UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q



þ	Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended December 31, ~~2016~~2017



¨	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from _____ to _____



Commission File Number	Exact name of registrant as specified in its ~~charter and~~charter; address of principal ~~office address and~~ executive offices; registrant's telephone number, including area code	State or Other Jurisdiction of Incorporation	I.R.S. Employer Identification No.
1-16163	WGL Holdings, Inc. 101 Constitution Ave., N.W. Washington, D.C. 20080 (703) 750-2000	Virginia	52-2210912
0-49807	Washington Gas Light Company 101 Constitution Ave., N.W. Washington, D.C. 20080 (703) 750-4440	District of Columbia and Virginia	53-0162882

Indicate by check mark whether each 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 registrants were required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether each 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 of 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). Yes þ No ¨

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

WGL Holdings, Inc.:



Large accelerated filer þ	Accelerated filer ¨	Non-accelerated filer ¨	Smaller reporting company ¨
	(Do not check if a 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. ¨

Washington Gas Light Company:



Large accelerated filer ¨	Accelerated filer ¨	Non-accelerated filer þ	Smaller reporting company ¨
	(Do not check if a 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 each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No þ

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

WGL Holdings, Inc. common stock, no par value, outstanding as of January 31, ~~2017: 51,219,000~~2018: 51,359,182 shares.

Washington Gas Light Company common stock, $1 par value, outstanding as of January 31, 2018: 46,479,536 shares

All of the outstanding shares of common stock ($1 par value) of Washington Gas Light Company were held by WGL Holdings, Inc. as of January 31, ~~2017.~~2018.

WGL Holdings, Inc.

Washington Gas Light Company

For the Quarter Ended December 31, ~~2016~~2017

Table of Contents



PART I. Financial Information

Item 1. Financial Statements (Unaudited)
WGL Holdings, Inc.
Condensed Consolidated Balance Sheets	4
Condensed Consolidated Statements of Income	5
Condensed Consolidated Statements of Comprehensive Income	6
Condensed Consolidated Statements of Cash Flows	7

Washington Gas Light Company
Condensed Balance Sheets	8
Condensed Statements of Income	9
Condensed Statements of Comprehensive Income	10
Condensed Statements of Cash Flows	11

Notes to Condensed Consolidated Financial Statements
WGL Holdings, Inc. and Washington Gas Light Company — Combined	12

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	4449
WGL Holdings, Inc.	4753
Washington Gas Light Company	6976

Item 3. Quantitative and Qualitative Disclosures ~~about~~About Market Risk	7280

Item 4. Controls and Procedures	7280

PART II. Other Information

Item 1. Legal Proceedings	7381

Item 1A. Risk Factors	7382

Item 4. Mine Safety Disclosures	7482

Item 6. Exhibits	7583

Signature	7684

(i)

WGL Holdings, Inc.

Washington Gas Light Company

INTRODUCTION

FILING FORMAT

This Quarterly Report on Form 10-Q is a combined report being filed by two separate registrants: WGL Holdings, Inc. (WGL) and Washington Gas Light Company (Washington Gas). Except where the content clearly indicates otherwise, any reference in the report to “WGL,” “we,” “us” or “our” is to the holding company or WGL and all of its subsidiaries, including Washington Gas, which is a wholly owned subsidiary of WGL.

Part I—Financial information in this Quarterly Report on Form 10-Q includes separate financial statements (i.e. balance sheets, statements of income and comprehensive income and statements of cash flows) for each of WGL and Washington Gas. The Notes to Condensed Consolidated Financial Statements are presented on a combined basis for both WGL and Washington ~~Gas.~~Gas together. The Management’s Discussion and Analysis of Financial Condition and Results of Operations (Management’s Discussion) included under Item 2 is divided into two major sections for WGL and Washington Gas.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS

Certain matters discussed in this report, excluding historical information, include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 with respect to the outlook for earnings, dividends, revenues and other future financial business performance, or strategies, financing plans, AltaGas Ltd.'s (AltaGas) proposed acquisition of us and other expectations. Forward-looking statements are typically identified by words such as, but not limited to, “estimates,” “expects,” “anticipates,” “intends,” “believes,” “plans” and similar expressions, or future or conditional terms such as “will,” “should,” “would” and “could.” Forward-looking statements speak only as of ~~today,~~the filing date of this report, and the registrants assume no duty to update them. Factors that could cause actual results to differ materially from forward-looking statements or historical performance include those discussed in Item 1A. Risk Factors in the combined Annual Report on Form 10-K for WGL and Washington Gas for the fiscal year ended September 30, ~~2016,~~2017, in Part II, Item 1A, Risk Factors in this quarterly ~~update~~report on Form 10-Q and in our other filings with the Securities and Exchange Commission, and may include, but are not limited to the following:

the occurrence of any event, change or other circumstances that could give rise to the termination of the Agreement and Plan of Merger ~~(merger agreement)~~ among WGL, AltaGas ~~Ltd. (AltaGas)~~ and Wrangler, Inc. (Merger Agreement);

~~WGL's shareholders may not approve~~ the ~~merger agreement;~~inability of WGL or AltaGas to satisfy conditions to the closing of the merger;

the required regulatory approvals ~~and other clearances~~ for the merger may not be received, may not be received in a timely manner, or may be received subject to imposed conditions or restrictions that cause a failure of a closing condition to the merger or that could have a detrimental impact on the combined company following completion of the merger;

the effect of the announcement of the merger on the ability of WGL to retain customers and retain and hire key personnel;

the effect of the announcement of the merger on the ability of WGL to maintain relationships with its suppliers;

potential litigation in connection with the merger;

the incurrence of significant costs for advisory services in connection with the merger;

the impact of the terms and conditions of the ~~merger agreement~~Merger Agreement on WGL’s interim operations and its ability to make significant changes to its business or pursue otherwise attractive business opportunities without the consent of AltaGas;

the level and rate at which we incur costs and expenses, and the extent to which we are allowed to recover from customers, through the regulatory process, such costs and expenses relating to constructing, operating and maintaining Washington Gas’ distribution system;

the availability of natural gas and electricity supply, interstate pipeline transportation and storage capacity;

the outcome of new and existing matters before courts, regulators, government agencies or arbitrators, including those relating to construction of the Constitution Pipeline, disputes relating to our purchase of natural gas under the Antero gas supply contracts, and the August 2016 explosion and fire at an apartment complex in Silver Spring, Maryland;

factors beyond our control that affect the ability of natural gas producers, pipeline gatherers and natural gas processors to deliver natural gas into interstate pipelines for delivery to the entrance points of Washington Gas' distribution system;

security breaches of our information technology infrastructure, including cyber attacks and cyber-terrorism;

(ii)

WGL Holdings, Inc.

Washington Gas Light Company

leaks, mechanical problems, incidents or other operational issues in our natural gas distribution system, including the effectiveness of our efforts to mitigate the effects of receiving low-HHC natural gas;

changes and developments in economic, competitive, political and regulatory conditions;

unusual weather conditions and changes in natural gas consumption patterns;

~~(ii)~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

changes in energy commodity market conditions, including the relative prices of alternative forms of energy such as electricity, fuel oil and propane;

changes in the value of derivative contracts and the availability of suitable derivative counterparties;

changes in our credit ratings, disruptions in credit market and equity capital market conditions or other factors that may affect our access to and cost of capital;

factors affecting the timing of construction and the effective operation of pipelines in which we have invested;

the ~~credit worthiness~~credit-worthiness of customers; suppliers and derivatives counterparties;

changes in laws and regulations, including tax, environmental, pipeline integrity and employment laws and regulations;

legislative, regulatory and judicial mandates or decisions affecting our business ~~operations;~~operations, including interpretations of the Tax Cuts and Jobs Act (the Tax Act);

the timing and success of business and product development efforts and technological improvements;

the level of demand from government agencies and the private sector for commercial energy systems, and delays in federal government budget appropriations;

the pace of deregulation of energy markets and the availability of other competitive alternatives to our products and services;

changes in accounting principles;

our ability to manage the outsourcing of several business ~~processes, including the transition of certain processes to new third party vendors;~~processes;

strikes or work stoppages by unionized employees;

acts of nature and catastrophic events, including terrorist ~~acts~~acts; and

decisions made by management and co-investors in non-controlled investees.

All such factors are difficult to predict accurately and are generally beyond the direct control of the registrants. Readers are urged to use care and consider the risks, uncertainties and other factors that could affect our business as described in this Quarterly Report on Form 10-Q.

(iii)

WGL Holdings, Inc.

Condensed Consolidated Balance Sheets (Unaudited)

Part I—Financial Information

Item 1—Financial Statements


(In thousands)	December 31, 2016			September 30, 2016			December 31, 2017			September 30, 2017
ASSETS
Property, Plant and Equipment
At original cost	$	5,664,221		$	5,542,916		$	6,217,878		$	6,143,841
Accumulated depreciation and amortization	(1,440,438		)	(1,415,679		)	(1,538,998		)	(1,513,790		)
Net property, plant and equipment	4,223,783			4,127,237			4,678,880			4,630,051
Current Assets
Cash and cash equivalents	12,884			5,573			64,110			8,524
Receivables
Accounts receivable	441,654			329,989			519,980			398,149
Gas costs and other regulatory assets	24,164			15,294			17,663			21,705
Unbilled revenues	251,768			173,076			278,256			165,483
Allowance for doubtful accounts	(26,469		)	(27,339		)	(32,451		)	(32,025		)
Net receivables	691,117			491,020			783,448			553,312
Materials and supplies—principally at average cost	17,960			18,414			20,456			20,172
Storage gas	208,841			207,132			206,978			243,984
Prepaid taxes	41,298			33,397			38,824			31,549
Other prepayments	62,500			42,626			74,612			86,465
Derivatives	20,721			18,510			17,665			15,327
Other	39,889			26,802			40,174			26,556
Total current assets	1,095,210			843,474			1,246,267			985,889
Deferred Charges and Other Assets
Regulatory assets
Gas costs	198,349			179,856			117,474			90,136
Pension and other post-retirement benefits	215,854			223,242			132,837			139,499
Other	99,934			98,592			117,962			104,596
Prepaid post-retirement benefits	185,918			180,686			234,982			231,577
Derivatives	46,748			55,020			32,168			38,389
Investments in direct financing leases, capital leases	26,560			29,780
Investments in unconsolidated affiliates	374,065			303,491			489,354			394,201
Other	8,969			8,072			12,650			11,671
Total deferred charges and other assets	1,156,397			1,078,739			1,137,427			1,010,069
Total Assets	$	6,475,390		$	6,049,450		$	7,062,574		$	6,626,009
CAPITALIZATION AND LIABILITIES
Capitalization
WGL Holdings common shareholders’ equity	$	1,439,465		$	1,375,561		$	1,609,607		$	1,502,690
Non-controlling interest	5,205			409			3,210			6,851
Washington Gas Light Company preferred stock	28,173			28,173			28,173			28,173
Total equity	1,472,843			1,404,143			1,640,990			1,537,714
Long-term debt	1,435,247			1,435,045			1,679,893			1,430,861
Total capitalization	2,908,090			2,839,188			3,320,883			2,968,575
Current Liabilities
Current maturities of long-term debt							300,000			250,000
Notes payable and project financing	634,392			331,385			558,700			559,844
Accounts payable and other accrued liabilities	447,467			405,351			431,327			423,824
Wages payable	21,461			17,908			22,146			18,096
Accrued interest	19,524			7,645			17,669			7,806
Dividends declared	25,295			25,283			26,520			26,452
Customer deposits and advance payments	73,773			86,384			55,158			65,841
Gas costs and other regulatory liabilities	57,243			12,973			57,275			22,814
Accrued taxes	26,821			15,672			35,676			17,657
Derivatives	66,771			82,334			35,021			43,990
Other	49,293			41,991			50,002			52,664
Total current liabilities	1,422,040			1,026,926			1,589,494			1,488,988
Deferred Credits
Unamortized investment tax credits	168,086			163,493			153,502			155,007
Deferred income taxes	784,001			726,763			413,065			868,067
Accrued pensions and benefits	231,198			228,377			184,293			181,552
Asset retirement obligations	205,447			203,105			300,130			296,810
Regulatory liabilities
Accrued asset removal costs	302,296			310,788			286,234			292,173
Other post-retirement benefits	110,368			113,875			130,882			135,035
Other	7,231			14,450
Other—principally deferred taxes							452,091			9,403
Derivatives	224,014			304,198			128,885			122,607
Other	112,619			118,287			103,115			107,792
Total deferred credits	2,145,260			2,183,336			2,152,197			2,168,446
Commitments and Contingencies (Note 13)
Total Capitalization and Liabilities	$	6,475,390		$	6,049,450		$	7,062,574		$	6,626,009

The accompanying notes are an integral part of these statements.

WGL Holdings, Inc.

Condensed Consolidated Statements of Income (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)


	Three Months Ended December 31,					Three Months Ended December 31,
(In thousands, except per share data)	2016			2015		2017			2016
OPERATING REVENUES
Utility	$	327,063		$	288,153	$	374,990		$	327,063
Non-utility	282,424			325,231		277,450			282,424
Total Operating Revenues	609,487			613,384		652,440			609,487
OPERATING EXPENSES
Utility cost of gas	75,500			50,025		122,273			75,500
Non-utility cost of energy-related sales	252,886			282,487		225,502			252,886
Operation and maintenance	100,717			95,419		102,226			100,717
Depreciation and amortization	35,283			31,412		40,985			35,283
General taxes and other assessments	40,388			36,532		44,887			40,388
Total Operating Expenses	504,774			495,875		535,873			504,774
OPERATING INCOME	104,713			117,509		116,567			104,713
Equity in earnings of unconsolidated affiliates	265			1,263		5,892			265
Other income — net	478			979
Other income (expenses) — net						(780		)	478
Interest expense	16,235			12,760		20,197			16,235
INCOME BEFORE INCOME TAXES	89,221			106,991		101,482			89,221
INCOME TAX EXPENSE	33,454			38,490
INCOME TAX (BENEFIT) EXPENSE						(31,110		)	33,454
NET INCOME	$	55,767		$	68,501	$	132,592		$	55,767
Non-controlling interest	(2,535		)	—		(5,778		)	(2,535		)
Dividends on Washington Gas Light Company preferred stock	330			330		330			330
NET INCOME APPLICABLE TO COMMON STOCK	$	57,972		$	68,171	$	138,040		$	57,972
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	51,172			49,807		51,319			51,172
Diluted	51,445			50,030		51,549			51,445
EARNINGS PER AVERAGE COMMON SHARE
Basic	$	1.13		$	1.37	$	2.69		$	1.13
Diluted	$	1.13		$	1.36	$	2.68		$	1.13
DIVIDENDS DECLARED PER COMMON SHARE	$	0.4875		$	0.4625	$	0.5100		$	0.4875

The accompanying notes are an integral part of these statements.

WGL Holdings, Inc.

