unrealized losses and amounts recorded as other-than-temporary impairments were $18 million and $7 million as of March 31, 2018 and Dec. 31, 2017, respectively.

The following tables present the cost and fair value of Xcel Energy’s non-derivative instruments with recurring fair value measurements in the nuclear decommissioning fund as of March 31, 2018 and Dec. 31, 2017:



	March 31, 2018
			Fair Value
(Millions of Dollars)	Cost		Level 1		Level 2		Level 3		Investments Measured at NAV ^(b)		Total
Nuclear decommissioning fund ^(a)
Cash equivalents	$	41	$	41	$	—	$	—	$	—	$	41
Commingled funds:
Non U.S. equities	270		226		—		—		90		316
Emerging market debt funds	157		—		—		—		164		164
Private equity investments	142		—		—		—		198		198
Real estate	118		—		—		—		186		186
Other commingled funds	4		1		—		—		3		4
Debt securities:
Government securities	78		—		77		—		—		77
U.S. corporate bonds	325		—		321		—		—		321
Non U.S. corporate bonds	55		—		53		—		—		53
Equity securities:
U.S. equities	278		557		—		—		—		557
Non U.S. equities	153		229		—		—		—		229
Total	$	1,621	$	1,054	$	451	$	—	$	641	$	2,146


^(a)	Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $141 million of equity investments in unconsolidated subsidiaries and $117 million of rabbi trust assets and miscellaneous investments.


^(b)	Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.



	Dec. 31, 2017
			Fair Value
(Millions of Dollars)	Cost		Level 1		Level 2		Level 3		Investments Measured at NAV ^(b)		Total
Nuclear decommissioning fund ^(a)
Cash equivalents	$	29	$	29	$	—	$	—	$	—	$	29
Commingled funds:
Non U.S. equities	264		217		—		—		90		307
Emerging market debt funds	156		—		—		—		166		166
Private equity investments	141		—		—		—		198		198
Real estate	131		—		—		—		202		202
Other commingled funds	9		6		—		—		3		9
Debt securities:
Government securities	68		—		69		—		—		69
U.S. corporate bonds	320		—		322		—		—		322
Non U.S. corporate bonds	50		—		50		—		—		50
Equity securities:
U.S. equities	271		557		—		—		—		557
Non U.S. equities	152		234		—		—		—		234
Total	$	1,591	$	1,043	$	441	$	—	$	659	$	2,143


^(a)	Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $140 million of equity investments in unconsolidated subsidiaries and $114 million of rabbi trust assets and miscellaneous investments.


^(b)	Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.

For the three months ended March 31, 2018 and 2017 there were no Level 3 nuclear decommissioning fund investments and no transfers of amounts between levels.

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The following table summarizes the final contractual maturity dates of the debt securities in the nuclear decommissioning fund, by asset class, as of March 31, 2018:



	Final Contractual Maturity
(Millions of Dollars)	Due in 1 Year or Less		Due in 1 to 5 Years		Due in 5 to 10 Years		Due after 10 Years		Total
Government securities	$	—	$	9	$	2	$	66	$	77
U.S. corporate bonds	3		87		174		57		321
Non U.S. corporate bonds	—		16		33		4		53
Debt securities	$	3	$	112	$	209	$	127	$	451

Rabbi Trusts

In 2016, Xcel Energy established rabbi trusts to provide partial funding for future distributions of its supplemental executive retirement plan and deferred compensation plan. The following tables present the cost and fair value of the assets held in rabbi trusts as of March 31, 2018 and Dec. 31, 2017:



	March 31, 2018
			Fair Value
(Millions of Dollars)	Cost		Level 1		Level 2		Level 3		Total
Rabbi Trusts ^(a)
Cash equivalents	$	11	$	11	$	—	$	—	$	11
Mutual funds	48		50		—		—		50
Total	$	59	$	61	$	—	$	—	$	61



	Dec. 31, 2017
			Fair Value
(Millions of Dollars)	Cost		Level 1		Level 2		Level 3		Total
Rabbi Trusts ^(a)
Cash equivalents	$	12	$	12	$	—	$	—	$	12
Mutual funds	47		50		—		—		50
Total	$	59	$	62	$	—	$	—	$	62


^(a)	Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet.

Derivative Instruments Fair Value Measurements

Xcel Energy enters into derivative instruments, including forward contracts, futures, swaps and options, for trading purposes and to manage risk in connection with changes in interest rates, utility commodity prices and vehicle fuel prices.

Interest Rate Derivatives — Xcel Energy enters into various instruments that effectively fix the interest payments on certain floating rate debt obligations or effectively fix the yield or price on a specified benchmark interest rate for an anticipated debt issuance for a specific period. These derivative instruments are generally designated as cash flow hedges for accounting purposes.

As of March 31, 2018, accumulated other comprehensive losses related to interest rate derivatives included $3 million of net losses expected to be reclassified into earnings during the next 12 months as the related hedged interest rate transactions impact earnings, including forecasted amounts for unsettled hedges, as applicable.

Wholesale and Commodity Trading Risk — Xcel Energy Inc.’s utility subsidiaries conduct various wholesale and commodity trading activities, including the purchase and sale of electric capacity, energy, energy-related instruments and natural gas-related instruments, including derivatives. Xcel Energy’s risk management policy allows management to conduct these activities within guidelines and limitations as approved by its risk management committee, which is made up of management personnel not directly involved in the activities governed by this policy.

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Commodity Derivatives — Xcel Energy enters into derivative instruments to manage variability of future cash flows from changes in commodity prices in its electric and natural gas operations, as well as for trading purposes. This could include the purchase or sale of energy or energy-related products, natural gas to generate electric energy, natural gas for resale, FTRs, vehicle fuel and weather derivatives.

As of March 31, 2018, Xcel Energy had various vehicle fuel contracts designated as cash flow hedges extending through December 2018. Xcel Energy enters into derivative instruments that mitigate commodity price risk on behalf of electric and natural gas customers, but may not be designated as qualifying hedging transactions. Changes in the fair value of non-trading commodity derivative instruments are recorded in other comprehensive income or deferred as a regulatory asset or liability. The classification as a regulatory asset or liability is based on commission approved regulatory recovery mechanisms. Xcel Energy recorded immaterial amounts to income related to the ineffectiveness of cash flow hedges for the three months ended March 31, 2018 and 2017.

As of March 31, 2018, net gains related to commodity derivative cash flow hedges recorded as a component of accumulated other comprehensive losses included immaterial net gains expected to be reclassified into earnings during the next 12 months as the hedged transactions occur.

Additionally, Xcel Energy enters into commodity derivative instruments for trading purposes not directly related to commodity price risks associated with serving its electric and natural gas customers. Changes in the fair value of these commodity derivatives are recorded in electric operating revenues, net of amounts credited to customers under margin-sharing mechanisms.

The following table details the gross notional amounts of commodity forwards, options and FTRs as of March 31, 2018 and Dec. 31, 2017:


^(a)	Amounts are not reflective of net positions in the underlying commodities.


^(b)	Notional amounts for options are included on a gross basis, but are weighted for the probability of exercise.

The following tables detail the impact of derivative activity during the three months ended March 31, 2018 and 2017 on accumulated other comprehensive loss, regulatory assets and liabilities, and income:



	Three Months Ended March 31, 2018
	Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:					Pre-Tax Losses Reclassified into Income During the Period from:					Pre-Tax Gains (Losses) Recognized During the Period in Income
(Millions of Dollars)	Accumulated Other Comprehensive Loss		Regulatory (Assets) and Liabilities			Accumulated Other Comprehensive Loss		Regulatory Assets and (Liabilities)
Other derivative instruments
Commodity trading	$	—	$	—		$	—	$	—		$	3		^(b)
Electric commodity	—		(4		)	—		3		^(c)	—
Natural gas commodity	—		1			—		2		^(d)	(2		)	^(d)
Total	$	—	$	(3	)	$	—	$	5		$	1

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	Three Months Ended March 31, 2017
	Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:					Pre-Tax (Gains) Losses Reclassified into Income During the Period from:							Pre-Tax Gains (Losses) Recognized During the Period in Income
(Millions of Dollars)	Accumulated Other Comprehensive Loss		Regulatory (Assets) and Liabilities			Accumulated Other Comprehensive Loss			Regulatory Assets and (Liabilities)
Derivatives designated as cash flow hedges
Interest rate	$	—	$	—		$	1	^(a)	$	—			$	—
Total	$	—	$	—		$	1		$	—			$	—
Other derivative instruments
Commodity trading	$	—	$	—		$	—		$	—			$	1		^(b)
Electric commodity	—		1			—			(4		)	^(c)	—
Natural gas commodity	—		(6		)	—			1			^(d)	(4		)	^(d)
Total	$	—	$	(5	)	$	—		$	(3	)		$	(3	)


^(a)	Amounts are recorded to interest charges.


^(b)	Amounts are recorded to electric operating revenues. Portions of these gains and losses are subject to sharing with electric customers through margin-sharing mechanisms and deducted from gross revenue, as appropriate.


^(c)	Amounts are recorded to electric fuel and purchased power. These derivative settlement gains and losses are shared with electric customers through fuel and purchased energy cost-recovery mechanisms, and reclassified out of income as regulatory assets or liabilities, as appropriate.

^(d)

Certain derivatives are utilized to mitigate natural gas price risk for electric generation and are recorded to electric fuel and purchased power, subject to cost-recovery mechanisms and reclassified to a regulatory asset, as appropriate. Amounts for the three months ended March 31, 2018 and 2017 included $1 million of settlement losses and $0.9 million of settlement gains, respectively. The remaining derivative settlement gains and losses for the three months ended March 31, 2018 and 2017 relate to natural gas operations and are recorded to cost of natural gas sold and transported. These gains and losses are subject to cost-recovery and reclassified out of income to a regulatory asset or liability, as appropriate.

Xcel Energy had no derivative instruments designated as fair value hedges during the three months ended March 31, 2018 and 2017. Therefore, no gains or losses from fair value hedges or related hedged transactions were recognized for these periods.

Consideration of Credit Risk and Concentrations — Xcel Energy continuously monitors the creditworthiness of the counterparties to its interest rate derivatives and commodity derivative contracts prior to settlement, and assesses each counterparty’s ability to perform on the transactions set forth in the contracts. Given this assessment, as well as an assessment of the impact of Xcel Energy’s own credit risk when determining the fair value of derivative liabilities, the impact of credit risk was immaterial to the fair value of unsettled commodity derivatives presented in the consolidated balance sheets.

Xcel Energy Inc. and its subsidiaries employ additional credit risk control mechanisms when appropriate, such as letters of credit, parental guarantees, standardized master netting agreements and termination provisions that allow for offsetting of positive and negative exposures. Credit exposure is monitored and, when necessary, the activity with a specific counterparty is limited until credit enhancement is provided.

Xcel Energy’s utility subsidiaries’ most significant concentrations of credit risk with particular entities or industries are contracts with counterparties to their wholesale, trading and non-trading commodity activities. As of March 31, 2018, five of Xcel Energy’s 10 most significant counterparties for these activities, comprising $70 million or 35 percent of this credit exposure, had investment grade credit ratings from Standard & Poor’s, Moody’s or Fitch Ratings. Four of the 10 most significant counterparties, comprising $27 million or 14 percent of this credit exposure, were not rated by these external agencies, but based on Xcel Energy’s internal analysis, had credit quality consistent with investment grade. The one remaining significant counterparty, comprising of $7 million or 4 percent of this credit exposure, had credit quality less than investment grade based on ratings from external analysis. Nine of these significant counterparties are municipal or cooperative electric entities or other utilities.

Credit Related Contingent Features — Contract provisions for derivative instruments that the utility subsidiaries enter, including those accounted for as normal purchase-normal sale contracts and therefore not reflected on the balance sheet, may require the posting of collateral or settlement of the contracts for various reasons, including if the applicable utility subsidiary’s credit ratings are downgraded below its investment grade credit rating by any of the major credit rating agencies or for cross-default contractual provisions that could result in the settlement of such contracts if there was a failure under other financing arrangements related to payment terms or other covenants. As of March 31, 2018 and Dec. 31, 2017, there were no derivative instruments in a material liability position with such underlying contract provisions.

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Certain derivative instruments are also subject to contract provisions that contain adequate assurance clauses. These provisions allow counterparties to seek performance assurance, including cash collateral, in the event that a given utility subsidiary’s ability to fulfill its contractual obligations is reasonably expected to be impaired. Xcel Energy had no collateral posted related to adequate assurance clauses in derivative contracts as of March 31, 2018 and Dec. 31, 2017.

Recurring Fair Value Measurements — The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of March 31, 2018:



	March 31, 2018
	Fair Value						Fair Value Total		Counterparty Netting ^(b)			Total
(Millions of Dollars)	Level 1		Level 2		Level 3		Fair Value Total		Counterparty Netting ^(b)			Total
Current derivative assets
Other derivative instruments:
Commodity trading	$	1	$	22	$	—	$	23	$	(12	)	$	11
Electric commodity	—		—		13		13		(2		)	11
Total current derivative assets	$	1	$	22	$	13	$	36	$	(14	)	22
PPAs ^(a)												6
Current derivative instruments												$	28
Noncurrent derivative assets
Other derivative instruments:
Commodity trading	$	1	$	37	$	8	$	46	$	(15	)	$	31
Total noncurrent derivative assets	$	1	$	37	$	8	$	46	$	(15	)	31
PPAs ^(a)												18
Noncurrent derivative instruments												$	49



	March 31, 2018
	Fair Value						Fair Value Total		Counterparty Netting ^(b)			Total
(Millions of Dollars)	Level 1		Level 2		Level 3		Fair Value Total		Counterparty Netting ^(b)			Total
Current derivative liabilities
Other derivative instruments:
Commodity trading	$	1	$	19	$	—	$	20	$	(13	)	$	7
Electric commodity	—		—		2		2		(1		)	1
Total current derivative liabilities	$	1	$	19	$	2	$	22	$	(14	)	8
PPAs ^(a)												22
Current derivative instruments												$	30
Noncurrent derivative liabilities
Other derivative instruments:
Commodity trading	$	2	$	30	$	—	$	32	$	(19	)	$	13
Total noncurrent derivative liabilities	$	2	$	30	$	—	$	32	$	(19	)	13
PPAs ^(a)												107
Noncurrent derivative instruments												$	120


^(a)	During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.

^(b)

Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at March 31, 2018. At March 31, 2018, derivative assets and liabilities include no obligations to return cash collateral and the rights to reclaim cash collateral of $4 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

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The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of Dec. 31, 2017:



	Dec. 31, 2017
	Fair Value						Fair Value Total		Counterparty Netting ^(b)			Total
(Millions of Dollars)	Level 1		Level 2		Level 3		Fair Value Total		Counterparty Netting ^(b)			Total
Current derivative assets
Other derivative instruments:
Commodity trading	$	2	$	22	$	—	$	24	$	(15	)	$	9
Electric commodity	—		—		32		32		(2		)	30
Total current derivative assets	$	2	$	22	$	32	$	56	$	(17	)	39
PPAs ^(a)												5
Current derivative instruments												$	44
Noncurrent derivative assets
Other derivative instruments:
Commodity trading	$	—	$	31	$	5	$	36	$	(7	)	$	29
Total noncurrent derivative assets	$	—	$	31	$	5	$	36	$	(7	)	29
PPAs ^(a)												19
Noncurrent derivative instruments												$	48



	Dec. 31, 2017
	Fair Value						Fair Value Total		Counterparty Netting ^(b)			Total
(Millions of Dollars)	Level 1		Level 2		Level 3		Fair Value Total		Counterparty Netting ^(b)			Total
Current derivative liabilities
Other derivative instruments:
Commodity trading	$	2	$	18	$	—	$	20	$	(15	)	$	5
Electric commodity	—		—		2		2		(2		)	—
Natural gas commodity	—		1		—		1		—			1
Total current derivative liabilities	$	2	$	19	$	2	$	23	$	(17	)	6
PPAs ^(a)												23
Current derivative instruments												$	29
Noncurrent derivative liabilities
Other derivative instruments:
Commodity trading	$	—	$	24	$	—	$	24	$	(10	)	$	14
Total noncurrent derivative liabilities	$	—	$	24	$	—	$	24	$	(10	)	14
PPAs ^(a)												112
Noncurrent derivative instruments												$	126


^(a)	During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.

^(b)

Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at Dec. 31, 2017. At Dec. 31, 2017, derivative assets and liabilities include no obligations to return cash collateral and rights to reclaim cash collateral of $3 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

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The following table presents the changes in Level 3 commodity derivatives for the three months ended March 31, 2018 and 2017:




	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Balance at Jan. 1	$	35		$	17
Purchases	1			4
Settlements	(12		)	(20		)
Net transactions recorded during the period:
Gains recognized in earnings ^(a)	2			—
Net (losses) gains recognized as regulatory assets and liabilities	(7		)	5
Balance at March 31	$	19		$	6


^(a)	These amounts relate to commodity derivatives held at the end of the period.

Xcel Energy recognizes transfers between levels as of the beginning of each period. There were no transfers of amounts between levels for derivative instruments for the three months ended March 31, 2018 and 2017.

Fair Value of Long-Term Debt

As of March 31, 2018 and Dec. 31, 2017, other financial instruments for which the carrying amount did not equal fair value were as follows:



	March 31, 2018				Dec. 31, 2017
(Millions of Dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion	$	14,979	$	15,877	$	14,976	$	16,531

The fair value of Xcel Energy’s long-term debt is estimated based on recent trades and observable spreads from benchmark interest rates for similar securities. The fair value estimates are based on information available to management as of March 31, 2018 and Dec. 31, 2017, and given the observability of the inputs to these estimates, the fair values presented for long-term debt have been assigned a Level 2.


9.	Other Income, Net

Other income, net consisted of the following:



	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Interest income	$	5		$	4
Other nonoperating income	1			4
Benefits non-service cost	(5		)	(6		)
Insurance policy expense	—			(1		)
Other income, net	$	1		$	1


10.	Segment Information

The regulated electric utility operating results of NSP-Minnesota, NSP-Wisconsin, PSCo and SPS, as well as the regulated natural gas utility operating results of NSP-Minnesota, NSP-Wisconsin and PSCo are each separately and regularly reviewed by Xcel Energy’s chief operating decision maker. Xcel Energy evaluates performance by each utility subsidiary based on profit or loss generated from the product or service provided. These segments are managed separately because the revenue streams are dependent upon regulated rate recovery, which is separately determined for each segment.

Xcel Energy has the following reportable segments: regulated electric utility, regulated natural gas utility and all other.

•

Xcel Energy’s regulated electric utility segment generates, transmits and distributes electricity primarily in portions of Minnesota, Wisconsin, Michigan, North Dakota, South Dakota, Colorado, Texas and New Mexico. In addition, this segment includes sales for resale and provides wholesale transmission service to various entities in the United States. Regulated electric utility also includes commodity trading operations.


•	Xcel Energy’s regulated natural gas utility segment transports, stores and distributes natural gas primarily in portions of Minnesota, Wisconsin, North Dakota, Michigan and Colorado.

•

Revenues from operating segments not included above are below the necessary quantitative thresholds and are therefore included in the all other category. Those primarily include steam revenue, appliance repair services, nonutility real estate activities, revenues associated with processing solid waste into refuse-derived fuel and investments in rental housing projects that qualify for low-income housing tax credits.

Xcel Energy had equity investments in unconsolidated subsidiaries of $141 million and $140 million as of March 31, 2018 and Dec. 31, 2017, respectively, included in the regulated natural gas utility segment.

Asset and capital expenditure information is not provided for Xcel Energy’s reportable segments because as an integrated electric and natural gas utility, Xcel Energy operates significant assets that are not dedicated to a specific business segment, and reporting assets and capital expenditures by business segment would require arbitrary and potentially misleading allocations which may not necessarily reflect the assets that would be required for the operation of the business segments on a stand-alone basis.

To report income from operations for regulated electric and regulated natural gas utility segments, the majority of costs are directly assigned to each segment. However, some costs, such as common depreciation, common operating and maintenance (O&M) expenses and interest expense are allocated based on cost causation allocators. A general allocator is used for certain general and administrative expenses, including office supplies, rent, property insurance and general advertising.

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(Millions of Dollars)	Regulated Electric		Regulated Natural Gas		All Other			Reconciling Eliminations			Consolidated Total
Three Months Ended March 31, 2018
Operating revenues from external customers	$	2,270	$	662	$	19		$	—		$	2,951
Intersegment revenues	—		—		—			—			—
Total revenues	$	2,270	$	662	$	19		$	—		$	2,951
Net income (loss)	$	219	$	95	$	(22	)	$	(1	)	$	291



(Millions of Dollars)	Regulated Electric		Regulated Natural Gas		All Other			Reconciling Eliminations		Consolidated Total
Three Months Ended March 31, 2017
Operating revenues from external customers	$	2,299	$	626	$	21		$	—	$	2,946
Intersegment revenues	—		—		—			—		—
Total revenues	$	2,299	$	626	$	21		$	—	$	2,946
Net income (loss)	$	194	$	63	$	(18	)	$	—	$	239


11.	Earnings Per Share

Basic earnings per share (EPS) was computed by dividing the earnings available to Xcel Energy Inc.’s common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS was computed by dividing the earnings available to Xcel Energy Inc.’s common shareholders by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock (i.e., common stock equivalents) were settled. The weighted average number of potentially dilutive shares outstanding used to calculate Xcel Energy Inc.’s diluted EPS is calculated using the treasury stock method.

Common Stock Equivalents — Xcel Energy Inc. currently has common stock equivalents related to certain equity awards in share-based compensation arrangements. Common stock equivalents causing a dilutive impact to EPS include commitments to issue common stock related to time based equity compensation awards.

Stock equivalent units granted to Xcel Energy Inc.’s Board of Directors are included in common shares outstanding upon grant date as there is no further service, performance or market condition associated with these awards. Restricted stock, granted to settle amounts due to certain employees under the Xcel Energy Inc. Executive Annual Incentive Award Plan, is included in common shares outstanding when granted.

Share-based compensation arrangements for which there is currently no dilutive impact to EPS include the following:


•	Equity awards subject to a performance condition; included in common shares outstanding when all necessary conditions for settlement have been satisfied by the end of the reporting period.


•	Liability awards subject to a performance condition; any portions settled in shares are included in common shares outstanding upon settlement.

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The dilutive impact of common stock equivalents affecting EPS was as follows:



	Three Months Ended March 31, 2018					Three Months Ended March 31, 2017
(Amounts in millions, except per share data)	Income		Shares	Per Share Amount		Income		Shares	Per Share Amount
Net income	$	291	—	—		$	239	—	—
Basic EPS:
Earnings available to common shareholders	291		509.0	$	0.57	239		508.3	$	0.47
Effect of dilutive securities:
Equity awards	—		0.5	—		—		0.5	—
Diluted EPS:
Earnings available to common shareholders	$	291	509.5	$	0.57	$	239	508.8	$	0.47


12.	Benefit Plans and Other Postretirement Benefits

Components of Net Periodic Benefit Cost (Credit)



	Three Months Ended March 31
	2018			2017			2018			2017
(Millions of Dollars)	Pension Benefits						Postretirement Health Care Benefits
Service cost	$	24		$	24		$	1		$	1
Interest cost ^(a)	33			36			5			6
Expected return on plan assets ^(a)	(52		)	(52		)	(6		)	(6		)
Amortization of prior service credit ^(a)	(1		)	—			(3		)	(3		)
Amortization of net loss ^(a)	27			26			2			1
Net periodic benefit cost (credit)	31			34			(1		)	(1		)
Costs not recognized due to the effects of regulation	—			(4		)	—			—
Net benefit cost (credit) recognized for financial reporting	$	31		$	30		$	(1	)	$	(1	)


^(a)	The components of net periodic cost other than the service cost component are included in the line item “other income, net” in the income statement or capitalized on the balance sheet as a regulatory asset.

In January 2018, contributions of $150 million were made across four of Xcel Energy’s pension plans. Xcel Energy does not expect additional pension contributions during 2018.


13.	Other Comprehensive Loss

Changes in accumulated other comprehensive loss, net of tax, for the three months ended March 31, 2018 and 2017 were as follows:



	Three Months Ended March 31, 2018
(Millions of Dollars)	Gains and Losses on Cash Flow Hedges			Defined Benefit Pension and Postretirement Items			Total
Accumulated other comprehensive loss at Jan. 1	$	(58	)	$	(67	)	$	(125	)
Losses reclassified from net accumulated other comprehensive loss	—			1			1
Net current period other comprehensive income	—			1			1
Accumulated other comprehensive loss at March 31	$	(58	)	$	(66	)	$	(124	)



	Three Months Ended March 31, 2017
(Millions of Dollars)	Gains and Losses on Cash Flow Hedges			Defined Benefit Pension and Postretirement Items			Total
Accumulated other comprehensive loss at Jan. 1	$	(51	)	$	(59	)	$	(110	)
Losses reclassified from net accumulated other comprehensive loss	1			1			2
Net current period other comprehensive income	1			1			2
Accumulated other comprehensive loss at March 31	$	(50	)	$	(58	)	$	(108	)

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Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2018 and 2017 were as follows:



(Millions of Dollars)	Amounts Reclassified from Accumulated Other Comprehensive Loss
	Three Months Ended March 31, 2018			Three Months Ended March 31, 2017
Losses on cash flow hedges:
Interest rate derivatives	$	—	^(a)	$	1		^(a)
Total, net of tax	—			1
Defined benefit pension and postretirement losses:
Amortization of net loss	1		^(b)	2			^(b)
Total, pre-tax	1			2
Tax benefit	—			(1		)
Total, net of tax	1			1
Total amounts reclassified, net of tax	$	1		$	2


^(a)	Included in interest charges


^(b)	Included in the computation of net periodic pension and postretirement benefit costs. See Note 12 for details regarding these benefit plans.

14. Revenues

Xcel Energy principally generates revenue from the transmission, distribution and sale of electricity and the transportation, distribution and sale of natural gas to wholesale and retail customers. Performance obligations related to the sale of energy are satisfied as energy is delivered to customers. Xcel Energy recognizes revenue in an amount that corresponds directly to the price of the energy delivered to the customer. The measurement of energy sales to customers is generally based on the reading of their meters, which occurs on a systematic basis throughout the month. At the end of each month, amounts of energy delivered to customers since the date of the last meter reading are estimated, and the corresponding unbilled revenue is recognized. Contract terms are generally short-term in nature, and as such Xcel Energy does not recognize a separate financing component of its collections from customers. Xcel Energy presents its revenues net of any excise or other fiduciary-type taxes or fees.

NSP-Minnesota participates in MISO, and SPS participates in SPP. Xcel Energy’s utility subsidiaries recognize sales to both native load and other end use customers on a gross basis in electric revenue and cost of sales. Revenues and charges for short term wholesale sales of excess energy transacted through RTOs are also recorded on a gross basis. Other revenues and charges related to participating and transacting in RTOs are recorded on a net basis in cost of sales.

Xcel Energy Inc.’s utility subsidiaries have various rate-adjustment mechanisms in place that provide for the recovery of natural gas, electric fuel and purchased energy costs. These cost-adjustment tariffs may increase or decrease the level of revenue collected from customers and are revised periodically for differences between the total amount collected under the clauses and the costs incurred. When applicable, under governing regulatory commission rate orders, fuel cost over-recoveries (the excess of fuel revenue billed to customers over fuel costs incurred) are deferred as regulatory liabilities and under-recoveries (the excess of fuel costs incurred over fuel revenues billed to customers) are deferred as regulatory assets.

Certain rate rider mechanisms qualify as alternative revenue programs under GAAP. These mechanisms arise from costs imposed upon the utility by action of a regulator or legislative body related to an environmental, public safety or other mandate. When certain criteria are met (including collection within 24 months), revenue is recognized equal to the revenue requirement, which may include return on rate base items and incentives. The mechanisms are revised periodically for differences between the total amount collected and the revenue recognized, which may increase or decrease the level of revenue collected from customers. Alternative revenue is recorded on a gross basis and is disclosed separate from revenue from contracts with customers in the period earned.

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In the following tables, revenue is classified by the type of goods/services rendered and market/customer type. The tables also reconcile revenue to the reportable segments.



	Three Months Ended March 31, 2018
(Millions of Dollars)	Regulated Electric		Regulated Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	687	$	390	$	9	$	1,086
Commercial and industrial (C&I)	1,112		207		7		1,326
Other	33		—		1		34
Total retail	1,832		597		17		2,446
Wholesale	188		—		—		188
Transmission	123		—		—		123
Other	39		28		—		67
Total revenue from contracts with customers	2,182		625		17		2,824
Alternative revenue and other	88		37		2		127
Total revenues	$	2,270	$	662	$	19	$	2,951



	Three Months Ended March 31, 2017
(Millions of Dollars)	Regulated Electric		Regulated Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	685	$	374	$	8	$	1,067
C&I	1,148		195		9		1,352
Other	32		—		1		33
Total retail	1,865		569		18		2,452
Wholesale	181		—		—		181
Transmission	121		—		—		121
Other	25		25		—		50
Total revenue from contracts with customers	2,192		594		18		2,804
Alternative revenue and other	107		32		3		142
Total revenues	$	2,299	$	626	$	21	$	2,946

Item 2 — MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis by management focuses on those factors that had a material effect on Xcel Energy’s financial condition, results of operations and cash flows during the periods presented, or are expected to have a material impact in the future. It should be read in conjunction with the accompanying unaudited consolidated financial statements and the related notes to consolidated financial statements. Due to the seasonality of Xcel Energy’s operating results, quarterly financial results are not an appropriate base from which to project annual results.

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Forward-Looking Statements

Except for the historical statements contained in this report, the matters discussed herein, are forward-looking statements that are subject to certain risks, uncertainties and assumptions. Such forward-looking statements, including our 2018 earnings per share

guidance, the TCJA’s impact to Xcel Energy and its customers, long-term earnings per share and dividend growth rate, as well as assumptions and other statements are intended to be identified in this document by the words “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “objective,” “outlook,” “plan,” “project,” “possible,” “potential,” “should,” “will,” “would” and similar expressions. Actual results may vary materially. Forward-looking statements speak only as of the date they are made, and we expressly disclaim any obligation to update any forward-looking information. The following factors, in addition to those discussed elsewhere in this Quarterly Report on Form 10-Q and in other securities filings (including Xcel Energy’s Annual Report on Form 10-K for the fiscal year ended Dec. 31, 2017, and subsequent securities filings), could cause actual results to differ materially from management expectations as suggested by such forward-looking information: general economic conditions, including inflation rates, monetary fluctuations and their impact on capital expenditures and the ability of Xcel Energy Inc. and its subsidiaries (collectively, Xcel Energy) to obtain financing on favorable terms; business conditions in the energy industry; including the risk of a slow down in the U.S. economy or delay in growth, recovery, trade, fiscal, taxation and environmental policies in areas where Xcel Energy has a financial interest; customer business conditions; actions of credit rating agencies; competitive factors including the extent and timing of the entry of additional competition in the markets served by Xcel Energy; unusual weather; effects of geopolitical events, including war and acts of terrorism; cyber security threats and data security breaches; state, federal and foreign legislative and regulatory initiatives that affect cost and investment recovery, have an impact on rates or have an impact on asset operation or ownership or impose environmental compliance conditions; structures that affect the speed and degree to which competition enters the electric and natural gas markets; costs and other effects of legal and administrative proceedings, settlements, investigations and claims; financial or regulatory accounting policies imposed by regulatory bodies; outcomes of regulatory proceedings; availability or cost of capital; and employee work force factors.

Non-GAAP Financial Measures

The following discussion includes financial information prepared in accordance with GAAP, as well as certain non-GAAP financial measures such as electric margin, natural gas margin, ongoing earnings and ongoing diluted EPS. Generally, a non-GAAP financial measure is a numerical measure of a company’s financial performance, financial position or cash flows that excludes (or includes) amounts that are adjusted from the most directly comparable measure calculated and presented in accordance with GAAP. Xcel Energy’s management uses non-GAAP measures internally for financial planning and analysis, for reporting of results to the Board of Directors, in determining whether performance targets are met for performance-based compensation, and when communicating its earnings outlook to analysts and investors. Non-GAAP financial measures are intended to supplement investors’ understanding of our operating performance and should not be considered alternatives for financial measures presented in accordance with GAAP. These measures are discussed in more detail below and may not be comparable to other companies’ similarly titled non-GAAP financial measures.

Electric and Natural Gas Margins

Electric margin is presented as electric revenues less electric fuel and purchased power expenses and natural gas margin is presented as natural gas revenues less the cost of natural gas sold and transported. Expenses incurred for electric fuel and purchased power and the cost of natural gas sold and transported are generally recovered through various regulatory recovery mechanisms, and as a result, changes in these expenses are generally offset in operating revenues. Management believes electric and natural gas margins provide the most meaningful basis for evaluating our operations because they exclude the revenue impact of fluctuations in these expenses. These margins can be reconciled to operating income, a GAAP measure, by including other operating revenues, cost of sales - other, O&M expenses, conservation and demand side management (DSM) expenses, depreciation and amortization and taxes (other than income taxes).

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Earnings Adjusted for Certain Items (Ongoing Earnings and Diluted EPS)

Ongoing earnings reflect adjustments to GAAP earnings (net income) for certain items. Ongoing diluted EPS is calculated by dividing the net income or loss attributable to the controlling interest of each subsidiary, adjusted for certain items, by the weighted average fully diluted Xcel Energy Inc. common shares outstanding for the period. We use these non-GAAP financial measures to evaluate and provide details of Xcel Energy’s core earnings and underlying performance. We believe these measurements are useful to investors to evaluate the actual and projected financial performance and contribution of our subsidiaries. For the three months ended March 31, 2017 and 2018, there were no such adjustments to GAAP earnings and therefore GAAP earnings equal ongoing earnings for these periods.

Results of Operations

The only common equity securities that are publicly traded are common shares of Xcel Energy Inc. The diluted earnings and EPS of each subsidiary discussed below do not represent a direct legal interest in the assets and liabilities allocated to such subsidiary but rather represent a direct interest in our assets and liabilities as a whole.

The following table summarizes GAAP and ongoing diluted EPS for Xcel Energy:



	Three Months Ended March 31
Diluted Earnings (Loss) Per Share	2018			2017
PSCo	$	0.26		$	0.22
NSP-Minnesota	0.22			0.19
SPS	0.07			0.05
NSP-Wisconsin	0.06			0.04
Equity earnings of unconsolidated subsidiaries	0.01			0.01
Regulated utility	0.62			0.51
Xcel Energy Inc. and other	(0.05		)	(0.04		)
Total	$	0.57		$	0.47

Summary of Earnings

Explanations below exclude the offsetting impacts on sales and income tax expense of the TCJA.

Xcel Energy — Xcel Energy’s earnings increased $0.10 per share for the first quarter of 2018. Increased electric and natural gas margins (excluding the impact of the TCJA), which reflect favorable weather compared to last year, timing of O&M expenses and an increased allowance for funds used during construction (AFUDC) were partially offset by higher depreciation and interest expenses.

PSCo — Earnings increased $0.04 per share for the first quarter of 2018. The increase in earnings was driven by higher natural gas margins (due to the impact of an interim rate increase, subject to refund, and favorable weather) and increased AFUDC primarily related to the Rush Creek wind project. These items were partially offset by higher depreciation expense.

NSP-Minnesota — Earnings increased $0.03 per share for the first quarter of 2018. The increase reflects lower O&M expenses and higher natural gas margins due to favorable weather. These positive factors were partially offset by higher depreciation expense due to increased invested capital.

SPS — Earnings increased by $0.02 per share for the first quarter of 2018, largely due to timing of O&M expenses, the favorable impact of weather and lower interest expense.

NSP-Wisconsin — Earnings increased $0.02 per share for the first quarter of 2018. The increase was driven by higher natural gas and electric rates and the impact of favorable weather, partially offset by additional depreciation and amortization expense related to higher invested capital.

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Changes in GAAP and Ongoing Diluted EPS

The following table summarizes significant components contributing to the changes in 2018 EPS compared with the same period in 2017:



Diluted Earnings (Loss) Per Share	Three Months Ended March 31
GAAP and ongoing diluted EPS — 2017	$	0.47

Components of change — 2018 vs. 2017
Higher electric margins (excluding TCJA impacts)^(a)	0.04
Higher natural gas margins (excluding TCJA impacts)^(a)	0.04
Lower O&M expenses	0.03
Higher AFUDC — equity	0.02
Lower ETR (excluding TCJA impacts)^{(a) (b)}	0.01
Higher depreciation and amortization	(0.02		)
Higher interest charges	(0.01		)
Other, net	(0.01		)
GAAP and ongoing diluted EPS — 2018	$	0.57

^(a)TCJA impact:
Income tax - rate change	$	0.10
Electric revenue reductions	(0.08		)
Gas revenue reductions	(0.01		)
Holding company - interest expense	(0.01		)
Total	$	—

^(b)The ETR includes the impact of an additional $4 million of wind PTCs for the three months ended March 31, 2018, which are largely flowed back to customers through electric margin.

Statement of Income Analysis

The following discussion summarizes the items that affected the individual revenue and expense items reported in the consolidated statements of income.

Estimated Impact of Temperature Changes on Regulated Earnings — Unusually hot summers or cold winters increase electric and natural gas sales, while mild weather reduces electric and natural gas sales. The estimated impact of weather on earnings is based on the number of customers, temperature variances and the amount of natural gas or electricity historically used per degree of temperature. Weather deviations from normal levels can affect Xcel Energy’s financial performance.

Degree-day or Temperature-Humidity Index (THI) data is used to estimate amounts of energy required to maintain comfortable indoor temperature levels based on each day’s average temperature and humidity. Heating degree-days (HDD) is the measure of the variation in the weather based on the extent to which the average daily temperature falls below 65° Fahrenheit. Cooling degree-days (CDD) is the measure of the variation in the weather based on the extent to which the average daily temperature rises above 65° Fahrenheit. Each degree of temperature above 65° Fahrenheit is counted as one CDD, and each degree of temperature below 65° Fahrenheit is counted as one HDD. In Xcel Energy’s more humid service territories, a THI is used in place of CDD, which adds a humidity factor to CDD. HDD, CDD and THI are most likely to impact the usage of Xcel Energy’s residential and commercial customers. Industrial customers are less sensitive to weather.

Normal weather conditions are defined as either the 20-year or 30-year average of actual historical weather conditions. The historical period of time used in the calculation of normal weather differs by jurisdiction, based on regulatory practice. To calculate the impact of weather on demand, a demand factor is applied to the weather impact on sales.

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There was no impact on sales for the first quarter of 2018 due to THI or CDD. The percentage increase (decrease) in normal and actual HDD is provided in the following table:



	Three Months Ended March 31
	2018 vs. Normal		2017 vs. Normal		2018 vs. 2017
HDD	0.3	%	(14.4	)%	16.0	%

Weather — The following table summarizes the estimated impact of temperature variations on EPS compared with normal weather conditions:



	Three Months Ended March 31
	2018 vs. Normal			2017 vs. Normal			2018 vs. 2017
Retail electric	$	0.003		$	(0.025	)	$	0.028
Firm natural gas	0.003			(0.018		)	0.021
Total (before adjustments for decoupling)	$	0.006		$	(0.043	)	$	0.049
Decoupling – Minnesota	(0.002		)	0.008			(0.010		)
Total (adjusted for decoupling)	$	0.004		$	(0.035	)	$	0.039

Sales Growth (Decline) — The following tables summarize Xcel Energy and its subsidiaries’ sales growth (decline) for actual and weather-normalized sales in 2018 compared to the same period in 2017:



	Three Months Ended March 31
	PSCo		NSP-Minnesota		SPS		NSP-Wisconsin		Xcel Energy
Actual
Electric residential ^(a)	1.5	%	3.7	%	7.7	%	5.4	%	3.5	%
Electric commercial and industrial	1.7		0.4		5.2		4.9		2.3
Total retail electric sales	1.6		1.4		5.8		5.0		2.7
Firm natural gas sales	12.8		17.0		N/A		16.7		14.5



	Three Months Ended March 31
	PSCo		NSP-Minnesota		SPS		NSP-Wisconsin		Xcel Energy
Weather-normalized
Electric residential ^(a)	(0.4	)%	(1.3	)%	1.2	%	(1.3	)%	(0.6	)%
Electric commercial and industrial	1.6		(0.6	)	4.9		4.3		1.8
Total retail electric sales	0.9		(0.8	)	4.3		2.5		1.1
Firm natural gas sales	2.0		1.0		N/A		2.1		1.7


^(a)	Extreme weather variations, windchill and cloud cover may not be reflected in weather-normalized and actual growth (decline) estimates.

Weather-normalized Electric Sales Growth (Decline)


•	PSCo’s decline in residential sales reflects lower use per customer, partially offset by customer additions. C&I growth was mainly due to an increase in customers and higher use for large C&I customers that support the metal mining industries, which were partially reduced by lower use for the small C&I class.


•	NSP-Minnesota’s residential sales decrease was a result of lower use per customer, partially offset by customer growth. The decline in C&I sales was largely due to reduced usage, which offset an increase in the number of customers. Declines in service related industries offset increased sales to large customers in the manufacturing and energy industries.


•	SPS’ residential sales grew largely due to higher use per customer and customer additions. The increase in C&I sales was driven by the oil and natural gas industry in the Permian Basin.


•	NSP-Wisconsin’s residential sales decline was primarily attributable to lower use per customer partially offset by customer additions. C&I growth was largely due to increased sales to small and large sand mining and energy industry customers.

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Weather-normalized Natural Gas Sales Growth


•	Across most service territories, higher natural gas sales reflect an increase in the number of customers combined with increasing customer use.

Electric Revenues and Margin

Electric revenues and fuel and purchased power expenses are impacted by fluctuations in the price of natural gas, coal and uranium used in the generation of electricity. However, these price fluctuations have minimal impact on electric margin due to fuel recovery mechanisms that recover fuel expenses. The following table details the electric revenues and margin:



	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Electric revenues	$	2,333		$	2,299
Electric fuel and purchased power	(932		)	(925		)
Electric margin before impact of the TCJA	$	1,401		$	1,374
Impact of the TCJA (offset as a reduction in income tax expense)	(63		)	—
Electric margin	$	1,338		$	1,374

The following tables summarize the components of the changes in electric revenues and electric margin:

Electric Revenues



(Millions of Dollars)	Three Months Ended March 31, 2018 vs. 2017
Fuel and purchased power cost recovery	$	(12	)
Firm wholesale	(7		)
Trading	21
Estimated impact of weather, net of Minnesota decoupling	15
Retail rate increase (Wisconsin)	5
Other, net	12
Total increase in electric revenues before impact of the TCJA	$	34
Impact of the TCJA (offset as a reduction in income tax expense)	(63		)
Total decrease in electric revenues	$	(29	)

Electric Margin



(Millions of Dollars)	Three Months Ended March 31, 2018 vs. 2017
Firm wholesale	$	(7	)
Estimated impact of weather, net of Minnesota decoupling	15
Purchased capacity costs	11
Retail rate increase (Wisconsin)	5
Other, net	3
Total increase in electric margin before impact of the TCJA	$	27
Impact of the TCJA (offset as a reduction in income tax expense)	(63		)
Total decrease in electric margin	$	(36	)

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Natural Gas Revenues and Margin

Total natural gas expense varies with changing sales and the cost of natural gas. However, fluctuations in the cost of natural gas has minimal impact on natural gas margin due to natural gas cost recovery mechanisms. The following table details natural gas revenues and margin:



	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Natural gas revenues	$	673		$	626
Cost of natural gas sold and transported	(375		)	(365		)
Natural gas margin before impact of the TCJA	$	298		$	261
Impact of the TCJA (offset as a reduction in income tax expense)	(11		)	$	—
Natural gas margin	$	287		$	261

The following tables summarize the components of the changes in natural gas revenues and natural gas margin:

Natural Gas Revenues



(Millions of Dollars)	Three Months Ended March 31, 2018 vs. 2017
Estimated impact of weather	$	15
Retail rate increase (Colorado - interim, subject to refund, Wisconsin and Michigan)	12
Purchased natural gas adjustment clause recovery	9
Infrastructure and integrity riders	4
Sales growth	2
Other, net	5
Total increase in natural gas revenues before impact of the TCJA	$	47
Impact of the TCJA (offset as a reduction in income tax expense)	(11		)
Total increase in natural gas revenues	$	36

Natural Gas Margin



(Millions of Dollars)	Three Months Ended March 31, 2018 vs. 2017
Estimated impact of weather	$	15
Retail rate increase (Colorado - interim, subject to refund, Wisconsin and Michigan)	12
Infrastructure and integrity riders	4
Sales growth	2
Other, net	4
Total increase in natural gas margin before impact of the TCJA	$	37
Impact of the TCJA (offset as a reduction in income tax expense)	(11		)
Total increase in natural gas margin	$	26

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Non-Fuel Operating Expenses and Other Items

O&M Expenses — O&M expenses decreased $23 million, or 4.0 percent, for the first quarter of 2018, largely reflecting expense timing. The significant changes are summarized in the table below:



(Millions of Dollars)	Three Months Ended March 31, 2018 vs. 2017
Nuclear plant operations and amortization	$	(10	)
Plant generation costs	(9		)
Other, net	(4		)
Total decrease in O&M expenses	$	(23	)


•	Nuclear plant operations and amortization expenses are lower largely reflecting expense timing, savings initiatives and reduced refueling outage costs.


•	Plant generation costs decreased primarily due to the timing of planned maintenance and overhauls at a number of generation facilities.

Conservation and DSM Expenses — Conservation and DSM expenses increased $3 million, or 4.4 percent, for the first quarter of 2018. The increase was primarily due to higher recovery rates for Colorado electric and natural gas sales. Increased participation in Minnesota natural gas conservation programs was partially offset by lower recovery rates. Conservation and DSM expenses are generally recovered in our major jurisdictions concurrently through riders and base rates. Timing of recovery may not correspond to the period in which costs were incurred.

Depreciation and Amortization — Depreciation and amortization increased $18 million, or 4.9 percent for the first quarter of 2018. The increase was primarily driven by capital expenditures due to planned system investments.

Taxes (Other than Income Taxes) — Taxes (other than income taxes) increased $3 million, or 2.1 percent for the first quarter of 2018. The increase was primarily due to higher property taxes in Colorado.

AFUDC, Equity and Debt — AFUDC increased $13 million for the first quarter of 2018. The increase was primarily due to the Rush Creek wind project in Colorado and other capital investments.

Interest Charges — Interest charges increased $5 million, or 3.0 percent, for the first quarter of 2018. The increase was related to higher debt levels to fund capital investments, partially offset by refinancings at lower interest rates.

Income Taxes — Income tax expense decreased $58 million for the first quarter of 2018 compared with the same period in 2017. The decrease was primarily driven by a lower federal tax rate due to the TCJA, an increase in wind PTCs, an increase in plant-related regulatory differences related to ARAM and an increase in other tax credits. This was partially offset by the deferral of ARAM. The ETR was 16.9 percent for the first quarter of 2018 compared with 32.9 percent for the same period in 2017. The lower ETR in 2018 is primarily due to the items referenced above. See Note 4.

Public Utility Regulation

Except to the extent noted below, the circumstances set forth in Public Utility Regulation included in Item 1 of Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017 appropriately represent, in all material respects, the current status of public utility regulation and are incorporated herein by reference.

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NSP-Minnesota

PPA Terminations and Amendments — In 2017, NSP-Minnesota filed requests with the MPUC and NDPSC to terminate or amend various PPAs to reduce future costs for customers, which are anticipated to result in excess of $600 million in net cost savings to NSP System customers over the next 10 years. In January 2018, the MPUC issued an order approving NSP-Minnesota’s petition to terminate the PPAs with Benson Power LLC (Benson) and Laurentian Energy Authority I, LLC (Laurentian), as well as purchase and close the Benson biomass facility. In March 2018, the MPUC denied requests by several parties to reconsider its approval to terminate the Benson and Laurentian PPAs. NSP-Minnesota reached a settlement agreement with the NDPSC Staff which allows for the termination of the PPAs with Benson and Laurentian, as well as the purchase and closure of the Benson biomass facility. A NDPSC decision is anticipated in May 2018.

Wind Development — In 2017, the MPUC approved NSP-Minnesota’s proposal to add 1,550 MW of new wind generation including ownership of 1,150 MW of wind generation. NSP-Minnesota plans to submit updates including TCJA impacts on the new wind generation to the MPUC and NDPSC in May 2018. The timing of a NDPSC order is uncertain. The regulatory filing updates are not expected to impact the timing of these projects which are expected to be completed by the end of 2020 and qualify for 100 percent of the PTC. NSP-Minnesota’s total capital investment for these wind ownership projects is expected to be approximately $1.9 billion.

In 2017, NSP-Minnesota filed with the MPUC seeking approval to build and own the Dakota Range, a 300 MW wind project in South Dakota. The project is expected to be placed into service by the end of 2021 and qualify for 80 percent of the PTC. In March 2018, NSP-Minnesota submitted supplemental filings to the MPUC and NDPSC regarding the impacts of the TCJA and other updated information for Dakota Range. These impacts result in a minimal increase in the revenue requirement for Dakota Range and the project continues to show significant benefits to customers. In April 2018, the MPUC approved NSP-Minnesota’s petition to build and own the Dakota Range. A NDPSC decision is pending.

These wind projects are expected to provide significant savings to NSP-Minnesota’s customers and substantial environmental benefits. Projected savings/benefits assume fuel costs and generation mix consistent with various commission approved resource plans.

Minnesota State Right-Of-First Refusal (ROFR) Statute Complaint — In September 2017, LSP Transmission Holdings, LLC (LSP Transmission) filed a complaint in the U.S. District Court for the District of Minnesota (Minnesota District Court) against the Minnesota Attorney General, the MPUC and the DOC. The complaint was in response to MISO assigning NSP-Minnesota and ITC Midwest, LLC to jointly own a new 345 KV transmission line from near Mankato, Minn. to Winnebago, Minn. The line was estimated by MISO to cost $103 million. The project was assigned to NSP-Minnesota and ITC Midwest as the incumbent utilities, consistent with a Minnesota state ROFR statute. The complaint challenges the constitutionality of the state ROFR statute and is seeking declaratory judgment that the statute violates the Commerce Clause of the U.S. Constitution and should not be enforced. The Minnesota state agencies and NSP-Minnesota filed motions to dismiss. In April 2018, the Antitrust Division of the United States Department of Justice, filed a statement in support of LSP Transmission’s position that the statute is unconstitutional. The matter is pending before the Minnesota District Court. The timing and outcome of the litigation is uncertain.

Nuclear Power Operations

NSP-Minnesota owns two nuclear generating plants: the Monticello plant and the PI plant. See Note 12 of NSP-Minnesota’s Annual Report on Form 10-K for the year ended Dec. 31, 2017 for further discussion regarding the nuclear generating plants. The circumstances set forth in Nuclear Power Operations and Waste Disposal included in Item 1 of NSP-Minnesota’s Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of nuclear power operations, and are incorporated herein by reference.

NSP-Wisconsin

2017 Electric Fuel Cost Recovery — NSP-Wisconsin’s electric fuel costs for 2017 were lower than authorized in rates and outside the two percent annual tolerance band, primarily due to lower purchased power costs coupled with moderate weather and generation sales into the MISO market. Under the fuel cost recovery rules, NSP-Wisconsin may retain approximately $4 million of fuel costs and defer the amount of over-recovery in excess of the two percent annual tolerance band for future refund to customers. In March 2018, NSP-Wisconsin filed a reconciliation of 2017 fuel costs with the PSCW indicating a refund liability of approximately $10 million. The final amount of the refund is subject to review and approval by the PSCW, which is expected in mid- 2018.

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PSCo

Colorado Energy Plan (CEP) — In 2016, PSCo filed its 2016 Electric Resource Plan (ERP) which included the estimated need for additional generation resources through spring of 2024. In 2017, PSCo filed an updated capacity need with the CPUC of 450 MW in 2023.

In 2017, PSCo and various other stakeholders filed a stipulation agreement (Stipulation) proposing the CEP, an alternative plan that increases the amount of new renewable resources sought under the ERP. The CEP would increase PSCo’s potential capacity need up to 1,110 MW due to the proposed retirement of two coal units. The major components include:


•	Early retirement of 660 MWs of coal-fired generation at Comanche Units 1 (2022) and 2 (2025);


•	Accelerated depreciation for the early retirement of the two Comanche units and establishment of a regulatory asset to collect the incremental depreciation expense and related costs;


•	A request for proposal (RFP) for up to 1,000 MW of wind, 700 MW of solar and 700 MW of natural gas and/or storage;


•	Utility ownership targets of 50 percent renewable generation resources and 75 percent of natural gas-fired, storage, or renewable with storage generation resources; and


•	Reduction of the renewable energy standard adjustment rider (RESA), from two percent to one percent effective beginning 2021 or 2022.

In March 2018, the CPUC required additional portfolio requirements beyond the terms of the Stipulation. The CPUC requested PSCo to present 750 MW and 1,100 MW portfolios, and to include a least-cost portfolio in addition to the recommended portfolio. They also requested a scenario without the RESA reduction offsetting the cost of accelerated depreciation. The order did not explicitly approve the Stipulation and deferred action on issues such as the treatment of accelerated depreciation which is being addressed in a separate proceeding.

PSCo is currently evaluating bids from a RFP and anticipates filing its recommended portfolios in May 2018. A CPUC decision on the recommended portfolio is anticipated in the summer of 2018.

Mountain West Transmission Group (MWTG) — PSCo, along with nine other electric service providers from the Rocky Mountain region, had considered creating and operating a joint transmission tariff to increase wholesale market efficiency and improve regional transmission planning. The MWTG sought opportunities to reduce customer costs, and maximize resource and electric grid utilization. Negotiations with the SPP commenced in 2017 in order to develop potential terms for participation in the Regional Transmission Organization. As these negotiations developed, PSCo determined that the likely level of benefits was not sufficient to support continued engagement. On April 20, 2018, PSCo notified SPP, regulators and the other MWTG utility members that it was ending its participation in the regional effort.

Public Utility Regulatory Policies Act (PURPA) Enforcement Complaint against CPUC — Sustainable Power Group, LLC (sPower) has proposed to construct 800 MW of solar generation and 700 MW of wind generation in Colorado and is seeking to require PSCo to contract for these resources under PURPA. In 2017, sPower filed a complaint for declaratory and injunctive relief in the United States District Court for the District of Colorado (District Court) requesting that the court find a December 2016 CPUC ruling that a qualifying facility must be a successful bidder in a PSCo resource acquisition bidding process violated PURPA and FERC rules. PSCo intervened in that proceeding and the CPUC filed a motion to dismiss. In June 2017, the United States Magistrate Judge issued a recommendation to the District Court that sPower’s complaint be dismissed because sPower failed to establish that it faced a substantial risk of harm. In October 2017, the District Court denied the CPUC’s motion to dismiss and instead allowed sPower to file an amended complaint. The case effectively started over, and PSCo intervened. The CPUC filed a motion to dismiss the amended complaint which is currently pending before the District Court. In February 2018, the Magistrate Judge recommended the CPUC motion to dismiss be denied. The CPUC and PSCo filed objections in March 2018. The timing of a resolution in this case is unclear.

OATT Reform — In late March 2018, PSCo filed for changes to its OATT with the FERC. The tariff change would allow large generating interconnection agreements to be suspended only due to a force majeure event and would apply only to new contracts on a prospective basis. In April 2018, certain parties filed comments opposing the PSCo tariff change. FERC action is pending. PSCo has also initiated a larger stakeholder process to achieve broader queue reform and anticipates filing additional tariff changes later in 2018. On April 19, 2018, FERC issued a final rule requiring queue reforms in addition (but generally complimentary) to reforms PSCo already contemplated; compliance tariff filings will be due in third quarter 2018. PSCo currently has more than 22,000 MW of new generator projects in its interconnection queue.

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SPS

Lubbock Power & Light’s (LP&L’s) Request for Participation in Electric Reliability Council of Texas (ERCOT) — In September 2017, LP&L filed its application with the PUCT and proposed to transition a portion of its load to ERCOT no later than June 2021. As a result of LP&L’s proposal, approximately $18 million in wholesale transmission revenue would be reallocated to remaining SPS transmission customers at the time of the load transition. In November 2017, SPS and various other parties, including the PUCT Staff, filed direct testimony in response to LP&L’s application. SPS proposed an Interconnection Switching Fee to be determined by the PUCT.

In February 2018, SPS, LP&L, the PUCT Staff and various other parties filed a stipulation that provides SPS’ customers with an Interconnection Switching Fee of approximately $24 million to compensate them for the transfer of LP&L’s load from SPP to ERCOT. Under the settlement, SPS would allocate the Interconnection Switching Fee to its Texas and New Mexico retail and wholesale transmission customers through a bill credit following LP&L’s load transition to ERCOT. The PUCT approved the stipulation in March 2018. LP&L has announced its intention to transfer to ERCOT effective June 1, 2021.

Texas State Right of First Refusal (ROFR) Request for Declaratory Order — In February 2017, SPS and SPP filed a joint petition with the PUCT for a declaratory order regarding SPS’ ROFR. SPS contended that Texas law grants an incumbent electric utility, operating in areas outside of ERCOT, the ROFR to construct new transmission facilities located in the utility’s service area. SPP stated that Texas law does not provide a clear statement regarding the ROFR for incumbent utilities and therefore SPP was abiding by the portion of its OATT, which requires competitive solicitation to construct and operate new transmission facilities within areas of Texas’ SPP footprint.

In October 2017, the PUCT issued an order finding that SPS does not possess an exclusive right to construct and operate transmission facilities within its service area. In January 2018, SPS and two other parties filed appeals of the PUCT’s order in the Texas State District Court. The appeals have been consolidated and the case is being briefed.

Wind Proposals — In 2017, SPS filed proposals with the NMPRC and the PUCT to build, own and operate 1,000 MW of new wind generation through two wind farms (the Hale wind project in Texas and the Sagamore wind project in New Mexico) for a cost of approximately $1.6 billion. In addition, the proposal includes a purchased power agreement for 230 MW of wind.

In March 2018, the NMPRC approved SPS’ request consistent with the terms of SPS’ and the parties’ modified unanimous settlement. The key terms of the settlement are:


•	An investment cap of $1,675 per kilowatt, which is equal to 102.5 percent of the estimated construction costs;


•	SPS customers would receive a credit to their bills if actual capacity factors fall below 48 percent;


•	SPS customers would receive 100 percent of the federal PTC; and


•	SPS will sell the output from the two wind farms into the market and keep the revenue and the grossed-up PTCs during the time the rate case is pending before the wind projects go into base rates. If the market revenue and grossed up PTC value exceeds the estimated revenue requirement, SPS will refund the excess amount to customers as an additional customer protection during the interim period.

In February 2018, SPS and the parties filed an unopposed settlement with the PUCT. The key terms of the settlement are similar to the terms approved by the NMPRC above except that the ratemaking treatment of the market revenues and grossed-up PTCs will be treated in a traditional ratemaking manner and the effective date of the rates in the rate cases placing the wind farms in rates will be 35 days after SPS files the rate cases.

In April 2018, the PUCT requested additional information regarding the settlement. SPS filed a response and the PUCT is scheduled to consider the settlement April 27, 2018.

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Summary of Recent Federal Regulatory Developments

FERC

The FERC has jurisdiction over rates for electric transmission service in interstate commerce and electricity sold at wholesale, hydro facility licensing, natural gas transportation, asset transactions and mergers, accounting practices and certain other activities of Xcel Energy Inc.’s utility subsidiaries and transmission-only subsidiaries, including enforcement of North American Electric Reliability Corporation mandatory electric reliability standards. State and local agencies have jurisdiction over many of Xcel Energy Inc.’s utility subsidiaries’ activities, including regulation of retail rates and environmental matters. See additional discussion in the summary of recent federal regulatory developments and public utility regulation sections of the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017. In addition to the matters discussed below, see Note 5 to the consolidated financial statements for a discussion of other regulatory matters.

Xcel Energy attempts to mitigate the risk of regulatory penalties through formal training on prohibited practices and a compliance function that reviews interaction with the markets under FERC and Commodity Futures Trading Commission jurisdictions. Public campaigns are conducted to raise awareness of the public safety issues of interacting with our electric systems. While programs to comply with regulatory requirements are in place, there is no guarantee the compliance programs or other measures will be sufficient to ensure against violations.

FERC Order, ROE Policy — In June 2014, the FERC adopted a two-step ROE methodology for electric utilities in an order (Opinion 531) issued in a complaint proceeding involving New England Transmission Owners (NETOs). The issue of how to apply the FERC ROE methodology has been contested in various complaint proceedings, including two ROE complaints involving the MISO TOs, which include NSP-Minnesota and NSP-Wisconsin. In April 2017, the D.C. Circuit vacated and remanded the June 2014 ROE order. The D.C. Circuit found that the FERC had not properly determined that the ROE authorized for the NETOs prior to June 2014 was unjust and unreasonable. The D.C. Circuit also found that the FERC failed to justify the new ROE methodology. The FERC has yet to act on the D.C. Circuit’s decision. See Note 5 to the consolidated financial statements for discussion of the D.C. Circuit’s decision and the impact on the MISO ROE Complaints.