Condensed Consolidated Statements of Comprehensive Income (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)


	Three Months Ended December 31,						Three Months Ended December 31,
(In thousands)	2016			2015			2017			2016
NET INCOME	$	55,767		$	68,501		$	132,592		$	55,767
OTHER COMPREHENSIVE INCOME, BEFORE INCOME TAXES:
Qualified cash flow hedging instruments	49,455			1,084			52			49,455
Pension and other post-retirement benefit plans
Change in net prior service credit	(217		)	(214		)	(274		)	(217		)
Change in actuarial net loss	588			419			527			588
Total other comprehensive income before taxes	$	49,826		$	1,289		$	305		$	49,826
INCOME TAX EXPENSE RELATED TO OTHER COMPREHENSIVE INCOME	20,413			531			61			20,413
OTHER COMPREHENSIVE INCOME	$	29,413		$	758		$	244		$	29,413
COMPREHENSIVE INCOME	$	85,180		$	69,259		$	132,836		$	85,180
Non-controlling interest	(2,535		)	—			(5,778		)	(2,535		)
Dividends on Washington Gas Light Company preferred stock	330			330			330			330
COMPREHENSIVE INCOME ATTRIBUTABLE TO WGL HOLDINGS	$	87,385		$	68,929		$	138,284		$	87,385

The accompanying notes are an integral part of these statements.

WGL Holdings, Inc.

Condensed Consolidated Statements of Cash Flows (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)

Three Months Ended December 31,
(In thousands) 2016 2015
OPERATING ACTIVITIES
Net income $ 55,767
$ 68,501
ADJUSTMENTS TO RECONCILE NET INCOME TO NET CASH USED IN OPERATING ACTIVITIES
Depreciation and amortization 35,283
31,412
Amortization of:
Other regulatory assets and liabilities—net 823
325
Debt related costs 445
316
Deferred income taxes—net 34,852
78,038
Accrued/deferred pension and other post-retirement benefit cost 5,424
4,944
Earnings in equity interest 265
1,263
Compensation expense related to stock-based awards 4,912
3,549
Provision for doubtful accounts 2,704
2,533
Other non-cash credits—net 2,105
(883 )
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable and unbilled revenues—net (203,098 ) (77,780 )
Gas costs and other regulatory assets/liabilities—net 35,400
(13,447 )
Storage gas (1,709 ) (1,526 )
Prepaid taxes (7,901 ) (18,807 )
Other prepayments (19,874 ) (26,065 )
Accounts payable and other accrued liabilities 72,584
(11,416 )
Customer deposits and advance payments (12,611 ) 5,899
Unamortized investment tax credits 4,593
12,543
Accrued taxes 11,149
6,641
Accrued interest 11,879
5,492
Other current assets (12,633 ) (25,772 )
Other current liabilities (26,170 ) (7,369 )
Deferred gas costs—net (18,493 ) 17,874
Deferred assets—other (7,878 ) (12,097 )
Deferred liabilities—other (22,453 ) (49,681 )
Derivatives (40,231 ) (52,490 )
Other—net 771
(82 )
Net Cash Used in Operating Activities (94,095 ) (58,085 )
FINANCING ACTIVITIES
Common stock issued 251
83
Debt issuance costs (375 ) (135 )
Notes payable issued —net 324,001
195,875
Contributions from non-controlling interest 7,331
—
Project financing 8,877
—
Dividends on common stock and preferred stock (23,921 ) (23,377 )
Other financing activities—net 2,305
2,006
Net Cash Provided by Financing Activities 318,469
174,452
INVESTING ACTIVITIES
Capital expenditures (excluding AFUDC) (155,758 ) (101,013 )
Investments in non-utility interests (62,007 ) (8,374 )
Distributions and receipts from non-utility interests 1,565
2,065
Loans to external parties (863 ) —
Net Cash Used in Investing Activities (217,063 ) (107,322 )
INCREASE IN CASH AND CASH EQUIVALENTS 7,311
9,045
Cash and Cash Equivalents at Beginning of Year 5,573
6,733
Cash and Cash Equivalents at End of Period $ 12,884
$ 15,778
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Income taxes paid (refunded)—net $ (4,678 ) $ 1,615
Interest paid $ 4,156
$ 7,190
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Project financing activities $ (29,871 ) $ 1,356
Capital expenditure accruals included in accounts payable and other accrued liabilities $ 55,602
$ 39,140
Dividends paid in common stock $ 1,362
$ —
Stock issued related to compensation $ 6,564
$ 5,947
Transfer of investments to property, plant and equipment $ 3,959
$ —
Transfer of accounts receivable to investments $ 10,031
$ —



	Three Months Ended December 31,
(In thousands)	2017			2016
OPERATING ACTIVITIES
Net income	$	132,592		$	55,767
ADJUSTMENTS TO RECONCILE NET INCOME TO NET CASH PROVIDED BY OPERATING ACTIVITIES
Depreciation and amortization	40,985			35,283
Amortization of:
Other regulatory assets and liabilities—net	1,634			823
Debt related costs	550			445
Deferred income taxes	(29,264		)	34,852
Dividends received from equity method investments	5,628			—
Accrued/deferred pension and other post-retirement benefit cost	2,393			5,424
Earnings in equity interest	(5,892		)	265
Compensation expense related to stock-based awards	5,802			4,912
Provision for doubtful accounts	3,781			2,704
Unrealized (gain) loss on derivative contracts	12,524			(30,339		)
Amortization of investment tax credits	(1,845		)	(1,396		)
Other non-cash credits—net	(197		)	2,105
Changes in operating assets and liabilities (Note 16)	(175,402		)	(201,340		)
Net Cash Used In Operating Activities	(6,711		)	(90,495		)
FINANCING ACTIVITIES
Common stock issued	—			251
Long-term debt issued	300,000			—
Debt issuance costs	(1,482		)	(375		)
Notes payable issued —net	(1,144		)	324,001
Contributions from non-controlling interest	1,659			7,331
Distributions to non-controlling interest	(136		)	—
Project financing	—			8,877
Dividends on common stock and preferred stock	(26,520		)	(23,921		)
Other financing activities—net	(6,558		)	(1,295		)
Net Cash Provided by Financing Activities	265,819			314,869
INVESTING ACTIVITIES
Capital expenditures (excluding Allowance for Funds Used During Construction)	(99,054		)	(155,758		)
Investments in non-utility interests	(104,468		)	(62,007		)
Distributions and receipts from non-utility interests	—			1,565
Loans to external parties	—			(863		)
Net Cash Used in Investing Activities	(203,522		)	(217,063		)
INCREASE IN CASH AND CASH EQUIVALENTS	55,586			7,311
Cash and Cash Equivalents at Beginning of Year	8,524			5,573
Cash and Cash Equivalents at End of Period	$	64,110		$	12,884
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION (Note 16)

The accompanying notes are an integral part of these statements.

Washington Gas Light Company

Condensed Balance Sheets (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)


(In thousands)	December 31, 2016			September 30, 2016			December 31, 2017			September 30, 2017
ASSETS
Property, Plant and Equipment
At original cost	$	4,969,997		$	4,874,905		$	5,358,064		$	5,310,337
Accumulated depreciation and amortization	(1,368,282		)	(1,348,173		)	(1,440,276		)	(1,422,622		)
Net property, plant and equipment	3,601,715			3,526,732			3,917,788			3,887,715
Current Assets
Cash and cash equivalents	1			1			6,652			1
Receivables
Accounts receivable	194,537			140,457			263,001			190,740
Gas costs and other regulatory assets	24,164			15,294			17,663			21,705
Unbilled revenues	164,532			89,945			205,107			107,967
Allowance for doubtful accounts	(19,234		)	(20,220		)	(24,447		)	(23,741		)
Net receivables	363,999			225,476			461,324			296,671
Materials and supplies—principally at average cost	17,914			18,368			20,410			20,126
Storage gas	88,502			82,473			84,960			92,753
Prepaid taxes	28,760			16,826			31,899			23,350
Other prepayments	20,653			10,924			22,776			13,238
Receivables from associated companies	15,510			13,799			27,010			32,362
Derivatives	8,371			7,285			4,343			5,061
Other	66			51			120			102
Total current assets	543,776			375,203			659,494			483,664
Deferred Charges and Other Assets
Regulatory assets
Gas costs	198,349			179,856			117,474			90,136
Pension and other post-retirement benefits	214,615			221,971			132,082			138,573
Other	99,870			98,527			117,570			104,538
Prepaid post-retirement benefits	184,901			179,675			233,676			230,283
Derivatives	18,826			25,590			15,385			16,244
Other	2,893			2,001			4,459			3,561
Total deferred charges and other assets	719,454			707,620			620,646			583,335
Total Assets	$	4,864,945		$	4,609,555		$	5,197,928		$	4,954,714
CAPITALIZATION AND LIABILITIES
Capitalization
Common shareholder’s equity	$	1,147,661		$	1,113,446		$	1,295,914		$	1,164,749
Preferred stock	28,173			28,173			28,173			28,173
Long-term debt	939,125			939,015			1,084,619			1,134,461
Total capitalization	2,114,959			2,080,634			2,408,706			2,327,383
Current Liabilities
Current maturities of long-term debt							50,000			—
Notes payable and project financing	256,714			104,385			205,772			166,772
Accounts payable and other accrued liabilities	233,670			204,980			196,363			219,827
Wages payable	19,665			16,235			20,191			16,508
Accrued interest	13,392			3,758			15,593			3,967
Dividends declared	21,464			21,453			22,166			22,098
Customer deposits and advance payments	72,526			80,936			54,711			64,194
Gas costs and other regulatory liabilities	57,243			12,973			57,275			22,814
Accrued taxes	26,946			17,639			46,954			12,808
Payables to associated companies	71,917			65,770			107,597			94,844
Derivatives	51,334			58,295			24,636			30,263
Other	7,205			7,193			7,349			7,473
Total current liabilities	832,076			593,617			808,607			661,568
Deferred Credits
Unamortized investment tax credits	4,662			4,851			3,921			4,100
Deferred income taxes	798,180			763,720			463,805			888,385
Accrued pensions and benefits	229,143			226,339			182,540			179,814
Asset retirement obligations	201,438			199,377			294,939			291,871
Regulatory liabilities
Accrued asset removal costs	302,296			310,788			286,234			292,173
Other post-retirement benefits	109,690			113,169			130,056			134,181
Other	7,231			14,450
Other—principally deferred taxes							450,409			9,403
Derivatives	194,333			232,040			119,048			112,299
Other	70,937			70,570			49,663			53,537
Total deferred credits	1,917,910			1,935,304			1,980,615			1,965,763
Commitments and Contingencies (Note 13)
Total Capitalization and Liabilities	$	4,864,945		$	4,609,555		$	5,197,928		$	4,954,714

The accompanying notes are an integral part of these statements.

Washington Gas Light Company

Condensed Statements of Income (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)


	Three Months Ended December 31,						Three Months Ended December 31,
(In thousands)	2016			2015			2017			2016
OPERATING REVENUES	$	333,986		$	295,246		$	377,470		$	333,986
OPERATING EXPENSES
Utility cost of gas	82,431			57,118			124,745			82,431
Operation and maintenance	82,166			79,308			79,551			82,166
Depreciation and amortization	30,126			27,205			33,646			30,126
General taxes and other assessments	36,255			32,638			39,983			36,255
Total Operating Expenses	230,978			196,269			277,925			230,978
OPERATING INCOME	103,008			98,977			99,545			103,008
Other expense — net	(779		)	(220		)	(1,792		)	(779		)
Interest expense	12,762			10,323			14,973			12,762
INCOME BEFORE INCOME TAXES	89,467			88,434			82,780			89,467
INCOME TAX EXPENSE	34,006			33,822			24,854			34,006
NET INCOME	$	55,461		$	54,612		$	57,926		$	55,461
Dividends on Washington Gas preferred stock	330			330			330			330
NET INCOME APPLICABLE TO COMMON STOCK	$	55,131		$	54,282		$	57,596		$	55,131

The accompanying notes are an integral part of these statements.

Washington Gas Light Company

Condensed Statements of Comprehensive Income (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)


	Three Months Ended December 31,						Three Months Ended December 31,
(In thousands)	2016			2015			2017			2016
NET INCOME	$	55,461		$	54,612		$	57,926		$	55,461
OTHER COMPREHENSIVE INCOME, BEFORE INCOME TAXES:
Pension and other post-retirement benefit plans
Change in net prior service credit	(217		)	(214		)	(274		)	(217		)
Change in actuarial net loss	588			419			527			588
Total pension and other post-retirement benefit plans	$	371		$	205		$	253		$	371
INCOME TAX EXPENSE RELATED TO OTHER COMPREHENSIVE INCOME	147			81			61			147
OTHER COMPREHENSIVE INCOME	$	224		$	124		$	192		$	224
COMPREHENSIVE INCOME	$	55,685		$	54,736		$	58,118		$	55,685

The accompanying notes are an integral part of these statements.

Washington Gas Light Company

Condensed Statements of Cash Flows (Unaudited)

Part I—Financial Information

Item 1—Financial Statements (continued)

Three Months Ended December 31,
(In thousands) 2016 2015
OPERATING ACTIVITIES
Net income $ 55,461
$ 54,612
ADJUSTMENTS TO RECONCILE NET INCOME TO NET CASH USED IN OPERATING ACTIVITIES
Depreciation and amortization 30,126
27,205
Amortization of:
Other regulatory assets and liabilities—net 823
325
Debt related costs 353
293
Deferred income taxes—net 34,145
58,522
Accrued/deferred pension and other post-retirement benefit cost 5,411
5,615
Compensation expense related to stock-based awards 4,652
3,350
Provision for doubtful accounts 2,241
1,997
Other non-cash charges—net 2,447
1,494
CHANGES IN ASSETS AND LIABILITIES
Accounts receivable, unbilled revenues and receivables from associated companies—net (133,605 ) (84,105 )
Gas costs and other regulatory assets/liabilities—net 35,400
(13,447 )
Storage gas (6,029 ) 5,476
Prepaid taxes (11,934 ) (37,443 )
Other prepayments (9,729 ) (9,478 )
Accounts payable and other accrued liabilities, including payables to associated companies 39,810
4,154
Customer deposits and advance payments (8,410 ) 5,598
Accrued taxes 9,307
5,121
Accrued interest 9,634
7,779
Other current assets 439
120
Other current liabilities (33,333 ) (3,154 )
Deferred gas costs—net (18,493 ) 17,874
Deferred assets—other (6,215 ) (10,541 )
Deferred liabilities—other (16,794 ) (4,461 )
Derivatives (38,990 ) (53,635 )
Other—net 510
(10 )
Net Cash Used in Operating Activities (52,773 ) (16,739 )
FINANCING ACTIVITIES
Debt issuance costs (375 ) (135 )
Notes payable issued —net 177,000
118,475
Project financing 5,200
—
Dividends on common stock and preferred stock (21,453 ) (20,269 )
Other financing activities—net 2,248
1,949
Net Cash Provided by Financing Activities 162,620
100,020
INVESTING ACTIVITIES
Capital expenditures (excluding AFUDC) (109,847 ) (83,281 )
Net Cash Used In Investing Activities (109,847 ) (83,281 )
INCREASE IN CASH AND CASH EQUIVALENTS —
—
Cash and Cash Equivalents at Beginning of Year 1
1
Cash and Cash Equivalents at End of Period $ 1
$ 1
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Income taxes refunded — net $ (6,449 ) $ —
Interest paid $ 683
$ 4,753
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Project financing activities $ (29,871 ) $ 1,356
Capital expenditure accruals included in accounts payable and other accrued liabilities $ 40,601
$ 28,073