Derivatives, Risk Management and Market Risk

Xcel Energy Inc. and its subsidiaries are exposed to a variety of market risks in the normal course of business. Market risk is the potential loss that may occur as a result of adverse changes in the market or fair value of a particular instrument or commodity. All financial and commodity-related instruments, including derivatives, are subject to market risk. See Note 8 to the consolidated financial statements for further discussion of market risks associated with derivatives.

Xcel Energy is exposed to the impact of adverse changes in price for energy and energy-related products, which is partially mitigated by the use of commodity derivatives. In addition to ongoing monitoring and maintaining credit policies intended to minimize overall credit risk, when necessary, management takes steps to mitigate changes in credit and concentration risks associated with its derivatives and other contracts, including parental guarantees and requests of collateral. While Xcel Energy expects that the counterparties will perform under the contracts underlying its derivatives, the contracts expose Xcel Energy to some credit and non-performance risk.

Though no material non-performance risk currently exists with the counterparties to Xcel Energy’s commodity derivative contracts, distress in the financial markets may in the future impact that risk to the extent it impacts those counterparties. Distress in the financial markets may also impact the fair value of the securities in the nuclear decommissioning fund and master pension trust, as well as Xcel Energy’s ability to earn a return on short-term investments of excess cash.

Commodity Price Risk — Xcel Energy Inc.’s utility subsidiaries are exposed to commodity price risk in their electric and natural gas operations. Commodity price risk is managed by entering into long- and short-term physical purchase and sales contracts for electric capacity, energy and energy-related products and for various fuels used in generation and distribution activities. Commodity price risk is also managed through the use of financial derivative instruments. Xcel Energy’s risk management policy allows it to manage commodity price risk within each rate-regulated operation to the extent such exposure exists.

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At March 31, 2018, the fair values by source for net commodity trading contract assets were as follows:



	Futures / Forwards
(Millions of Dollars)	Source of Fair Value	Maturity Less Than 1 Year		Maturity 1 to 3 Years		Maturity 4 to 5 Years		Maturity Greater Than 5 Years		Total Futures/ Forwards Fair Value
NSP-Minnesota	1	$	4	$	9	$	1	$	1	$	15
PSCo	1	1		—		—		—		1
		$	5	$	9	$	1	$	1	$	16

1 — Prices actively quoted or based on actively quoted prices.

Changes in the fair value of commodity trading contracts before the impacts of margin-sharing mechanisms were as follows:



	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Fair value of commodity trading net contract assets outstanding at Jan. 1	$	16		$	9
Contracts realized or settled during the period	(2		)	—
Commodity trading contract additions and changes during the period	3			1
Fair value of commodity trading net contract assets outstanding at March 31	$	17		$	10

At March 31, 2018, a 10 percent increase in market prices for commodity trading contracts would decrease pretax income from continuing operations by approximately $1 million, whereas a 10 percent decrease would increase pretax income from continuing operations by approximately $1 million. At March 31, 2017, a 10 percent increase in market prices for commodity trading contracts would decrease pretax income from continuing operations by approximately $1 million, whereas a 10 percent decrease would increase pretax income from continuing operations by approximately $1 million.

Xcel Energy Inc.’s utility subsidiaries’ wholesale and commodity trading operations measure the outstanding risk exposure to price changes on transactions, contracts and obligations that have been entered into, but not closed, using an industry standard methodology known as Value at Risk (VaR). VaR expresses the potential change in fair value on the outstanding transactions, contracts and obligations over a particular period of time under normal market conditions.

The VaRs for the NSP-Minnesota and PSCo commodity trading operations, calculated on a consolidated basis using a Monte Carlo simulation with a 95 percent confidence level and a one-day holding period, were as follows:



(Millions of Dollars)	Three Months Ended March 31		VaR Limit		Average		High		Low
2018	$	0.32	$	3.00	$	0.22	$	0.57	$	0.10
2017	0.42		3.00		0.16		0.62		0.04

Nuclear Fuel Supply — NSP-Minnesota is scheduled to take delivery of approximately 58 percent of its 2018 and approximately 24 percent of its 2019 enriched nuclear material requirements from sources that could be impacted by current political/world events, including those related to Ukraine/Russia. Alternate potential sources are expected to provide the flexibility to manage NSP-Minnesota’s nuclear fuel supply to ensure that plant availability and reliability will not be negatively impacted in the near-term. Long-term, through 2024, NSP-Minnesota is scheduled to take delivery of approximately 35 percent of its average enriched nuclear material requirements from these sources. NSP-Minnesota is closely following the progression of these events and will periodically assess if further actions are required to assure a secure supply of enriched nuclear material.

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Separately, NSP-Minnesota has enriched nuclear fuel materials in process with Westinghouse Electric Corporation (Westinghouse). Westinghouse filed for Chapter 11 bankruptcy protection in March 2017. NSP-Minnesota owns materials in Westinghouse’s inventory and has contracts in place under which Westinghouse will provide certain services during an upcoming outage at PI. Westinghouse will provide nuclear fuel assemblies for the upcoming PI outage under the current nuclear fuel fabrication contract. Westinghouse has indicated its intention to continue to perform under the arrangements. Based on Westinghouse’s stated intent and the interim financing secured to fund its on-going operations, NSP-Minnesota does not expect the bankruptcy to materially impact NSP-Minnesota’s operational or financial performance. Westinghouse announced on Jan. 4, 2018 it has agreed to be acquired by Brookfield Business Partners LP and other institutional partners. Brookfield’s acquisition of Westinghouse is expected to close in the third quarter of 2018, subject to bankruptcy court and regulatory approvals. NSP-Minnesota will continue to monitor the Westinghouse acquisition process.

Interest Rate Risk — Xcel Energy is subject to the risk of fluctuating interest rates in the normal course of business. Xcel Energy’s risk management policy allows interest rate risk to be managed through the use of fixed rate debt, floating rate debt and interest rate derivatives such as swaps, caps, collars and put or call options.

At March 31, 2018 and 2017, a 100-basis-point change in the benchmark rate on Xcel Energy’s variable rate debt would impact pretax interest expense annually by approximately $11 million and $6 million, respectively. See Note 8 to the consolidated financial statements for a discussion of Xcel Energy Inc. and its subsidiaries’ interest rate derivatives.

NSP-Minnesota also maintains a nuclear decommissioning fund, as required by the NRC. The nuclear decommissioning fund is subject to interest rate risk and equity price risk. At March 31, 2018, the fund was invested in a diversified portfolio of cash equivalents, debt securities, equity securities, and other investments. These investments may be used only for activities related to nuclear decommissioning. Given the purpose and legal restrictions on the use of nuclear decommissioning fund assets, realized and unrealized gains on fund investments over the life of the fund are deferred as an offset of NSP-Minnesota’s regulatory asset for nuclear decommissioning costs. Consequently, any realized and unrealized gains and losses on securities in the nuclear decommissioning fund, including any other-than-temporary impairments, are deferred as a component of the regulatory asset for nuclear decommissioning. Since the accounting for nuclear decommissioning recognizes that costs are recovered through rates, fluctuations in equity prices or interest rates affecting the nuclear decommissioning fund do not have a direct impact on earnings.

Credit Risk — Xcel Energy Inc. and its subsidiaries are also exposed to credit risk. Credit risk relates to the risk of loss resulting from counterparties’ nonperformance on their contractual obligations. Xcel Energy Inc. and its subsidiaries maintain credit policies intended to minimize overall credit risk and actively monitor these policies to reflect changes and scope of operations.

At March 31, 2018, a 10 percent increase in commodity prices would have resulted in an increase in credit exposure of $22 million, while a decrease in prices of 10 percent would have resulted in an increase in credit exposure of $11 million. At March 31, 2017, a 10 percent increase in commodity prices would have resulted in an increase in credit exposure of $11 million, while a decrease in prices of 10 percent would have resulted in an increase in credit exposure of $2 million.

Xcel Energy Inc. and its subsidiaries conduct standard credit reviews for all counterparties. Xcel Energy employs additional credit risk control mechanisms when appropriate, such as letters of credit, parental guarantees, standardized master netting agreements and termination provisions that allow for offsetting of positive and negative exposures. Credit exposure is monitored and, when necessary, the activity with a specific counterparty is limited until credit enhancement is provided. Distress in the financial markets could increase Xcel Energy’s credit risk.

Fair Value Measurements

Xcel Energy follows accounting and disclosure guidance on fair value measurements that contains a hierarchy for inputs used in measuring fair value and requires disclosure of the observability of the inputs used in these measurements. See Note 8 to the consolidated financial statements for further discussion of the fair value hierarchy and the amounts of assets and liabilities measured at fair value that have been assigned to Level 3.

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Commodity Derivatives — Xcel Energy continuously monitors the creditworthiness of the counterparties to its commodity derivative contracts and assesses each counterparty’s ability to perform on the transactions set forth in the contracts. Given this assessment and the typically short duration of these contracts, the impact of discounting commodity derivative assets for counterparty credit risk was not material to the fair value of commodity derivative assets at March 31, 2018. Adjustments to fair value for credit risk of commodity trading instruments are recorded in electric revenues. Credit risk adjustments for other commodity derivative instruments are deferred as other comprehensive income (OCI) or regulatory assets and liabilities. The classification as a regulatory asset or liability is based on commission approved regulatory recovery mechanisms. Xcel Energy also assesses the impact of its own credit risk when determining the fair value of commodity derivative liabilities. The impact of discounting commodity derivative liabilities for credit risk was immaterial to the fair value of commodity derivative liabilities at March 31, 2018.

Commodity derivative assets and liabilities assigned to Level 3 typically consist of FTRs, as well as forwards and options that are long-term in nature. Level 3 commodity derivative assets and liabilities represent 0.9 percent and 3.7 percent of total assets and liabilities, respectively, measured at fair value at March 31, 2018.

Determining the fair value of FTRs requires numerous management forecasts that vary in observability, including various forward commodity prices, retail and wholesale demand, generation and resulting transmission system congestion. Given the limited transparency in the auction process, fair value measurements for FTRs have been assigned a Level 3. Level 3 commodity derivatives assets and liabilities included $13 million and $1 million of estimated fair values, respectively, for FTRs held at March 31, 2018.

Determining the fair value of certain commodity forwards and options can require management to make use of subjective price and volatility forecasts which extend to periods beyond those readily observable on active exchanges or quoted by brokers. When less observable forward price and volatility forecasts are significant to determining the value of commodity forwards and options, these instruments are assigned to Level 3. There were $6 million in Level 3 commodity derivative assets and no liabilities for options held at March 31, 2018. There were $2 million of Level 3 derivative assets held as forwards at March 31, 2018.

Liquidity and Capital Resources

Cash Flows



	Three Months Ended March 31
(Millions of Dollars)	2018		2017
Cash provided by operating activities	$	887	$	718

Net cash provided by operating activities increased $169 million for the three months ended March 31, 2018 compared with the three months ended March 31, 2017. The increase was primarily due to the timing of recovery of certain electric and natural gas riders and incentive programs, partially offset by lower net income, excluding amounts related to non-cash operating activities (e.g., depreciation and deferred tax expense).



	Three Months Ended March 31
(Millions of Dollars)	2018			2017
Cash used in investing activities	$	(872	)	$	(748	)

Net cash used in investing activities increased $124 million for the three months ended March 31, 2018 compared with the three months ended March 31, 2017. The increase was primarily attributable to higher capital expenditures related to the Rush Creek wind generation facility.



	Three Months Ended March 31
(Millions of Dollars)	2018		2017
Cash provided by financing activities	$	18	$	19

Net cash provided by financing activities was $18 million for the three months ended March 31, 2018 compared with net cash provided by financing activities of $19 million for the three months ended March 31, 2017. The change was primarily attributable to increased 2018 dividend payments.

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Capital Requirements

Xcel Energy expects to meet future financing requirements by periodically issuing short-term debt, long-term debt, common stock, hybrid and other securities to maintain desired capitalization ratios.

Regulation of Derivatives — In 2010, financial reform legislation was passed that provides for the regulation of derivative transactions amongst other provisions. The Commodity Futures Trading Commission ruled that swap dealing activity conducted by entities for the preceding 12 months under a notional limit, initially set at $8 billion, will fall under the general de minimis threshold and will not subject an entity to registering as a swap dealer. The de minimis threshold is scheduled to be reduced to $3 billion at the end of 2019. Xcel Energy’s current and projected swap activity is well below these de minimis thresholds. The bill also contains provisions that exempt certain derivatives end users from much of the clearing and margin requirements and Xcel Energy’s Board of Directors has renewed the end-user exemption on an annual basis. Xcel Energy is currently meeting all reporting requirements and transaction restrictions.

Pension Fund — Xcel Energy’s pension assets are invested in a diversified portfolio of domestic and international equity securities, short-term to long-duration fixed income securities, and alternative investments, including private equity, real estate and hedge funds.


•	In January 2018, contributions of $150 million were made across four of Xcel Energy’s pension plans;


•	In 2017, contributions of $162 million were made across four of Xcel Energy’s pension plans; and


•	For future years, contributions will be made as deemed appropriate based on evaluation of various factors including the funded status of the plans, minimum funding requirements, interest rates and expected investment returns.

Capital Sources

Short-Term Funding Sources — Xcel Energy uses a number of sources to fulfill short-term funding needs, including operating cash flow, notes payable, commercial paper and bank lines of credit. The amount and timing of short-term funding needs depend in large part on financing needs for construction expenditures, working capital and dividend payments.

Short-Term Investments — Xcel Energy Inc., NSP-Minnesota, NSP-Wisconsin, PSCo and SPS maintain cash operating and short-term investment accounts. At March 31, 2018, approximately $38 million of cash was held in these accounts.

Credit Facilities — NSP-Minnesota, NSP-Wisconsin, PSCo, SPS and Xcel Energy Inc. each have five-year credit agreements with a syndicate of banks. The total size of the five-year credit facilities is $2.75 billion, and each credit facility terminates in June 2021. NSP-Minnesota, PSCo, SPS and Xcel Energy Inc. each have the right to request an extension of the revolving credit facility termination date for two additional one-year periods. NSP-Wisconsin has the right to request an extension of the revolving credit facility termination date for an additional one-year period. All extension requests are subject to majority bank group approval.

Xcel Energy Inc. entered into a 364-Day Term Loan Agreement on Dec. 5, 2017 to borrow up to $500 million. As of March 31, 2018, Xcel Energy Inc. had drawn $500 million on the term loan. Xcel Energy Inc. may recommit for one additional 364-day period from the December 2018 maturity date, subject to majority consent from lenders.

As of April 23, 2018, Xcel Energy Inc. and its utility subsidiaries had the following committed credit facilities available to meet liquidity needs:



(Millions of Dollars)	Credit Facility ^(a)		Drawn ^(b)		Available		Cash		Liquidity
Xcel Energy Inc.	$	1,500	$	775	$	725	$	1	$	726
PSCo	700		54		646		1		647
NSP-Minnesota	500		36		464		1		465
SPS	400		19		381		1		382
NSP-Wisconsin	150		36		114		—		114
Total	$	3,250	$	920	$	2,330	$	4	$	2,334


^(a)	These credit facilities expire in June 2021, with the exception of Xcel Energy Inc.’s $500 million 364-day term loan agreement entered into in December 2017.


^(b)	Includes outstanding commercial paper, term loan borrowings and letters of credit.

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Short-Term Debt — Xcel Energy Inc., NSP-Minnesota, NSP-Wisconsin, PSCo and SPS each have individual commercial paper programs. The authorized levels for these commercial paper programs are:


•	$1 billion for Xcel Energy Inc.;


•	$700 million for PSCo;


•	$500 million for NSP-Minnesota;


•	$400 million for SPS; and


•	$150 million for NSP-Wisconsin.

In addition, Xcel Energy Inc. has a 364-day term loan agreement to borrow up to $500 million. At March 31, 2018, Xcel Energy Inc. had drawn $500 million on the term loan.

Short-term debt outstanding for Xcel Energy was as follows:



(Amounts in Millions, Except Interest Rates)	Three Months Ended March 31, 2018			Year Ended Dec. 31, 2017
Borrowing limit	$	3,250		$	3,250
Amount outstanding at period end	1,025			814
Average amount outstanding	1,000			644
Maximum amount outstanding	1,197			1,247
Weighted average interest rate, computed on a daily basis	1.93		%	1.35		%
Weighted average interest rate at period end	2.34			1.90

Money Pool — Xcel Energy received FERC approval to establish a utility money pool arrangement with the utility subsidiaries, subject to receipt of required state regulatory approvals. The utility money pool allows for short-term investments in and borrowings between the utility subsidiaries. Xcel Energy Inc. may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy Inc. The money pool balances are eliminated in consolidation.

NSP-Minnesota, PSCo and SPS participate in the money pool pursuant to approval from their respective state regulatory commissions. NSP-Wisconsin does not participate in the money pool.

Financing — Xcel Energy issues debt and equity securities to refinance retiring maturities, reduce short-term debt, fund capital programs, infuse equity in subsidiaries, fund asset acquisitions and for other general corporate purposes.

Xcel Energy Inc. and its utility subsidiaries’ 2018 financing plans reflect the following:


•	Xcel Energy Inc. plans to issue approximately $750 million of senior unsecured bonds;


•	NSP-Minnesota plans to issue approximately $300 million of first mortgage bonds;


•	NSP-Wisconsin plans to issue approximately $200 million of first mortgage bonds;


•	PSCo plans to issue approximately $750 million of first mortgage bonds; and


•	SPS plans to issue approximately $350 million of first mortgage bonds.

Xcel Energy also plans to issue approximately $300 million of incremental equity in 2018 in addition to $75 million of equity to be issued through the dividend reinvestment program and benefit programs.

Financing plans are subject to change, depending on capital expenditures, internal cash generation, market conditions and other factors.

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Off-Balance-Sheet Arrangements

Xcel Energy does not have any off-balance-sheet arrangements, other than those currently disclosed, that have or are reasonably likely to have a current or future effect on financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that is material to investors.

Earnings Guidance and Long-Term EPS and Dividend Growth Rate Objectives

Xcel Energy 2018 Earnings Guidance — Xcel Energy’s 2018 GAAP and ongoing earnings guidance is $2.37 to $2.47 per share.^(a) Key assumptions:


•	Constructive outcomes in all rate case and regulatory proceedings.


•	Normal weather patterns.


•	Weather-normalized retail electric sales are projected to be within a range of 0 percent to 0.5 percent over 2017 levels.


•	Weather-normalized retail firm natural gas sales are projected to be within a range of 0 percent to 0.5 percent over 2017 levels.


•	Capital rider revenue is projected to increase by $30 million to $40 million over 2017 levels. PTCs are flowed back to customers, primarily through capital riders and reductions to electric margin.


•	O&M expenses are projected to be flat to 2017 levels.


•	Depreciation expense is projected to increase approximately $120 million to $130 million over 2017 levels. The change is depreciation expense is largely due to the dismissal of the PSCo electric rate case, which delays the impact of higher depreciation rates.


•	Property taxes are projected to increase approximately $30 million to $40 million over 2017 levels.


•	Interest expense (net of AFUDC - debt) is projected to increase $30 million to $40 million over 2017 levels.


•	AFUDC - equity is projected to increase approximately $20 million to $30 million from 2017 levels.

•

The ETR is projected to be approximately 15 percent to 17 percent. This range may decrease to 8 percent to 10 percent as we receive clarity and direction from our commissions as to the treatment of excess deferred taxes that resulted from the TCJA. A reduction to the ETR resulting from the flowback of excess deferred taxes would be offset by a correlated reduction to revenue. Additionally, the lower ETR for 2018 compared to 2017 reflects additional PTCs which are flowed back to customers through margin.

^(a)

Ongoing earnings is calculated using net income and adjusting for certain nonrecurring or infrequent items that are, in management’s view, not reflective of ongoing operations. Ongoing earnings could differ from those prepared in accordance with GAAP for unplanned and/or unknown adjustments. Xcel Energy is unable to forecast if any of these items will occur or provide a quantitative reconciliation of the guidance for ongoing diluted EPS to corresponding GAAP diluted EPS.

Long-Term EPS and Dividend Growth Rate Objectives

Xcel Energy expects to deliver an attractive total return to our shareholders through a combination of earnings growth and dividend yield, based on the following long-term objectives:


•	Deliver long-term annual EPS growth of 5 percent to 6 percent off of a 2017 base of $2.30 per share;


•	Deliver annual dividend increases of 5 percent to 7 percent;


•	Target a dividend payout ratio of 60 percent to 70 percent; and


•	Maintain senior unsecured debt credit ratings in the BBB+ to A range.

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Item 3 — QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See Management’s Discussion and Analysis — Derivatives, Risk Management and Market Risk under Item 2.

Item 4 — CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Xcel Energy maintains a set of disclosure controls and procedures designed to ensure that information required to be disclosed in reports that it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms. In addition, the disclosure controls and procedures ensure that information required to be disclosed is accumulated and communicated to management, including the chief executive officer (CEO) and chief financial officer (CFO), allowing timely decisions regarding required disclosure. As of March 31, 2018, based on an evaluation carried out under the supervision and with the participation of Xcel Energy’s management, including the CEO and CFO, of the effectiveness of its disclosure controls and the procedures, the CEO and CFO have concluded that Xcel Energy’s disclosure controls and procedures were effective.

Internal Control Over Financial Reporting

No changes in Xcel Energy’s internal control over financial reporting occurred during the most recent fiscal quarter that materially affected, or are reasonably likely to materially affect, Xcel Energy’s internal control over financial reporting.

Part II — OTHER INFORMATION

Item 1 — LEGAL PROCEEDINGS

Additional Information

See Note 6 to the consolidated financial statements for further discussion of legal claims and environmental proceedings. See Part I Item 2 and Note 5 to the consolidated financial statements for a discussion of proceedings involving utility rates and other regulatory matters.

Item 1A — RISK FACTORS

Xcel Energy Inc.’s risk factors are documented in Item 1A of Part I of its Annual Report on Form 10-K for the year ended Dec. 31, 2017, which is incorporated herein by reference. There have been no material changes from the risk factors previously disclosed in the Form 10-K.

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Item 2 — UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

The following table provides information about our purchases of equity securities that are registered by Xcel Energy Inc. pursuant to Section 12 of the Exchange Act for the quarter ended March 31, 2018:



	Issuer Purchases of Equity Securities
Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs
Jan. 1, 2018 — Jan. 31, 2018	—	$	—	—	—
Feb. 1, 2018 — Feb. 28, 2018 ^(a)	22,039	42.97		—	—
March 1, 2018 — March 31, 2018 ^(b)	12,028	43.28		—	—
Total	34,067			—	—


^(a)	Xcel Energy Inc. or one of its agents periodically purchases common shares in order to satisfy obligations under the Stock Equivalent Plan for Non-Employee Directors.


^(b)	Xcel Energy Inc. withholds stock to satisfy tax withholding obligations on vesting of awards of restricted stock under the Xcel Energy Executive Annual Incentive Award Plan.

Item 6 — EXHIBITS

* Indicates incorporation by reference



3.01*	Amended and Restated Articles of Incorporation of Xcel Energy Inc., as filed on May 18, 2012 (Exhibit 3.01 to Form 8-K dated May 16, 2012 (file no. 001-03034)).
3.02*	Bylaws of Xcel Energy Inc., as amended on Feb. 17, 2016 (Exhibit 3.01 to Form 8-K dated Feb. 18, 2016 (file no. 001-03034)).
4.01*	Supplemental and Restated Trust Indenture, dated May 1, 1988, from Northern States Power Company to Harris Trust and Savings Bank, as Trustee, providing for the issuance of First Mortgage Bonds (Exhibit 4(b)(3) to Form S-3 of Xcel Energy, filed April 18, 2018 (file no. 333-224333)).
4.02*	Indenture, dated July 1, 1999, between Northern States Power Company and Norwest Bank Minnesota, National Association, as Trustee, providing for the issuance of Sr. Debt Securities (Exhibit 4(b)(7) to Form S-3 of Xcel Energy, filed April 18, 2018 (file no. 333-224333)).
4.03*	Indenture, dated as of Oct. 1, 1993, between PSCo and Morgan Guaranty Trust Company of New York, as trustee, providing for the issuance of first mortgage bonds (Exhibit 4(d)(3) to Form S-3 of Xcel Energy filed April 18, 2018 (file no. 333-224333)).
4.04*	Supplemental and Restated Indenture, dated March 1, 1991, between Northern States Power Company and First Wisconsin Trust Company, providing for the issuance of First Mortgage Bonds (Exhibit 4(c)(3) to Form S-3 of Xcel Energy filed April 18, 2018 (file no. 333-224333)).
31.01	Principal Executive Officer’s certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.02	Principal Financial Officer’s certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.01	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99.01	Statement pursuant to Private Securities Litigation Reform Act of 1995.
101	The following materials from Xcel Energy Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 are formatted in XBRL (eXtensible Business Reporting Language): (i) the Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive Income (iii) the Consolidated Statements of Cash Flows, (iv) the Consolidated Balance Sheets, (v) the Consolidated Statements of Common Stockholders’ Equity, (vi) Notes to Consolidated Financial Statements, and (vii) document and entity information.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



		XCEL ENERGY INC.

April 27, 2018	By:	/s/ JEFFREY S. SAVAGE
		Jeffrey S. Savage
		Senior Vice President, Controller
		(Principal Accounting Officer)

		/s/ ROBERT C. FRENZEL
		Robert C. Frenzel
		Executive Vice President, Chief Financial Officer
		(Principal Financial Officer)

Exhibit 31.01

CERTIFICATION

I, Ben Fowke, certify that:


1.	I have reviewed this report on Form 10-Q of Xcel Energy Inc. (a Minnesota corporation);


2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;


3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;


4.	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:


a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;


b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;


c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and


d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and


5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):


a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and


b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 27, 2018



	/s/ BEN FOWKE
	Ben Fowke
	Chairman, President, Chief Executive Officer and Director
	(Principal Executive Officer)

Exhibit 31.02

CERTIFICATION

I, Robert C. Frenzel, certify that:


1.	I have reviewed this report on Form 10-Q of Xcel Energy Inc. (a Minnesota corporation);


2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;


3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;


4.	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:


a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;


b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;


c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and


d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and


5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):


a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and


b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 27, 2018



	/s/ ROBERT C. FRENZEL
	Robert C. Frenzel
	Executive Vice President, Chief Financial Officer
	(Principal Financial Officer)

Exhibit 32.01

OFFICER CERTIFICATION

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Xcel Energy Inc. (Xcel Energy) on Form 10-Q for the quarter ended March 31, 2018, as filed with the SEC on the date hereof (Form 10-Q), each of the undersigned officers of Xcel Energy certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to such officer’s knowledge:


(1)	The Form 10-Q fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and


(2)	The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Xcel Energy as of the dates and for the periods expressed in the Form 10-Q.

Date: April 27, 2018



	/s/ BEN FOWKE
	Ben Fowke
	Chairman, President, Chief Executive Officer and Director
	(Principal Executive Officer)

	/s/ ROBERT C. FRENZEL
	Robert C. Frenzel
	Executive Vice President, Chief Financial Officer
	(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Xcel Energy and will be retained by Xcel Energy and furnished to the SEC or its staff upon request.

Exhibit 99.01

XCEL ENERGY CAUTIONARY FACTORS

The Private Securities Litigation Reform Act provides a “safe harbor” for forward-looking statements to encourage disclosures without the threat of litigation, providing those statements are identified as forward-looking and are accompanied by meaningful, cautionary statements identifying important factors that could cause the actual results to differ materially from those projected in the statement. Forward-looking statements are made in written documents and oral presentations of Xcel Energy Inc. or any of its subsidiaries. These statements are based on management’s beliefs as well as assumptions and information currently available to management. Such forward-looking statements are intended to be identified in this document by the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “objective,” “outlook,” “plan,” “project,” “possible,” “potential,” “should” and similar expressions. In addition to any assumptions and other factors referred to specifically in connection with such forward-looking statements, factors that could cause Xcel Energy’s actual results to differ materially from those contemplated in any forward-looking statements include, among others, the following:


•	Economic conditions, including inflation rates, monetary fluctuations and their impact on capital expenditures;


•	The risk of a significant slowdown in growth or decline in the U.S. economy, the risk of delay in growth recovery in the U.S. economy or the risk of increased cost for insurance premiums, security and other items as a consequence of past or future terrorist attacks;


•	Trade, monetary, fiscal, taxation and environmental policies of governments, agencies and similar organizations in geographic areas where Xcel Energy has a financial interest;


•	Customer business conditions, including demand for their products or services and supply of labor and materials used in creating their products and services;


•	Financial or regulatory accounting principles or policies imposed by the FASB, the SEC, the FERC and similar entities with regulatory oversight;


•	Availability of cost or capital such as changes in: interest rates; market perceptions of the utility industry, Xcel Energy Inc. or any of its subsidiaries; or security ratings;

•

Factors affecting utility and nonutility operations such as unusual weather conditions; catastrophic weather-related damage; unscheduled generation outages, maintenance or repairs; unanticipated changes to fossil fuel, nuclear fuel or natural gas supply costs or availability due to higher demand, shortages, transportation problems or other developments; nuclear or environmental incidents; cyber incidents; or electric transmission or natural gas pipeline constraints;


•	Employee workforce factors, including loss or retirement of key executives, collective-bargaining agreements with union employees, or work stoppages;


•	Increased competition in the utility industry or additional competition in the markets served by Xcel Energy Inc. and its subsidiaries;

•

State, federal and foreign legislative and regulatory initiatives that affect cost and investment recovery, have an impact on rate structures and affect the speed and degree to which competition enters the electric and natural gas markets; industry restructuring initiatives; transmission system operation and/or administration initiatives; recovery of investments made under traditional regulation; nature of competitors entering the industry; retail wheeling; a new pricing structure; and former customers entering the generation market;


•	Environmental laws and regulations, including legislation and regulations relating to climate change, and the associated cost of compliance;


•	Rate-setting policies or procedures of regulatory entities, including environmental externalities, which are values established by regulators assigning environmental costs to each method of electricity generation when evaluating generation resource options;


•	Nuclear regulatory policies and procedures, including operating regulations and spent nuclear fuel storage;


•	Social attitudes regarding the utility and power industries;


•	Cost and other effects of legal and administrative proceedings, settlements, investigations and claims;


•	Technological developments that result in competitive disadvantages and create the potential for impairment of existing assets;


•	Risks associated with implementations of new technologies; and


•	Other business or investment considerations that may be disclosed from time to time in Xcel Energy Inc.’s SEC filings, including “Risk Factors” in Item 1A of Xcel Energy’s Form 10-K for the year ended Dec. 31, 2017, or in other publicly disseminated written documents.

Xcel Energy undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. The foregoing review of factors should not be construed as exhaustive.

v3.8.0.1

Document and Entity Information - shares
3 Months Ended

Mar. 31, 2018

Apr. 23, 2018

Document and Entity Information [Abstract]

Entity Registrant Name XCEL ENERGY INC

Entity Central Index Key 0000072903

Current Fiscal Year End Date --12-31

Entity Well-known Seasoned Issuer Yes

Entity Voluntary Filers No

Entity Current Reporting Status Yes

Entity Filer Category Large Accelerated Filer

Entity Common Stock, Shares Outstanding 508,856,950

Document Fiscal Year Focus 2018

Document Fiscal Period Focus Q1

Document Type 10-Q

Amendment Flag false

Document Period End Date Mar. 31, 2018

v3.8.0.1

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($)
shares in Millions, $ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Operating revenues

Electric $ 2,270 $ 2,299

Natural gas 662 626

Other 19 21

Total operating revenues 2,951 2,946

Operating expenses

Electric fuel and purchased power 932 925

Cost of natural gas sold and transported 375 365

Cost of sales — other 8 9

Operating and maintenance expenses 557 580

Conservation and demand side management expenses 71 68

Depreciation and amortization 383 365

Taxes (other than income taxes) 145 142

Total operating expenses 2,471 2,454

Operating income 480 492

Other income, net 1 1

Equity earnings of unconsolidated subsidiaries 6 8

Allowance for funds used during construction — equity 23 14

Interest charges and financing costs

Interest charges — includes other financing costs of $6 and $6, respectively 171 166

Allowance for funds used during construction — debt (11) (7)

Total interest charges and financing costs 160 159

Income before income taxes 350 356

Income taxes 59 117

Net income $ 291 $ 239

Weighted average common shares outstanding:

Basic (in shares) 509.0 508.3

Diluted (in shares) 509.0 508.8

Earnings per average common share:

Basic (in dollars per share) $ 0.57 $ 0.47

Diluted (in dollars per share) 0.57 0.47

Cash dividends declared per common share (in dollars per share) $ 0.38 $ 0.36

v3.8.0.1

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Interest charges and financing costs

Other financing costs $ 6 $ 6

v3.8.0.1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Comprehensive income:

Net income $ 291 $ 239

Pension and retiree medical benefits:

Amortization of losses included in net periodic benefit cost, net of tax of $0 and $1, respectively 1 1

Derivative instruments:

Reclassification of losses to net income, net of tax of $0 and $1, respectively 0 1

Other comprehensive income 1 2

Comprehensive income $ 292 $ 241

v3.8.0.1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Pension and retiree medical benefits:

Amortization of losses included in net periodic benefit cost, tax $ 0 $ 1

Derivative instruments:

Reclassification of losses to net income, tax $ 0 $ 1

v3.8.0.1

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Operating activities

Net income $ 291 $ 239

Adjustments to reconcile net income to cash provided by operating activities:

Depreciation and amortization 387 369

Nuclear fuel amortization 31 31

Deferred income taxes 59 194

Allowance for equity funds used during construction (23) (14)

Equity earnings of unconsolidated subsidiaries (6) (8)

Dividends from unconsolidated subsidiaries 9 12

Share-based compensation expense 6 18

Other, net (1) 4

Changes in operating assets and liabilities:

Accounts receivable (71) 3

Accrued unbilled revenues 159 174

Inventories 118 88

Other current assets 1 (77)

Accounts payable (42) (144)

Net regulatory assets and liabilities 147 18

Other current liabilities (17) (43)

Pension and other employee benefit obligations (146) (149)

Change in other noncurrent assets 2 0

Change in other noncurrent liabilities (17) 3

Net cash provided by operating activities 887 718

Investing activities

Utility capital/construction expenditures (883) (749)

Allowance for equity funds used during construction 23 14

Purchases of investment securities (185) (173)

Proceeds from the sale of investment securities 179 168

Investments in unconsolidated subsidiaries and other (3) (3)

Other, net (3) (5)

Net cash used in investing activities (872) (748)

Financing activities

Proceeds from short-term borrowings, net 211 213

Dividends paid (175) (173)

Other (18) (21)

Net cash provided by financing activities 18 19

Net change in cash and cash equivalents 33 (11)

Cash and cash equivalents at beginning of period 83 85

Cash and cash equivalents at end of period 116 74

Supplemental disclosure of cash flow information:

Cash paid for interest (net of amounts capitalized) (181) (174)

Supplemental disclosure of non-cash investing and financing transactions:

Property, plant and equipment additions in accounts payable 241 186

Issuance of common stock for equity awards $ 20 $ 12

v3.8.0.1

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Millions

Mar. 31, 2018

Dec. 31, 2017

Current assets

Cash and cash equivalents $ 116 $ 83

Accounts receivable, net 868 797

Accrued unbilled revenues 605 764

Inventories 492 610

Regulatory assets 422 424

Derivative instruments 28 44

Prepaid taxes 63 68

Prepayments and other 188 183

Total current assets 2,782 2,973

Property, plant and equipment, net 34,679 34,329

Other assets

Nuclear decommissioning fund and other investments 2,404 2,397

Regulatory assets 2,965 3,005

Derivative instruments 49 48

Other 280 278

Total other assets 5,698 5,728

Total assets 43,159 43,030

Current liabilities

Current portion of long-term debt 457 457

Short-term debt 1,025 814

Accounts payable 1,027 1,243

Regulatory liabilities 270 239

Taxes accrued 544 448

Accrued interest 147 174

Dividends payable 193 183

Derivative instruments 30 29

Other 429 501

Total current liabilities 4,122 4,088

Deferred credits and other liabilities

Deferred income taxes 3,905 3,845

Deferred investment tax credits 57 58

Regulatory liabilities 5,141 5,083

Asset retirement obligations 2,504 2,475

Derivative instruments 120 126

Customer advances 200 193

Pension and employee benefit obligations 884 1,042

Other 143 145

Total deferred credits and other liabilities 12,954 12,967

Commitments and contingencies

Capitalization

Long-term debt 14,522 14,520

Common stock — 1,000,000,000 shares authorized of $2.50 par value; 508,661,859 and 507,762,881 shares outstanding at March 31, 2018 and Dec. 31, 2017, respectively 1,272 1,269

Additional paid in capital 5,903 5,898

Retained earnings 4,510 4,413

Accumulated other comprehensive loss (124) (125)

Total common stockholders’ equity 11,561 11,455

Total liabilities and equity $ 43,159 $ 43,030

v3.8.0.1

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares

Mar. 31, 2018

Dec. 31, 2017

Capitalization, Long-term Debt and Equity

Common stock, shares authorized (in shares) 1,000,000,000 1,000,000,000

Common stock, par value (in dollars per share) $ 2.50 $ 2.50

Common stock, shares outstanding (in shares) 508,661,859 507,762,881

v3.8.0.1

CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Millions

Total

Common Stock

Additional Paid In Capital

Retained Earnings

Accumulated Other Comprehensive Loss

Beginning balance at Dec. 31, 2016 $ 11,021 $ 1,268 $ 5,881 $ 3,982 $ (110)

Balance (in shares) at Dec. 31, 2016 507,223,000

Increase (Decrease) in Stockholders' Equity

Net income 239 239

Other comprehensive income 2 2

Dividends declared on common stock (184) (184)

Issuances of common stock (in shares) 611,000

Issuances of common stock 5 $ 1 4

Purchase of common stock (in shares) (71,000)

Repurchases of common stock (3) $ 0 (3)

Share-based compensation (10) (9) (1)

Ending balance at Mar. 31, 2017 11,070 $ 1,269 5,873 4,036 (108)

Balance (in shares) at Mar. 31, 2017 507,763,000

Beginning balance at Dec. 31, 2017 $ 11,455 $ 1,269 5,898 4,413 (125)

Balance (in shares) at Dec. 31, 2017 507,762,881 507,763,000

Increase (Decrease) in Stockholders' Equity

Net income $ 291 291

Other comprehensive income 1 1

Dividends declared on common stock (194) (194)

Issuances of common stock (in shares) 921,000

Issuances of common stock 17 $ 3 14

Purchase of common stock (in shares) (22,000)

Repurchases of common stock (1) $ 0 (1)

Share-based compensation (8) (8) 0

Ending balance at Mar. 31, 2018 $ 11,561 $ 1,272 $ 5,903 $ 4,510 $ (124)

Balance (in shares) at Mar. 31, 2018 508,661,859 508,662,000

v3.8.0.1

Management's Opinion
3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Management's Opinion
In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly, in accordance with accounting principles generally accepted in the United States of America (GAAP), the financial position of Xcel Energy Inc. and its subsidiaries as of March 31, 2018 and Dec. 31, 2017; the results of its operations, including the components of net income and comprehensive income, and changes in stockholders’ equity for the three months ended March 31, 2018 and 2017; and its cash flows for the three months ended March 31, 2018 and 2017. All adjustments are of a normal, recurring nature, except as otherwise disclosed. Management has also evaluated the impact of events occurring after March 31, 2018 up to the date of issuance of these consolidated financial statements. These statements contain all necessary adjustments and disclosures resulting from that evaluation. The Dec. 31, 2017 balance sheet information has been derived from the audited 2017 consolidated financial statements included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017. These notes to the consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for Quarterly Reports on Form 10-Q. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP on an annual basis have been condensed or omitted pursuant to such rules and regulations. For further information, refer to the consolidated financial statements and notes thereto, included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, filed with the SEC on Feb. 23, 2018. Due to the seasonality of Xcel Energy’s electric and natural gas sales, interim results are not necessarily an appropriate base from which to project annual results.

v3.8.0.1

Summary of Significant Accounting Policies
3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies
Summary of Significant Accounting Policies

The significant accounting policies set forth in Note 1 to the consolidated financial statements in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of accounting policies and are incorporated herein by reference.

v3.8.0.1

Accounting Pronouncements
3 Months Ended

Mar. 31, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Pronouncements
Accounting Pronouncements

Recently Issued

Leases — In February 2016, the Financial Accounting Standards Board (FASB) issued Leases, Topic 842 (Accounting Standards Update (ASU) No. 2016-02), which for lessees requires balance sheet recognition of right-of-use assets and lease liabilities for most leases. This guidance will be effective for interim and annual reporting periods beginning after Dec. 15, 2018. Xcel Energy has not yet fully determined the impacts of implementation. However, adoption is expected to occur on Jan. 1, 2019 utilizing the practical expedients provided by the standard and proposed in Targeted Improvements, Topic 842 (Proposed ASU 2018-200). As such, agreements entered into prior to Jan. 1, 2019 that are currently considered leases are expected to be recognized on the consolidated balance sheet, including contracts for use of office space, equipment and natural gas storage assets, as well as certain purchased power agreements (PPAs) for natural gas-fueled generating facilities. Xcel Energy expects that similar agreements entered into after Dec. 31, 2018 will generally qualify as leases under the new standard.

Recently Adopted

Revenue Recognition — In May 2014, the FASB issued Revenue from Contracts with Customers, Topic 606 (ASU No. 2014-09), which provides a new framework for the recognition of revenue. Xcel Energy implemented the guidance on a modified retrospective basis on Jan. 1, 2018. Results for reporting periods beginning after Dec. 31, 2017 are presented in accordance with Topic 606, while prior period results have not been adjusted and continue to be reported in accordance with prior accounting guidance. Other than increased disclosures regarding revenues related to contracts with customers, the implementation did not have a significant impact on Xcel Energy’s consolidated financial statements. For related disclosures, see Note 14.

Classification and Measurement of Financial Instruments — In January 2016, the FASB issued Recognition and Measurement of Financial Assets and Financial Liabilities, Subtopic 825-10 (ASU No. 2016-01), which eliminated the available-for-sale classification for marketable equity securities and also replaced the cost method of accounting for non-marketable equity securities with a model for recognizing impairments and observable price changes. Under the new standard, other than when the consolidation or equity method of accounting is utilized, changes in the fair value of equity securities are recognized in earnings. Xcel Energy implemented the guidance on Jan. 1, 2018. As a result of application of accounting principles for rate regulated entities, changes in the fair value of the securities in the nuclear decommissioning fund, historically classified as available-for-sale, continue to be deferred to a regulatory asset, and the overall adoption impacts were not material.

Presentation of Net Periodic Benefit Cost — In March 2017, the FASB issued Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, Topic 715 (ASU No. 2017-07), which establishes that only the service cost element of pension cost may be presented as a component of operating income in the income statement. Also under the guidance, only the service cost component of pension cost is eligible for capitalization. As a result of application of accounting principles for rate regulated entities, a similar amount of pension cost, including non-service components, will be recognized consistent with the historical ratemaking treatment, and the impacts of adoption will be limited to changes in classification of non-service costs in the consolidated statement of income. Xcel Energy implemented the new guidance on Jan. 1, 2018, and as a result, $6 million of pension costs were retrospectively reclassified from operating and maintenance expenses to other income, net on the consolidated income statement for the three months ended March 31, 2017. Under a practical expedient permitted by the standard, Xcel Energy used benefit cost amounts disclosed for prior periods as the basis for retrospective application.

v3.8.0.1

Selected Balance Sheet Data
3 Months Ended

Mar. 31, 2018

Balance Sheet Related Disclosures [Abstract]

Selected Balance Sheet Data
Selected Balance Sheet Data
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Accounts receivable, net

Accounts receivable

$
921

$
849

Less allowance for bad debts

(53
)

(52
)

$
868

$
797

(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Inventories

Materials and supplies

$
311

$
311

Fuel

144

186

Natural gas

37

113

$
492

$
610

(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Property, plant and equipment, net

Electric plant

$
39,348

$
39,016

Natural gas plant

5,855

5,800

Common and other property

2,027

2,013

Plant to be retired ^(a)

11

11

Construction work in progress

2,339

2,087

Total property, plant and equipment

49,580

48,927

Less accumulated depreciation

(15,276
)

(15,000
)
Nuclear fuel

2,701

2,697

Less accumulated amortization

(2,326
)

(2,295
)

$
34,679

$
34,329

^(a)
In the third quarter of 2017, PSCo early retired Valmont Unit 5 and converted Cherokee Unit 4 from a coal-fueled generating facility to natural gas. PSCo also expects Craig Unit 1 to be early retired in approximately 2025. Amounts are presented net of accumulated depreciation.

v3.8.0.1

Income Taxes
3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes
Income Taxes

Except to the extent noted below, Note 6 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017 appropriately represents, in all material respects, the current status of other income tax matters, and is incorporated herein by reference.

Total income tax expense from operations differs from the amount computed by applying the statutory federal income tax rate to income before income tax expense. The following reconciles such differences:

Three Months Ended March 31

2018

2017
Federal statutory rate

21.0
%

35.0
%
State tax, net of federal tax effect

4.9
%

4.0
%
Increases (decreases) in tax from:

Wind production tax credits
(6.0
)

(4.0
)
Regulatory differences - ARAM^(a)
(5.8
)

(0.1
)
Regulatory differences - ARAM deferral ^(b)
5.4

—

Regulatory differences - other utility plant items
(1.0
)

(0.5
)
Other, net
(1.6
)

(1.5
)
Effective income tax rate

16.9
%

32.9
%

^(a)
The average rate assumption method (ARAM); a method to flow back excess deferred taxes to customers.
^(b)
As we receive direction from our regulatory commissions regarding the return of excess deferred taxes (to our customers resulting from the TCJA), the ARAM deferral may decrease during the year, which would result in a reduction to tax expense with a corresponding reduction to revenue.

Federal Audits — Xcel Energy files a consolidated federal income tax return. The statute of limitations applicable to Xcel Energy’s federal income tax returns expire as follows:
Tax Year(s)

Expiration
2009 - 2011

December 2018
2012 - 2013

October 2018
2014

September 2018
2015

September 2019
2016

September 2020

In 2012, the Internal Revenue Service (IRS) commenced an examination of tax years 2010 and 2011, including the 2009 carryback claim. The IRS proposed an adjustment to the federal tax loss carryback claims and in 2015, the IRS forwarded the issue to the Office of Appeals (Appeals). In 2017, Xcel Energy and Appeals reached an agreement and the benefit related to the agreed upon portions was recognized. As of March 31, 2018, the case has been forwarded to the Joint Committee on Taxation.

In the third quarter of 2015, the IRS commenced an examination of tax years 2012 and 2013. In the third quarter of 2017, the IRS concluded the audit of tax years 2012 and 2013 and proposed an adjustment that would impact Xcel Energy’s net operating loss (NOL) and effective tax rate (ETR). After evaluating the proposed adjustment, Xcel Energy filed a protest with the IRS. Xcel Energy anticipates the issue will be forwarded to Appeals. As of March 31, 2018, Xcel Energy has recognized its best estimate of income tax expense that will result from a final resolution of this issue; however, the outcome and timing of a resolution is unknown.

State Audits — Xcel Energy files consolidated state tax returns based on income in its major operating jurisdictions of Colorado, Minnesota, Texas, and Wisconsin, and various other state income-based tax returns. As of March 31, 2018, Xcel Energy’s earliest open tax years that are subject to examination by state taxing authorities in its major operating jurisdictions were as follows:
State

Year
Colorado

2009
Minnesota

2009
Texas

2009
Wisconsin

2012

•
In 2016, Minnesota began an audit of years 2010 through 2014. As of March 31, 2018, Minnesota had not proposed any material adjustments;
•
In 2016, Wisconsin began an audit of years 2012 and 2013. As of March 31, 2018, Wisconsin had not proposed any material adjustments; and
•
As of March 31, 2018, there were no other state income tax audits in progress.

Unrecognized Benefits — The unrecognized tax benefit balance includes permanent tax positions, which if recognized would affect the annual ETR. In addition, the unrecognized tax benefit balance includes temporary tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. A change in the period of deductibility would not affect the ETR but would accelerate the payment of cash to the taxing authority to an earlier period.

A reconciliation of the amount of unrecognized tax benefit is as follows:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Unrecognized tax benefit — Permanent tax positions

$
21

$
20

Unrecognized tax benefit — Temporary tax positions

19

19

Total unrecognized tax benefit

$
40

$
39

The unrecognized tax benefit amounts were reduced by the tax benefits associated with NOL and tax credit carryforwards. The amounts of tax benefits associated with NOL and tax credit carryforwards are as follows:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
NOL and tax credit carryforwards

$
(32
)

$
(31
)

It is reasonably possible that Xcel Energy’s amount of unrecognized tax benefits could significantly change in the next 12 months as the IRS Appeals progresses and audits resume, the Minnesota and Wisconsin audits progress, and other state audits resume. As the IRS Appeals and Minnesota and Wisconsin audits progress, it is reasonably possible that the amount of unrecognized tax benefit could decrease up to approximately $26 million.

The payable for interest related to unrecognized tax benefits is partially offset by the interest benefit associated with NOL and tax credit carryforwards. The payables for interest related to unrecognized tax benefits at March 31, 2018 and Dec. 31, 2017 were not material. No amounts were accrued for penalties related to unrecognized tax benefits as of March 31, 2018 or Dec. 31, 2017.

v3.8.0.1

Rate Matters
3 Months Ended

Mar. 31, 2018

Public Utilities, General Disclosures [Abstract]

Rate Matters
Rate Matters

Except to the extent noted below, the circumstances set forth in Note 12 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of other rate matters, and are incorporated herein by reference.

Tax Reform — Regulatory Proceedings

The specific impacts of the Tax Cuts and Jobs Act (TCJA) on customer rates are subject to regulatory approval. Each of the states in Xcel Energy’s service areas have opened dockets to address the impacts of the TCJA. Xcel Energy has made filings and is working with various stakeholders in its jurisdictions to determine the appropriate treatment for the TCJA.

NSP-Minnesota — The Minnesota Public Utility Commission (MPUC) opened a TCJA docket and issued a request for information on the impacts of the TCJA in January 2018. In March 2018, the Minnesota Department of Commerce (DOC) recommended adjusting rates or implementing refunds for the current tax impacts and incorporating the deferred tax impacts in each utility’s next rate case.

In April 2018, NSP-Minnesota filed an update of the estimated impact of the TCJA, which reflected an overall reduction in 2018 revenue requirements of approximately $136 million for electric and $7 million for natural gas. The filing also proposed recommended options for delivering tax reform benefits to customers. The proposed electric options included: customer refunds and rider impacts of $68 million, deferral of $44 million to allow for a rate case stay-out for 2020, acceleration of depreciation for the King coal plant of $22 million and low income program funding of $2 million. The proposed natural gas options included customer refunds and rider impacts of $3 million, with the remaining TCJA benefits deferred to mitigate increased costs in the next natural gas rate case. A MPUC decision is expected later in 2018.

Dockets have also been opened in North Dakota and South Dakota. In February 2018, NSP-Minnesota proposed using the reduced revenue requirements from the TCJA to defer planned future rate filings in both jurisdictions.

NSP-Wisconsin — In January 2018, the Public Service Commission of Wisconsin (PSCW) issued an order requiring public utilities to apply deferred accounting for the impacts of the TCJA. In March 2018, NSP-Wisconsin filed recommended plans for Wisconsin, which for electric operations included an option for an immediate bill credit for a portion of the tax savings in 2018 and 2019, while deferring the remainder until NSP-Wisconsin’s 2020 electric rate case. For the natural gas operations, NSP-Wisconsin proposed using the TCJA to reduce the unamortized regulatory asset for the Ashland/Northern States Power Lakefront Superfund Site (the Site) clean-up. A PSCW decision on the regulatory treatment of the TCJA is anticipated later in 2018.

For Michigan, NSP-Wisconsin has reached settlement in its electric rate case, which reflects the impacts of the TCJA, and has proposed customer refunds for natural gas operations.

PSCo — In January 2018, the Colorado Public Utilities Commission (CPUC) opened a statewide TCJA proceeding and ordered deferred accounting for all investor-owned utilities.

•
Colorado 2017 Multi-Year Natural Gas Rate Case - In February 2018, the administrative law judge (ALJ) approved PSCo and the CPUC Staff’s settlement agreement addressing the TCJA, which includes a $20 million reduction to provisional rates effective March 1, 2018. A final true-up, including any outcomes associated with the statewide proceeding, would provide customers the full net benefit of the TCJA effective January 2018. A CPUC decision is pending.

•
Colorado Electric - In April 2018, PSCo, the CPUC Staff and the OCC filed a TCJA settlement agreement with the CPUC that identified a reduction in electric revenue requirements of approximately $101 million for the TCJA in 2018. The settlement recommended a customer refund of $42 million in 2018, with the remainder of $59 million be used to accelerate the amortization of an existing prepaid pension asset. With the dismissal of the 2017 rate case, revisions to the TCJA settlement are required to address the impacts of the TCJA for 2019 until new base rates go into effect in connection with a future electric rate case that PSCo anticipates filing later this summer. A CPUC decision is pending.

SPS — In January 2018, the Public Utility Commission of Texas (PUCT) issued an order requiring utilities to apply deferred accounting for the impacts of the TCJA. In February 2018, SPS filed with the PUCT supplemental testimony, which indicated that the TCJA would reduce revenue requirements by approximately $32 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The impact of the TCJA is expected to be addressed as part of SPS’ pending Texas electric rate case, as discussed below.

In February 2018, SPS filed with the New Mexico Public Regulation Commission (NMPRC) a preliminary quantification of the impacts of the TCJA on its ongoing New Mexico 2017 electric rate case, which indicated that the TCJA would reduce revenue requirements by approximately $11 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The impact of the TCJA is expected to be addressed as part of SPS’ pending New Mexico electric rate case, as discussed below.

Federal Energy Regulatory Commission (FERC) Formula Rates — The FERC has not yet issued guidance on how or when electric utilities should reflect the impacts of the TCJA in FERC jurisdictional wholesale rates. The FERC issued a Notice of Inquiry (NOI) in March 2018 seeking comments on how to reflect the TCJA impacts in wholesale rates, in particular changes to accumulated deferred income taxes and bonus depreciation. Comments for the NOI are due in May 2018. However, FERC-approved formula rates for wholesale customers are generally adjusted on an annual basis for certain changes in rate base and actual operating expenses, including income taxes. As a result, these revenues would be subject to an automatic reduction for the effect of the TCJA corporate tax rate change through the annual true-up process, absent specific FERC action.

NSP-Minnesota and NSP-Wisconsin were parties to a February 2018 FERC filing by certain transmission owner (TO) members of the Midcontinent Independent System Operator, Inc. (MISO) proposing to commence early reductions to transmission formula rates in 2018 for the corporate tax rate impacts of the TCJA. Also in February 2018, PSCo made a filing with FERC similarly requesting early reductions in its transmission and production formula rates in 2018 for corporate tax rate impacts of the TCJA. In March 2018, the FERC issued orders granting MISO TOs and PSCo’s waiver requests so that 2018 rates will reflect the lower federal corporate tax rate. For SPS, as a portion of the TCJA tax rate change largely offsets a depreciation rate change that was effective Jan. 1, 2018 in its wholesale production rates, SPS has notified FERC that it will continue to charge production rates established in 2017, subject to refund. SPS’ wholesale transmission rates continue to be calculated at the pre-TCJA corporate tax rate, subject to true-up in 2019.

NSP-Minnesota

Pending Regulatory Proceedings — MPUC

GUIC Rider — In February 2018, the MPUC approved a 2017 revenue requirement of approximately $20 million for GUIC investments. New rates went into effect in March 2018. In November 2017, NSP-Minnesota filed the 2018 GUIC rider with the MPUC requesting recovery of approximately $28 million from Minnesota gas utility customers. In March 2018, NSP-Minnesota filed a supplement to the 2018 GUIC rider filing to provide an updated capital forecast and address the impact of the TCJA. The net result decreased NSP-Minnesota’s 2018 GUIC revenue requirement to approximately $24 million. The MPUC is currently considering the 2018 petition.

Renewable Energy Standard (RES) Rider — In 2017, NSP-Minnesota filed the 2017 and 2018 RES rider petition with the MPUC, requesting approval of a 2017 over-recovery of approximately $10 million and a 2018 revenue requirement of approximately $11 million. The petition was based on a requested return on equity (ROE) of 10.0 percent and includes costs associated with the Courtenay wind farm and the 1,550 megawatt (MW) wind portfolio, which are offset by production tax credits (PTCs) and proceeds from renewable energy credit (REC) sales. The increase in revenue requirements in 2018 is due to new wind projects entering the construction phase. In February and March 2018, NSP-Minnesota filed supplements to the 2017 and 2018 RES rider petition to provide updated actual results and address TCJA impacts. NSP-Minnesota’s revised 2017 refund is approximately $13 million, and the revised 2018 revenue requirement is approximately $23 million. The increase in 2018 revenue requirements from the original request is primarily driven by the TCJA impact on PTCs earned on existing wind asset-related costs. A decision from the MPUC is expected later in 2018.

PSCo

Pending Regulatory Proceedings — CPUC

Colorado 2017 Multi-Year Electric Rate Case — In October 2017, PSCo filed a multi-year request with the CPUC seeking to increase electric rates approximately $245 million over four years. The request was based on forecast test years (FTY), a 10.0 percent ROE and an equity ratio of 55.25 percent. Interim rates, subject to refund and interest, were to be effective on June 1, 2018.
Revenue Request (Millions of Dollars)

2018

2019

2020

2021

Total
Revenue request

$
74

$
75

$
60

$
36

$
245

Clean Air Clean Jobs Act (CACJA) rider conversion to base rates

90

—

—

—

90

Transmission Cost Adjustment (TCA) rider conversion to base rates

43

—

—

—

43

Total

$
207

$
75

$
60

$
36

$
378

Expected year-end rate base (billions of dollars)

$
6.8

$
7.1

$
7.3

$
7.4

In March 2018, PSCo, CPUC Staff and OCC reached a settlement and filed a motion with the CPUC requesting changes to the procedural schedule and scope of the electric case, which included delaying the implementation of provisional rates from June 2018 to January 2019 and requiring PSCo to file updated test year information for 2019-2021 which included the impacts of TCJA. In April 2018, the CPUC denied the motion on procedural grounds and dismissed the electric rate case. PSCo anticipates filing a new electric rate case in the summer of 2018 with new rates expected to be effective in the first quarter of 2019.

Colorado 2017 Multi-Year Natural Gas Rate Case — In June 2017, PSCo filed a multi-year request with the CPUC seeking to increase retail natural gas rates approximately $139 million over three years. The request, detailed below, is based on FTYs, a 10.0 percent ROE and an equity ratio of 55.25 percent.
Revenue Request (Millions of Dollars)

2018

2019

2020

Total
Revenue request

$
63

$
33

$
43

$
139

Pipeline System Integrity Adjustment (PSIA) rider conversion to base rates ^(a)

—

94

—

94

Total

$
63

$
127

$
43

$
233

Expected year-end rate base (billions of dollars) ^(b)

$
1.5

$
2.3

$
2.4

^(a)
The roll-in of PSIA rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. The recovery of incremental PSIA related investments in 2019 and 2020 are included in the base rate request.

^(b)
The additional rate base in 2019 predominantly reflects the roll-in of capital associated with the PSIA rider.

In October 2017, the CPUC Staff and the OCC recommended a single 2016 historic test year (HTY) based on an average 13-month rate base, and opposed a multi-year request. In addition, they recommended an equity ratio of 48.73 percent and 51.2 percent, respectively, and the existing PSIA rider expire with the 2018 rates rolled into base rates beginning Jan. 1, 2019. Planned investments in 2019 and 2020 would be recoverable through a future rate case. The Staff and OCC provide for a recommended 2018 rate increase of approximately $30 million and $39 million, respectively.

Provisional rates, subject to refund, of $63 million were implemented on Jan. 1, 2018.

On Jan. 31, 2018, the CPUC ordered deferred accounting for the impacts of TCJA and opened a statewide TCJA proceeding, as discussed below. In February 2018, the ALJ approved a settlement agreement between PSCo and the CPUC, which reduced provisional rates by $20 million to address the impacts of the TCJA. The CPUC is expected to rule on the regulatory treatment of the TCJA and the natural gas rate case later in 2018.

On April 20, 2018, PSCo filed for a PSIA extension through 2020 in the event that the CPUC does not adopt its multi-year plan proposal.