	Three Months Ended December 31,
(In thousands)	2017			2016
OPERATING ACTIVITIES
Net income	$	57,926		$	55,461
ADJUSTMENTS TO RECONCILE NET INCOME TO NET CASH PROVIDED BY OPERATING ACTIVITIES
Depreciation and amortization	33,646			30,126
Amortization of:
Other regulatory assets and liabilities—net	1,634			823
Debt related costs	401			353
Deferred income taxes	7,386			34,145
Accrued/deferred pension and other post-retirement benefit cost	2,398			5,411
Compensation expense related to stock-based awards	4,518			4,652
Provision for doubtful accounts	3,928			2,241
Unrealized (gain) loss on derivative contracts	1,446			(15,128		)
Amortization of investment tax credits	(179		)	—
Other non-cash charges—net	(197		)	2,447
Changes in operating assets and liabilities (Note 16)	(141,364		)	(169,830		)
Net Cash Used In Operating Activities	(28,457		)	(49,299		)
FINANCING ACTIVITIES
Capital contributions from WGL Holdings, Inc.	100,000			—
Debt issuance costs	(236		)	(375		)
Notes payable issued —net	39,000			177,000
Project financing	—			5,200
Dividends on common stock and preferred stock	(22,166		)	(21,453		)
Other financing activities—net	(6,197		)	(1,226		)
Net Cash Provided by Financing Activities	110,401			159,146
INVESTING ACTIVITIES
Capital expenditures (excluding Allowance for Funds Used During Construction)	(75,293		)	(109,847		)
Net Cash Used In Investing Activities	(75,293		)	(109,847		)
INCREASE IN CASH AND CASH EQUIVALENTS	6,651			—
Cash and Cash Equivalents at Beginning of Year	1			1
Cash and Cash Equivalents at End of Period	$	6,652		$	1
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION (Note 16)

The accompanying notes are an integral part of these statements.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

NOTE 1. ACCOUNTING POLICIES

Basis of Presentation

WGL Holdings, Inc. (WGL) is a holding company that owns all of the shares of common stock of Washington Gas Light Company (Washington Gas), a regulated natural gas utility, and all of the shares of common stock of Washington Gas Resources Corporation (Washington Gas Resources) and Hampshire Gas Company (Hampshire). Washington Gas Resources owns all of the shares of common stock of four non-utility subsidiaries that include WGL Energy Services, Inc. (WGL Energy Services), WGL Energy Systems, Inc. (WGL Energy Systems), WGL Midstream, Inc. (WGL Midstream) and WGSW, Inc. (WGSW). Except where the content clearly indicates otherwise, “WGL,” “we,” “us” or “our” refers to the holding company or the consolidated entity of WGL Holdings, Inc. and all of its subsidiaries. Unless otherwise noted, these notes apply equally to WGL and Washington Gas.

The condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Therefore, certain financial information and note disclosures accompanying annual financial statements prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) are omitted in this interim report. The interim condensed consolidated financial statements and accompanying notes should be read in conjunction with the combined Annual Report on Form 10-K for WGL and Washington Gas for the fiscal year ended September 30, ~~2016.~~2017. Due to the seasonal nature of our businesses, the results of operations for the periods presented in this report are not necessarily indicative of actual results for the full fiscal years ending September 30, ~~2017~~2018 and ~~2016,~~2017 of either WGL or Washington Gas.

The accompanying unaudited condensed financial statements for WGL and Washington Gas reflect all normal recurring adjustments that are necessary, in our opinion, to present fairly the results of operations in accordance with GAAP. On October 1, 2016, WGL and Washington Gas adopted ASU 2015-03 and ASU 2015-15. These standards require an entity to account for debt issuance costs as a deduction from the carrying amount of debt in the balance sheet and the amortization of debt issuance costs presented as interest expense, consistent with debt discounts. Prior period amounts related to other deferred charges and other assets and long-term debt in the accompanying condensed balance sheets have been reclassified to conform to the current period presentation.

For a complete description of our accounting policies, refer to Note 1 of the Notes to Condensed Consolidated Financial Statements of the combined Annual Report on Form 10-K for WGL and Washington Gas for the fiscal year ended September 30, ~~2016.~~2017.

Change in Accounting Principle andStorage Gas Valuation

~~For~~On October 1, 2017, Washington Gas and WGL Energy Services ~~storage~~implemented a voluntary change in the application of an accounting principle with respect to accounting for natural gas, propane, and odorant inventories. Washington Gas and WGL Energy Services now apply the average cost methodology under which the cost of units carried in inventory is based on the weighted average cost per unit of inventory. Prior to this change, Washington Gas and WGL Energy Services applied the First-in First-out (FIFO) methodology of accounting for inventory under which the oldest inventory items were recorded as being sold first.

We believe the new policy is preferable as it conforms to the method predominately used by our peers, better reflects the physical flow of inventory, conforms to the method used for certain of our other inventories, and will simplify recordkeeping requirements.

The change in accounting principle was implemented on a prospective basis, therefore, we did not retrospectively adjust any prior periods or record a cumulative effect adjustment, as discussed below.

Washington Gas implemented the change in accounting principle on a prospective basis in accordance with Accounting Standards Codification (ASC) No. 980, Regulated Operations which permits regulated entities to implement changes for financial reporting purposes in the same way those changes are ~~accounted~~implemented for ~~using~~regulatory reporting purposes when the ~~first-in, first-out method. For~~ change impacts allowable costs. WGL Energy Services implemented the change on a prospective basis as the impact on its financial statements for all periods presented, including the cumulative effect at October 1, 2017, was immaterial. The difference during the quarter between the prior FIFO method and the new average cost method was immaterial.

WGL Midstream ~~storage gas~~continues to account for its inventory ~~is accounted for~~ using the weighted average cost method. ~~Our inventory is stated at~~

On October 1, 2017, WGL adopted ASU 2015-11, Inventory (Topic 330) - Simplifying the ~~lower-of-cost or market. Interim period inventory losses attributable to lower-of-cost or market adjustments may be reversed if~~Measurement of Inventory. This standard modified the ~~market value~~previous calculation for valuing inventory. As a result of the ~~inventory is recovered by the end of the same fiscal year.~~

For the three months ended December 31, 2016, WGL and Washington Gas did not record any lower-of-cost or market adjustments. For the three months ended December 31, 2015, WGL recorded a decrease to non-utility operating revenues due to a lower-of-cost or market adjustment of $1.9 million and Washington Gas did not record any lower-of-cost market adjustment.new standard, beginning October 1, 2017,

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

our inventory balances are stated at the lower-of-cost or net realizable value. Prior to October 1, 2017, our inventory balances were stated at the lower-of-cost or market. Interim period inventory losses attributable to lower-of-cost or net realizable value adjustments may be reversed if the net realizable value of the inventory is recovered by the end of the same fiscal year.

For more information see ASU 2015-11 in the accounting standards adopted in fiscal year 2018 table below. For the three months ended December 31, 2017, WGL and Washington Gas did not record any lower-of-cost or net realizable value adjustments. For the three months ended December 31, 2016, we did not record any lower-of-cost or market adjustments.



ACCOUNTING STANDARDS ADOPTED IN FISCAL YEAR ~~2017~~2018
Standard	Description	Date of adoption	Effect on the financial statements or other significant matters
ASU ~~2015-03 and ASU 2015-15, Interest - Imputation of Interest (Subtopic 835-30)~~2016-09, Compensation—Stock Compensation (Topic 718): ~~Simplifying the Presentation of Debt Issuance Cost and Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements~~	~~The standard requires an entity~~Improvements to present debt issuance costs in the balance sheet as a direct deduction of the debt liability and the amortization of debt issuance costs be presented as interest expense in a manner consistent with its accounting treatment of debt discounts. The standard requires retrospective application. An entity can defer and present debt issuance costs related to line-of-credit arrangements as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. ~~The new guidance does not change the recognition and measurement guidance for debt issuance costs.~~Employee Share-Based Payment Accounting	~~October 1, 2016~~	~~Implementation~~ This standard simplifies several aspects of ~~these standards resulted in a reduction of other deferred assets~~the accounting for share-based payment transactions, including accounting for income taxes, forfeitures, statutory tax withholding requirements and ~~long-term debt in our Consolidated Balance Sheets. The amounts that were reclassified at September 30, 2016 for WGL and Washington Gas were $9.3 million and $6.8 million, respectively.~~
~~ASU 2015-02 and ASU 2016-17, Consolidation (Topic 810): Amendments to the Consolidation Analysis and Interests Held through Related Parties that are Under Common Control~~	The standards changed the analysis to be performed in determining whether certain types of legal entities should be consolidated, specifically the analysis of limited partnerships and similar entities, fee arrangements and related party relationships. The standard permits prospective or retrospective application for different parts. ~~The consolidation guidance was also amended as to how a reporting entity, that is the single decision maker of a VIE, should treat indirect interests~~classification in the ~~entity held through related parties that are under common control with the reporting entity, when determining whether it is the primary beneficiary~~statement of ~~that VIE.~~cash flows.	October 1, ~~2016~~2017	~~The amendments~~ Forfeitures - WGL has elected to continue to estimate forfeitures for its share-based payment awards rather than account for forfeitures when they occur. Income Taxes - On October 1, 2017, WGL and Washington Gas recorded $4.3 million and $4.2 million, respectively, on a modified retrospective basis, as a cumulative effect adjustment to retained earnings. For the ~~consolidation guidance under these standards were applied~~three months ended December 31, 2017, WGL and ~~did not have an impact~~Washington Gas recorded $3.4 million and $3.2 million, respectively, to current tax expense for excess tax benefits related to performance shares that vested in the quarter. Cash Flows - WGL and Washington Gas reclassified $3.6 million and $3.5 million, respectively, retroactively on the ~~financial statements.~~statement of cash flows for the three months ended December 31, 2016 from operating to financing activities related to shares withheld to pay for employee taxes. Statutory Tax Withholding - No changes were made.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



ASU ~~2016-09, Compensation—Stock~~2017-07, Compensation - Retirement Benefits (Topic ~~718)~~715): ~~Improvements to Employee Share-Based Payment Accounting~~Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	This standard ~~simplifies several aspects~~requires entities to report the service cost component in the same financial statement line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are to be presented separately from service cost and outside of operating income. In addition, only the ~~accounting~~service cost component of net benefit cost is eligible for ~~share-based payment transactions, including accounting for income taxes, forfeitures,~~capitalization. Changes to the presentation of service costs and ~~statutory tax withholding requirements.~~other components of net benefit cost should be applied retrospectively. Changes in capitalization practices should be implemented prospectively.	October 1, ~~2017~~2018	We are ~~in the process of~~currently evaluating the ~~impact the adoption~~interaction of this standard with the various regulatory provisions concerning pensions and post-retirement benefit costs. We anticipate that the change in capitalization of retirement benefits will not have a material impact on ~~our~~WGL or Washington Gas' financial statements.
ASU 2016-15, Statement of Cash Flows (Topic 230)—Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force)	This update provides guidance on the classification of certain cash receipts and payments in the statement of cash flows.	October 1, ~~2018~~2018*	We are in the process of evaluating the impact the adoption of this standard will have on our financial statements. We do not anticipate that adoption of this standard will have a material effect on WGL or Washington Gas' financial statements.
ASU 2014-09, Revenue from Contracts with Customers (Topic 606), including subsequent ASUs clarifying the guidance.	ASU 2014-09 establishes a comprehensive revenue recognition model clarifying the method used to determine the timing and requirements for revenue recognition from contracts with customers. The disclosure requirements under the new standard will enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.	October 1, 2018	~~We are in the process of~~ An implementation team is currently evaluating all revenue streams and reviewing contracts with customers, as well as, related financial statement disclosures to determine the impact the adoption of this standard will have on our financial statements. WGL is also monitoring final conclusions for industry specific implementation issues that could impact the timing of revenue recognition for our regulated utility tariff based sales, including the evaluation of collectability from customers if a utility has regulatory mechanisms to help assure recovery of uncollected accounts from ratepayers and accounting for contributions in aid of construction (CIAC). WGL will adopt using the modified retrospective approach.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



ASU 2016-01, Financial Instruments (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities	The new standard amends certain disclosure requirements associated with the fair value of financial instruments, and significantly revises an entity’s accounting related to the classification and measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities measured at fair value.	October 1, ~~2018~~2018*	We performed a preliminary evaluation and the adoption of this standard will primarily impact the disclosure of our financial ~~instruments.~~instruments in our Fair Value Measurements Footnote.
ASU 2016-02, Leases (Topic 842)	This standard requires recognition of a right-to-use asset and lease liability on the statement of financial position and disclosure of key information about leasing arrangements. The standard requires application using a modified retrospective approach.	October 1, ~~2019~~2019*	We are in the process of evaluating the impact the adoption of this standard will have on our financial statements. ~~We may elect early adoption.~~
ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments	For credit losses on financial instruments, this standard changes the current incurred loss impairment methodology to an expected loss methodology and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates.	October 1, ~~2020~~2020*	We are in the process of evaluating the impact the adoption of this standard will have on our financial statements.
ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted improvements to Accounting for Hedging Activities	The new standard amends the hedge accounting and recognition requirements by expanding an entity's ability to hedge non-financial and financial risk components and reduce the complexity in fair value hedges of interest rate risk. Additionally, this standard eliminates the requirement to separately measure and disclose the ineffective portion of the hedge with the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item.	October 1, 2020*	We are in the process of evaluating the impact the adoption of this standard will have on our financial statements.

*Subject to acceleration if the proposed merger with AltaGas is consummated due to the difference in fiscal year end between AltaGas and WGL.

NOTE 2. ACCOUNTS PAYABLE AND OTHER ACCRUED LIABILITIES

The tables below provide details for the amounts included in “Accounts payable and other accrued liabilities” on the balance sheets for both WGL and Washington Gas.

WGL Holdings, Inc.
(In millions) December 31, 2016 September 30, 2016
Accounts payable—trade $ 397.8
$ 353.0
Employee benefits and payroll accruals 22.2
34.4
Other accrued liabilities 27.5
18.0
Total $ 447.5
$ 405.4

Washington Gas Light Company
(In millions) December 31, 2016
September 30, 2016
Accounts payable—trade $ 198.7
$ 161.0
Employee benefits and payroll accruals 21.2
32.2
Other accrued liabilities 13.8
11.8
Total $ 233.7
$ 205.0

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



WGL Holdings, Inc.
(In millions)	December 31, 2017		September 30, 2017
Accounts payable—trade	$	383.7	$	361.6
Employee benefits and payroll accruals	21.2		35.0
Other accrued liabilities	26.4		27.2
Total	$	431.3	$	423.8



Washington Gas Light Company
(In millions)	December 31, 2017		September 30, 2017
Accounts payable—trade	$	163.5	$	174.9
Employee benefits and payroll accruals	20.1		32.4
Other accrued liabilities	12.8		12.5
Total	$	196.4	$	219.8

NOTE 3. SHORT-TERM DEBT

WGL and Washington Gas satisfy their short-term financing requirements through the sale of commercial paper, financing arrangements with third-party lenders, or through bank borrowings. Due to the seasonal nature of the regulated utility and retail energy-marketing segments, short-term financing requirements can vary significantly during the year. Revolving credit agreements are maintained to support outstanding commercial paper and to permit short-term borrowing flexibility. The policy of each of WGL and Washington Gas is to maintain bank credit facilities in amounts equal to or greater than ~~the~~their expected maximum commercial paper position. The following is a summary of committed credit available at December 31, ~~2016~~2017 and September 30, ~~2016.~~2017.


Committed Credit Available ($ In millions)	Committed Credit Available ($ In millions)									Committed Credit Available ($ In millions)
December 31, 2016	WGL^(b)			Washington Gas			Total Consolidated
December 31, 2017										WGL^(b)			Washington Gas			Total Consolidated
Committed credit agreements
Unsecured revolving credit facility, expires December 19, 2019^(a)	$	450.0		$	350.0		$	800.0		$	650.0		$	350.0		$	1,000.0
Less: Commercial Paper	374.0			219.0			593.0			(341.9		)	(162.0		)	(503.9		)
Net committed credit available	$	76.0		$	131.0		$	207.0		$	308.1		$	188.0		$	496.1
Weighted average interest rate	0.89		%	0.69		%	0.82		%	1.76		%	1.48		%	1.67		%
September 30, 2016
September 30, 2017
Committed credit agreements
Unsecured revolving credit facility, expires December 19, 2019^(a)	$	450.0		$	350.0		$	800.0		$	650.0		$	350.0		$	1,000.0
Less: Commercial Paper	227.0			42.0			269.0			(382.0		)	(123.0		)	(505.0		)
Net committed credit available	$	223.0		$	308.0		$	531.0		$	268.0		$	227.0		$	495.0
Weighted average interest rate	0.73		%	0.46		%	0.69		%	1.52		%	1.22		%	1.45		%


^(a)	~~Both WGL and~~ Washington Gas ~~have~~has the right to request extensions with the banks’ approval. ~~WGL’s revolving credit facility permits it to borrow an additional $100 million, with the banks’ approval, for a total of $550 million.~~ Washington Gas’ revolving credit facility permits it to borrow an additional $100 million, with the banks’ approval, for a total of $450 million.


^(b)	WGL includes WGL Holdings, Inc. and all subsidiaries other than Washington Gas.

At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, there were no outstanding bank loans from WGL’s or Washington Gas’ revolving credit facilities.

PROJECT FINANCING

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

on behalf of Washington Gas and an inter-company payable is recorded for work provided by WGL Energy Systems. As work is performed, Washington Gas establishes a receivable representing the government's obligation to remit principal and interest. The payable and receivable are equal to each other at the end of the construction period, but there may be timing differences in the recognition of the project related payable and receivable during the construction period. When these projects are formally ~~“accepted”~~“accepted” by the government and deemed complete, Washington Gas assigns the ownership of the receivable to the third party lender in satisfaction of the obligation and removes both the receivable and the obligation related to the financing from its financial statements. In March 2016 the SCC of VA denied Washington Gas' further participation in the third party financing arrangement but allowed existing debt arrangements to remain intact until the related obligations were satisfied. At December 31, 2017 there were two contracts remaining totaling $43.8 million on the Washington Gas balance sheet as a short-term obligation to third party lenders in "Notes payable and project financing".

In December 2016, WGL Energy Systems entered into an agreement to obtain third-party financing and receive funds directly from the ~~third party~~third-party lender during the construction period associated with the related energy management service projects. As a result, Washington Gas will no longer be liable under future ~~third party~~third-party financing arrangements, for projects entered into under the area-wide contract. The general terms of the financing agreement are the same as the prior financing arrangements between Washington Gas and the ~~third party~~third-party lender mentioned above. Washington Gas will continue to record a receivable representing the government’s obligation, and will record an inter-company payable to WGL Energy Systems for the construction work performed for the same amount.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

As of December 31, ~~2016,~~2017, WGL and Washington Gas recorded ~~$51.7~~$94.6 million and $85.4 million, respectively, in "Unbilled revenues" on the balance sheet, and ~~WGL and Washington Gas recorded $41.4~~$54.8 million and ~~$37.7~~$43.8 million, respectively, in a corresponding short-term obligation to ~~third party~~third-party lenders in "Notes payable and project financing", for energy management services projects that were not complete. As of September 30, ~~2016,~~2017, WGL and Washington Gas recorded ~~a $73.3~~$85.6 million and $78.2 million in "Unbilled revenues" on the balance sheet and $54.8 million and $43.8 million, respectively, in a ~~$62.4 million~~ corresponding short-term obligation to third party lenders in "Notes payable and project financing" for energy management services projects that were not complete. ~~WGL Energy Services did not obtain any third-party project financing on behalf of the Federal government for the fiscal year ended September 30, 2016.~~ Because these projects are financed for government agencies ~~which~~that have minimal credit risk, and with which we have previous collection experience, neither WGL nor Washington Gas recorded a corresponding reserve for bad debts related to these receivables at December 31, ~~2016~~2017 or September 30, ~~2016.~~2017.

NOTE 4. LONG-TERM DEBT

UNSECURED NOTES

WGL and Washington Gas issue long-term notes with individual terms regarding interest rates, maturities and call or put options. These notes can have maturity dates of one or more years from the date of issuance.

At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL had ~~the~~ capacity under a shelf registration statement to issue an ~~unspecified~~unlimited amount of long-term debt securities. As a result of certain covenants included in the Merger Agreement among WGL, AltaGas and Wrangler, Inc., WGL ~~is limited to the length of~~may not issue debt with a term ~~that we may issue debt.~~longer than two years. Refer to Note 1617 — ~~Subsequent Events~~Planned Merger with AltaGas Ltd. of the Notes to Condensed Consolidated Financial Statements for a discussion of the proposed merger.

At December 31, ~~2016~~2017 and September 30, ~~2016~~2017, Washington Gas had ~~the~~ capacity under a shelf registration statement to issue up to ~~$350.0~~$150.0 million of additional Medium-Term Notes (MTNs).

The following tables show ~~the~~our outstanding notes as of December 31, ~~2016~~2017 and September 30, ~~2016.~~2017.

Long-Term Debt Outstanding
($ In millions)
WGL^(a)

Washington Gas
Total Consolidated
December 31, 2016
Long-term debt ^(b)
$ 500.0
$ 946.0
$ 1,446.0
Unamortized discount (1.6 ) (0.1 ) (1.7 )
Unamortized debt expense (2.3 ) (6.8 ) (9.1 )
Total Long-Term Debt

$ 496.1
$ 939.1
$ 1,435.2
Weighted average interest rate 2.61 % 5.12 % 4.25 %
September 30, 2016
Long-term debt ^(b)
$ 500.0
$ 946.0
$ 1,446.0
Unamortized discount (1.6 ) (0.1 ) (1.7 )
Unamortized debt expense (2.4 ) (6.9 ) (9.3 )
Total Long-Term Debt

$ 496.0
$ 939.0
$ 1,435.0
Weighted average interest rate 2.50 % 5.12 % 4.21 %


^(a)	~~WGL includes WGL Holdings and all subsidiaries other than Washington Gas.~~


^(b)	~~Includes Senior Notes and term loans for WGL and both MTNs and private placement notes for Washington Gas. Represents face value including current maturities.~~

~~There were no issuances or retirements of long-term debt for WGL or Washington Gas for the three months ended December 31, 2016 and 2015.~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

~~NOTE 5. COMMON SHAREHOLDERS’ EQUITY~~

The tables below reflect the components of “Common shareholders’ equity” for WGL and “Common shareholder’s equity” for Washington Gas for the three months ended December 31, 2016 and 2015.

WGL Holdings, Inc.
Components of Common Shareholders’ Equity
(In thousands, except shares) Common Stock
Paid-In
Capital

Retained
Earnings
Accumulated Other Comprehensive Loss, Net of Taxes WGL Holdings Common Shareholders' Equity Non-controlling Interest Washington Gas Light Company Preferred Stock Total Equity
Shares Amount
Balance at
September 30, 2016
51,080,612
$ 574,496
$ 12,519
$ 827,085
$ (38,539 ) $ 1,375,561
$ 409
$ 28,173
$ 1,404,143
Net income —
—
—
57,972
—
57,972
(2,535 ) 330
55,767
Contributions from non-controlling interest —
—
—
—
—
—
7,331
—
7,331
Other
comprehensive income
—
—
—
—
29,413
29,413
—
—
29,413
Stock-based compensation^(a)
104,676
6,564
(6,567 ) (126 ) —
(129 ) —
—
(129 )
Issuance of
common stock^(b)
25,680
1,613
—
—
—
1,613
—
—
1,613
Dividends declared:

Common stock —
—
—
(24,965 ) —
(24,965 ) —
—
(24,965 )
Preferred stock —
—
—
—
—
—
—
(330 ) (330 )
Balance at December 31, 2016 51,210,968
$ 582,673
$ 5,952
$ 859,966
$ (9,126 ) $ 1,439,465
$ 5,205
$ 28,173
$ 1,472,843
Balance at September 30, 2015 49,728,662
$ 485,456
$ 14,934
$ 757,093
$ (14,236 ) $ 1,243,247
$ —
$ 28,173
$ 1,271,420
Net income —
—
—
68,171
—
68,171
—
330
68,501
Other
comprehensive income
—
—
—
—
758
758
—
—
758
Stock-based compensation^(a)
103,113
5,947
(6,016 ) (40 ) —
(109 ) —
—
(109 )
Issuance of
common stock^(b)
1,574
83
—
—
—
83
—
—
83
Dividends declared:

Common stock —
—
—
(23,048 ) —
(23,048 ) —
—
(23,048 )
Preferred stock —
—
—
—
—
—
—
(330 ) (330 )
Balance at
December 31, 2015
49,833,349
$ 491,486
$ 8,918
$ 802,176
$ (13,478 ) $ 1,289,102
$ —
$ 28,173
$ 1,317,275

~~(a) Includes dividend equivalents related to our performance shares.~~

~~(b) Includes dividend reinvestment and common stock purchase plans.~~

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Washington Gas Light Company
Components of Common Shareholder’s Equity
(In thousands, except shares) Common Stock
Paid-In
Capital

Retained
Earnings

Accumulated Other
Comprehensive Loss, Net of Taxes
Total
Shares Amount
Balance at September 30, 2016 46,479,536
$ 46,479
$ 488,135
$ 586,662
$ (7,830 ) $ 1,113,446
Net income —
—
—
55,461
—
55,461
Other comprehensive income —
—
—
—
224
224
Stock-based compensation^(a)
—
—
(6 ) —
—
(6 )
Dividends declared:
Common stock —
—
—
(21,134 ) —
(21,134 )
Preferred stock —
—
—
(330 ) —
(330 )
Balance at December 31, 2016 46,479,536
$ 46,479
$ 488,129
$ 620,659
$ (7,606 ) $ 1,147,661
Balance at September 30, 2015 46,479,536
$ 46,479
$ 483,677
$ 557,848
$ (6,712 ) $ 1,081,292
Net income —
—
—
54,612
—
54,612
Other comprehensive income —
—
—
—
124
124
Stock-based compensation^(a)
—
—
(117 ) —
—
(117 )
Dividends declared:

Common stock —
—
—
(19,933 ) —
(19,933 )
Preferred stock —
—
—
(330 ) —
(330 )
Balance at December 31, 2015 46,479,536
$ 46,479
$ 483,560
$ 592,197
$ (6,588 ) $ 1,115,648



Long-Term Debt Outstanding
($ In millions)	WGL^(a)			Washington Gas			Total Consolidated
December 31, 2017
Long-term debt ^(b)	$	850.0		$	1,146.0		$	1,996.0
Unamortized discount	(1.6		)	(3.0		)	(4.6		)
Unamortized debt expense	(3.1		)	(8.4		)	(11.5		)
Total Long-Term Debt	$	845.3		$	1,134.6		$	1,979.9
Weighted average interest rate	2.60		%	4.89		%	3.91		%
September 30, 2017
Long-term debt ^(b)	$	550.0		$	1,146.0		$	1,696.0
Unamortized discount	(1.5		)	(3.0		)	(4.5		)
Unamortized debt expense	(2.1		)	(8.5		)	(10.6		)
Total Long-Term Debt	$	546.4		$	1,134.5		$	1,680.9
Weighted average interest rate	2.81		%	4.89		%	4.21		%

^{(a) Stock-based compensation is}WGL includes WGL Holdings, Inc. and all subsidiaries other than Washington Gas.

^(b)Includes senior notes, term loans and floating rate notes for WGL and both MTNs and private placement notes for Washington Gas. Represents face value

including current maturities.

The following tables show long-term debt issuances and retirements for the three months ended December 31, 2017.



Long-Term Debt Issuances and Retirements
($ In millions)	Principal^(b)		Interest Rate			Effective Cost		Nominal Maturity Date
Three Months Ended December 31, 2017
WGL^(a)
Issuances:
11/29/2017	$	300.0	1.88	%	^(c)	2.01	%	11/29/2019
Total consolidated issuances	$	300.0

^(a)WGL includes WGL Holdings, Inc. and all subsidiaries other than Washington Gas.

^(b)Represents face amount of notes.

^(c)Floating rate per annum and reset quarterly based on terms set forth in the ~~stock awards~~prospectus supplement filed by WGL pursuant to Securities Act Rule 424 on November 27, 2017.

There were no issuances of ~~WGL that are allocated to~~long-term debt by Washington Gas ~~Light Company~~ for ~~its pro-rata share.~~the three months ended December 31, 2017 and there were no retirements of long-term debt for WGL or Washington Gas for the three months ended December 31, 2017.

19There were no issuances or retirements of long-term debt by WGL or Washington Gas for the three months ended December 31, 2016.