SPS

Pending Regulatory Proceedings — PUCT

Texas 2017 Electric Rate Case — In 2017, SPS filed a $55 million, or 5.8 percent, retail electric, non-fuel base rate increase case in Texas with each of its Texas municipalities and the PUCT. The request was based on a HTY ended June 30, 2017, a requested ROE of 10.25 percent, an electric rate base of approximately $1.9 billion and an equity ratio of 53.97 percent.

The following table summarizes SPS’ rate increase request:
Revenue Request (Millions of Dollars)

Incremental revenue request

$
69

Transmission Cost Recovery Factor (TCRF) rider conversion to base rates ^(a)

(14
)
Net revenue increase request

$
55

^(a)
The roll-in of the TCRF rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. SPS can request another TCRF rider after the conclusion of this rate case to recover transmission investments subsequent to June 30, 2017.

Key dates in the revised procedural schedule are as follows:

•
PUCT Staff direct testimony — May 2, 2018;
•
PUCT Staff and intervenors’ cross-rebuttal testimony — May 14, 2018;
•
SPS’ rebuttal testimony — May 23, 2018; and
•
Hearings — June 4 - 14, 2018.

As discussed above, the PUCT has opened a docket on the impact of the TCJA, which may have an impact on this rate case. In February 2018, SPS filed supplemental testimony with the PUCT, which indicated that TCJA would reduce revenue requirements by approximately $32 million and recommended increasing its equity ratio to 58 percent to offset the negative impact of the TCJA on its credit metrics and potentially its credit ratings. The final rates are expected to be effective retroactive to Jan. 23, 2018 through a customer surcharge. A PUCT decision is expected in the fourth quarter of 2018.

Appeal of the Texas 2015 Electric Rate Case Decision — In 2014, SPS had requested an overall retail electric revenue rate increase of $42 million. In 2015, the PUCT approved an overall rate decrease of approximately $4 million, net of rate case expenses. In April 2016, SPS filed an appeal with the Texas State District Court (District Court) challenging the PUCT’s order that had denied SPS’ request for rehearing on certain items in SPS’ Texas 2015 electric rate case related to capital structure, incentive compensation and wholesale load reductions. In 2017, the District Court denied SPS’ appeal, and SPS appealed the District Court’s decision to the Court of Appeals. A decision is pending.

Pending Regulatory Proceeding — NMPRC

New Mexico 2017 Electric Rate Case — In October 2017, SPS filed an electric rate case with the NMPRC seeking an increase in retail electric base rates of approximately $43 million. The request is based on a HTY ended June 30, 2017, a ROE of 10.25 percent, an equity ratio of 53.97 percent and a rate base of approximately $885 million, including rate base additions through Nov. 30, 2017. This rate case also takes into account the decline in sales of 380 MW in 2017 from certain wholesale customers and seeks to adjust the life of SPS’ Tolk power plant (Unit 1 from 2042 to 2032 and Unit 2 from 2045 to 2032).

In February 2018, SPS filed supplemental information, which indicated that the TCJA would reduce revenue requirements by approximately $11 million. In addition, SPS requested an increase in the equity ratio of 58 percent and an adjustment to regional transmission revenue for the impacts of TCJA.

On April 13, 2018, the NMPRC Staff, the New Mexico Attorney General (NMAG), and several other parties filed testimony. The recommended ROE’s ranged from 9.0 percent to of 9.21 percent, and the recommended equity ratios were 51.0 percent to 53.97 percent.

The following table summarizes certain parties’ recommendations from SPS’ request:
Millions of Dollars

NMPRC Staff Testimony

NMAG Testimony
SPS request

$
43

$
43

Reduction to request for the impact of the TCJA

(11
)

(11
)
SPS request, including the impact of the TCJA

32

32

ROE (9.0 percent and 9.21 percent, respectively)

(4
)

(6
)
Capital structure (52.0 percent and 53.97 percent, respectively)

(7
)

(3
)
Accelerated depreciation (Tolk plant)

(3
)

(3
)
Disallow rate case expenses

(2
)

(3
)
Regional transmission revenue (adjustment for the impact of the TCJA)

—

—

(3
)
Post test year plant (estimated numbers were updated to actual)

(1
)

(2
)
Other, net

(4
)

(5
)
Recommended rate increase

$
11

$
7

Key dates in the procedural schedule are as follows:

•
SPS’ rebuttal testimony — May 2, 2018; and
•
Hearings — May 15 - 25, 2018.

SPS anticipates a decision and implementation of final rates in the second half of 2018.

Appeal of the New Mexico 2016 Electric Rate Case Dismissal — In November 2016, SPS filed an electric rate case with the NMPRC seeking an increase in base rates of approximately $41 million, representing a total revenue increase of approximately 10.9 percent. The rate filing was based on a requested ROE of 10.1 percent, an equity ratio of 53.97 percent, an electric rate base of approximately $832 million and a future test year ending June 30, 2018. In 2017, the NMPRC dismissed SPS’ rate case. SPS filed a notice of appeal in the New Mexico Supreme Court. A decision is not expected until the second half of 2019.

Pending Regulatory Proceeding — FERC

MISO ROE Complaints — In November 2013, a group of customers filed a complaint at the FERC against MISO TOs, including NSP-Minnesota and NSP-Wisconsin. The complaint argued for a reduction in the ROE in transmission formula rates in the MISO region from 12.38 percent to 9.15 percent, and the removal of ROE adders (including those for Regional Transmission Organization (RTO) membership), effective Nov. 12, 2013.

In September 2016, the FERC approved an ALJ recommendation that MISO TOs be granted a 10.32 percent base ROE using the methodology adopted by FERC in June 2014 (Opinion 531). This ROE would be applicable for the 15-month refund period from Nov. 12, 2013 to Feb. 11, 2015, and prospectively from the date of the FERC order. The total prospective ROE would be 10.82 percent, including a 50 basis point adder for RTO membership. Various parties requested rehearing of the September 2016 order. The requests are pending FERC action.

In February 2015, a second complaint seeking to reduce the MISO ROE from 12.38 percent to 8.67 percent prior to any RTO adder was filed, resulting in a second period of potential refunds from Feb. 12, 2015 to May 11, 2016. In June 2016, an ALJ recommended a base ROE of 9.7 percent, applying the FERC Opinion 531 methodology. Various parties filed exceptions to the ALJ recommendation, and FERC action is pending. In April 2017, the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit) vacated and remanded Opinion 531. It is unclear how the D.C. Circuit’s opinion to vacate and remand Opinion 531 will affect the September 2016 FERC order or the timing and outcome of the second ROE complaint.

NSP-Minnesota has recognized a current refund liability consistent with the best estimate of the final ROE for the Feb. 12, 2015 to May 11, 2016 complaint period.

Southwest Power Pool, Inc. (SPP) Open Access Transmission Tariff (OATT) Upgrade Costs — Under the SPP OATT, costs of participant-funded, or “sponsored,” transmission upgrades may be recovered from other SPP customers whose transmission service depends on capacity enabled by the upgrade. The SPP OATT has allowed SPP to charge for these upgrades since 2008, but SPP had not been charging its customers for these upgrades. In 2016, the FERC granted SPP’s request to recover the charges not billed since 2008. SPP subsequently billed SPS approximately $13 million for these charges. SPP is also billing SPS ongoing charges of approximately $0.5 million per month. SPS is currently seeking recovery of these SPP charges in its pending Texas and New Mexico base rate cases.

In October 2017, SPS filed a complaint against SPP regarding the amounts billed asserting that SPP has assessed upgrade charges to SPS in violation of the SPP OATT. In March 2018, the FERC denied SPS’ complaint. SPS sought rehearing in April 2018, which is pending FERC action. If SPS’ complaint results in additional charges or refunds, SPS will seek to recover or refund the differential in future rate proceedings.

v3.8.0.1

Commitments and Contingencies
3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies
Commitments and Contingencies

Except to the extent noted below and in Note 5 above, the circumstances set forth in Notes 12, 13 and 14 to the consolidated financial statements included in Xcel Energy Inc.’s Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of commitments and contingent liabilities and are incorporated herein by reference. The following include commitments, contingencies and unresolved contingencies that are material to Xcel Energy’s financial position.

PPAs

Under certain PPAs, NSP-Minnesota, PSCo and SPS purchase power from independent power producing entities for which the utility subsidiaries are required to reimburse natural gas or biomass fuel costs, or to participate in tolling arrangements under which the utility subsidiaries procure the natural gas required to produce the energy that they purchase. These specific PPAs create a variable interest in the associated independent power producing entity.

The Xcel Energy utility subsidiaries had approximately 3,537 MW of capacity under long-term PPAs as of March 31, 2018 and Dec. 31, 2017, with entities that have been determined to be variable interest entities. Xcel Energy has concluded that these entities are not required to be consolidated in its consolidated financial statements because it does not have the power to direct the activities that most significantly impact the entities’ economic performance. These agreements have expiration dates through 2041.

Guarantees and Bond Indemnifications

Xcel Energy Inc. and its subsidiaries provide guarantees and bond indemnities under specified agreements or transactions. The guarantees and bond indemnities issued by Xcel Energy Inc. guarantee payment or performance by its subsidiaries. As a result, Xcel Energy Inc.’s exposure under the guarantees and bond indemnities is based upon the net liability of the relevant subsidiary under the specified agreements or transactions. Most of the guarantees and bond indemnities issued by Xcel Energy Inc. and its subsidiaries have a stated maximum guarantee or indemnity amount. As of March 31, 2018 and Dec. 31, 2017, Xcel Energy Inc. and its subsidiaries had no assets held as collateral related to their guarantees, bond indemnities and indemnification agreements.

The following table presents guarantees and bond indemnities issued and outstanding for Xcel Energy:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Guarantees issued and outstanding

$
18.6

$
18.8

Current exposure under these guarantees

—

—

Bonds with indemnity protection

51.7

53.1

Other Indemnification Agreements

Xcel Energy Inc. and its subsidiaries provide indemnifications through contracts entered into in the normal course of business. These are primarily indemnifications against adverse litigation outcomes in connection with underwriting agreements, as well as breaches of representations and warranties, including corporate existence, transaction authorization and income tax matters with respect to assets sold. Xcel Energy Inc.’s and its subsidiaries’ obligations under these agreements may be limited in terms of duration and amount. The maximum future payments under these indemnifications cannot be reasonably estimated as the dollar amounts are often not explicitly stated.

Environmental Contingencies

Ashland Manufactured Gas Plant (MGP) Site — NSP-Wisconsin was named a potentially responsible party (PRP) for contamination at a site in Ashland, Wis. The Site includes NSP-Wisconsin property, previously operated as a MGP facility (the Upper Bluff), and two other properties: an adjacent city lakeshore park area (Kreher Park); and an area of Lake Superior’s Chequamegon Bay adjoining the park.

In January 2017, NSP-Wisconsin agreed to remediate the Phase II Project Area (the Sediments), under a settlement agreement with the Environmental Protection Agency. The settlement agreements were approved by the U.S. District Court for the Western District of Wisconsin. NSP-Wisconsin initiated a full scale wet dredge remedy of the Sediments in 2017. Under the current plan, NSP-Wisconsin anticipates completion of restoration activities of the Sediments in 2018 with finalization of Phase I Project Area (which includes the Upper Bluff and Kreher Park areas of the Site) construction and restoration activities in early 2019 although April weather may challenge that schedule. Groundwater treatment activities at the Site will continue.

The current cost estimate for the remediation of the entire site (both Phase I Project Area and the Sediments) is approximately $172 million, of which approximately $139 million has been spent. As of March 31, 2018 and Dec. 31, 2017, NSP-Wisconsin had recorded a total liability of $33 million and $30 million, respectively, for the entire site.

NSP-Wisconsin has deferred the unrecovered portion of the estimated Site remediation costs as a regulatory asset. The PSCW has authorized NSP-Wisconsin rate recovery for all remediation costs incurred at the Site. In 2012, the PSCW agreed to allow NSP-Wisconsin to pre-collect certain costs, to amortize costs over a ten-year period and to apply a three percent carrying cost to the unamortized regulatory asset. In December 2017, the PSCW approved an NSP-Wisconsin natural gas rate case, which included recovery of additional expenses associated with remediating the Site. The annual recovery of MGP clean-up costs increased from $12 million in 2017 to $18 million in 2018.

Fargo, N.D. MGP Site — In May 2015, underground pipes, tars and impacted soils were discovered in a right-of-way in Fargo, N.D. that appeared to be associated with a former MGP operated by NSP-Minnesota or prior companies. NSP-Minnesota removed impacted soils and other materials and commenced an investigation of the historic MGP and adjacent properties (the Fargo MGP Site). The North Dakota Department of Health approved NSP-Minnesota’s proposed cleanup plan in January 2017, which involves targeted source removal of impacted soils and historic MGP infrastructure. It is anticipated that remediation activities will be performed in 2018. NSP-Minnesota has also initiated insurance recovery litigation in North Dakota. The U.S. District Court for the District of North Dakota agreed to the parties’ request for a stay of the litigation until May 31, 2018.

NSP-Minnesota had recorded an estimated liability of $15 million as of March 31, 2018 and $16 million as of Dec. 31, 2017, for the Fargo MGP Site. The current cost estimate for the remediation of the site is approximately $22 million, of which approximately $7 million has been spent. NSP-Minnesota has deferred Fargo MGP Site costs allocable to the North Dakota jurisdiction, or approximately 88 percent of all remediation costs, as approved by the North Dakota Public Service Commission (NDPSC). In December 2017, NSP-Minnesota filed a request with the MPUC to defer post-2017 MGP remediation expenditures allocable to the Minnesota jurisdiction, including the Fargo MGP site. In March 2018, the DOC recommended that the MPUC deny NSP-Minnesota’s deferral request. A MPUC decision is expected mid-2018.

Other MGP, Landfill or Disposal Sites — Xcel Energy is currently involved in investigating and/or remediating several MGP, landfill or other disposal sites. Xcel Energy has identified eleven sites across its service territories in addition to the sites in Ashland and Fargo, where contamination is present and where investigation and/or remediation activities are currently underway. Other parties may have responsibility for some portion of the investigation and/or remediation activities. Xcel Energy anticipates that these investigation or remediation activities will continue through at least 2018. Xcel Energy had accrued $4 million as of March 31, 2018 and Dec. 31, 2017 for all of these sites. There may be insurance recovery and/or recovery from other PRPs that will offset any costs incurred. Xcel Energy anticipates that any amounts spent will be fully recovered from customers.

Legal Contingencies

Xcel Energy is involved in various litigation matters that are being defended and handled in the ordinary course of business. The assessment of whether a loss is probable or is a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series of complex judgments about future events. Management maintains accruals for such losses that are probable of being incurred and subject to reasonable estimation. Management is sometimes unable to estimate an amount or range of a reasonably possible loss in certain situations, including but not limited to when (1) the damages sought are indeterminate, (2) the proceedings are in the early stages, or (3) the matters involve novel or unsettled legal theories. In such cases, there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss. For current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, arising from such current proceedings would have a material effect on Xcel Energy’s financial statements. Unless otherwise required by GAAP, legal fees are expensed as incurred.

Employment, Tort and Commercial Litigation

Gas Trading Litigation — e prime, inc. (e prime) is a wholly owned subsidiary of Xcel Energy. e prime was in the business of natural gas trading and marketing but has not engaged in natural gas trading or marketing activities since 2003. Thirteen lawsuits were commenced against e prime and Xcel Energy (and NSP-Wisconsin, in two instances) between 2003 and 2009 alleging fraud and anticompetitive activities in conspiring to restrain the trade of natural gas and manipulate natural gas prices.

e prime, Xcel Energy Inc. and its other affiliates were sued along with several other gas marketing companies. These cases were all consolidated in the U.S. District Court in Nevada. Six of the cases remain active, which includes a multi-district litigation (MDL) matter consisting of a Colorado class (Breckenridge), a Wisconsin class (Arandell Corp.), a Missouri class, a Kansas class, and two other cases identified as “Sinclair Oil” and “Farmland.” In March 2017, summary judgment was granted by the MDL judge in favor of Xcel Energy and e prime in the Sinclair Oil and Farmland cases. In November 2017, the U.S District Court in Nevada granted summary judgment against two plaintiffs in the Arandell Corp. case in favor of Xcel Energy and NSP-Wisconsin, leaving only three individual plaintiffs remaining in the litigation. In addition, the plaintiffs’ motions for class certification and remand back to originating courts in these cases were denied in March 2017. Plaintiffs have appealed the summary judgment motions granted in the Farmland and Sinclair Oil cases and the denial of class certification and remand to the U.S. Court of Appeals for the Ninth Circuit (Ninth Circuit). Oral arguments were heard before the Ninth Circuit in February 2018. In March 2018, the Ninth Circuit reversed and remanded the summary judgment in the Farmland case. The Farmland defendants subsequently filed a request for further review by the Ninth Circuit. In light of the decision in the Farmland case, the Sinclair plaintiffs have requested the Ninth Circuit to reverse the grant of summary judgment without hearing. Final rulings on all pending motions and appeals are expected by the end of 2018. Xcel Energy, NSP-Wisconsin and e prime have concluded that a loss is remote.

Line Extension Disputes — In December 2015, Development Recovery Company (DRC) filed a lawsuit in the Denver District Court, stating PSCo failed to award proper allowances and refunds for line extensions to new developments pursuant to the terms of electric and gas service agreements entered into by PSCo and various developers. The dispute involved claims by over fifty developers. In February 2018, the Colorado Supreme Court denied DRC’s petition to appeal the Denver District Court’s dismissal of the lawsuit, effectively terminating this litigation. However, in January 2018, DRC filed a new lawsuit in Boulder County District Court, asserting a single claim that PSCo was required to file its line extension agreements with the CPUC but failed to do so. This claim is substantially similar to the arguments previously raised by DRC. In February 2018, PSCo filed a motion to dismiss. Dates for this proceeding have not been scheduled.

PSCo has concluded that a loss is remote with respect to this matter as the service agreements were developed to implement CPUC approved tariffs and PSCo has complied with the tariff provisions. Also, if a loss were sustained, PSCo believes it would be allowed to recover these costs through traditional regulatory mechanisms. The amount or range in dispute is presently unknown and no accrual has been recorded for this matter.

v3.8.0.1

Borrowings and Other Financing Instruments
3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Borrowings and Other Financing Instruments
Borrowings and Other Financing Instruments

Short-Term Borrowings

Money Pool — Xcel Energy Inc. and its utility subsidiaries have established a money pool arrangement that allows for short-term investments in and borrowings between the utility subsidiaries. NSP-Wisconsin does not participate in the money pool. Xcel Energy Inc. may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy Inc. The money pool balances are eliminated in consolidation.

Short-Term Debt — Xcel Energy Inc. and its utility subsidiaries meet their short-term liquidity requirements primarily through the issuance of commercial paper and borrowings under their credit facilities and term loan agreements. Commercial paper and term loan borrowings outstanding for Xcel Energy were as follows:
(Amounts in Millions, Except Interest Rates)

Three Months Ended
March 31, 2018

Year Ended
Dec. 31, 2017
Borrowing limit

$
3,250

$
3,250

Amount outstanding at period end

1,025

814

Average amount outstanding

1,000

644

Maximum amount outstanding

1,197

1,247

Weighted average interest rate, computed on a daily basis

1.93
%

1.35
%
Weighted average interest rate at period end

2.34

1.90

Letters of Credit — Xcel Energy Inc. and its subsidiaries use letters of credit, generally with terms of one year, to provide financial guarantees for certain operating obligations. At March 31, 2018 and Dec. 31, 2017, there were $31 million and $30 million, respectively, of letters of credit outstanding under the credit facilities. The contract amounts of these letters of credit approximate their fair value and are subject to fees.

Credit Facilities — In order to use their commercial paper programs to fulfill short-term funding needs, Xcel Energy Inc. and its utility subsidiaries must have revolving credit facilities in place at least equal to the amount of their respective commercial paper borrowing limits and cannot issue commercial paper in an aggregate amount exceeding available capacity under these credit facilities. The lines of credit provide short-term financing in the form of notes payable to banks, letters of credit and back-up support for commercial paper borrowings.

As of March 31, 2018, Xcel Energy Inc. and its utility subsidiaries had the following committed credit facilities available:
(Millions of Dollars)

Credit Facility ^(a)

Drawn ^(b)

Available
Xcel Energy Inc.

$
1,500

$
898

$
602

PSCo

700

99

601

NSP-Minnesota

500

25

475

SPS

400

12

388

NSP-Wisconsin

150

22

128

Total

$
3,250

$
1,056

$
2,194

^(a)
These credit facilities expire in June 2021, with the exception of Xcel Energy Inc.’s $500 million 364-day term loan agreement entered into in December 2017.
^(b)
Includes outstanding commercial paper, term loan borrowings and letters of credit.

All credit facility bank borrowings, outstanding letters of credit, term loan borrowings and outstanding commercial paper reduce the available capacity under the respective credit facilities. Xcel Energy Inc. and its subsidiaries had no direct advances on the credit facilities outstanding as of March 31, 2018 and Dec. 31, 2017.

v3.8.0.1

Fair Value of Financial Assets and Liabilities
3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Assets and Liabilities
Fair Value of Financial Assets and Liabilities

Fair Value Measurements

The accounting guidance for fair value measurements and disclosures provides a single definition of fair value and requires certain disclosures about assets and liabilities measured at fair value. A hierarchical framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value is established by this guidance. The three levels in the hierarchy are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. The types of assets and liabilities included in Level 1 are highly liquid and actively traded instruments with quoted prices.

Level 2 — Pricing inputs are other than quoted prices in active markets, but are either directly or indirectly observable as of the reporting date. The types of assets and liabilities included in Level 2 are typically either comparable to actively traded securities or contracts, or priced with models using highly observable inputs.

Level 3 — Significant inputs to pricing have little or no observability as of the reporting date. The types of assets and liabilities included in Level 3 are those valued with models requiring significant management judgment or estimation.

Specific valuation methods include the following:

Cash equivalents — The fair values of cash equivalents are generally based on cost plus accrued interest; money market funds are measured using quoted net asset value (NAV).

Investments in equity securities and other funds — Equity securities are valued using quoted prices in active markets. The fair values for commingled funds are measured using NAVs, which take into consideration the value of underlying fund investments, as well as the other accrued assets and liabilities of a fund, in order to determine a per-share market value. The investments in commingled funds may be redeemed for NAV with proper notice. Proper notice varies by fund and can range from daily with one or two days notice to annually with 90 days notice. Private equity investments require approval of the fund for any unscheduled redemption, and such redemptions may be approved or denied by the fund at its sole discretion. Unscheduled distributions from real estate investments may be redeemed with proper notice, which is typically quarterly with 45-90 days notice; however, withdrawals from real estate investments may be delayed or discounted as a result of fund illiquidity.

Investments in debt securities — Fair values for debt securities are determined by a third party pricing service using recent trades and observable spreads from benchmark interest rates for similar securities.

Interest rate derivatives — The fair values of interest rate derivatives are based on broker quotes that utilize current market interest rate forecasts.

Commodity derivatives — The methods used to measure the fair value of commodity derivative forwards and options utilize forward prices and volatilities, as well as pricing adjustments for specific delivery locations, and are generally assigned a Level 2 classification. When contractual settlements extend to periods beyond those readily observable on active exchanges or quoted by brokers, the significance of the use of less observable forecasts of long-term forward prices and volatilities on a valuation is evaluated, and may result in Level 3 classification.

Electric commodity derivatives held by NSP-Minnesota and SPS include transmission congestion instruments, generally referred to as financial transmission rights (FTRs). FTRs purchased from a RTO are financial instruments that entitle or obligate the holder to monthly revenues or charges based on transmission congestion across a given transmission path. The value of an FTR is derived from, and designed to offset, the cost of transmission congestion. In addition to overall transmission load, congestion is also influenced by the operating schedules of power plants and the consumption of electricity pertinent to a given transmission path. Unplanned plant outages, scheduled plant maintenance, changes in the relative costs of fuels used in generation, weather and overall changes in demand for electricity can each impact the operating schedules of the power plants on the transmission grid and the value of an FTR. The valuation process for FTRs utilizes the cleared prices for each FTR for the most recent auction.

If forecasted costs of electric transmission congestion increase or decrease for a given FTR path, the value of that particular FTR instrument will likewise increase or decrease. Given the limited transparency in the auction process, fair value measurements for FTRs have been assigned a Level 3. Non-trading monthly FTR settlements are included in fuel and purchased energy cost recovery mechanisms as applicable in each jurisdiction, and therefore changes in the fair value of the yet to be settled portions of most FTRs are deferred as a regulatory asset or liability. Given this regulatory treatment and the limited magnitude of FTRs, the limited transparency associated with the valuation of FTRs are insignificant to the consolidated financial statements of Xcel Energy.

Non-Derivative Instruments Fair Value Measurements

Nuclear Decommissioning Fund

The Nuclear Regulatory Commission (NRC) requires NSP-Minnesota to maintain a portfolio of investments to fund the costs of decommissioning its nuclear generating plants. Together with all accumulated earnings or losses, the assets of the nuclear decommissioning fund are legally restricted for the decommissioning the Monticello and Prairie Island (PI) nuclear generating plants. The fund contains cash equivalents, debt securities, equity securities and other investments. NSP-Minnesota plans to reinvest matured securities until decommissioning begins. NSP-Minnesota uses the MPUC approved asset allocation for the escrow and investment targets by asset class for both the escrow and qualified trust.

NSP-Minnesota recognizes the costs of funding the decommissioning of its nuclear generating plants over the lives of the plants, assuming rate recovery of all costs. Given the purpose and legal restrictions on the use of nuclear decommissioning fund assets, realized and unrealized gains on fund investments over the life of the fund are deferred as an offset of NSP-Minnesota’s regulatory asset for nuclear decommissioning costs. Consequently, any realized and unrealized gains and losses on securities in the nuclear decommissioning fund, including any impairments, are deferred as a component of the regulatory asset for nuclear decommissioning.

Unrealized gains for the nuclear decommissioning fund were $543 million and $560 million as of March 31, 2018 and Dec. 31, 2017, respectively, and unrealized losses and amounts recorded as other-than-temporary impairments were $18 million and $7 million as of March 31, 2018 and Dec. 31, 2017, respectively.

The following tables present the cost and fair value of Xcel Energy’s non-derivative instruments with recurring fair value measurements in the nuclear decommissioning fund as of March 31, 2018 and Dec. 31, 2017:

March 31, 2018

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Investments Measured at NAV ^(b)

Total
Nuclear decommissioning fund ^(a)

Cash equivalents

$
41

$
41

$
—

$
—

$
—

$
41

Commingled funds:

Non U.S. equities

270

226

—

—

90

316

Emerging market debt funds

157

—

—

—

164

164

Private equity investments

142

—

—

—

198

198

Real estate

118

—

—

—

186

186

Other commingled funds

4

1

—

—

3

4

Debt securities:

Government securities

78

—

77

—

—

77

U.S. corporate bonds

325

—

321

—

—

321

Non U.S. corporate bonds

55

—

53

—

—

53

Equity securities:

U.S. equities

278

557

—

—

—

557

Non U.S. equities

153

229

—

—

—

229

Total

$
1,621

$
1,054

$
451

$
—

$
641

$
2,146

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $141 million of equity investments in unconsolidated subsidiaries and $117 million of rabbi trust assets and miscellaneous investments.
^(b)
Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.

Dec. 31, 2017

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Investments Measured at NAV ^(b)

Total
Nuclear decommissioning fund ^(a)

Cash equivalents

$
29

$
29

$
—

$
—

$
—

$
29

Commingled funds:

Non U.S. equities

264

217

—

—

90

307

Emerging market debt funds

156

—

—

—

166

166

Private equity investments

141

—

—

—

198

198

Real estate

131

—

—

—

202

202

Other commingled funds

9

6

—

—

3

9

Debt securities:

Government securities

68

—

69

—

—

69

U.S. corporate bonds

320

—

322

—

—

322

Non U.S. corporate bonds

50

—

50

—

—

50

Equity securities:

U.S. equities

271

557

—

—

—

557

Non U.S. equities

152

234

—

—

—

234

Total

$
1,591

$
1,043

$
441

$
—

$
659

$
2,143

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $140 million of equity investments in unconsolidated subsidiaries and $114 million of rabbi trust assets and miscellaneous investments.
^(b)
Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.
For the three months ended March 31, 2018 and 2017 there were no Level 3 nuclear decommissioning fund investments and no transfers of amounts between levels.

The following table summarizes the final contractual maturity dates of the debt securities in the nuclear decommissioning fund, by asset class, as of March 31, 2018:

Final Contractual Maturity
(Millions of Dollars)

Due in 1 Year
or Less

Due in 1 to 5
Years

Due in 5 to 10
Years

Due after 10
Years

Total
Government securities

$
—

$
9

$
2

$
66

$
77

U.S. corporate bonds

3

87

174

57

321

Non U.S. corporate bonds

—

16

33

4

53

Debt securities

$
3

$
112

$
209

$
127

$
451

Rabbi Trusts

In 2016, Xcel Energy established rabbi trusts to provide partial funding for future distributions of its supplemental executive retirement plan and deferred compensation plan. The following tables present the cost and fair value of the assets held in rabbi trusts as of March 31, 2018 and Dec. 31, 2017:

March 31, 2018

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Total
Rabbi Trusts ^(a)

Cash equivalents

$
11

$
11

$
—

$
—

$
11

Mutual funds

48

50

—

—

50

Total

$
59

$
61

$
—

$
—

$
61

Dec. 31, 2017

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Total
Rabbi Trusts ^(a)

Cash equivalents

$
12

$
12

$
—

$
—

$
12

Mutual funds

47

50

—

—

50

Total

$
59

$
62

$
—

$
—

$
62

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet.

Derivative Instruments Fair Value Measurements

Xcel Energy enters into derivative instruments, including forward contracts, futures, swaps and options, for trading purposes and to manage risk in connection with changes in interest rates, utility commodity prices and vehicle fuel prices.

Interest Rate Derivatives — Xcel Energy enters into various instruments that effectively fix the interest payments on certain floating rate debt obligations or effectively fix the yield or price on a specified benchmark interest rate for an anticipated debt issuance for a specific period. These derivative instruments are generally designated as cash flow hedges for accounting purposes.

As of March 31, 2018, accumulated other comprehensive losses related to interest rate derivatives included $3 million of net losses expected to be reclassified into earnings during the next 12 months as the related hedged interest rate transactions impact earnings, including forecasted amounts for unsettled hedges, as applicable.

Wholesale and Commodity Trading Risk — Xcel Energy Inc.’s utility subsidiaries conduct various wholesale and commodity trading activities, including the purchase and sale of electric capacity, energy, energy-related instruments and natural gas-related instruments, including derivatives. Xcel Energy’s risk management policy allows management to conduct these activities within guidelines and limitations as approved by its risk management committee, which is made up of management personnel not directly involved in the activities governed by this policy.

Commodity Derivatives — Xcel Energy enters into derivative instruments to manage variability of future cash flows from changes in commodity prices in its electric and natural gas operations, as well as for trading purposes. This could include the purchase or sale of energy or energy-related products, natural gas to generate electric energy, natural gas for resale, FTRs, vehicle fuel and weather derivatives.

As of March 31, 2018, Xcel Energy had various vehicle fuel contracts designated as cash flow hedges extending through December 2018. Xcel Energy enters into derivative instruments that mitigate commodity price risk on behalf of electric and natural gas customers, but may not be designated as qualifying hedging transactions. Changes in the fair value of non-trading commodity derivative instruments are recorded in other comprehensive income or deferred as a regulatory asset or liability. The classification as a regulatory asset or liability is based on commission approved regulatory recovery mechanisms. Xcel Energy recorded immaterial amounts to income related to the ineffectiveness of cash flow hedges for the three months ended March 31, 2018 and 2017.

As of March 31, 2018, net gains related to commodity derivative cash flow hedges recorded as a component of accumulated other comprehensive losses included immaterial net gains expected to be reclassified into earnings during the next 12 months as the hedged transactions occur.

Additionally, Xcel Energy enters into commodity derivative instruments for trading purposes not directly related to commodity price risks associated with serving its electric and natural gas customers. Changes in the fair value of these commodity derivatives are recorded in electric operating revenues, net of amounts credited to customers under margin-sharing mechanisms.

The following table details the gross notional amounts of commodity forwards, options and FTRs as of March 31, 2018 and Dec. 31, 2017:
(Amounts in Millions) ^(a)(b)

March 31, 2018

Dec. 31, 2017
Megawatt hours of electricity

60

68

Million British thermal units of natural gas

30

37

^(a)
Amounts are not reflective of net positions in the underlying commodities.
^(b)
Notional amounts for options are included on a gross basis, but are weighted for the probability of exercise.

The following tables detail the impact of derivative activity during the three months ended March 31, 2018 and 2017 on accumulated other comprehensive loss, regulatory assets and liabilities, and income:

Three Months Ended March 31, 2018

Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:

Pre-Tax Losses Reclassified into Income During the Period from:

Pre-Tax Gains (Losses) Recognized
During the Period in Income

(Millions of Dollars)

Accumulated Other
Comprehensive Loss

Regulatory
(Assets) and Liabilities

Accumulated Other
Comprehensive Loss

Regulatory
Assets and (Liabilities)

Other derivative instruments

Commodity trading

$
—

$
—

$
—

$
—

$
3

^(b)
Electric commodity

—

(4
)

—

3

^(c)
—

Natural gas commodity

—

1

—

2

^(d)
(2
)
^(d)
Total

$
—

$
(3
)

$
—

$
5

$
1

Three Months Ended March 31, 2017

Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:

Pre-Tax (Gains) Losses Reclassified into Income During the Period from:

Pre-Tax Gains (Losses) Recognized
During the Period in Income

(Millions of Dollars)

Accumulated Other
Comprehensive Loss

Regulatory
(Assets) and Liabilities

Accumulated Other
Comprehensive Loss

Regulatory
Assets and (Liabilities)

Derivatives designated as cash flow hedges

Interest rate

$
—

$
—

$
1

^(a)
$
—

$
—

Total

$
—

$
—

$
1

$
—

$
—

Other derivative instruments

Commodity trading

$
—

$
—

$
—

$
—

$
1

^(b)
Electric commodity

—

1

—

(4
)
^(c)
—

Natural gas commodity

—

(6
)

—

1

^(d)
(4
)
^(d)
Total

$
—

$
(5
)

$
—

$
(3
)

$
(3
)

^(a)
Amounts are recorded to interest charges.
^(b)
Amounts are recorded to electric operating revenues. Portions of these gains and losses are subject to sharing with electric customers through margin-sharing mechanisms and deducted from gross revenue, as appropriate.
^(c)
Amounts are recorded to electric fuel and purchased power. These derivative settlement gains and losses are shared with electric customers through fuel and purchased energy cost-recovery mechanisms, and reclassified out of income as regulatory assets or liabilities, as appropriate.
^(d)
Certain derivatives are utilized to mitigate natural gas price risk for electric generation and are recorded to electric fuel and purchased power, subject to cost-recovery mechanisms and reclassified to a regulatory asset, as appropriate. Amounts for the three months ended March 31, 2018 and 2017 included $1 million of settlement losses and $0.9 million of settlement gains, respectively. The remaining derivative settlement gains and losses for the three months ended March 31, 2018 and 2017 relate to natural gas operations and are recorded to cost of natural gas sold and transported. These gains and losses are subject to cost-recovery and reclassified out of income to a regulatory asset or liability, as appropriate.

Xcel Energy had no derivative instruments designated as fair value hedges during the three months ended March 31, 2018 and 2017. Therefore, no gains or losses from fair value hedges or related hedged transactions were recognized for these periods.

Consideration of Credit Risk and Concentrations — Xcel Energy continuously monitors the creditworthiness of the counterparties to its interest rate derivatives and commodity derivative contracts prior to settlement, and assesses each counterparty’s ability to perform on the transactions set forth in the contracts. Given this assessment, as well as an assessment of the impact of Xcel Energy’s own credit risk when determining the fair value of derivative liabilities, the impact of credit risk was immaterial to the fair value of unsettled commodity derivatives presented in the consolidated balance sheets.

Xcel Energy Inc. and its subsidiaries employ additional credit risk control mechanisms when appropriate, such as letters of credit, parental guarantees, standardized master netting agreements and termination provisions that allow for offsetting of positive and negative exposures. Credit exposure is monitored and, when necessary, the activity with a specific counterparty is limited until credit enhancement is provided.

Xcel Energy’s utility subsidiaries’ most significant concentrations of credit risk with particular entities or industries are contracts with counterparties to their wholesale, trading and non-trading commodity activities. As of March 31, 2018, five of Xcel Energy’s 10 most significant counterparties for these activities, comprising $70 million or 35 percent of this credit exposure, had investment grade credit ratings from Standard & Poor’s, Moody’s or Fitch Ratings. Four of the 10 most significant counterparties, comprising $27 million or 14 percent of this credit exposure, were not rated by these external agencies, but based on Xcel Energy’s internal analysis, had credit quality consistent with investment grade. The one remaining significant counterparty, comprising of $7 million or 4 percent of this credit exposure, had credit quality less than investment grade based on ratings from external analysis. Nine of these significant counterparties are municipal or cooperative electric entities or other utilities.

Credit Related Contingent Features — Contract provisions for derivative instruments that the utility subsidiaries enter, including those accounted for as normal purchase-normal sale contracts and therefore not reflected on the balance sheet, may require the posting of collateral or settlement of the contracts for various reasons, including if the applicable utility subsidiary’s credit ratings are downgraded below its investment grade credit rating by any of the major credit rating agencies or for cross-default contractual provisions that could result in the settlement of such contracts if there was a failure under other financing arrangements related to payment terms or other covenants. As of March 31, 2018 and Dec. 31, 2017, there were no derivative instruments in a material liability position with such underlying contract provisions.

Certain derivative instruments are also subject to contract provisions that contain adequate assurance clauses. These provisions allow counterparties to seek performance assurance, including cash collateral, in the event that a given utility subsidiary’s ability to fulfill its contractual obligations is reasonably expected to be impaired. Xcel Energy had no collateral posted related to adequate assurance clauses in derivative contracts as of March 31, 2018 and Dec. 31, 2017.

Recurring Fair Value Measurements — The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of March 31, 2018:

March 31, 2018

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative assets

Other derivative instruments:

Commodity trading

$
1

$
22

$
—

$
23

$
(12
)

$
11

Electric commodity

—

—

13

13

(2
)

11

Total current derivative assets

$
1

$
22

$
13

$
36

$
(14
)

22

PPAs ^(a)

6

Current derivative instruments

$
28

Noncurrent derivative assets

Other derivative instruments:

Commodity trading

$
1

$
37

$
8

$
46

$
(15
)

$
31

Total noncurrent derivative assets

$
1

$
37

$
8

$
46

$
(15
)

31

PPAs ^(a)

18

Noncurrent derivative instruments

$
49

March 31, 2018

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative liabilities

Other derivative instruments:

Commodity trading

$
1

$
19

$
—

$
20

$
(13
)

$
7

Electric commodity

—

—

2

2

(1
)

1

Total current derivative liabilities

$
1

$
19

$
2

$
22

$
(14
)

8

PPAs ^(a)

22

Current derivative instruments

$
30

Noncurrent derivative liabilities

Other derivative instruments:

Commodity trading

$
2

$
30

$
—

$
32

$
(19
)

$
13

Total noncurrent derivative liabilities

$
2

$
30

$
—

$
32

$
(19
)

13

PPAs ^(a)

107

Noncurrent derivative instruments

$
120

^(a)
During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
^(b)
Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at March 31, 2018. At March 31, 2018, derivative assets and liabilities include no obligations to return cash collateral and the rights to reclaim cash collateral of $4 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of Dec. 31, 2017:

Dec. 31, 2017

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative assets

Other derivative instruments:

Commodity trading

$
2

$
22

$
—

$
24

$
(15
)

$
9

Electric commodity

—

—

32

32

(2
)

30

Total current derivative assets
$
2

$
22

$
32

$
56

$
(17
)

39

PPAs ^(a)

5

Current derivative instruments

$
44

Noncurrent derivative assets

Other derivative instruments:

Commodity trading

$
—

$
31

$
5

$
36

$
(7
)

$
29

Total noncurrent derivative assets
$
—

$
31

$
5

$
36

$
(7
)

29

PPAs ^(a)

19

Noncurrent derivative instruments

$
48

Dec. 31, 2017

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative liabilities

Other derivative instruments:

Commodity trading

$
2

$
18

$
—

$
20

$
(15
)

$
5

Electric commodity

—

—

2

2

(2
)

—

Natural gas commodity

—

1

—

1

—

1

Total current derivative liabilities

$
2

$
19

$
2

$
23

$
(17
)

6

PPAs ^(a)

23

Current derivative instruments

$
29

Noncurrent derivative liabilities

Other derivative instruments:

Commodity trading

$
—

$
24

$
—

$
24

$
(10
)

$
14

Total noncurrent derivative liabilities

$
—

$
24

$
—

$
24

$
(10
)

14

PPAs ^(a)

112

Noncurrent derivative instruments

$
126

^(a)
During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
^(b)
Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at Dec. 31, 2017. At Dec. 31, 2017, derivative assets and liabilities include no obligations to return cash collateral and rights to reclaim cash collateral of $3 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

The following table presents the changes in Level 3 commodity derivatives for the three months ended March 31, 2018 and 2017:

Three Months Ended March 31
(Millions of Dollars)

2018

2017
Balance at Jan. 1

$
35

$
17

Purchases

1

4

Settlements

(12
)

(20
)
Net transactions recorded during the period:

Gains recognized in earnings ^(a)

2

—

Net (losses) gains recognized as regulatory assets and liabilities

(7
)

5

Balance at March 31

$
19

$
6

^(a)
These amounts relate to commodity derivatives held at the end of the period.

Xcel Energy recognizes transfers between levels as of the beginning of each period. There were no transfers of amounts between levels for derivative instruments for the three months ended March 31, 2018 and 2017.

Fair Value of Long-Term Debt

As of March 31, 2018 and Dec. 31, 2017, other financial instruments for which the carrying amount did not equal fair value were as follows:

March 31, 2018

Dec. 31, 2017
(Millions of Dollars)

Carrying Amount

Fair Value

Carrying Amount

Fair Value
Long-term debt, including current portion

$
14,979

$
15,877

$
14,976

$
16,531

The fair value of Xcel Energy’s long-term debt is estimated based on recent trades and observable spreads from benchmark interest rates for similar securities. The fair value estimates are based on information available to management as of March 31, 2018 and Dec. 31, 2017, and given the observability of the inputs to these estimates, the fair values presented for long-term debt have been assigned a Level 2.

v3.8.0.1

Other Income, Net
3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Other Income, Net
Other Income, Net

Other income, net consisted of the following:

Three Months Ended March 31
(Millions of Dollars)

2018

2017
Interest income

$
5

$
4

Other nonoperating income

1

4

Benefits non-service cost

(5
)

(6
)
Insurance policy expense

—

(1
)
Other income, net

$
1

$
1

v3.8.0.1

Segment Information
3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information
Segment Information

The regulated electric utility operating results of NSP-Minnesota, NSP-Wisconsin, PSCo and SPS, as well as the regulated natural gas utility operating results of NSP-Minnesota, NSP-Wisconsin and PSCo are each separately and regularly reviewed by Xcel Energy’s chief operating decision maker. Xcel Energy evaluates performance by each utility subsidiary based on profit or loss generated from the product or service provided. These segments are managed separately because the revenue streams are dependent upon regulated rate recovery, which is separately determined for each segment.

Xcel Energy has the following reportable segments: regulated electric utility, regulated natural gas utility and all other.

•
Xcel Energy’s regulated electric utility segment generates, transmits and distributes electricity primarily in portions of Minnesota, Wisconsin, Michigan, North Dakota, South Dakota, Colorado, Texas and New Mexico. In addition, this segment includes sales for resale and provides wholesale transmission service to various entities in the United States. Regulated electric utility also includes commodity trading operations.
•
Xcel Energy’s regulated natural gas utility segment transports, stores and distributes natural gas primarily in portions of Minnesota, Wisconsin, North Dakota, Michigan and Colorado.
•
Revenues from operating segments not included above are below the necessary quantitative thresholds and are therefore included in the all other category. Those primarily include steam revenue, appliance repair services, nonutility real estate activities, revenues associated with processing solid waste into refuse-derived fuel and investments in rental housing projects that qualify for low-income housing tax credits.

Xcel Energy had equity investments in unconsolidated subsidiaries of $141 million and $140 million as of March 31, 2018 and Dec. 31, 2017, respectively, included in the regulated natural gas utility segment.

Asset and capital expenditure information is not provided for Xcel Energy’s reportable segments because as an integrated electric and natural gas utility, Xcel Energy operates significant assets that are not dedicated to a specific business segment, and reporting assets and capital expenditures by business segment would require arbitrary and potentially misleading allocations which may not necessarily reflect the assets that would be required for the operation of the business segments on a stand-alone basis.

To report income from operations for regulated electric and regulated natural gas utility segments, the majority of costs are directly assigned to each segment. However, some costs, such as common depreciation, common operating and maintenance (O&M) expenses and interest expense are allocated based on cost causation allocators. A general allocator is used for certain general and administrative expenses, including office supplies, rent, property insurance and general advertising.
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Reconciling Eliminations

Consolidated Total
Three Months Ended March 31, 2018

Operating revenues from external customers

$
2,270

$
662

$
19

$
—

$
2,951

Intersegment revenues

—

—

—

—

—

Total revenues

$
2,270

$
662

$
19

$
—

$
2,951

Net income (loss)

$
219

$
95

$
(22
)

$
(1
)

$
291

(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Reconciling Eliminations

Consolidated Total
Three Months Ended March 31, 2017

Operating revenues from external customers

$
2,299

$
626

$
21

$
—

$
2,946

Intersegment revenues

—

—

—

—

—

Total revenues

$
2,299

$
626

$
21

$
—

$
2,946

Net income (loss)

$
194

$
63

$
(18
)

$
—

$
239

v3.8.0.1

Earnings Per Share
3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share
Earnings Per Share

Basic earnings per share (EPS) was computed by dividing the earnings available to Xcel Energy Inc.’s common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS was computed by dividing the earnings available to Xcel Energy Inc.’s common shareholders by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock (i.e., common stock equivalents) were settled. The weighted average number of potentially dilutive shares outstanding used to calculate Xcel Energy Inc.’s diluted EPS is calculated using the treasury stock method.

Common Stock Equivalents — Xcel Energy Inc. currently has common stock equivalents related to certain equity awards in share-based compensation arrangements. Common stock equivalents causing a dilutive impact to EPS include commitments to issue common stock related to time based equity compensation awards.

Stock equivalent units granted to Xcel Energy Inc.’s Board of Directors are included in common shares outstanding upon grant date as there is no further service, performance or market condition associated with these awards. Restricted stock, granted to settle amounts due to certain employees under the Xcel Energy Inc. Executive Annual Incentive Award Plan, is included in common shares outstanding when granted.

Share-based compensation arrangements for which there is currently no dilutive impact to EPS include the following:

•
Equity awards subject to a performance condition; included in common shares outstanding when all necessary conditions for settlement have been satisfied by the end of the reporting period.
•
Liability awards subject to a performance condition; any portions settled in shares are included in common shares outstanding upon settlement.

The dilutive impact of common stock equivalents affecting EPS was as follows:

Three Months Ended March 31, 2018

Three Months Ended March 31, 2017
(Amounts in millions, except per share data)

Income

Shares

Per Share
Amount

Income

Shares

Per Share
Amount
Net income

$
291

—

—

$
239

—

—

Basic EPS:

Earnings available to common shareholders

291

509.0

$
0.57

239

508.3

$
0.47

Effect of dilutive securities:

Equity awards

—

0.5

—

—

0.5

—

Diluted EPS:

Earnings available to common shareholders

$
291

509.5

$
0.57

$
239

508.8

$
0.47

v3.8.0.1

Benefit Plans and Other Postretirement Benefits
3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Benefit Plans and Other Postretirement Benefits
Benefit Plans and Other Postretirement Benefits

Components of Net Periodic Benefit Cost (Credit)

Three Months Ended March 31

2018

2017

2018

2017
(Millions of Dollars)

Pension Benefits

Postretirement Health
Care Benefits
Service cost

$
24

$
24

$
1

$
1

Interest cost ^(a)

33

36

5

6

Expected return on plan assets ^(a)

(52
)

(52
)

(6
)

(6
)
Amortization of prior service credit ^(a)

(1
)

—

(3
)

(3
)
Amortization of net loss ^(a)

27

26

2

1

Net periodic benefit cost (credit)

31

34

(1
)

(1
)
Costs not recognized due to the effects of regulation

—

(4
)

—

—

Net benefit cost (credit) recognized for financial reporting

$
31

$
30

$
(1
)

$
(1
)

^(a)
The components of net periodic cost other than the service cost component are included in the line item “other income, net” in the income statement or capitalized on the balance sheet as a regulatory asset.

In January 2018, contributions of $150 million were made across four of Xcel Energy’s pension plans. Xcel Energy does not expect additional pension contributions during 2018.

v3.8.0.1

Other Comprehensive Income
3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Other Comprehensive Income
Other Comprehensive Loss

Changes in accumulated other comprehensive loss, net of tax, for the three months ended March 31, 2018 and 2017 were as follows:

Three Months Ended March 31, 2018
(Millions of Dollars)

Gains and Losses
on Cash Flow Hedges

Defined Benefit Pension and
Postretirement Items

Total
Accumulated other comprehensive loss at Jan. 1

$
(58
)

$
(67
)

$
(125
)
Losses reclassified from net accumulated other comprehensive loss

—

1

1

Net current period other comprehensive income

—

1

1

Accumulated other comprehensive loss at March 31

$
(58
)

$
(66
)

$
(124
)

Three Months Ended March 31, 2017
(Millions of Dollars)

Gains and Losses
on Cash Flow Hedges

Defined Benefit Pension and
Postretirement Items

Total
Accumulated other comprehensive loss at Jan. 1

$
(51
)

$
(59
)

$
(110
)
Losses reclassified from net accumulated other comprehensive loss

1

1

2

Net current period other comprehensive income

1

1

2

Accumulated other comprehensive loss at March 31

$
(50
)

$
(58
)

$
(108
)

Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2018 and 2017 were as follows:
(Millions of Dollars)

Amounts Reclassified from Accumulated
Other Comprehensive Loss

Three Months Ended March 31, 2018

Three Months Ended March 31, 2017

Losses on cash flow hedges:

Interest rate derivatives

$
—

^(a)
$
1

^(a)
Total, net of tax

—

1

Defined benefit pension and postretirement losses:

Amortization of net loss

1

^(b)
2

^(b)
Total, pre-tax

1

2

Tax benefit

—

(1
)

Total, net of tax

1

1

Total amounts reclassified, net of tax

$
1

$
2

^(a)
Included in interest charges
^(b)
Included in the computation of net periodic pension and postretirement benefit costs. See Note 12 for details regarding these benefit plans.

v3.8.0.1

Revenues
3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenues
Revenues

Xcel Energy principally generates revenue from the transmission, distribution and sale of electricity and the transportation, distribution and sale of natural gas to wholesale and retail customers. Performance obligations related to the sale of energy are satisfied as energy is delivered to customers. Xcel Energy recognizes revenue in an amount that corresponds directly to the price of the energy delivered to the customer. The measurement of energy sales to customers is generally based on the reading of their meters, which occurs on a systematic basis throughout the month. At the end of each month, amounts of energy delivered to customers since the date of the last meter reading are estimated, and the corresponding unbilled revenue is recognized. Contract terms are generally short-term in nature, and as such Xcel Energy does not recognize a separate financing component of its collections from customers. Xcel Energy presents its revenues net of any excise or other fiduciary-type taxes or fees.

NSP-Minnesota participates in MISO, and SPS participates in SPP. Xcel Energy’s utility subsidiaries recognize sales to both native load and other end use customers on a gross basis in electric revenue and cost of sales. Revenues and charges for short term wholesale sales of excess energy transacted through RTOs are also recorded on a gross basis. Other revenues and charges related to participating and transacting in RTOs are recorded on a net basis in cost of sales.

Xcel Energy Inc.’s utility subsidiaries have various rate-adjustment mechanisms in place that provide for the recovery of natural gas, electric fuel and purchased energy costs. These cost-adjustment tariffs may increase or decrease the level of revenue collected from customers and are revised periodically for differences between the total amount collected under the clauses and the costs incurred. When applicable, under governing regulatory commission rate orders, fuel cost over-recoveries (the excess of fuel revenue billed to customers over fuel costs incurred) are deferred as regulatory liabilities and under-recoveries (the excess of fuel costs incurred over fuel revenues billed to customers) are deferred as regulatory assets.

Certain rate rider mechanisms qualify as alternative revenue programs under GAAP. These mechanisms arise from costs imposed upon the utility by action of a regulator or legislative body related to an environmental, public safety or other mandate. When certain criteria are met (including collection within 24 months), revenue is recognized equal to the revenue requirement, which may include return on rate base items and incentives. The mechanisms are revised periodically for differences between the total amount collected and the revenue recognized, which may increase or decrease the level of revenue collected from customers. Alternative revenue is recorded on a gross basis and is disclosed separate from revenue from contracts with customers in the period earned.

In the following tables, revenue is classified by the type of goods/services rendered and market/customer type. The tables also reconcile revenue to the reportable segments.

Three Months Ended March 31, 2018
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Total
Major revenue types

Revenue from contracts with customers:

Residential

$
687

$
390

$
9

$
1,086

Commercial and industrial (C&I)

1,112

207

7

1,326

Other

33

—

1

34

Total retail

1,832

597

17

2,446

Wholesale

188

—

—

188

Transmission

123

—

—

123

Other

39

28

—

67

Total revenue from contracts with customers

2,182

625

17

2,824

Alternative revenue and other

88

37

2

127

Total revenues

$
2,270

$
662

$
19

$
2,951

Three Months Ended March 31, 2017
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Total
Major revenue types

Revenue from contracts with customers:

Residential

$
685

$
374

$
8

$
1,067

C&I

1,148

195

9

1,352

Other

32

—

1

33

Total retail

1,865

569

18

2,452

Wholesale

181

—

—

181

Transmission

121

—

—

121

Other

25

25

—

50

Total revenue from contracts with customers

2,192

594

18

2,804

Alternative revenue and other

107

32

3

142

Total revenues

$
2,299

$
626

$
21

$
2,946

v3.8.0.1

Selected Balance Sheet Data (Tables)
3 Months Ended

Mar. 31, 2018

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Accounts receivable, net

Accounts receivable

$
921

$
849

Less allowance for bad debts

(53
)

(52
)

$
868

$
797

Inventories
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Inventories

Materials and supplies

$
311

$
311

Fuel

144

186

Natural gas

37

113

$
492

$
610

Property, Plant and Equipment, Net
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Property, plant and equipment, net

Electric plant

$
39,348

$
39,016

Natural gas plant

5,855

5,800

Common and other property

2,027

2,013

Plant to be retired ^(a)

11

11

Construction work in progress

2,339

2,087

Total property, plant and equipment

49,580

48,927

Less accumulated depreciation

(15,276
)

(15,000
)
Nuclear fuel

2,701

2,697

Less accumulated amortization

(2,326
)

(2,295
)

$
34,679

$
34,329

^(a)
In the third quarter of 2017, PSCo early retired Valmont Unit 5 and converted Cherokee Unit 4 from a coal-fueled generating facility to natural gas. PSCo also expects Craig Unit 1 to be early retired in approximately 2025. Amounts are presented net of accumulated depreciation.

v3.8.0.1

Income Taxes (Tables)
3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Total income tax expense from operations differs from the amount computed by applying the statutory federal income tax rate to income before income tax expense. The following reconciles such differences:

Three Months Ended March 31

2018

2017
Federal statutory rate

21.0
%

35.0
%
State tax, net of federal tax effect

4.9
%

4.0
%
Increases (decreases) in tax from:

Wind production tax credits
(6.0
)

(4.0
)
Regulatory differences - ARAM^(a)
(5.8
)

(0.1
)
Regulatory differences - ARAM deferral ^(b)
5.4

—

Regulatory differences - other utility plant items
(1.0
)

(0.5
)
Other, net
(1.6
)

(1.5
)
Effective income tax rate

16.9
%

32.9
%

^(a)
The average rate assumption method (ARAM); a method to flow back excess deferred taxes to customers.
^(b)
As we receive direction from our regulatory commissions regarding the return of excess deferred taxes (to our customers resulting from the TCJA), the ARAM deferral may decrease during the year, which would result in a reduction to tax expense with a corresponding reduction to revenue.

Summary of Statute of Limitations Applicable to Open Tax Years [Table Text Block]
Xcel Energy files a consolidated federal income tax return. The statute of limitations applicable to Xcel Energy’s federal income tax returns expire as follows:
Tax Year(s)

Expiration
2009 - 2011

December 2018
2012 - 2013

October 2018
2014

September 2018
2015

September 2019
2016

September 2020

Earliest Open Tax Years Subject to Examination by State Taxing Authorities in the Major Operating Jurisdictions
State Audits — Xcel Energy files consolidated state tax returns based on income in its major operating jurisdictions of Colorado, Minnesota, Texas, and Wisconsin, and various other state income-based tax returns. As of March 31, 2018, Xcel Energy’s earliest open tax years that are subject to examination by state taxing authorities in its major operating jurisdictions were as follows:
State

Year
Colorado

2009
Minnesota

2009
Texas

2009
Wisconsin

2012

Reconciliation of Unrecognized Tax Benefits
A reconciliation of the amount of unrecognized tax benefit is as follows:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Unrecognized tax benefit — Permanent tax positions

$
21

$
20

Unrecognized tax benefit — Temporary tax positions

19

19

Total unrecognized tax benefit

$
40

$
39

Tax Benefits Associated with NOL and Tax Credit Carryforwards
The unrecognized tax benefit amounts were reduced by the tax benefits associated with NOL and tax credit carryforwards. The amounts of tax benefits associated with NOL and tax credit carryforwards are as follows:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
NOL and tax credit carryforwards

$
(32
)

$
(31
)

Interest Payable related to Unrecognized Tax Benefits [Table Text Block]
The payable for interest related to unrecognized tax benefits is partially offset by the interest benefit associated with NOL and tax credit carryforwards. The payables for interest related to unrecognized tax benefits at March 31, 2018 and Dec. 31, 2017 were not material. No amounts were accrued for penalties related to unrecognized tax benefits as of March 31, 2018 or Dec. 31, 2017.

v3.8.0.1

Rate Matters (Tables)
3 Months Ended

Mar. 31, 2018

Public Utilities, General Disclosures [Abstract]

Colorado 2017 Multi-Year Electric Rate Case
Revenue Request (Millions of Dollars)

2018

2019

2020

2021

Total
Revenue request

$
74

$
75

$
60

$
36

$
245

Clean Air Clean Jobs Act (CACJA) rider conversion to base rates

90

—

—

—

90

Transmission Cost Adjustment (TCA) rider conversion to base rates

43

—

—

—

43

Total

$
207

$
75

$
60

$
36

$
378

Expected year-end rate base (billions of dollars)

$
6.8

$
7.1

$
7.3

$
7.4

Colorado 2017 Multi-Year Gas Rate Case
The request, detailed below, is based on FTYs, a 10.0 percent ROE and an equity ratio of 55.25 percent.
Revenue Request (Millions of Dollars)

2018

2019

2020

Total
Revenue request

$
63

$
33

$
43

$
139

Pipeline System Integrity Adjustment (PSIA) rider conversion to base rates ^(a)

—

94

—

94

Total

$
63

$
127

$
43

$
233

Expected year-end rate base (billions of dollars) ^(b)

$
1.5

$
2.3

$
2.4

^(a)
The roll-in of PSIA rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. The recovery of incremental PSIA related investments in 2019 and 2020 are included in the base rate request.

^(b)
The additional rate base in 2019 predominantly reflects the roll-in of capital associated with the PSIA rider.

Texas 2017 Rate Case
The following table summarizes SPS’ rate increase request:
Revenue Request (Millions of Dollars)

Incremental revenue request

$
69

Transmission Cost Recovery Factor (TCRF) rider conversion to base rates ^(a)

(14
)
Net revenue increase request

$
55

^(a)
The roll-in of the TCRF rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. SPS can request another TCRF rider after the conclusion of this rate case to recover transmission investments subsequent to June 30, 2017.