NOTE 5. COMPONENTS OF TOTAL EQUITY

The tables below reflect the components of “Total equity” for WGL and Washington Gas for the three months ended December 31, 2017 and 2016.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



WGL Holdings, Inc. Components of Total Equity
(In thousands, except shares)	Common Stock			Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss), Net of Taxes			WGL Holdings Common Shareholders' Equity			Non-controlling Interest			Washington Gas Light Company Preferred Stock			Total Equity
(In thousands, except shares)	Shares	Amount		Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss), Net of Taxes			WGL Holdings Common Shareholders' Equity			Non-controlling Interest			Washington Gas Light Company Preferred Stock			Total Equity
Balance at September 30, 2017	51,219,000	$	582,716	$	10,149		$	915,822		$	(5,997	)	$	1,502,690		$	6,851		$	28,173		$	1,537,714
Net income (loss)	—	—		—			138,040			—			138,040			(5,778		)	330			132,592
Contributions from non-controlling interest	—	—		—			—			—			—			1,659			—			1,659
Distributions to non-controlling interest	—	—		—			—			—			—			(136		)	—			(136		)
Business combination^(a)	—	—		—			—			—			—			614			—			614
Other comprehensive income	—	—		—			—			244			244			—			—			244
Stock-based compensation^(b)	133,540	11,251		(20,534		)	4,174			—			(5,109		)	—			—			(5,109		)
Dividends declared:
Common stock	—	—		—			(26,258		)	—			(26,258		)	—			—			(26,258		)
Preferred stock	—	—		—			—			—			—			—			(330		)	(330		)
Balance at December 31, 2017	51,352,540	$	593,967	$	(10,385	)	$	1,031,778		$	(5,753	)	$	1,609,607		$	3,210		$	28,173		$	1,640,990
Balance at September 30, 2016	51,080,612	$	574,496	$	12,519		$	827,085		$	(38,539	)	$	1,375,561		$	409		$	28,173		$	1,404,143
Net income (loss)	—	—		—			57,972			—			57,972			(2,535		)	330			55,767
Contributions from non-controlling interest	—	—		—			—			—			—			7,331			—			7,331
Other comprehensive income	—	—		—			—			29,413			29,413			—			—			29,413
Stock-based compensation^(b)	104,676	6,564		(6,567		)	(126		)	—			(129		)	—			—			(129		)
Issuance of common stock^(c)	25,680	1,613		—			—			—			1,613			—			—			1,613
Dividends declared:
Common stock	—	—		—			(24,965		)	—			(24,965		)	—			—			(24,965		)
Preferred stock	—	—		—			—			—			—			—			(330		)	(330		)
Balance at December 31, 2016	51,210,968	$	582,673	$	5,952		$	859,966		$	(9,126	)	$	1,439,465		$	5,205		$	28,173		$	1,472,843

(a) Resulted from the consolidation of SFEE. For more information, see Note 11—Other investments of the Notes to Condensed Consolidated Financial Statements.

(b) Includes dividend equivalents related to our performance shares and implementation of ASU 2016-09, see Note 1—Accounting policies of the Notes to Condensed Consolidated Financial Statements.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



Washington Gas Light Company Components of Total Equity
(In thousands, except shares)	Common Stock			Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss), Net of Taxes			Total
(In thousands, except shares)	Shares	Amount		Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss), Net of Taxes			Total
Balance at September 30, 2017	46,479,536	$	46,479	$	492,101		$	630,691		$	(4,522	)	$	1,164,749
Net income	—	—		—			57,926			—			57,926
Other comprehensive income	—	—		—			—			192			192
Stock-based compensation^(a)	—	—		(8,916		)	4,197			—			(4,719		)
Capital contributed by WGL Holdings	—	—		100,000			—			—			100,000
Dividends declared:
Common stock	—	—		—			(21,904		)	—			(21,904		)
Preferred stock	—	—		—			(330		)	—			(330		)
Balance at December 31, 2017	46,479,536	$	46,479	$	583,185		$	670,580		$	(4,330	)	$	1,295,914
Balance at September 30, 2016	46,479,536	$	46,479	$	488,135		$	586,662		$	(7,830	)	$	1,113,446
Net income	—	—		—			55,461			—			55,461
Other comprehensive income	—	—		—			—			224			224
Stock-based compensation^(a)	—	—		(6		)	—			—			(6		)
Dividends declared:
Common stock	—	—		—			(21,134		)	—			(21,134		)
Preferred stock	—	—		—			(330		)	—			(330		)
Balance at December 31, 2016	46,479,536	$	46,479	$	488,129		$	620,659		$	(7,606	)	$	1,147,661

(a) Stock-based compensation is based on the stock awards of WGL that are allocated to Washington Gas Light Company for its pro-rata share and includes implementation of ASU 2016-09, see Note 1—Accounting policies of the Notes to Condensed Consolidated Financial Statements.

NOTE 6. EARNINGS PER SHARE

Basic ~~EPS~~earnings per share (EPS) of WGL is computed by dividing net income by the weighted average number of common shares outstanding during the reported period. Diluted EPS assumes the issuance of common shares pursuant to stock-based compensation plans at the beginning of the applicable period unless the effect of such issuance would be anti-dilutive. The following table reflects the computation of our basic and diluted EPS for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

											Basic and Diluted EPS
(In thousands, except per share data)	Net Income Applicable to Common Stock		Shares	Per Share Amount		Net Income Applicable to Common Stock		Shares	Per Share Amount
Three Months Ended December 31, 2017
Basic EPS						$	138,040	51,319	$	2.69
Stock-based compensation plans						—		230
Diluted EPS						$	138,040	51,549	$	2.68
Three Months Ended December 31, 2016
Basic EPS	$	57,972	51,172	$	1.13	$	57,972	51,172	$	1.13
Stock-based compensation plans	—		273			—		273
Diluted EPS	$	57,972	51,445	$	1.13	$	57,972	51,445	$	1.13
Three Months Ended December 31, 2015
Basic EPS	$	68,171	49,807	$	1.37
Stock-based compensation plans	—		223
Diluted EPS	$	68,171	50,030	$	1.36

There were no anti-dilutive shares issued for the three months ended December 31, 2017 and 2016. For the three months December 31, 2015, 76,000 performance shares issuable pursuant to our stock-based compensation plans were not considered in the diluted share calculation due to the anti-dilutive effect of such shares.

NOTE 7. INCOME TAXES

As of December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, our uncertain tax positions were approximately ~~$43.1~~$37.5 million and ~~$42.3~~$48.1 million, respectively, primarily due to the change in tax accounting for repairs. If the amounts of unrecognized tax benefits are eventually realized, it would not materially impact the effective tax rate. It is reasonably possible that the amount of the unrecognized tax benefit with respect to some of WGL’s and Washington Gas’ uncertain tax positions will significantly increase or decrease in the next 12 months. At this time, however, an estimate of the range of reasonably possible outcomes cannot be determined.

Under ~~ASC~~Accounting Standards Codification (ASC) Topic 740, Income Taxes, Washington Gas recognizes any accrued interest associated with uncertain tax positions in interest expense and recognizes any accrued penalties associated with uncertain tax positions in other expenses in the statements of income. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, we did not have an accrual of interest expense or penalties related to uncertain tax positions.

WGL files a consolidated federal tax return and various other state returns. We are no longer subject to income tax examinations by the Internal Revenue Service for years ended prior to September 30, ~~2012, except for pending carryback refund claims.~~2014. Substantially all state income tax years in major jurisdictions are closed for years ended prior to September 30, ~~2012.~~2014.

The Tax Cuts and Jobs Act (“the Act”) was enacted on December 22, 2017. The Act substantially reforms the Tax Code. Among other things, the Act reduced the federal corporate income tax rate from a top marginal rate of 35% to a flat rate of 21%. The Act also denies bonus depreciation to regulated public utilities and imposes limitations on the amount of interest expense which may be deducted by unregulated operations. ASC Topic 740 requires companies to recognize the impacts of a change in tax law or tax rates in the period of enactment. On December 22, 2017, after enactment of the Act, the Securities and Exchange Commission ("SEC") staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of US GAAP when a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the necessary accounting. At December 31, 2017, we have not completed our accounting for the tax effects of enactment of the Act and have followed the guidance issued in SAB 118. SAB 118 expresses the Staff’s views on how ASC Topic 740 should be applied in the context of the Act. It allows entities to take a reasonable period of time to measure and recognize the effects of the Act, while requiring robust disclosures during that period. Under this guidance, registrants record the effects of all items for which the accounting is complete. To the extent a company has not completed the accounting for the effects of the Act, it may record reasonable estimates as provisional amounts. The recorded provisional amounts remain subject to adjustment within the measurement period. The measurement period begins in the reporting period that includes the Act’s enactment date and continues until such time as the accounting can be completed, not to exceed one year from the date of enactment. To the extent a company cannot reasonably estimate the effects of the Act, it should apply the provisions of the tax law that were in effect immediately prior to enactment. SAB 118 requires disclosure of any measurement period adjustments and the effect of measurement period adjustments on the effective tax rate. There are no measurement period adjustments in the first quarter of the fiscal year since the amounts recorded are our initial, provisional amounts.

Qualitative disclosures of items having no impact on provision for tax expense at December 31, 2017:

Bonus depreciation. Under the Act, regulated public utility property is generally ineligible for bonus depreciation and is depreciated under MACRS while non-utility property is generally subject to 100% bonus depreciation. We have considered all public utility property placed in service in this quarter to be ineligible for bonus depreciation. The impact of this provision in the current fiscal year is reasonably estimated to be a reduction in the amount of $88 million in tax depreciation expense based

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

on current assumptions of assets to be placed in service, when compared to the amount of deprecation expense under the previous rules, and a decrease to the forecasted taxable loss. A deferred tax amount related to this depreciation was not recorded; therefore, there is no associated deferred tax amount that was required to be re-measured.

Decrease in regulated revenues: As described above, the re-measurement of deferred tax assets and liabilities for the regulated public utility gives rise to amounts probable of being collected from or refunded to customers in future periods. In addition, the federal tax expense included in current base rates needs to be adjusted to the new federal rate of 21% effective January 1, 2018. We have reasonably estimated the reduction in current base rates (revenue) and the annual amortization of amounts resulting from the re-measurement of certain deferred tax assets and liabilities beginning January 1, 2018. In January 2018, Washington Gas filed applications for approval to reduce its distribution rates it charges customers to reflect the Tax Cuts and Jobs Act in Maryland, Virginia and the District of Columbia. These applications propose to reduce rates in these jurisdictions by a combined amount of $39.5 million annually, until base rates are reestablished in a general rate case. As described further below, the portion of this reduction in regulated revenues represented by the re-measurement of deferred tax assets and liabilities was recorded as a net regulatory liability under ASC 980, Regulated Operations. The net regulatory liability recorded is the amount we consider probable of regulatory treatment. In addition, amounts collected under other revenue mechanisms remain subject to adjustment for the decrease in the federal tax rate beginning January 1, 2018. The estimated decrease in regulated revenues is prospective only and had no impact on the accounting for the quarter ended December 31, 2017.

Items for which the accounting is not yet complete as of the end of the quarter but for which we have recorded provisional amounts at December 31, 2017 which are subject to adjustment during the measurement period:

Re-measurement of deferred tax assets and liabilities. Under ASC 740, the tax rate or rates that are used to measure deferred tax liabilities and deferred tax assets are the enacted tax rates expected to apply to taxable income in the years that the liability is expected to be settled or the asset recovered. As a result of using a 21% tax rate for our Q1 income tax provision, we did not create new amounts requiring re-measurement in Q1. Therefore, we re-measured the deferred tax balances at September 30, 2017. The re-measurement of our deferred tax assets and liabilities includes the re-measurement of our cumulative net operating loss deferred tax asset (NOL DTA) as of September 30, 2017.

The effect of the re-measurement at a federal tax rate of 21% which resulted in a net decrease in consolidated deferred tax liabilities in the amount of $476.4 million, including net tax gross-up. Of this amount, $417.3 million is attributable to the regulated utility and $59.1 million is attributable to non-utility operations. Of the amount related to utility operations, the net decrease in plant-related deferred tax liabilities was $317.8 million before tax gross-up. In addition an increase in income tax expense of, $6.2 million attributable to the regulated utility was recorded as a discrete item. Of the amount related to non-utility operations, $59.1 million was recorded as a benefit to the tax expense recorded for the period, as a discrete item as a result of the re-measurement of deferred tax liabilities. In addition, the re-measurement of the deferred tax liability associated with the Company’s uncertain tax position was a decrease in the amount of $14.8 million. A reserve for uncertain tax benefits related to prior years would generally not be re-measured if the tax exposure related to prior years. However, WGLH’s reserve for uncertain tax benefits relates solely to repair deductions for which the tax consequence of any disallowed deductions related to these timing differences is expected to be prospective only.

Consolidated deferred tax assets and liabilities were re-measured at a federal rate of 21%, based on the expectation that we will experience a taxable loss in the current fiscal year, increasing our net operating loss carryforward from the prior year. In the event taxable income is reported for the current fiscal year, we would need to apply a blended federal tax rate of 24.5% to any tax owed in the current period, before the utilization of any net operating loss carryforward to offset all or a portion of the taxable income on which federal tax would otherwise be owed. Additionally, the portion of the temporary differences settling or reversing in the first quarter of our fiscal year 2018 would be re-measured at the rate of 24.5% instead of 21%. We have recorded provisional estimates based on current information as the Company continues to work towards refinement and completion of the income tax provision for the current period. Under ASC 980, we recorded a net increase to the regulatory liability for excess deferred income taxes (EDIT) in the amount of $429.3 million including tax gross-up, and a net increase in regulatory assets in the amount of $5.8 million, for a net increase in regulatory liabilities in the amount of $423.5 million. We recorded a decrease in the regulatory asset for flow-through in the amount and $22.4 million, including tax gross-up; and a regulatory asset for the re-measurement of non-plant excess deferred taxes and the net operating loss carryforward deferred tax asset in the amount of $28.2 million, including tax gross-up, for a net increase in regulatory assets in the amount of $5.8 million.

All provisional amounts recorded for re-measurement remain subject to adjustment within the measurement period pending the preparation and analysis of additional information. In addition, we have recorded a provisional estimate but have not fully

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

completed the accounting for the tax sharing impacts of the re-measurement of the deferred tax assets and deferred tax liabilities.

Existing current or deferred tax amounts for which the income tax effects of the Tax Act have not been completed:

Accounting for the tax basis adjustment for ITC. Under prior tax law and under the Act, the basis of property must be reduced by one-half of the investment tax credits claimed thereon. Under GAAP, we gross up the book basis and amortize the investment tax credits over the book life of the associated assets. We have not yet completed the accounting for the effects of the Act on the gross-up of book basis and have not recast the amortization pending additional analysis.

NOTE 8. DERIVATIVE AND WEATHER-RELATED INSTRUMENTS

DERIVATIVE INSTRUMENTS

Regulated Utility Operations

Washington Gas enters into contracts that qualify as derivative instruments and are accounted for under ASC Topic 815. These derivative instruments are recorded at fair value on our balance sheets and Washington Gas does not currently designate any derivatives as hedges under ASC Topic 815. Washington Gas’ derivative instruments relate to: (i) Washington Gas’ asset optimization program; (ii) managing price risk associated with the purchase of gas to serve utility customers and (iii) managing interest rate risk.

Asset Optimization. Washington Gas optimizes the value of its long-term natural gas transportation and storage capacity resources during periods when these resources are not being used to physically serve utility customers. Specifically, Washington

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

Gas utilizes its transportation capacity assets to benefit from favorable natural gas prices between different geographic locations and utilizes its storage capacity assets to benefit from favorable natural gas prices between different time periods. As part of this asset optimization program, Washington Gas enters into physical and financial derivative transactions in the form of forward, futures and option contracts with the primary objective of securing operating margins that Washington Gas will ultimately realize. The derivative transactions entered into under this program are subject to mark-to-market accounting treatment under ASC 820.

Regulatory sharing mechanisms provide for the annual realized profit from these transactions to be shared between Washington Gas' shareholders and customers; therefore, changes in fair value are recorded through earnings, or as regulatory assets or liabilities to the extent that it is probable that realized gains and losses associated with these derivative transactions will be included in the rates charged to customers when they are realized. Unrealized gains and losses recorded to earnings may cause significant period-to-period volatility; this volatility does not change the operating margins that Washington Gas expects to ultimately realize from these transactions through the use of its storage and transportation capacity resources.

All physically and financially settled contracts under our asset optimization program are reported on a net basis in the statements of income in “Utility cost of gas.” Total net margins recorded to “Utility cost of gas” after sharing and management fees associated with all asset optimization transactions for the three months ended December 31, 2017 was a net gain of $5.8 million, including an unrealized loss of $1.4 million. During the three months ended December 31, 2016, ~~was~~we recorded a net gain of $24.3 million, including an unrealized gain of $15.4 ~~million. During the three months ended December 31, 2015 we recorded a net gain of $26.8 million including an unrealized gain of $19.4~~ million.

Managing Price Risk. To manage price risk associated with acquiring natural gas supply for utility customers, Washington Gas enters into physical and financial derivative transactions in the form of forward, option and other contracts, as authorized by its regulators. Any gains and losses associated with these derivatives are recorded as regulatory liabilities or assets, respectively, to reflect the rate treatment for these economic hedging activities.

Managing Interest-Rate Risk. Washington Gas may utilize derivative instruments that are designed to minimize the risk of interest-rate volatility associated with planned issuances of debt securities. Any gains and losses associated with these types of derivatives are recorded as regulatory liabilities or assets, respectively, and amortized in accordance with regulatory requirements, typically over the life of the related debt.

Non-Utility Operations

Trading Activities. WGL Midstream enters into derivative contracts for the purpose of optimizing its storage and transportation capacity as well as managing the transportation and storage assets on behalf of third parties. WGL Midstream does not designate these derivatives as hedges under ASC Topic 815; therefore, changes in the fair value of these derivative instruments are reflected in the earnings of our non-utility operations and may cause significant period-to-period volatility in earnings.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Managing Price Risk. WGL Energy Services enters into certain derivative contracts as part of its strategy to manage the price risk associated with the sale and purchase of natural gas and electricity. WGL Energy Services elects "normal purchases and normal sales" treatment for a portion of these physical contracts related to the purchase of natural gas and electricity to serve ~~our~~its customers, and, therefore, they are not subject to the fair value accounting requirements of ASC Topic 815. Derivative instruments not designated as ~~"normal~~''normal purchases and normal sales" are recorded at fair value on our consolidated balance sheets, and changes in the fair value of these derivative instruments are reflected in the earnings of our non-utility operations, which may cause significant period-to-period volatility in earnings. WGL Energy Services does not designate derivatives as hedges under ASC Topic 815.

Managing Interest-Rate Risk. WGL utilizes derivative instruments that are designed to limit the risk of interest-rate volatility associated with future debt issuances.

At December 31, ~~2016,~~2017, WGL had $250 million of 30-year forward starting interest rate swaps which ~~hedge the variability in future interest payments associated with WGL's expected issuance of 30-year debt~~settled in January 2018. Through December 2016, WGL had designated these interest rate swaps as cash flow hedges ~~with~~in anticipation of a 30-year debt issuance in January 2018, and reported the effective portion of changes in fair value ~~is reported~~ as a component of other comprehensive income (loss). As a result of certain covenants related to the proposed merger with AltaGas, in January 2017, WGL de-designated these ~~hedges. The balance~~hedges as it was no longer probable that the debt would be issued and any further changes in the fair value of the interest rate swaps were recorded in interest expense. WGL believes that the debt issuance is still reasonably possible to occur, therefore, the fair value of the swaps prior to the dedesignation in the amount of $6.4 million is recorded in accumulated other comprehensive income at December 31, ~~2016 was $6.4~~2017. In January 2018, WGL settled these swaps and realized a gain of $13.8 million ~~related~~, of which approximately $13.2 million will be recorded to ~~these hedges.~~interest expense. Refer to Note ~~16 —~~ 17~~Subsequent Events~~—Planned Merger with AltaGas Ltd. for a discussion of the proposed merger.

WGL had also elected cash flow hedge accounting for interest rate swaps, that settled with the issuance of the related debt in the first quarter of fiscal 2015. The effective portion of the gains and losses on the hedge were recorded within other

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

WGL's comprehensive income (loss) ~~and~~also includes amounts for settled hedges related to prior debt issuances, which are being amortized to income over the life of the ~~debt (through 2044).~~outstanding debt. The amortization was minimal for the three months ended December 31, ~~2016~~2017 and ~~2015.~~

2016.

Consolidated Operations

Reflected in the tables below is information for WGL as well as Washington Gas. The information for WGL includes derivative instruments for both utility and non-utility operations.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, respectively, the absolute notional amounts of our derivatives were as follows:


Absolute Notional Amounts of Open Positions on Derivative Instruments	Absolute Notional Amounts of Open Positions on Derivative Instruments			Absolute Notional Amounts of Open Positions on Derivative Instruments
Derivative transactions	WGL Holdings, Inc.		Washington Gas	WGL Holdings, Inc.		Washington Gas
December 31, 2016	Notional Amounts
December 31, 2017				Notional Amounts
Natural Gas (In millions of therms)
Asset optimization & trading	21,088.7		12,451.0	21,960.9		11,768.0
Retail sales	32.4		—	143.2		—
Other risk-management activities	1,782.1		1,298.0	1,597.4		1,181.0
Electricity (In millions of kWhs)
Retail sales	5,342.6		—	9,279.2		—
Other risk-management activities^(a)	18,244.0		—	21,569.5		—
Interest Rate Swaps (In millions of dollars)	$	250.0	—	$	250.0	—
September 30, 2016
September 30, 2017
Natural Gas (In millions of therms)
Asset optimization & trading	21,084.5		12,725.0	21,663.5		11,223.0
Retail sales	50.2		—	124.3		—
Other risk-management activities	1,789.0		1,309.0	1,546.7		1,181.0
Electricity (In millions of kWhs)
Retail sales	4,377.5		—	10,011.7		—
Other risk-management activities^(a)	21,070.4		—	22,962.1		—
Interest Rate Swaps (In millions of dollars)	$	250.0	—	$	250.0	—

(a) Comprised primarily of financial swaps, financial transmission rights and physical forward purchases.

The following tables present the balance sheet classification for all derivative instruments as of December 31, ~~2016~~2017 and September 30, ~~2016.~~

2017.



WGL Holdings, Inc. Balance Sheet Classification of Derivative Instruments^(b)
(In millions)
As of December 31, 2017	Gross Derivative Assets		Gross Derivative Liabilities			Netting of Collateral			Total^(a)
Current Assets—Derivatives	$	29.2	$	(11.5	)	$	—		$	17.7
Deferred Charges and Other Assets—Derivatives	32.3		(0.1		)	—			32.2
Current Liabilities—Derivatives	17.8		(67.2		)	14.4			(35.0		)
Deferred Credits—Derivatives	17.6		(154.1		)	7.6			(128.9		)
Total	$	96.9	$	(232.9	)	$	22.0		$	(114.0	)
As of September 30, 2017
Current Assets—Derivatives	$	26.6	$	(11.3	)	$	—		$	15.3
Deferred Charges and Other Assets—Derivatives	38.9		(0.4		)	(0.1		)	38.4
Accounts payable	1.0		—			—			1.0
Current Liabilities—Derivatives	10.9		(57.0		)	2.1			(44.0		)
Deferred Credits—Derivatives	19.2		(148.8		)	7.0			(122.6		)
Total	$	96.6	$	(217.5	)	$	9.0		$	(111.9	)

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

WGL Holdings, Inc.
Balance Sheet Classification of Derivative Instruments
(In millions) Derivative Instruments Not Designated as Hedging Instruments Derivative Instruments Designated as Hedging Instruments

As of December 31, 2016
Gross
Derivative
Assets

Gross
Derivative
Liabilities

Gross
Derivative
Assets

Gross
Derivative
Liabilities

Netting of
Collateral

Total^(a)
Current Assets—Derivatives $ 30.5
$ (9.7 ) $ —
$ —
$ (0.1 ) $ 20.7
Deferred Charges and Other Assets—Derivatives 40.9
(0.6 ) 11.9
(5.5 ) —
46.7
Current Liabilities—Derivatives 10.9
(85.9 ) —
—
8.2
(66.8 )
Deferred Credits—Derivatives 1.3
(230.7 ) —
—
5.4
(224.0 )
Total $ 83.6
$ (326.9 ) $ 11.9
$ (5.5 ) $ 13.5
$ (223.4 )
As of September 30, 2016
Current Assets—Derivatives $ 24.0
$ (5.5 ) $ —
$ —
$ —
$ 18.5
Deferred Charges and Other Assets—Derivatives 55.6
(0.6 ) —
—
—
55.0
Current Liabilities—Derivatives 18.3
(113.2 ) —
—
12.6
(82.3 )
Deferred Credits—Derivatives 6.4
(279.3 ) 0.2
(43.1 ) 11.6
(304.2 )
Total $ 104.3
$ (398.6 ) $ 0.2
$ (43.1 ) $ 24.2
$ (313.0 )


Washington Gas Light Company Balance Sheet Classification of Derivative Instruments^(b)	Washington Gas Light Company Balance Sheet Classification of Derivative Instruments^(b)											Washington Gas Light Company Balance Sheet Classification of Derivative Instruments^(b)
(In millions)
As of December 31, 2016	Gross Derivative Assets		Gross Derivative Liabilities			Netting of Collateral			Total^(a)
As of December 31, 2017												Gross Derivative Assets		Gross Derivative Liabilities			Netting of Collateral		Total^(a)
Current Assets—Derivatives	$	12.2	$	(3.7	)	$	(0.1	)	$	8.4		$	9.4	$	(5.1	)	$	—	$	4.3
Deferred Charges and Other Assets—Derivatives	18.8		—			—			18.8			15.4		—			—		15.4
Current Liabilities—Derivatives	0.4		(52.0		)	0.3			(51.3		)	—		(24.7		)	0.1		(24.6		)
Deferred Credits—Derivatives	—		(194.4		)	0.1			(194.3		)	—		(119.0		)	—		(119.0		)
Total	$	31.4	$	(250.1	)	$	0.3		$	(218.4	)	$	24.8	$	(148.8	)	$	0.1	$	(123.9	)
As of September 30, 2016
As of September 30, 2017
Current Assets—Derivatives	$	11.7	$	(4.4	)	$	—		$	7.3		$	7.5	$	(2.4	)	$	—	$	5.1
Deferred Charges and Other Assets—Derivatives	26.2		(0.6		)	—			25.6			16.5		(0.3		)	—		16.2
Current Liabilities—Derivatives	1.9		(60.2		)	—			(58.3		)	—		(30.3		)	—		(30.3		)
Deferred Credits—Derivatives	—		(232.0		)	—			(232.0		)	—		(112.3		)	—		(112.3		)
Total	$	39.8	$	(297.2	)	$	—		$	(257.4	)	$	24.0	$	(145.3	)	$	—	$	(121.3	)

(a) WGL has elected to offset the fair value of recognized derivative instruments against the right to reclaim or the obligation to return collateral for derivative instruments executed under the same master netting arrangement in accordance with ASC 815. All recognized derivative contracts and associated financial collateral subject to a master netting arrangement or similar that is eligible for offset under ASC 815 have been presented net in the balance sheet.

(b) ~~Washington Gas~~We did not have any derivative instruments outstanding that were designated as hedging instruments at December 31, ~~2016~~2017 or September 30, ~~2016.~~2017.

The following table presents all gains and losses associated with derivative instruments for the three months ended December 31, ~~2016~~2017 and ~~2015.~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

2016.

																					Gains and Losses on Derivative Instruments
(In millions)	WGL Holdings, Inc.					Washington Gas				WGL Holdings, Inc.						Washington Gas
Three Months Ended December 31,	2016			2015		2016		2015		2017			2016			2017			2016
Recorded to income
Operating revenues—non-utility	$	(36.7	)	$	25.7	$	—	$	—	$	(7.5	)	$	(36.7	)	$	—		$	—
Utility cost of gas	14.7			21.4		14.7		21.4		(2.6		)	14.7			(2.6		)	14.7
Non-utility cost of energy-related sales	31.3			7.5		—		—		22.2			31.3			—			—
Interest expense	(0.1		)	—		—		—		(0.4		)	(0.1		)	—			—
Recorded to regulatory assets
Gas costs	19.6			34.8		19.6		34.8		(5.8		)	19.6			(5.8		)	19.6
Recorded to other comprehensive income^(a)	49.5			1.1		—		—		0.1			49.5			—			—
Total	$	78.3		$	90.5	$	34.3	$	56.2	$	6.0		$	78.3		$	(8.4	)	$	34.3

~~(a) Represents the effective portion of our cash flow hedges.~~

Collateral

WGL utilizes standardized master netting agreements, which facilitate the netting of cash flows into a single net exposure for a given counterparty. As part of these master netting agreements, cash, letters of credit and ~~parental~~parent company guarantees may be required to be posted or obtained from counterparties in order to mitigate credit risk related to both derivatives and non-derivative positions. Under WGL’s offsetting policy, collateral balances are offset against the related counterparties’ derivative positions to the extent the application would not result in the over-collateralization of those derivative positions on the balance sheet.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

The table below presents collateral not offset against derivative assets and liabilities at December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, respectively.


Collateral Not Offset Against Derivative Assets and Liabilities (In millions)	Collateral Not Offset Against Derivative Assets and Liabilities (In millions)				Collateral Not Offset Against Derivative Assets and Liabilities (In millions)
December 31, 2016	Collateral deposits posted with counterparties		Cash collateral held representing an obligation
December 31, 2017					Collateral deposits posted with counterparties		Cash collateral held representing an obligation
Washington Gas	$	6.3	$	1.5	$	8.1	$	0.1
WGL Energy Services	15.1		—		30.6		—
WGL Midstream	22.9		1.2		16.8		0.4
September 30, 2016
September 30, 2017
Washington Gas	$	4.3	$	0.1	$	3.7	$	0.1
WGL Energy Services	9.1		—		23.7		—
WGL Midstream	18.5		5.4		44.4		1.6

Any collateral posted that is not offset against derivative assets and liabilities is included in “Other prepayments” in the accompanying condensed balance sheets. Collateral received and not offset against derivative assets and liabilities is included in “Customer deposits and advance payments” in the accompanying balance sheets.

Certain derivative instruments of WGL, Washington Gas, WGL Energy Services and WGL Midstream contain contract provisions that require collateral to be posted if the credit rating of Washington Gas or WGL falls below certain levels or if counterparty exposure to WGL, Washington Gas, WGL Energy Services or WGL Midstream exceeds a certain ~~level.~~level (credit-related contingent features). Due to counterparty exposure levels, at December 31, ~~2016,~~2017, WGL Energy Services posted ~~$8.6~~$11.8 million of collateral related to its derivative liabilities that contained credit-related contingent features. At September 30, ~~2016,~~2017, WGL Energy Services posted ~~$5.5~~$8.6 million of collateral related to these aforementioned derivative liabilities. At December 31, ~~2016,~~2017 and September 30, 2017, WGL was not required to post collateral related to a derivative liability that contained a credit-related contingent feature. At ~~September 30, 2016, WGL was required to post $6.5 million of collateral related to its derivative liabilities that contained credit-related contingent features. At~~ both December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Washington Gas and WGL Midstream were not required to post any collateral related to their respective derivative liabilities that contained credit-related contingent features. The following table shows the aggregate fair value of all derivative instruments with credit-related contingent features that are in a liability position, as well as the maximum amount of collateral that would be required if the most intrusive credit-risk-related contingent features underlying these agreements were triggered on December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, respectively.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~


Potential Collateral Requirements for Derivative Liabilities with Credit-Risk-Contingent Features	Potential Collateral Requirements for Derivative Liabilities with Credit-Risk-Contingent Features				Potential Collateral Requirements for Derivative Liabilities with Credit-Risk-Contingent Features
(In millions)	WGL Holdings, Inc.		Washington Gas		WGL Holdings, Inc.		Washington Gas
December 31, 2016
December 31, 2017
Derivative liabilities with credit-risk-contingent features	$	27.8	$	12.2	$	14.5	$	1.7
Maximum potential collateral requirements	17.4		12.0		$	8.1	$	1.6
September 30, 2016
September 30, 2017
Derivative liabilities with credit-risk-contingent features	$	53.9	$	11.3	$	25.0	$	2.8
Maximum potential collateral requirements	41.4		11.3		$	21.9	$	2.8

We do not enter into derivative contracts for speculative purposes.