New Mexico 2017 Electric Rate Case
The following table summarizes certain parties’ recommendations from SPS’ request:
Millions of Dollars

NMPRC Staff Testimony

NMAG Testimony
SPS request

$
43

$
43

Reduction to request for the impact of the TCJA

(11
)

(11
)
SPS request, including the impact of the TCJA

32

32

ROE (9.0 percent and 9.21 percent, respectively)

(4
)

(6
)
Capital structure (52.0 percent and 53.97 percent, respectively)

(7
)

(3
)
Accelerated depreciation (Tolk plant)

(3
)

(3
)
Disallow rate case expenses

(2
)

(3
)
Regional transmission revenue (adjustment for the impact of the TCJA)

—

—

(3
)
Post test year plant (estimated numbers were updated to actual)

(1
)

(2
)
Other, net

(4
)

(5
)
Recommended rate increase

$
11

$
7

v3.8.0.1

Commitments and Contingencies (Tables)
3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Guarantees and Bond Indemnities Issued and Outstanding
The following table presents guarantees and bond indemnities issued and outstanding for Xcel Energy:
(Millions of Dollars)

March 31, 2018

Dec. 31, 2017
Guarantees issued and outstanding

$
18.6

$
18.8

Current exposure under these guarantees

—

—

Bonds with indemnity protection

51.7

53.1

v3.8.0.1

Borrowings and Other Financing Instruments (Tables)
3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Commercial Paper
Commercial paper and term loan borrowings outstanding for Xcel Energy were as follows:
(Amounts in Millions, Except Interest Rates)

Three Months Ended
March 31, 2018

Year Ended
Dec. 31, 2017
Borrowing limit

$
3,250

$
3,250

Amount outstanding at period end

1,025

814

Average amount outstanding

1,000

644

Maximum amount outstanding

1,197

1,247

Weighted average interest rate, computed on a daily basis

1.93
%

1.35
%
Weighted average interest rate at period end

2.34

1.90

Credit Facilities
As of March 31, 2018, Xcel Energy Inc. and its utility subsidiaries had the following committed credit facilities available:
(Millions of Dollars)

Credit Facility ^(a)

Drawn ^(b)

Available
Xcel Energy Inc.

$
1,500

$
898

$
602

PSCo

700

99

601

NSP-Minnesota

500

25

475

SPS

400

12

388

NSP-Wisconsin

150

22

128

Total

$
3,250

$
1,056

$
2,194

^(a)
These credit facilities expire in June 2021, with the exception of Xcel Energy Inc.’s $500 million 364-day term loan agreement entered into in December 2017.
^(b)
Includes outstanding commercial paper, term loan borrowings and letters of credit.

v3.8.0.1

Fair Value of Financial Assets and Liabilities (Tables)
3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Cost and Fair Value of Nuclear Decommissioning Fund Investments
The following tables present the cost and fair value of Xcel Energy’s non-derivative instruments with recurring fair value measurements in the nuclear decommissioning fund as of March 31, 2018 and Dec. 31, 2017:

March 31, 2018

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Investments Measured at NAV ^(b)

Total
Nuclear decommissioning fund ^(a)

Cash equivalents

$
41

$
41

$
—

$
—

$
—

$
41

Commingled funds:

Non U.S. equities

270

226

—

—

90

316

Emerging market debt funds

157

—

—

—

164

164

Private equity investments

142

—

—

—

198

198

Real estate

118

—

—

—

186

186

Other commingled funds

4

1

—

—

3

4

Debt securities:

Government securities

78

—

77

—

—

77

U.S. corporate bonds

325

—

321

—

—

321

Non U.S. corporate bonds

55

—

53

—

—

53

Equity securities:

U.S. equities

278

557

—

—

—

557

Non U.S. equities

153

229

—

—

—

229

Total

$
1,621

$
1,054

$
451

$
—

$
641

$
2,146

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $141 million of equity investments in unconsolidated subsidiaries and $117 million of rabbi trust assets and miscellaneous investments.
^(b)
Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.

Dec. 31, 2017

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Investments Measured at NAV ^(b)

Total
Nuclear decommissioning fund ^(a)

Cash equivalents

$
29

$
29

$
—

$
—

$
—

$
29

Commingled funds:

Non U.S. equities

264

217

—

—

90

307

Emerging market debt funds

156

—

—

—

166

166

Private equity investments

141

—

—

—

198

198

Real estate

131

—

—

—

202

202

Other commingled funds

9

6

—

—

3

9

Debt securities:

Government securities

68

—

69

—

—

69

U.S. corporate bonds

320

—

322

—

—

322

Non U.S. corporate bonds

50

—

50

—

—

50

Equity securities:

U.S. equities

271

557

—

—

—

557

Non U.S. equities

152

234

—

—

—

234

Total

$
1,591

$
1,043

$
441

$
—

$
659

$
2,143

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet, which also includes $140 million of equity investments in unconsolidated subsidiaries and $114 million of rabbi trust assets and miscellaneous investments.
^(b)
Due to limited availability of published pricing and a lack of immediate redeemability, certain fund investments measured at NAV are not required to be categorized within the fair value hierarchy.

Final Contractual Maturity Dates of Debt Securities in the Nuclear Decommissioning Fund by Asset Class
The following table summarizes the final contractual maturity dates of the debt securities in the nuclear decommissioning fund, by asset class, as of March 31, 2018:

Final Contractual Maturity
(Millions of Dollars)

Due in 1 Year
or Less

Due in 1 to 5
Years

Due in 5 to 10
Years

Due after 10
Years

Total
Government securities

$
—

$
9

$
2

$
66

$
77

U.S. corporate bonds

3

87

174

57

321

Non U.S. corporate bonds

—

16

33

4

53

Debt securities

$
3

$
112

$
209

$
127

$
451

Rabbi Trust Securities Amortized Cost and Fair Value Measured on Recurrring Basis [Table Text Block]
In 2016, Xcel Energy established rabbi trusts to provide partial funding for future distributions of its supplemental executive retirement plan and deferred compensation plan. The following tables present the cost and fair value of the assets held in rabbi trusts as of March 31, 2018 and Dec. 31, 2017:

March 31, 2018

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Total
Rabbi Trusts ^(a)

Cash equivalents

$
11

$
11

$
—

$
—

$
11

Mutual funds

48

50

—

—

50

Total

$
59

$
61

$
—

$
—

$
61

Dec. 31, 2017

Fair Value
(Millions of Dollars)

Cost

Level 1

Level 2

Level 3

Total
Rabbi Trusts ^(a)

Cash equivalents

$
12

$
12

$
—

$
—

$
12

Mutual funds

47

50

—

—

50

Total

$
59

$
62

$
—

$
—

$
62

^(a)
Reported in nuclear decommissioning fund and other investments on the consolidated balance sheet.

Gross Notional Amounts of Commodity Forwards, Options, and FTRs
The following table details the gross notional amounts of commodity forwards, options and FTRs as of March 31, 2018 and Dec. 31, 2017:
(Amounts in Millions) ^(a)(b)

March 31, 2018

Dec. 31, 2017
Megawatt hours of electricity

60

68

Million British thermal units of natural gas

30

37

^(a)
Amounts are not reflective of net positions in the underlying commodities.
^(b)
Notional amounts for options are included on a gross basis, but are weighted for the probability of exercise.

Impact of Derivative Activity on Accumulated Other Comprehensive Loss, Regulatory Assets and Liabilities, and Income
The following tables detail the impact of derivative activity during the three months ended March 31, 2018 and 2017 on accumulated other comprehensive loss, regulatory assets and liabilities, and income:

Three Months Ended March 31, 2018

Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:

Pre-Tax Losses Reclassified into Income During the Period from:

Pre-Tax Gains (Losses) Recognized
During the Period in Income

(Millions of Dollars)

Accumulated Other
Comprehensive Loss

Regulatory
(Assets) and Liabilities

Accumulated Other
Comprehensive Loss

Regulatory
Assets and (Liabilities)

Other derivative instruments

Commodity trading

$
—

$
—

$
—

$
—

$
3

^(b)
Electric commodity

—

(4
)

—

3

^(c)
—

Natural gas commodity

—

1

—

2

^(d)
(2
)
^(d)
Total

$
—

$
(3
)

$
—

$
5

$
1

Three Months Ended March 31, 2017

Pre-Tax Fair Value Gains (Losses) Recognized During the Period in:

Pre-Tax (Gains) Losses Reclassified into Income During the Period from:

Pre-Tax Gains (Losses) Recognized
During the Period in Income

(Millions of Dollars)

Accumulated Other
Comprehensive Loss

Regulatory
(Assets) and Liabilities

Accumulated Other
Comprehensive Loss

Regulatory
Assets and (Liabilities)

Derivatives designated as cash flow hedges

Interest rate

$
—

$
—

$
1

^(a)
$
—

$
—

Total

$
—

$
—

$
1

$
—

$
—

Other derivative instruments

Commodity trading

$
—

$
—

$
—

$
—

$
1

^(b)
Electric commodity

—

1

—

(4
)
^(c)
—

Natural gas commodity

—

(6
)

—

1

^(d)
(4
)
^(d)
Total

$
—

$
(5
)

$
—

$
(3
)

$
(3
)

^(a)
Amounts are recorded to interest charges.
^(b)
Amounts are recorded to electric operating revenues. Portions of these gains and losses are subject to sharing with electric customers through margin-sharing mechanisms and deducted from gross revenue, as appropriate.
^(c)
Amounts are recorded to electric fuel and purchased power. These derivative settlement gains and losses are shared with electric customers through fuel and purchased energy cost-recovery mechanisms, and reclassified out of income as regulatory assets or liabilities, as appropriate.
^(d)
Certain derivatives are utilized to mitigate natural gas price risk for electric generation and are recorded to electric fuel and purchased power, subject to cost-recovery mechanisms and reclassified to a regulatory asset, as appropriate. Amounts for the three months ended March 31, 2018 and 2017 included $1 million of settlement losses and $0.9 million of settlement gains, respectively. The remaining derivative settlement gains and losses for the three months ended March 31, 2018 and 2017 relate to natural gas operations and are recorded to cost of natural gas sold and transported. These gains and losses are subject to cost-recovery and reclassified out of income to a regulatory asset or liability, as appropriate.

Derivative Assets and Liabilities Measured at Fair Value on a Recurring Basis by Hierarchy Level
2017.

Recurring Fair Value Measurements — The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of March 31, 2018:

March 31, 2018

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative assets

Other derivative instruments:

Commodity trading

$
1

$
22

$
—

$
23

$
(12
)

$
11

Electric commodity

—

—

13

13

(2
)

11

Total current derivative assets

$
1

$
22

$
13

$
36

$
(14
)

22

PPAs ^(a)

6

Current derivative instruments

$
28

Noncurrent derivative assets

Other derivative instruments:

Commodity trading

$
1

$
37

$
8

$
46

$
(15
)

$
31

Total noncurrent derivative assets

$
1

$
37

$
8

$
46

$
(15
)

31

PPAs ^(a)

18

Noncurrent derivative instruments

$
49

March 31, 2018

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative liabilities

Other derivative instruments:

Commodity trading

$
1

$
19

$
—

$
20

$
(13
)

$
7

Electric commodity

—

—

2

2

(1
)

1

Total current derivative liabilities

$
1

$
19

$
2

$
22

$
(14
)

8

PPAs ^(a)

22

Current derivative instruments

$
30

Noncurrent derivative liabilities

Other derivative instruments:

Commodity trading

$
2

$
30

$
—

$
32

$
(19
)

$
13

Total noncurrent derivative liabilities

$
2

$
30

$
—

$
32

$
(19
)

13

PPAs ^(a)

107

Noncurrent derivative instruments

$
120

^(a)
During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
^(b)
Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at March 31, 2018. At March 31, 2018, derivative assets and liabilities include no obligations to return cash collateral and the rights to reclaim cash collateral of $4 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

The following table presents for each of the fair value hierarchy levels, Xcel Energy’s derivative assets and liabilities measured at fair value on a recurring basis as of Dec. 31, 2017:

Dec. 31, 2017

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative assets

Other derivative instruments:

Commodity trading

$
2

$
22

$
—

$
24

$
(15
)

$
9

Electric commodity

—

—

32

32

(2
)

30

Total current derivative assets
$
2

$
22

$
32

$
56

$
(17
)

39

PPAs ^(a)

5

Current derivative instruments

$
44

Noncurrent derivative assets

Other derivative instruments:

Commodity trading

$
—

$
31

$
5

$
36

$
(7
)

$
29

Total noncurrent derivative assets
$
—

$
31

$
5

$
36

$
(7
)

29

PPAs ^(a)

19

Noncurrent derivative instruments

$
48

Dec. 31, 2017

Fair Value

Fair Value Total

Counterparty Netting ^(b)

Total
(Millions of Dollars)

Level 1

Level 2

Level 3

Current derivative liabilities

Other derivative instruments:

Commodity trading

$
2

$
18

$
—

$
20

$
(15
)

$
5

Electric commodity

—

—

2

2

(2
)

—

Natural gas commodity

—

1

—

1

—

1

Total current derivative liabilities

$
2

$
19

$
2

$
23

$
(17
)

6

PPAs ^(a)

23

Current derivative instruments

$
29

Noncurrent derivative liabilities

Other derivative instruments:

Commodity trading

$
—

$
24

$
—

$
24

$
(10
)

$
14

Total noncurrent derivative liabilities

$
—

$
24

$
—

$
24

$
(10
)

14

PPAs ^(a)

112

Noncurrent derivative instruments

$
126

^(a)
During 2006, Xcel Energy qualified these contracts under the normal purchase exception. Based on this qualification, the contracts are no longer adjusted to fair value and the previous carrying value of these contracts will be amortized over the remaining contract lives along with the offsetting regulatory assets and liabilities.
^(b)
Xcel Energy nets derivative instruments and related collateral in its consolidated balance sheet when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements at Dec. 31, 2017. At Dec. 31, 2017, derivative assets and liabilities include no obligations to return cash collateral and rights to reclaim cash collateral of $3 million. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.

Changes in Level 3 Commodity Derivatives
ments.

The following table presents the changes in Level 3 commodity derivatives for the three months ended March 31, 2018 and 2017:

Three Months Ended March 31
(Millions of Dollars)

2018

2017
Balance at Jan. 1

$
35

$
17

Purchases

1

4

Settlements

(12
)

(20
)
Net transactions recorded during the period:

Gains recognized in earnings ^(a)

2

—

Net (losses) gains recognized as regulatory assets and liabilities

(7
)

5

Balance at March 31

$
19

$
6

^(a)
These amounts relate to commodity derivatives held at the end of the period.

Carrying Amount and Fair Value of Long-term Debt

As of March 31, 2018 and Dec. 31, 2017, other financial instruments for which the carrying amount did not equal fair value were as follows:

March 31, 2018

Dec. 31, 2017
(Millions of Dollars)

Carrying Amount

Fair Value

Carrying Amount

Fair Value
Long-term debt, including current portion

$
14,979

$
15,877

$
14,976

$
16,531

v3.8.0.1

Other Income, Net (Tables)
3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Other Income, Net
Other income, net consisted of the following:

Three Months Ended March 31
(Millions of Dollars)

2018

2017
Interest income

$
5

$
4

Other nonoperating income

1

4

Benefits non-service cost

(5
)

(6
)
Insurance policy expense

—

(1
)
Other income, net

$
1

$
1

v3.8.0.1

Segment Information (Tables)
3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Results from Operations by Reportable Segment
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Reconciling Eliminations

Consolidated Total
Three Months Ended March 31, 2018

Operating revenues from external customers

$
2,270

$
662

$
19

$
—

$
2,951

Intersegment revenues

—

—

—

—

—

Total revenues

$
2,270

$
662

$
19

$
—

$
2,951

Net income (loss)

$
219

$
95

$
(22
)

$
(1
)

$
291

(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Reconciling Eliminations

Consolidated Total
Three Months Ended March 31, 2017

Operating revenues from external customers

$
2,299

$
626

$
21

$
—

$
2,946

Intersegment revenues

—

—

—

—

—

Total revenues

$
2,299

$
626

$
21

$
—

$
2,946

Net income (loss)

$
194

$
63

$
(18
)

$
—

$
239

v3.8.0.1

Earnings Per Share (Tables)
3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Dilutive Impact of Common Stock Equivalents
The dilutive impact of common stock equivalents affecting EPS was as follows:

Three Months Ended March 31, 2018

Three Months Ended March 31, 2017
(Amounts in millions, except per share data)

Income

Shares

Per Share
Amount

Income

Shares

Per Share
Amount
Net income

$
291

—

—

$
239

—

—

Basic EPS:

Earnings available to common shareholders

291

509.0

$
0.57

239

508.3

$
0.47

Effect of dilutive securities:

Equity awards

—

0.5

—

—

0.5

—

Diluted EPS:

Earnings available to common shareholders

$
291

509.5

$
0.57

$
239

508.8

$
0.47

v3.8.0.1

Benefit Plans and Other Postretirement Benefits (Tables)
3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit)
Components of Net Periodic Benefit Cost (Credit)

Three Months Ended March 31

2018

2017

2018

2017
(Millions of Dollars)

Pension Benefits

Postretirement Health
Care Benefits
Service cost

$
24

$
24

$
1

$
1

Interest cost ^(a)

33

36

5

6

Expected return on plan assets ^(a)

(52
)

(52
)

(6
)

(6
)
Amortization of prior service credit ^(a)

(1
)

—

(3
)

(3
)
Amortization of net loss ^(a)

27

26

2

1

Net periodic benefit cost (credit)

31

34

(1
)

(1
)
Costs not recognized due to the effects of regulation

—

(4
)

—

—

Net benefit cost (credit) recognized for financial reporting

$
31

$
30

$
(1
)

$
(1
)

^(a)
The components of net periodic cost other than the service cost component are included in the line item “other income, net” in the income statement or capitalized on the balance sheet as a regulatory asset.

v3.8.0.1

Other Comprehensive Income (Tables)
3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax
Changes in accumulated other comprehensive loss, net of tax, for the three months ended March 31, 2018 and 2017 were as follows:

Three Months Ended March 31, 2018
(Millions of Dollars)

Gains and Losses
on Cash Flow Hedges

Defined Benefit Pension and
Postretirement Items

Total
Accumulated other comprehensive loss at Jan. 1

$
(58
)

$
(67
)

$
(125
)
Losses reclassified from net accumulated other comprehensive loss

—

1

1

Net current period other comprehensive income

—

1

1

Accumulated other comprehensive loss at March 31

$
(58
)

$
(66
)

$
(124
)

Three Months Ended March 31, 2017
(Millions of Dollars)

Gains and Losses
on Cash Flow Hedges

Defined Benefit Pension and
Postretirement Items

Total
Accumulated other comprehensive loss at Jan. 1

$
(51
)

$
(59
)

$
(110
)
Losses reclassified from net accumulated other comprehensive loss

1

1

2

Net current period other comprehensive income

1

1

2

Accumulated other comprehensive loss at March 31

$
(50
)

$
(58
)

$
(108
)

Reclassifications out of Accumulated Other Comprehensive Loss
Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2018 and 2017 were as follows:
(Millions of Dollars)

Amounts Reclassified from Accumulated
Other Comprehensive Loss

Three Months Ended March 31, 2018

Three Months Ended March 31, 2017

Losses on cash flow hedges:

Interest rate derivatives

$
—

^(a)
$
1

^(a)
Total, net of tax

—

1

Defined benefit pension and postretirement losses:

Amortization of net loss

1

^(b)
2

^(b)
Total, pre-tax

1

2

Tax benefit

—

(1
)

Total, net of tax

1

1

Total amounts reclassified, net of tax

$
1

$
2

^(a)
Included in interest charges
^(b)
Included in the computation of net periodic pension and postretirement benefit costs. See Note 12 for details regarding these benefit plans.

v3.8.0.1

Revenues (Tables)
3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue
In the following tables, revenue is classified by the type of goods/services rendered and market/customer type. The tables also reconcile revenue to the reportable segments.

Three Months Ended March 31, 2018
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Total
Major revenue types

Revenue from contracts with customers:

Residential

$
687

$
390

$
9

$
1,086

Commercial and industrial (C&I)

1,112

207

7

1,326

Other

33

—

1

34

Total retail

1,832

597

17

2,446

Wholesale

188

—

—

188

Transmission

123

—

—

123

Other

39

28

—

67

Total revenue from contracts with customers

2,182

625

17

2,824

Alternative revenue and other

88

37

2

127

Total revenues

$
2,270

$
662

$
19

$
2,951

Three Months Ended March 31, 2017
(Millions of Dollars)

Regulated Electric

Regulated Natural Gas

All Other

Total
Major revenue types

Revenue from contracts with customers:

Residential

$
685

$
374

$
8

$
1,067

C&I

1,148

195

9

1,352

Other

32

—

1

33

Total retail

1,865

569

18

2,452

Wholesale

181

—

—

181

Transmission

121

—

—

121

Other

25

25

—

50

Total revenue from contracts with customers

2,192

594

18

2,804

Alternative revenue and other

107

32

3

142

Total revenues

$
2,299

$
626

$
21

$
2,946

v3.8.0.1

Accounting Pronouncements (Details) - Accounting Standards Update 2017-07
$ in Millions
3 Months Ended

Mar. 31, 2017

USD ($)

Operating and Maintenance Expense

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Net benefit cost (credit) recognized for financial reporting $ (6)

Other Income

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Net benefit cost (credit) recognized for financial reporting $ 6

v3.8.0.1

Balance Sheet Data, Accounts Receivable (Details) - USD ($)
$ in Millions

Mar. 31, 2018

Dec. 31, 2017

Accounts receivable, net

Accounts receivable $ 921 $ 849

Less allowance for bad debts (53) (52)

Accounts receivable, net $ 868 $ 797

v3.8.0.1

Balance Sheet Related Disclosures, Inventories (Details) - USD ($)
$ in Millions

Mar. 31, 2018

Dec. 31, 2017

Public Utilities, Inventory [Line Items]

Inventories $ 492 $ 610

Materials and supplies

Public Utilities, Inventory [Line Items]

Inventories 311 311

Fuel

Public Utilities, Inventory [Line Items]

Inventories 144 186

Natural gas

Public Utilities, Inventory [Line Items]

Inventories $ 37 $ 113

v3.8.0.1

Commitments and Contingencies, Purchased Power Agreements (Details) - Independent Power Producing Entities - MW
3 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Variable Interest Entity [Line Items]

Generating capacity under long term purchased power agreements (in MW) 3,537 3,537

Purchase Power Agreement Expiration (Year) 2041

v3.8.0.1

Commitments and Contingencies, Guarantees and Indemnifications (Details) - USD ($)

Mar. 31, 2018

Dec. 31, 2017

Guarantees [Abstract]

Assets held as collateral $ 0 $ 0

Payment or Performance Guarantee

Guarantees [Abstract]

Guarantees issued and outstanding 18,600,000 18,800,000

Current exposure under these guarantees 0 0

Payment or Performance Guarantee | Surety Bonds

Guarantees [Abstract]

Guarantees issued and outstanding 51,700,000 53,100,000

Other MGP Sites [Member]

Guarantees [Abstract]

Accrual for Environmental Loss Contingencies, Gross $ 4,000,000 $ 4,000,000

v3.8.0.1

Commitments and Contingencies, Environmental Contingencies - Site Contingencies (Details)
$ in Millions
3 Months Ended 12 Months Ended

Mar. 31, 2018

USD ($)

Site

Dec. 31, 2017

USD ($)

Other MGP Sites [Member]

Manufactured Gas Plant (MGP) Site [Abstract]

Accrual for Environmental Loss Contingencies, Gross $ 4 $ 4

Number of identified MGP sites under current investigation and/or remediation in addition to those separately disclosed 11

NSP-Wisconsin | Ashland MGP Site

Manufactured Gas Plant (MGP) Site [Abstract]

Number of properties not owned included in superfund site | Site 2

Accrual for Environmental Loss Contingencies, Gross $ 33 30

Current Cost Estimate for Site Remediation 172

Estimated amount spent on cleanup $ 139

Approved amortization period for recovery of remediation costs in natural gas rates (in years) 10

Carrying cost percentage to be applied to unamortized regulatory asset 3.00%

NSP-Minnesota | Fargo MGP Site

Manufactured Gas Plant (MGP) Site [Abstract]

Accrual for Environmental Loss Contingencies, Gross $ 15 16

Current Cost Estimate for Site Remediation 22

Estimated amount spent on cleanup $ 7

Percentage of Response Costs Allocable to the Minnesota Jurisdiction 88.00%

PSCW Proceeding - Gas Rate Case 2017 - Gas Rates 2017 | NSP-Wisconsin | Ashland MGP Site

Manufactured Gas Plant (MGP) Site [Abstract]

Public Utilities, Requested annual recovery collected through base rates $ 12

PSCW Proceeding - Gas Rate Case 2017 - Gas Rates 2018 [Member] | NSP-Wisconsin | Ashland MGP Site

Manufactured Gas Plant (MGP) Site [Abstract]

Public Utilities, Requested annual recovery collected through base rates $ 18

v3.8.0.1

Commitments and Contingencies, Legal Contingencies (Details)
1 Months Ended

Dec. 31, 2015

Mar. 31, 2018

Dec. 31, 2009

Gas Trading Litigation

Legal Contingencies [Abstract]

Loss Contingency, Pending Claims, Number 6 13

Loss Contingency, Subset of Cases within Multi-District Litigation, Number 2

NSP-Wisconsin | Gas Trading Litigation

Legal Contingencies [Abstract]

Loss Contingency, Pending Claims, Number 2

Minimum | PSCo | Line Extension Disputes

Legal Contingencies [Abstract]

Loss Contingency, Number of Plaintiffs 50

v3.8.0.1

Borrowings and Other Financing Instruments, Commercial Paper (Details) - USD ($)
3 Months Ended 12 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Short-term Debt [Line Items]

Amount outstanding at period end $ 1,025,000,000 $ 814,000,000

Commercial Paper

Short-term Debt [Line Items]

Borrowing limit 3,250,000,000 3,250,000,000

Amount outstanding at period end 1,025,000,000 814,000,000

Average amount outstanding 1,000,000,000 644,000,000

Maximum amount outstanding $ 1,197,000,000 $ 1,247,000,000

Weighted average interest rate, computed on a daily basis (percentage) 1.93% 1.35%

Weighted average interest rate at period end (percentage) 2.34% 1.90%

v3.8.0.1

Borrowings and Other Financing Instruments, Letters of Credit (Details) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Line of Credit Facility [Line Items]

Amount outstanding at period end $ 1,025 $ 814

Letter of Credit

Line of Credit Facility [Line Items]

Amount outstanding at period end $ 31 $ 30

Letter of Credit | Letter of Credit

Line of Credit Facility [Line Items]

Term of letters of credit (in years) 1 year

v3.8.0.1

Borrowings and Other Financing Instruments, Credit Facilities (Details) - USD ($)
3 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] $ 3,250,000,000

Drawn ^[2] 1,056,000,000

Available 2,194,000,000

Direct advances on the credit facility outstanding 0 $ 0

Xcel Energy Inc. | Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] 1,500,000,000

Drawn ^[2] 898,000,000

Available $ 602,000,000

Maturity Date Jun. 30, 2021

Xcel Energy Inc. | 364-Day Term Loan [Member]

Line of Credit Facility [Line Items]

Credit Facility $ 500,000,000

Term of letters of credit (in years) 364 days

PSCo | Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] $ 700,000,000

Drawn ^[2] 99,000,000

Available $ 601,000,000

Maturity Date Jun. 30, 2021

NSP-Minnesota | Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] $ 500,000,000

Drawn ^[2] 25,000,000

Available $ 475,000,000

Maturity Date Jun. 30, 2021

SPS | Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] $ 400,000,000

Drawn ^[2] 12,000,000

Available $ 388,000,000

Maturity Date Jun. 30, 2021

NSP-Wisconsin | Credit Facilities

Line of Credit Facility [Line Items]

Credit Facility ^[1] $ 150,000,000

Drawn ^[2] 22,000,000

Available $ 128,000,000

Maturity Date Jun. 30, 2021

[1] These credit facilities expire in June 2021, with the exception of Xcel Energy Inc.’s $500 million 364-day term loan agreement entered into in December 2017.