Concentration of Credit Risk

We are exposed to credit risk from derivative instruments with wholesale counterparties, which is represented by the fair value of these instruments at the reporting date. We actively monitor and work to minimize counterparty concentration risk through various practices. At December 31, ~~2016, two counterparties each~~2017, one counterparty represented over 10% of Washington Gas’ credit exposure to wholesale derivative counterparties for a total credit risk of ~~$34.0~~$16.0 million; three counterparties each represented over 10% of WGL Energy Services’ credit exposure to wholesale counterparties for a total credit risk of ~~$3.9~~$0.9 million; and one counterparty represented over 10% of WGL Midstream’s credit exposure to wholesale counterparties for a total credit risk of ~~$20.2~~$15.9 million.

WEATHER-RELATED INSTRUMENTS

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

WGL Energy Services utilizes weather-related instruments for managing the financial effects of weather risks. These instruments cover a portion of WGL Energy Services’ estimated revenue or energy-related cost exposure to variations in heating or cooling degree days. These contracts provide for payment to WGL Energy Services of a fixed-dollar amount for every degree day over or under specific levels during the calculation period depending upon the type of contract executed. During the three months ended December 31, ~~2016~~2017 and ~~2015,~~2016, WGL Energy Services recorded a pre-tax ~~loss~~losses of ~~$1.5~~$0.8 million and ~~a pre-tax gain of $6.0~~$1.5 million, respectively, related to these instruments included in "Non-utility cost of energy related sales" in the accompanying condensed consolidated statements of income.

NOTE 9. FAIR VALUE MEASUREMENTS

Recurring Basis

We measure the fair value of our financial assets and liabilities using a combination of the income and market ~~approach~~approaches in accordance with ASC Topic 820. These financial assets and liabilities primarily consist of derivatives recorded on our balance sheet under ASC Topic 815 and short-term investments, commercial paper and long-term debt outstanding required to be disclosed at fair value. Under ASC Topic 820, fair value is defined as the exit price, representing the amount that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. To value our financial instruments, we use market data or assumptions that market participants would use, including assumptions about credit risk (both our own credit risk and the counterparty’s credit risk) and the risks inherent in the inputs to valuation.

We enter into derivative contracts in the futures and over-the-counter (OTC) wholesale and retail markets. These markets are the principal markets for the respective wholesale and retail contracts. Our relevant market participants are our existing counterparties and others who have participated in energy transactions at our delivery points. These participants have access to the same market data as WGL. ~~We value our derivative contracts based on an “in-exchange” premise, and valuations~~Valuations are generally based on pricing service data or indicative broker quotes depending on the market location. We measure the net credit exposure at the counterparty level where the right to set-off exists. The net exposure is determined using the mark-to-market exposure adjusted for collateral, letters of credit and parent guarantees. We use published default rates from Standard & Poor’s Ratings Services and Moody’s Investors Service as inputs for determining credit adjustments.

ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy under ASC Topic 820 are described below:

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

Level 1.Level 1 of the fair value hierarchy consists of assets or liabilities that are valued using observable inputs based upon unadjusted quoted prices in active markets for identical assets or liabilities at the reporting date. WGL did not have any Level 1 derivatives at December 31, ~~2016~~2017 or September 30, ~~2016.~~2017.

Level 2.Level 2 of the fair value hierarchy consists of assets or liabilities that are valued using directly or indirectly observable inputs either corroborated with market data or based on exchange traded market data. Level 2 includes fair values based on industry-standard valuation techniques that consider various assumptions: (i) quoted forward prices, including the use of mid-market pricing within a bid/ask spread; (ii) discount rates; (iii) implied volatility and (iv) other economic factors. Substantially all of these assumptions are observable throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the relevant market. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Level 2 financial assets and liabilities included energy-related physical and financial derivative transactions such as forward, option and other contracts for deliveries at active market locations, as well as our interest rate swaps.

Level 3.Level 3 of the fair value hierarchy consists of assets or liabilities that are valued using significant unobservable inputs at the reporting date. These unobservable assumptions reflect our assumptions about estimates that market participants would use in pricing the asset or liability, including natural gas basis prices, annualized volatilities of natural gas prices, and electricity congestion prices. A significant change to any one of these inputs in isolation could result in a significant upward or downward fluctuation in the fair value measurement. These inputs may be used with industry standard valuation methodologies that result in our best estimate of fair value for the assets or liabilities at the reporting date.

Our Risk Analysis and Mitigation (RA&M) Group determines the valuation policies and procedures. The RA&M Group reports to WGL’s Chief Financial Officer. In accordance with WGL’s valuation policy, we may utilize a variety of valuation methodologies to determine the fair value of Level 3 derivative contracts, including internally developed valuation inputs and

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

pricing models. The prices used in our valuations are corroborated using multiple pricing sources, and we periodically conduct assessments to determine whether each valuation model is appropriate for its intended purpose. The RA&M Group also evaluates changes in fair value measurements on a daily basis.

At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Level 3 derivative assets and liabilities included: (i) physical contracts valued at illiquid market locations with no observable market data; (ii) long-dated positions where observable pricing is not available over the majority of the life of the contract; (iii) contracts valued using historical spot price volatility assumptions and (iv) valuations using indicative broker quotes for inactive market locations.

The following tables set forth financial instruments recorded at fair value as of December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, respectively. A financial instrument’s classification within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy.



WGL Holdings, Inc. Fair Value Measurements Under the Fair Value Hierarchy
(In millions)	Level 1		Level 2			Level 3			Total
At December 31, 2017
Assets
Natural gas related derivatives	$	—	$	24.6		$	53.2		$	77.8
Electricity related derivatives	—		3.1			6.3			9.4
Interest rate derivatives	—		9.7			—			9.7
Total Assets	$	—	$	37.4		$	59.5		$	96.9
Liabilities
Natural gas related derivatives	$	—	$	(33.0	)	$	(170.1	)	$	(203.1	)
Electricity related derivatives	—		(1.6		)	(19.1		)	(20.7		)
Interest rate derivatives	—		(9.1		)	—			(9.1		)
Total Liabilities	$	—	$	(43.7	)	$	(189.2	)	$	(232.9	)
At September 30, 2017
Assets
Natural gas related derivatives	$	—	$	18.4		$	52.8		$	71.2
Electricity related derivatives	—		0.1			15.5			$	15.6
Interest rate derivatives	—		9.8			—			$	9.8
Total Assets	$	—	$	28.3		$	68.3		$	96.6
Liabilities
Natural gas related derivatives	$	—	$	(15.5	)	$	(167.4	)	$	(182.9	)
Electricity related derivatives	—		(4.1		)	(21.7		)	(25.8		)
Interest rate derivatives	—		(8.8		)	—			(8.8		)
Total Liabilities	$	—	$	(28.4	)	$	(189.1	)	$	(217.5	)

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

WGL Holdings, Inc.
Fair Value Measurements Under the Fair Value Hierarchy
(In millions) Level 1 Level 2 Level 3 Total
At December 31, 2016
Assets
Natural gas related derivatives $ —
$ 29.5
$ 40.4
$ 69.9
Electricity related derivatives —
0.6
13.1
13.7
Interest rate derivatives —
11.9
—
11.9
Total Assets $ —
$ 42.0
$ 53.5
$ 95.5
Liabilities
Natural gas related derivatives $ —
$ (33.8 ) $ (269.0 ) $ (302.8 )
Electricity related derivatives —
(2.7 ) (21.4 ) (24.1 )
Interest rate derivatives —
(5.5 ) —
(5.5 )
Total Liabilities $ —
$ (42.0 ) $ (290.4 ) $ (332.4 )
At September 30, 2016
Assets
Natural gas related derivatives $ —
$ 28.8
$ 54.0
$ 82.8
Electricity related derivatives —
0.6
20.9
21.5
Interest rate derivatives —
0.2
—
0.2
Total Assets $ —
$ 29.6
$ 74.9
$ 104.5
Liabilities
Natural gas related derivatives $ —
$ (46.7 ) $ (318.2 ) $ (364.9 )
Electricity related derivatives —
(3.8 ) (29.9 ) (33.7 )
Interest rate derivatives —
(43.1 ) —
(43.1 )
Total Liabilities $ —
$ (93.6 ) $ (348.1 ) $ (441.7 )


Washington Gas Light Company Fair Value Measurements Under the Fair Value Hierarchy	Washington Gas Light Company Fair Value Measurements Under the Fair Value Hierarchy											Washington Gas Light Company Fair Value Measurements Under the Fair Value Hierarchy
(In millions)	Level 1		Level 2			Level 3			Total			Level 1		Level 2			Level 3			Total
At December 31, 2016
At December 31, 2017
Assets
Natural gas related derivatives	$	—	$	11.0		$	20.4		$	31.4		$	—	$	8.4		$	16.4		$	24.8
Total Assets	$	—	$	11.0		$	20.4		$	31.4		$	—	$	8.4		$	16.4		$	24.8
Liabilities
Natural gas related derivatives	$	—	$	(20.9	)	$	(229.2	)	$	(250.1	)	$	—	$	(7.0	)	$	(141.8	)	$	(148.8	)
Total Liabilities	$	—	$	(20.9	)	$	(229.2	)	$	(250.1	)	$	—	$	(7.0	)	$	(141.8	)	$	(148.8	)
At September 30, 2016
At September 30, 2017
Assets
Natural gas related derivatives	$	—	$	15.4		$	24.4		$	39.8		$	—	$	7.0		$	17.0		$	24.0
Total Assets	$	—	$	15.4		$	24.4		$	39.8		$	—	$	7.0		$	17.0		$	24.0
Liabilities
Natural gas related derivatives	$	—	$	(21.2	)	$	(276.0	)	$	(297.2	)	$	—	$	(5.7	)	$	(139.6	)	$	(145.3	)
Total Liabilities	$	—	$	(21.2	)	$	(276.0	)	$	(297.2	)	$	—	$	(5.7	)	$	(139.6	)	$	(145.3	)

The following table includes quantitative information about the significant unobservable inputs used in the fair value measurement of our Level 3 financial instruments and the respective fair values of the net derivative asset and liability positions, by contract type, as of December 31, ~~2016~~2017 and September 30, ~~2016.~~2017.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



Quantitative Information about Level 3 Fair Value Measurements
(In millions)	Net Fair Value December 31, ~~2016~~2017	Valuation Techniques	Unobservable Inputs	Range

WGL Holdings, Inc.
Natural gas related derivatives	$~~(228.6)~~(113.2)	Discounted Cash Flow	Natural Gas Basis Price (per dekatherm)	($~~1.723)~~1.125) - ~~$5.270~~$3.400
		Option Model	Natural Gas Basis Price (per dekatherm)	($~~1.605)~~1.030) - ~~$2.903~~$3.100
	$(3.7)		Annualized Volatility of Spot Market Natural Gas	~~25.5%~~30.2% - ~~869.9%~~714.1%
Electricity related derivatives	$~~(8.3)~~(12.8)	Discounted Cash Flow	Electricity Congestion Price (per megawatt hour)	($~~6.199)~~2.977) - ~~$66.300~~$78.990

Washington Gas Light Company
Natural gas related derivatives	$~~(208.8)~~(125.4)	Discounted Cash Flow	Natural Gas Basis Price (per dekatherm)	($~~1.400)~~1.125) - ~~$5.270~~$2.725

(In millions)	Net Fair Value September 30, ~~2016~~2017

WGL Holdings, Inc.
Natural gas related derivatives	$~~(264.1)~~(112.4)	Discounted Cash Flow	Natural Gas Basis Price (per dekatherm)	($~~2.021)~~2.095) - ~~$3.290~~$2.805
		Option Model	Natural Gas Basis Price (per dekatherm)	($~~2.105)~~2.095) - ~~$3.310~~$2.358
	$~~(0.1)~~(2.2)		Annualized Volatility of Spot Market Natural Gas	~~25.5%~~28.7% - ~~869.9%~~566.8%
Electricity related derivatives	$~~(9.1)~~(6.2)	Discounted Cash Flow	Electricity Congestion Price (per megawatt hour)	($~~6.199)~~2.736) - ~~$68.700~~$56.500

Washington Gas Light Company
Natural gas related derivatives	$~~(251.6)~~(122.6)	Discounted Cash Flow	Natural Gas Basis Price (per dekatherm)	($~~2.021)~~1.928) - ~~$3.290~~$2.805

The following tables are a summary of the changes in the fair value of our derivative instruments that are measured at net fair value on a recurring basis in accordance with ASC Topic 820 using significant Level 3 inputs during the three months ended December 31, 2017 and 2016, ~~and 2015,~~ respectively.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)


Reconciliation of Fair Value Measurements Using Significant Level 3 Inputs	Reconciliation of Fair Value Measurements Using Significant Level 3 Inputs												Reconciliation of Fair Value Measurements Using Significant Level 3 Inputs
	WGL Holdings, Inc.									Washington Gas Light Company			WGL Holdings, Inc.									Washington Gas Light Company
(In millions)	Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives			Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives
Three Months Ended December 31, 2017
Balance at October 1, 2017													$	(114.6	)	$	(6.2	)	$	(120.8	)	$	(122.6	)
Realized and unrealized gains (losses)
Recorded to income													(4.1		)	(9.2		)	(13.3		)	(3.8		)
Recorded to regulatory assets—gas costs													(6.9		)	—			(6.9		)	(6.9		)
Transfers into Level 3													0.3			—			0.3			0.2
Transfers out of Level 3													(0.3		)	—			(0.3		)	—
Purchases													—			2.5			2.5			—
Settlements													8.7			0.1			8.8			7.7
Balance at December 31, 2017													$	(116.9	)	$	(12.8	)	$	(129.7	)	$	(125.4	)
Three Months Ended December 31, 2016
Balance at October 1, 2016	$	(264.1	)	$	(9.1	)	$	(273.2	)	$	(251.6	)	$	(264.1	)	$	(9.1	)	$	(273.2	)	$	(251.6	)
Realized and unrealized gains (losses)
Recorded to income	10.3			(3.6		)	6.7			17.0			10.3			(3.6		)	6.7			17.0
Recorded to regulatory assets—gas costs	22.0			—			22.0			22.0			22.0			—			22.0			22.0
Transfers into Level 3	(0.2		)	—			(0.2		)	0.2			(0.2		)	—			(0.2		)	0.2
Purchases	—			(2.8		)	(2.8		)	—			—			(2.8		)	(2.8		)	—
Settlements	3.4			7.2			10.6			3.6			3.4			7.2			10.6			3.6
Balance at December 31, 2016	$	(228.6	)	$	(8.3	)	$	(236.9	)	$	(208.8	)	$	(228.6	)	$	(8.3	)	$	(236.9	)	$	(208.8	)
Three Months Ended December 31, 2015
Balance at October 1, 2015	$	(309.7	)	$	(16.0	)	$	(325.7	)	$	(281.1	)
Realized and unrealized gains (losses)
Recorded to income	22.8			(22.3		)	0.5			17.0
Recorded to regulatory assets—gas costs	29.6			—			29.6			29.6
Transfers into Level 3	(0.9		)	—			(0.9		)	(0.2		)
Transfers out of Level 3	8.9			—			8.9			8.8
Purchases	—			6.4			6.4			—
Settlements	5.7			7.5			13.2			3.8
Balance at December 31, 2015	$	(243.6	)	$	(24.4	)	$	(268.0	)	$	(222.1	)

Transfers between different levels of the fair value hierarchy may occur based on fluctuations in the valuation inputs and on the level of observable inputs used to value the instruments from period to period. It is our policy to show both transfers into and out of the different levels of the fair value hierarchy at the fair value as of the beginning of the period. ~~There were no transfers out of Level 3 during the three months ended December 31, 2016.~~ Transfers out of Level 3 ~~during~~for the ~~three months ended December 31, 2015~~periods presented were due to an increase in observable market ~~inputs.~~inputs, primarily reflecting a decrease in the duration of the contracts being valued. Transfers into Level 3 ~~during~~for the ~~three months ended December 31, 2016 and 2015~~periods presented were due to an increase in unobservable market ~~inputs.~~inputs, primarily pricing points.