[2] Includes outstanding commercial paper, term loan borrowings and letters of credit.

v3.8.0.1

Fair Value of Financial Assets and Liabilities (Details)
3 Months Ended

Mar. 31, 2018

Minimum | Commingled and international equity funds

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]

Notice period for investment redemption (in days) 1 day

Minimum | Real Estate Funds

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]

Notice period for investment redemption (in days) 45 days

Maximum | Commingled and international equity funds

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]

Notice period for investment redemption (in days) 90 days

Maximum | Real Estate Funds

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]

Notice period for investment redemption (in days) 90 days

v3.8.0.1

Fair Value of Financial Assets and Liabilities, Final Contractual Maturity Dates of Debt Securities in Nuclear Decommissioning Fund (Details)
$ in Millions

Mar. 31, 2018

USD ($)

Final Contractual Maturity [Abstract]

Due in 1 Year or Less $ 3

Due in 1 to 5 Years 112

Due in 5 to 10 Years 209

Due after 10 Years 127

Total 451

Government securities

Final Contractual Maturity [Abstract]

Due in 1 Year or Less 0

Due in 1 to 5 Years 9

Due in 5 to 10 Years 2

Due after 10 Years 66

Total 77

U.S. corporate bonds

Final Contractual Maturity [Abstract]

Due in 1 Year or Less 3

Due in 1 to 5 Years 87

Due in 5 to 10 Years 174

Due after 10 Years 57

Total 321

Non U.S. corporate bonds

Final Contractual Maturity [Abstract]

Due in 1 Year or Less 0

Due in 1 to 5 Years 16

Due in 5 to 10 Years 33

Due after 10 Years 4

Total $ 53

v3.8.0.1

Fair Value of Financial Assets and Liabilities, Credit Related Contingent Features (Details) - USD ($)

Mar. 31, 2018

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Derivative instruments in a gross liability position $ 0 $ 0

Collateral posted on derivative instruments 0 0

Collateral posted related to adequate assurance clauses in derivative contracts $ 0 $ 0

v3.8.0.1

Fair Value of Financial Assets and Liabilities, Changes in Level 3 Commodity Derivatives (Details) - Commodity Contract - USD ($)
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]

Balance at beginning of period $ 35,000,000 $ 17,000,000

Purchases 1,000,000 4,000,000

Settlements (12,000,000) (20,000,000)

Gains (losses) recognized in earnings ^[1] 2,000,000 0

Net gains recognized as regulatory assets and liabilities (7,000,000) 5,000,000

Balance at end of period 19,000,000 6,000,000

Transfers into Level 3 0 0

Transfers out of Level 3 $ 0 $ 0

[1] 017: Three Months Ended March 31(Millions of Dollars) 2018 2017Balance at Jan. 1 $35 $17Purchases 1 4Settlements (12) (20)Net transactions recorded during the period: Gains recognized in earnings (a) 2 —Net (losses) gains recognized as regulatory assets and liabilities (7) 5Balance at March 31 $19 $6 (a) These amounts relate to commodity derivatives held at the end of the

v3.8.0.1

Fair Value of Financial Assets and Liabilities, Fair Value of Long-Term Debt (Details) - USD ($)
$ in Millions

Mar. 31, 2018

Dec. 31, 2017

Carrying Amount

Financial Liabilities, Balance Sheet Groupings [Abstract]

Long-term Debt, Including Current Portion $ 14,979 $ 14,976

Fair Value

Financial Liabilities, Balance Sheet Groupings [Abstract]

Long-term Debt, Including Current Portion $ 15,877 $ 16,531

v3.8.0.1

Other Income, Net (Details) - USD ($)
$ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Other Income and Expenses [Abstract]

Interest income $ 5 $ 4

Other nonoperating income 1 4

Defined Benefit Plan, Non-service Costs (5) (6)

Insurance policy expense 0 (1)

Other income, net $ 1 $ 1

v3.8.0.1

Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Dilutive Impact of Common Stock Equivalents on Earnings per Share (Abstract]

Net income $ 291 $ 239

Basic earnings per share [Abstract]

Earnings available to common shareholders $ 291 $ 239

Weighted average common shares outstanding - basic (in shares) 509.0 508.3

Earnings available to common shareholders - basic (in dollars per share) $ 0.57 $ 0.47

Effect of dilutive securities [Abstract]

Time based equity awards (in shares) 0.5 0.5

Diluted earnings per share [Abstract]

Earnings available to common shareholders $ 291 $ 239

Weighted average common shares outstanding - diluted (in shares) 509.0 508.8

Earnings available to common shareholders - diluted (in dollars per share) $ 0.57 $ 0.47

v3.8.0.1

Benefit Plans and Other Postretirement Benefits (Details)
$ in Millions
1 Months Ended 3 Months Ended

Jan. 31, 2018

USD ($)

Plan

Mar. 31, 2018

USD ($)

Mar. 31, 2017

USD ($)

Pension Plan [Member]

Components of Net Periodic Benefit Cost [Abstract]

Service cost $ 24 $ 24

Interest cost (a) 33 36

Expected return on plan assets (a) (52) (52)

Amortization of prior service credit (a) (1) 0

Amortization of net loss (a) 27 26

Net periodic benefit cost (credit) 31 34

Costs not recognized due to the effects of regulation 0 (4)

Net benefit cost (credit) recognized for financial reporting 31 30

Total contributions to Xcel Energy's pension plans during the period $ 150

Number of pension plans to which contributions were made | Plan 4

Other Postretirement Benefits Plan [Member]

Components of Net Periodic Benefit Cost [Abstract]

Service cost 1 1

Interest cost (a) 5 6

Expected return on plan assets (a) (6) (6)

Amortization of prior service credit (a) (3) (3)

Amortization of net loss (a) 2 1

Net periodic benefit cost (credit) (1) (1)

Costs not recognized due to the effects of regulation 0 0

Net benefit cost (credit) recognized for financial reporting $ (1) $ (1)

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2018	Apr. 23, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	XCEL ENERGY INC
Entity Central Index Key	0000072903
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		508,856,950
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating revenues
Electric	$ 2,270	$ 2,299
Natural gas	662	626
Other	19	21
Total operating revenues	2,951	2,946
Operating expenses
Electric fuel and purchased power	932	925
Cost of natural gas sold and transported	375	365
Cost of sales — other	8	9
Operating and maintenance expenses	557	580
Conservation and demand side management expenses	71	68
Depreciation and amortization	383	365
Taxes (other than income taxes)	145	142
Total operating expenses	2,471	2,454
Operating income	480	492
Other income, net	1	1
Equity earnings of unconsolidated subsidiaries	6	8
Allowance for funds used during construction — equity	23	14
Interest charges and financing costs
Interest charges — includes other financing costs of $6 and $6, respectively	171	166
Allowance for funds used during construction — debt	(11)	(7)
Total interest charges and financing costs	160	159
Income before income taxes	350	356
Income taxes	59	117
Net income	$ 291	$ 239
Weighted average common shares outstanding:
Basic (in shares)	509.0	508.3
Diluted (in shares)	509.0	508.8
Earnings per average common share:
Basic (in dollars per share)	$ 0.57	$ 0.47
Diluted (in dollars per share)	0.57	0.47
Cash dividends declared per common share (in dollars per share)	$ 0.38	$ 0.36

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Comprehensive income:
Net income	$ 291	$ 239
Pension and retiree medical benefits:
Amortization of losses included in net periodic benefit cost, net of tax of $0 and $1, respectively	1	1
Derivative instruments:
Reclassification of losses to net income, net of tax of $0 and $1, respectively	0	1
Other comprehensive income	1	2
Comprehensive income	$ 292	$ 241

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net income	$ 291	$ 239
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	387	369
Nuclear fuel amortization	31	31
Deferred income taxes	59	194
Allowance for equity funds used during construction	(23)	(14)
Equity earnings of unconsolidated subsidiaries	(6)	(8)
Dividends from unconsolidated subsidiaries	9	12
Share-based compensation expense	6	18
Other, net	(1)	4
Changes in operating assets and liabilities:
Accounts receivable	(71)	3
Accrued unbilled revenues	159	174
Inventories	118	88
Other current assets	1	(77)
Accounts payable	(42)	(144)
Net regulatory assets and liabilities	147	18
Other current liabilities	(17)	(43)
Pension and other employee benefit obligations	(146)	(149)
Change in other noncurrent assets	2	0
Change in other noncurrent liabilities	(17)	3
Net cash provided by operating activities	887	718
Investing activities
Utility capital/construction expenditures	(883)	(749)
Allowance for equity funds used during construction	23	14
Purchases of investment securities	(185)	(173)
Proceeds from the sale of investment securities	179	168
Investments in unconsolidated subsidiaries and other	(3)	(3)
Other, net	(3)	(5)
Net cash used in investing activities	(872)	(748)
Financing activities
Proceeds from short-term borrowings, net	211	213
Dividends paid	(175)	(173)
Other	(18)	(21)
Net cash provided by financing activities	18	19
Net change in cash and cash equivalents	33	(11)
Cash and cash equivalents at beginning of period	83	85
Cash and cash equivalents at end of period	116	74
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(181)	(174)
Supplemental disclosure of non-cash investing and financing transactions:
Property, plant and equipment additions in accounts payable	241	186
Issuance of common stock for equity awards	$ 20	$ 12

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 116	$ 83
Accounts receivable, net	868	797
Accrued unbilled revenues	605	764
Inventories	492	610
Regulatory assets	422	424
Derivative instruments	28	44
Prepaid taxes	63	68
Prepayments and other	188	183
Total current assets	2,782	2,973
Property, plant and equipment, net	34,679	34,329
Other assets
Nuclear decommissioning fund and other investments	2,404	2,397
Regulatory assets	2,965	3,005
Derivative instruments	49	48
Other	280	278
Total other assets	5,698	5,728
Total assets	43,159	43,030
Current liabilities
Current portion of long-term debt	457	457
Short-term debt	1,025	814
Accounts payable	1,027	1,243
Regulatory liabilities	270	239
Taxes accrued	544	448
Accrued interest	147	174
Dividends payable	193	183
Derivative instruments	30	29
Other	429	501
Total current liabilities	4,122	4,088
Deferred credits and other liabilities
Deferred income taxes	3,905	3,845
Deferred investment tax credits	57	58
Regulatory liabilities	5,141	5,083
Asset retirement obligations	2,504	2,475
Derivative instruments	120	126
Customer advances	200	193
Pension and employee benefit obligations	884	1,042
Other	143	145
Total deferred credits and other liabilities	12,954	12,967
Commitments and contingencies
Capitalization
Long-term debt	14,522	14,520
Common stock — 1,000,000,000 shares authorized of $2.50 par value; 508,661,859 and 507,762,881 shares outstanding at March 31, 2018 and Dec. 31, 2017, respectively	1,272	1,269
Additional paid in capital	5,903	5,898
Retained earnings	4,510	4,413
Accumulated other comprehensive loss	(124)	(125)
Total common stockholders’ equity	11,561	11,455
Total liabilities and equity	$ 43,159	$ 43,030

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Capitalization, Long-term Debt and Equity
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares outstanding (in shares)	508,661,859	507,762,881

CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Common Stock	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2016	$ 11,021	$ 1,268	$ 5,881	$ 3,982	$ (110)
Balance (in shares) at Dec. 31, 2016		507,223,000
Increase (Decrease) in Stockholders' Equity
Net income	239			239
Other comprehensive income	2				2
Dividends declared on common stock	(184)			(184)
Issuances of common stock (in shares)		611,000
Issuances of common stock	5	$ 1	4
Purchase of common stock (in shares)		(71,000)
Repurchases of common stock	(3)	$ 0	(3)
Share-based compensation	(10)		(9)	(1)
Ending balance at Mar. 31, 2017	11,070	$ 1,269	5,873	4,036	(108)
Balance (in shares) at Mar. 31, 2017		507,763,000
Beginning balance at Dec. 31, 2017	$ 11,455	$ 1,269	5,898	4,413	(125)
Balance (in shares) at Dec. 31, 2017	507,762,881	507,763,000
Increase (Decrease) in Stockholders' Equity
Net income	$ 291			291
Other comprehensive income	1				1
Dividends declared on common stock	(194)			(194)
Issuances of common stock (in shares)		921,000
Issuances of common stock	17	$ 3	14
Purchase of common stock (in shares)		(22,000)
Repurchases of common stock	(1)	$ 0	(1)
Share-based compensation	(8)		(8)	0
Ending balance at Mar. 31, 2018	$ 11,561	$ 1,272	$ 5,903	$ 4,510	$ (124)
Balance (in shares) at Mar. 31, 2018	508,661,859	508,662,000

Management's Opinion	3 Months Ended
Management's Opinion	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Management's Opinion	In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly, in accordance with accounting principles generally accepted in the United States of America (GAAP), the financial position of Xcel Energy Inc. and its subsidiaries as of March 31, 2018 and Dec. 31, 2017; the results of its operations, including the components of net income and comprehensive income, and changes in stockholders’ equity for the three months ended March 31, 2018 and 2017; and its cash flows for the three months ended March 31, 2018 and 2017. All adjustments are of a normal, recurring nature, except as otherwise disclosed. Management has also evaluated the impact of events occurring after March 31, 2018 up to the date of issuance of these consolidated financial statements. These statements contain all necessary adjustments and disclosures resulting from that evaluation. The Dec. 31, 2017 balance sheet information has been derived from the audited 2017 consolidated financial statements included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017. These notes to the consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for Quarterly Reports on Form 10-Q. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP on an annual basis have been condensed or omitted pursuant to such rules and regulations. For further information, refer to the consolidated financial statements and notes thereto, included in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, filed with the SEC on Feb. 23, 2018. Due to the seasonality of Xcel Energy’s electric and natural gas sales, interim results are not necessarily an appropriate base from which to project annual results.

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The significant accounting policies set forth in Note 1 to the consolidated financial statements in the Xcel Energy Inc. Annual Report on Form 10-K for the year ended Dec. 31, 2017, appropriately represent, in all material respects, the current status of accounting policies and are incorporated herein by reference.

Accounting Pronouncements	3 Months Ended
Accounting Pronouncements	Mar. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Pronouncements	Accounting Pronouncements Recently Issued Leases — In February 2016, the Financial Accounting Standards Board (FASB) issued Leases, Topic 842 (Accounting Standards Update (ASU) No. 2016-02), which for lessees requires balance sheet recognition of right-of-use assets and lease liabilities for most leases. This guidance will be effective for interim and annual reporting periods beginning after Dec. 15, 2018. Xcel Energy has not yet fully determined the impacts of implementation. However, adoption is expected to occur on Jan. 1, 2019 utilizing the practical expedients provided by the standard and proposed in Targeted Improvements, Topic 842 (Proposed ASU 2018-200). As such, agreements entered into prior to Jan. 1, 2019 that are currently considered leases are expected to be recognized on the consolidated balance sheet, including contracts for use of office space, equipment and natural gas storage assets, as well as certain purchased power agreements (PPAs) for natural gas-fueled generating facilities. Xcel Energy expects that similar agreements entered into after Dec. 31, 2018 will generally qualify as leases under the new standard. Recently Adopted Revenue Recognition — In May 2014, the FASB issued Revenue from Contracts with Customers, Topic 606 (ASU No. 2014-09), which provides a new framework for the recognition of revenue. Xcel Energy implemented the guidance on a modified retrospective basis on Jan. 1, 2018. Results for reporting periods beginning after Dec. 31, 2017 are presented in accordance with Topic 606, while prior period results have not been adjusted and continue to be reported in accordance with prior accounting guidance. Other than increased disclosures regarding revenues related to contracts with customers, the implementation did not have a significant impact on Xcel Energy’s consolidated financial statements. For related disclosures, see Note 14. Classification and Measurement of Financial Instruments — In January 2016, the FASB issued Recognition and Measurement of Financial Assets and Financial Liabilities, Subtopic 825-10 (ASU No. 2016-01), which eliminated the available-for-sale classification for marketable equity securities and also replaced the cost method of accounting for non-marketable equity securities with a model for recognizing impairments and observable price changes. Under the new standard, other than when the consolidation or equity method of accounting is utilized, changes in the fair value of equity securities are recognized in earnings. Xcel Energy implemented the guidance on Jan. 1, 2018. As a result of application of accounting principles for rate regulated entities, changes in the fair value of the securities in the nuclear decommissioning fund, historically classified as available-for-sale, continue to be deferred to a regulatory asset, and the overall adoption impacts were not material. Presentation of Net Periodic Benefit Cost — In March 2017, the FASB issued Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, Topic 715 (ASU No. 2017-07), which establishes that only the service cost element of pension cost may be presented as a component of operating income in the income statement. Also under the guidance, only the service cost component of pension cost is eligible for capitalization. As a result of application of accounting principles for rate regulated entities, a similar amount of pension cost, including non-service components, will be recognized consistent with the historical ratemaking treatment, and the impacts of adoption will be limited to changes in classification of non-service costs in the consolidated statement of income. Xcel Energy implemented the new guidance on Jan. 1, 2018, and as a result, $6 million of pension costs were retrospectively reclassified from operating and maintenance expenses to other income, net on the consolidated income statement for the three months ended March 31, 2017. Under a practical expedient permitted by the standard, Xcel Energy used benefit cost amounts disclosed for prior periods as the basis for retrospective application.

Accounting Pronouncements (Details) - Accounting Standards Update 2017-07 $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Operating and Maintenance Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net benefit cost (credit) recognized for financial reporting	$ (6)
Other Income
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net benefit cost (credit) recognized for financial reporting	$ 6

Balance Sheet Data, Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Accounts receivable, net
Accounts receivable	$ 921	$ 849
Less allowance for bad debts	(53)	(52)
Accounts receivable, net	$ 868	$ 797

Balance Sheet Related Disclosures, Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Public Utilities, Inventory [Line Items]
Inventories	$ 492	$ 610
Materials and supplies
Public Utilities, Inventory [Line Items]
Inventories	311	311
Fuel
Public Utilities, Inventory [Line Items]
Inventories	144	186
Natural gas
Public Utilities, Inventory [Line Items]
Inventories	$ 37	$ 113

Rate Matters, NSP-Minnesota (Details) - NSP-Minnesota $ in Millions	1 Months Ended								2 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Feb. 28, 2018 USD ($)	Nov. 30, 2017 USD ($)	Sep. 30, 2016	Jun. 30, 2016	Feb. 28, 2015	Nov. 30, 2013	Mar. 31, 2018 USD ($)	Mar. 31, 2018	Dec. 31, 2017 USD ($) MW
FERC Proceeding, MISO ROE Complaint
Rate Matters [Abstract]
Public Utilities, Base Return On Equity Charged To Customers Through Transmission Formula Rates							12.38%	12.38%
Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Recommended By Third Parties							8.67%	9.15%
Minnesota Public Utilities Commission \| Gas Utility Infrastructure Cost Rider 2017 [Member]
Rate Matters [Abstract]
Public Utilities, Approved Rider Revenue, Amount			$ 20
Minnesota Public Utilities Commission \| Gas Utility Infrastructure Cost Rider 2018 [Member]
Rate Matters [Abstract]
Public Utilities, Requested Rider Revenue, Amount				$ 28
Public Utilities, Revised Requested Rider Revenue		$ 24
Minnesota Public Utilities Commission \| MPUC Proceeding - 2017 and 2018 Renewable Energy Standard Rider - 2017 Rates [Member]
Rate Matters [Abstract]
Public Utilities, Requested Rider Revenue, Amount											$ (10)
Public Utilities, Revised Requested Rider Revenue									$ (13)
Minnesota Public Utilities Commission \| MPUC Proceeding - 2017 and 2018 Renewable Energy Standard Rider [Member]
Rate Matters [Abstract]
Public Utilities, Requested Return on Equity, Percentage											10.00%
Public Utilities, Facility Generating Capacity \| MW											1,550
Minnesota Public Utilities Commission \| MPUC Proceeding - 2017 and 2018 Renewable Energy Standard Rider - 2018 Rates [Member]
Rate Matters [Abstract]
Public Utilities, Requested Rider Revenue, Amount											$ 11
Public Utilities, Revised Requested Rider Revenue									$ 23
Federal Energy Regulatory Commission (FERC) \| FERC Proceeding, MISO ROE Complaint
Rate Matters [Abstract]
Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Approved					10.32%
Public Utilities, Length of Refund Period, In Months					15 months
Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, with RTO Adder, Approved										10.82%
Public Utilities, ROE Basis Point Adder, Approved										50
Administrative Law Judge \| FERC Proceeding, MISO ROE Complaint
Rate Matters [Abstract]
Public Utilities, ROE Applicable To Transmission Formula Rates In The MISO Region, Recommended By Third Parties						9.70%
Subsequent Event \| Minnesota Public Utilities Commission \| MPUC Proceeding - Tax Cuts and Jobs Act of 2017 [Member]
Rate Matters [Abstract]
Tax Cuts and Jobs Act of 2017, Estimated 2018 Electric Rate Reduction	$ 136
Tax Cuts and Jobs Act of 2017, Estimated 2018 Natural Gas Rate Reduction	7
Tax Cuts and Jobs Act of 2017, Proposed 2018 Electric Refund of TCJA Benefits	68
Tax Cuts and Jobs Act of 2017, Proposed Electric Deferral of TCJA Benefits	44
Tax Cuts and Jobs Act of 2017, Proposed Amount of Accelerated Depreciation	22
Tax Cuts and Jobs Act of 2017, Proposed Low Income Program Funding from TCJA Benefits	2
Tax Cuts and Jobs Act of 2017, Proposed 2018 Natural Gas Refund of TCJA Benefits	$ 3

Commitments and Contingencies, Purchased Power Agreements (Details) - Independent Power Producing Entities - MW	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Generating capacity under long term purchased power agreements (in MW)	3,537	3,537
Purchase Power Agreement Expiration (Year)	2041

Commitments and Contingencies, Guarantees and Indemnifications (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Guarantees [Abstract]
Assets held as collateral	$ 0	$ 0
Payment or Performance Guarantee
Guarantees [Abstract]
Guarantees issued and outstanding	18,600,000	18,800,000
Current exposure under these guarantees	0	0
Payment or Performance Guarantee \| Surety Bonds
Guarantees [Abstract]
Guarantees issued and outstanding	51,700,000	53,100,000
Other MGP Sites [Member]
Guarantees [Abstract]
Accrual for Environmental Loss Contingencies, Gross	$ 4,000,000	$ 4,000,000

Commitments and Contingencies, Environmental Contingencies - Site Contingencies (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) Site	Dec. 31, 2017 USD ($)
Other MGP Sites [Member]
Manufactured Gas Plant (MGP) Site [Abstract]
Accrual for Environmental Loss Contingencies, Gross	$ 4	$ 4
Number of identified MGP sites under current investigation and/or remediation in addition to those separately disclosed	11
NSP-Wisconsin \| Ashland MGP Site
Manufactured Gas Plant (MGP) Site [Abstract]
Number of properties not owned included in superfund site \| Site	2
Accrual for Environmental Loss Contingencies, Gross	$ 33	30
Current Cost Estimate for Site Remediation	172
Estimated amount spent on cleanup	$ 139
Approved amortization period for recovery of remediation costs in natural gas rates (in years)	10
Carrying cost percentage to be applied to unamortized regulatory asset	3.00%
NSP-Minnesota \| Fargo MGP Site
Manufactured Gas Plant (MGP) Site [Abstract]
Accrual for Environmental Loss Contingencies, Gross	$ 15	16
Current Cost Estimate for Site Remediation	22
Estimated amount spent on cleanup	$ 7
Percentage of Response Costs Allocable to the Minnesota Jurisdiction	88.00%
PSCW Proceeding - Gas Rate Case 2017 - Gas Rates 2017 \| NSP-Wisconsin \| Ashland MGP Site
Manufactured Gas Plant (MGP) Site [Abstract]
Public Utilities, Requested annual recovery collected through base rates		$ 12
PSCW Proceeding - Gas Rate Case 2017 - Gas Rates 2018 [Member] \| NSP-Wisconsin \| Ashland MGP Site
Manufactured Gas Plant (MGP) Site [Abstract]
Public Utilities, Requested annual recovery collected through base rates	$ 18

Commitments and Contingencies, Legal Contingencies (Details)	1 Months Ended
	Dec. 31, 2015	Mar. 31, 2018	Dec. 31, 2009
Gas Trading Litigation
Legal Contingencies [Abstract]
Loss Contingency, Pending Claims, Number		6	13
Loss Contingency, Subset of Cases within Multi-District Litigation, Number		2
NSP-Wisconsin \| Gas Trading Litigation
Legal Contingencies [Abstract]
Loss Contingency, Pending Claims, Number			2
Minimum \| PSCo \| Line Extension Disputes
Legal Contingencies [Abstract]
Loss Contingency, Number of Plaintiffs	50

Borrowings and Other Financing Instruments, Commercial Paper (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Amount outstanding at period end	$ 1,025,000,000	$ 814,000,000
Commercial Paper
Short-term Debt [Line Items]
Borrowing limit	3,250,000,000	3,250,000,000
Amount outstanding at period end	1,025,000,000	814,000,000
Average amount outstanding	1,000,000,000	644,000,000
Maximum amount outstanding	$ 1,197,000,000	$ 1,247,000,000
Weighted average interest rate, computed on a daily basis (percentage)	1.93%	1.35%
Weighted average interest rate at period end (percentage)	2.34%	1.90%

Borrowings and Other Financing Instruments, Letters of Credit (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Amount outstanding at period end	$ 1,025	$ 814
Letter of Credit
Line of Credit Facility [Line Items]
Amount outstanding at period end	$ 31	$ 30
Letter of Credit \| Letter of Credit
Line of Credit Facility [Line Items]
Term of letters of credit (in years)	1 year

Fair Value of Financial Assets and Liabilities (Details)	3 Months Ended
	Mar. 31, 2018
Minimum \| Commingled and international equity funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period for investment redemption (in days)	1 day
Minimum \| Real Estate Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period for investment redemption (in days)	45 days
Maximum \| Commingled and international equity funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period for investment redemption (in days)	90 days
Maximum \| Real Estate Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period for investment redemption (in days)	90 days

Fair Value of Financial Assets and Liabilities, Final Contractual Maturity Dates of Debt Securities in Nuclear Decommissioning Fund (Details) $ in Millions	Mar. 31, 2018 USD ($)
Final Contractual Maturity [Abstract]
Due in 1 Year or Less	$ 3
Due in 1 to 5 Years	112
Due in 5 to 10 Years	209
Due after 10 Years	127
Total	451
Government securities
Final Contractual Maturity [Abstract]
Due in 1 Year or Less	0
Due in 1 to 5 Years	9
Due in 5 to 10 Years	2
Due after 10 Years	66
Total	77
U.S. corporate bonds
Final Contractual Maturity [Abstract]
Due in 1 Year or Less	3
Due in 1 to 5 Years	87
Due in 5 to 10 Years	174
Due after 10 Years	57
Total	321
Non U.S. corporate bonds
Final Contractual Maturity [Abstract]
Due in 1 Year or Less	0
Due in 1 to 5 Years	16
Due in 5 to 10 Years	33
Due after 10 Years	4
Total	$ 53

Fair Value of Financial Assets and Liabilities, Credit Related Contingent Features (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Derivative instruments in a gross liability position	$ 0	$ 0
Collateral posted on derivative instruments	0	0
Collateral posted related to adequate assurance clauses in derivative contracts	$ 0	$ 0

Fair Value of Financial Assets and Liabilities, Fair Value of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Carrying Amount
Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term Debt, Including Current Portion	$ 14,979	$ 14,976
Fair Value
Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term Debt, Including Current Portion	$ 15,877	$ 16,531

Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended
Other Income, Net (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Other Income and Expenses [Abstract]
Interest income	$ 5	$ 4
Other nonoperating income	1	4
Defined Benefit Plan, Non-service Costs	(5)	(6)
Insurance policy expense	0	(1)
Other income, net	$ 1	$ 1

Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
Segment Information (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Equity investments in unconsolidated subsidiaries	$ 141		$ 140
Operating revenues	2,951	$ 2,946
Net income (loss)	291	239
Regulated Electric
Segment Reporting Information [Line Items]
Operating revenues	2,270	2,299
Net income (loss)	219	194
Regulated Natural Gas
Segment Reporting Information [Line Items]
Equity investments in unconsolidated subsidiaries	141		$ 140
Operating revenues	662	626
Net income (loss)	95	63
All Other
Segment Reporting Information [Line Items]
Operating revenues	19	21
Net income (loss)	(22)	(18)
Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	2,951	2,946
Operating Segments \| Regulated Electric
Segment Reporting Information [Line Items]
Operating revenues	2,270	2,299
Operating Segments \| Regulated Natural Gas
Segment Reporting Information [Line Items]
Operating revenues	662	626
Operating Segments \| All Other
Segment Reporting Information [Line Items]
Operating revenues	19	21
Intersegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues	0	0
Net income (loss)	(1)	0
Intersegment Eliminations \| Regulated Electric
Segment Reporting Information [Line Items]
Operating revenues	0	0
Intersegment Eliminations \| Regulated Natural Gas
Segment Reporting Information [Line Items]
Operating revenues	0	0
Intersegment Eliminations \| All Other
Segment Reporting Information [Line Items]
Operating revenues	$ 0	$ 0

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Dilutive Impact of Common Stock Equivalents on Earnings per Share (Abstract]
Net income	$ 291	$ 239
Basic earnings per share [Abstract]
Earnings available to common shareholders	$ 291	$ 239
Weighted average common shares outstanding - basic (in shares)	509.0	508.3
Earnings available to common shareholders - basic (in dollars per share)	$ 0.57	$ 0.47
Effect of dilutive securities [Abstract]
Time based equity awards (in shares)	0.5	0.5
Diluted earnings per share [Abstract]
Earnings available to common shareholders	$ 291	$ 239
Weighted average common shares outstanding - diluted (in shares)	509.0	508.8
Earnings available to common shareholders - diluted (in dollars per share)	$ 0.57	$ 0.47

Benefit Plans and Other Postretirement Benefits (Details) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2018 USD ($) Plan	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Pension Plan [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost		$ 24	$ 24
Interest cost (a)		33	36
Expected return on plan assets (a)		(52)	(52)
Amortization of prior service credit (a)		(1)	0
Amortization of net loss (a)		27	26
Net periodic benefit cost (credit)		31	34
Costs not recognized due to the effects of regulation		0	(4)
Net benefit cost (credit) recognized for financial reporting		31	30
Total contributions to Xcel Energy's pension plans during the period	$ 150
Number of pension plans to which contributions were made \| Plan	4
Other Postretirement Benefits Plan [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost		1	1
Interest cost (a)		5	6
Expected return on plan assets (a)		(6)	(6)
Amortization of prior service credit (a)		(3)	(3)
Amortization of net loss (a)		2	1
Net periodic benefit cost (credit)		(1)	(1)
Costs not recognized due to the effects of regulation		0	0
Net benefit cost (credit) recognized for financial reporting		$ (1)	$ (1)

Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss) at beginning of period	$ 11,455,000
(Gains) losses reclassified from net accumulated other comprehensive loss	1	$ 2
Accumulated other comprehensive income (loss) at end of period	11,561,000
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss) at beginning of period	(58)	(51)
(Gains) losses reclassified from net accumulated other comprehensive loss	0	1
Net current period other comprehensive income (loss)	0	1
Accumulated other comprehensive income (loss) at end of period	(58)	(50)
Defined Benefit Pension and Postretirement Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss) at beginning of period	(67)	(59)
(Gains) losses reclassified from net accumulated other comprehensive loss	1	1
Net current period other comprehensive income (loss)	1	1
Accumulated other comprehensive income (loss) at end of period	(66)	(58)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss) at beginning of period	(125)	(110)
(Gains) losses reclassified from net accumulated other comprehensive loss	1	2
Net current period other comprehensive income (loss)	1	2
Accumulated other comprehensive income (loss) at end of period	$ (124)	$ (108)

Revenues (Details) - USD ($) $ in Millions	3 Months Ended
Revenues (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 2,824	$ 2,804
Alternative revenue and other	127	142
Total operating revenues	$ 2,951	2,946
Maximum number of months following end of annual period in which revenues are earned to be included in incentive programs	24 months
Retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 2,446	2,452
Retail \| Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,086	1,067
Retail \| Commercial and industrial (C&I)
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,326	1,352
Retail \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	34	33
Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	188	181
Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	123	121
Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	67	50
Regulated Electric
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,182	2,192
Alternative revenue and other	88	107
Total operating revenues	2,270	2,299
Regulated Electric \| Retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,832	1,865
Regulated Electric \| Retail \| Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	687	685
Regulated Electric \| Retail \| Commercial and industrial (C&I)
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,112	1,148
Regulated Electric \| Retail \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	33	32
Regulated Electric \| Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	188	181
Regulated Electric \| Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	123	121
Regulated Electric \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	39	25
Regulated Natural Gas
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	625	594
Alternative revenue and other	37	32
Total operating revenues	662	626
Regulated Natural Gas \| Retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	597	569
Regulated Natural Gas \| Retail \| Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	390	374
Regulated Natural Gas \| Retail \| Commercial and industrial (C&I)
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	207	195
Regulated Natural Gas \| Retail \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
Regulated Natural Gas \| Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
Regulated Natural Gas \| Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
Regulated Natural Gas \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	28	25
All Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	17	18
Alternative revenue and other	2	3
Total operating revenues	19	21
All Other \| Retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	17	18
All Other \| Retail \| Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9	8
All Other \| Retail \| Commercial and industrial (C&I)
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	7	9
All Other \| Retail \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1	1
All Other \| Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
All Other \| Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
All Other \| Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 0	$ 0