The table below sets forth the line items on the statements of income to which amounts are recorded for the three months ended December 31, ~~2016~~2017 and ~~2015,~~2016, respectively, related to fair value measurements using significant Level 3 inputs.


Realized and Unrealized Gains (Losses) Recorded to Income for Level 3 Measurements	Realized and Unrealized Gains (Losses) Recorded to Income for Level 3 Measurements											Realized and Unrealized Gains (Losses) Recorded to Income for Level 3 Measurements
	WGL Holdings, Inc.									Washington Gas Light Company		WGL Holdings, Inc.									Washington Gas Light Company
(In millions)	Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives		Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives
Three Months Ended December 31, 2017
Operating revenues—non-utility												$	(6.5	)	$	(16.1	)	$	(22.6	)	$	—
Utility cost of gas												(3.8		)	—			(3.8		)	(3.8		)
Non-utility cost of energy-related sales												6.2			6.9			13.1			—
Total												$	(4.1	)	$	(9.2	)	$	(13.3	)	$	(3.8	)
Three Months Ended December 31, 2016
Operating revenues—non-utility	$	(10.3	)	$	(10.7	)	$	(21.0	)	$	—	$	(10.3	)	$	(10.7	)	$	(21.0	)	$	—
Utility cost of gas	17.0			—			17.0			17.0		17.0			—			17.0			17.0
Non-utility cost of energy-related sales	3.6			7.1			10.7			—		3.6			7.1			10.7			—
Total	$	10.3		$	(3.6	)	$	6.7		$	17.0	$	10.3		$	(3.6	)	$	6.7		$	17.0
Three Months Ended December 31, 2015
Operating revenues—non-utility	$	9.5		$	(12.2	)	$	(2.7	)	$	—
Utility cost of gas	17.0			—			17.0			17.0
Non-utility cost of energy-related sales	(3.7		)	(10.1		)	(13.8		)	—
Total	$	22.8		$	(22.3	)	$	0.5		$	17.0

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Unrealized gains (losses) attributable to derivative assets and liabilities measured using significant Level 3 inputs were recorded as follows, for the three months ended December 31, ~~2016~~2017 and ~~2015,~~2016, respectively.


Unrealized Gains (Losses) Recorded for Level 3 Measurements	Unrealized Gains (Losses) Recorded for Level 3 Measurements											Unrealized Gains (Losses) Recorded for Level 3 Measurements
	WGL Holdings, Inc.									Washington Gas Light Company		WGL Holdings, Inc.									Washington Gas Light Company
(In millions)	Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives		Natural Gas Related Derivatives			Electricity Related Derivatives			Total			Total - Natural Gas Related Derivatives
Three Months Ended December 31, 2017
Recorded to income
Operating revenues—non-utility												$	(5.5	)	$	(13.6	)	$	(19.1	)	$	—
Utility cost of gas												(4.6		)	—			(4.6		)	(4.6		)
Non-utility cost of energy-related sales												4.2			6.2			10.4			—
Recorded to regulatory assets—gas costs												(7.5		)	—			(7.5		)	(7.5		)
Total												$	(13.4	)	$	(7.4	)	$	(20.8	)	$	(12.1	)
Three Months Ended December 31, 2016
Recorded to income
Operating revenues—non-utility	$	(9.7	)	$	(5.9	)	$	(15.6	)	$	—	$	(9.7	)	$	(5.9	)	$	(15.6	)	$	—
Utility cost of gas	15.6			—			15.6			15.6		15.6			—			15.6			15.6
Non-utility cost of energy-related sales	(0.1		)	11.7			11.6			—		(0.1		)	11.7			11.6			—
Recorded to regulatory assets—gas costs	19.7			—			19.7			19.7		19.7			—			19.7			19.7
Total	$	25.5		$	5.8		$	31.3		$	35.3	$	25.5		$	5.8		$	31.3		$	35.3
Three Months Ended December 31, 2015
Recorded to income
Operating revenues—non-utility	$	11.3		$	(5.0	)	$	6.3		$	—
Utility cost of gas	15.9			—			15.9			15.9
Non-utility cost of energy-related sales	(4.4		)	(3.6		)	(8.0		)	—
Recorded to regulatory assets—gas costs	27.0			—			27.0			27.0
Total	$	49.8		$	(8.6	)	$	41.2		$	42.9

The following table presents the carrying amounts and estimated fair values of our financial instruments at December 31, ~~2016~~2017 and September 30, ~~2016.~~2017.


WGL Holdings, Inc. Fair Value of Financial Instruments	WGL Holdings, Inc. Fair Value of Financial Instruments								WGL Holdings, Inc. Fair Value of Financial Instruments
	December 31, 2016				September 30, 2016				December 31, 2017				September 30, 2017
(In millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Money market funds^(a)	$	13.3	$	13.3	$	10.6	$	10.6	$	70.1	$	70.1	$	11.8	$	11.8
Other short-term investments^(a)	$	0.2	$	0.2	$	1.4	$	1.4
Commercial paper ^(b)	$	593.0	$	593.0	$	269.0	$	269.0	$	503.9	$	503.9	$	505.0	$	505.0
Project financing ^(b)	$	41.4	$	41.4	$	62.4	$	62.4	$	94.6	$	94.6	$	54.8	$	54.8
Long-term debt^(c)	$	1,435.2	$	1,540.6	$	1,435.0	$	1,641.9	$	1,679.9	$	1,842.8	$	1,430.9	$	1,577.3

																	Washington Gas Light Company Fair Value of Financial Instruments
	December 31, 2016				September 30, 2016				December 31, 2017				September 30, 2017
(In millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Money market funds ^(a)	$	5.2	$	5.2	$	5.0	$	5.0	$	13.7	$	13.7	$	4.8	$	4.8
Other short-term investments ^(a)	$	0.2	$	0.2	$	1.4	$	1.4
Commercial paper ^(b)	$	219.0	$	219.0	$	42.0	$	42.0	$	162.0	$	162.0	$	123.0	$	123.0
Project financing ^(b)	$	37.7	$	37.7	$	62.4	$	62.4	$	85.4	$	85.4	$	43.8	$	43.8
Long-term debt ^(c)	$	939.1	$	1,042.6	$	939.0	$	1,126.4	$	1,084.6	$	1,232.9	$	1,134.5	$	1,271.0


^(a)	Balance is located in cash and cash equivalents in the accompanying balance sheets. These amounts may be offset by outstanding checks.


^(b)	Balance is located in notes payable in the accompanying balance sheets.


^(c)	Excludes current maturities.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

Our money market funds are Level 1 valuations and their carrying amount approximates fair value. Other short-term investments are primarily overnight investment accounts; their carrying amount approximates fair value based on Level 2

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

inputs. The maturity of our commercial paper outstanding at both December 31, ~~2016~~2017 and September 30, ~~2016~~2017 is under 30 days. Due to the ~~short term~~short-term nature of these notes, the carrying cost of our commercial paper approximates fair value using Level 2 inputs. Due to the ~~short term~~ nature of our project financing arrangements, the carrying cost approximates fair value using Level 2 inputs. Neither WGL’s nor Washington Gas’ long-term debt is actively traded. The fair value of long-term debt was estimated based on the quoted market prices of the U.S. Treasury issues having a similar term to maturity, adjusted for the credit quality of the debt issuer, WGL or Washington Gas. Our long-term debt fair value measurement is classified as Level 3.

On October 1, 2016, WGL and Washington Gas adopted ASU 2015-03 and ASU 2015-15. This standard requires an entity to account for debt issuance costs as a valuation account presented as a deduction from the face amount of debt in the balance sheet. Prior period amounts related to other deferred charges and other assets and long-term debt in the accompanying condensed balance sheets have been reclassified to conform to the current period presentation.

NOTE 10. OPERATING SEGMENT REPORTING

We have four reportable operating segments: regulated utility, retail energy-marketing, commercial energy systems and midstream energy services. The division of these segments into separate revenue generating components is based upon regulation, products and services. Our chief operating decision maker is our Chief Executive Officer and we evaluate segment performance based on Earnings Before Interest and Taxes (EBIT). EBIT is defined as earnings before interest and taxes ~~less~~net of amounts attributable to non-controlling interests. Items we do not include in EBIT are interest expense, intercompany financing activity, dividends on Washington Gas preferred stock, and income taxes. EBIT includes transactions between reportable segments. We also evaluate our operating segments based on other relevant factors, such as penetration into their respective markets and return on equity.

Our four segments are summarized below.

Regulated Utility – The regulated utility segment is our core business. It consists of Washington Gas and Hampshire. Washington Gas provides regulated gas distribution services (including the sale and delivery of natural gas) to end use customers and natural gas transportation services to an unaffiliated natural gas distribution company in West Virginia under a Federal Energy Regulatory Commission (FERC) approved interstate transportation service operating agreement. Hampshire provides regulated interstate natural gas storage services to Washington Gas under a FERC approved interstate storage service tariff.

Retail Energy-Marketing – The retail energy-marketing segment consists of WGL Energy Services, which sells natural gas and electricity directly to retail customers in competition with regulated utilities and unregulated gas and electricity marketers.

Commercial Energy Systems – The commercial energy systems segment consists of WGL Energy Systems which provides clean and energy efficient solutions including commercial solar, energy efficiency and combined heat and power projects and other distributed generation solutions to government and commercial clients. In addition, this segment comprises the operations of WGSW, a holding company formed to invest in alternative energy assets.

Midstream Energy Services – The midstream energy services segment consists of WGL Midstream, which specializes in the investment, management, development and optimization of natural gas storage and transportation midstream infrastructure projects.

Administrative and business development activity costs associated with WGL and Washington Gas Resources and activities and transactions that are not significant enough on a stand-alone basis to warrant treatment as an operating segment, and that do not fit into one of our four operating segments, are aggregated as “Other Activities” in the Operating Segment Financial Information presented below.

~~As a result of~~ Results for other activities primarily relate to costs associated with the ~~adoption of ASU 2015-03 and ASU 2015-15,~~ ~~Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Cost and Presentation and Subsequent Measurement of Debt Issuance Costs Associated~~planned merger with ~~Line-of-Credit Arrangements,~~ ~~prior period total assets have been recast to conform to current quarter presentation.~~AltaGas.

The following tables present operating segment information for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Operating Segment Financial Information
(In thousands)
Operating Revenues^(a)
Depreciation and Amortization Equity in
Earnings of
Unconsolidated Affiliates EBIT
Total
Assets

Capital
Expenditures

Equity Method
Investments
Three Months Ended
December 31, 2016
Regulated utility $ 333,986
$ 30,560
$ —
$ 102,717
$ 4,891,722
$ 111,681
$ —
Retail energy-marketing 298,684
305
—
29,185
518,914
404
—
Commercial energy systems^(b)
14,857
4,399
2,387
4,663
932,908
43,673
68,573
Midstream energy services (24,988 ) 9
(2,122 ) (28,484 ) 607,806
—
305,492
Other activities —
—
—
(1,198 ) 417,672
—
—
Eliminations^(c)
(13,052 ) 10
—
1,108
(893,632 ) —
—
Total consolidated $ 609,487
$ 35,283

$ 265

$ 107,991

$ 6,475,390

$ 155,758

$ 374,065
Three Months Ended
December 31, 2015
Regulated utility $ 295,246
$ 27,595
$ —
$ 99,289
$ 4,396,009
$ 83,561
$ —
Retail energy-marketing 289,395
306
—
(567 ) 470,214
430
—
Commercial energy systems 15,622
3,481
394
943
723,401
17,022
62,618
Midstream energy services 21,210
35
869
20,839
258,013
—
82,565
Other activities —
—
—
(780 ) 271,329
—
—
Eliminations^(c)
(8,089 ) (5 ) —
27
(625,814 ) —
—
Total consolidated $ 613,384
$ 31,412
$ 1,263
$ 119,751
$ 5,493,152
$ 101,013
$ 145,183

(a) Operating revenues are reported gross of revenue taxes. Revenue taxes of both the regulated utility and the retail energy-marketing segments include gross receipt taxes. Revenue taxes of the regulated utility segment also include public service commission fees, franchise fees and energy taxes. Operating revenue amounts in the “Eliminations” row represent total intersegment revenues associated with sales from the regulated utility segment to the retail energy-marketing segment. Midstream Energy Services’ cost of energy related sales is netted with its gross revenues.



Operating Segment Financial Information
(In thousands)	Operating Revenues			Depreciation and Amortization		Equity in Earnings of Unconsolidated Affiliates			EBIT			Total Assets			Capital Expenditures		Equity Method Investments
Three Months Ended December 31, 2017
Regulated utility	$	377,470		$	34,103	$	—		$	98,365		$	5,227,299		$	76,762	$	—
Retail energy-marketing	248,693			282		—			3,742			533,273			—		—
Commercial energy systems^(a)	20,063			6,584		—			5,647			1,104,588			22,292		—
Midstream energy services	17,687			4		5,892			22,185			802,613			—		489,354
Other activities	—			—		—			(4,171		)	269,719			—		—
Eliminations^(b)	(11,473		)	12		—			1,689			(874,918		)	—		—
Total consolidated	$	652,440		$	40,985	$	5,892		$	127,457		$	7,062,574		$	99,054	$	489,354
Three Months Ended December 31, 2016
Regulated utility	$	333,986		$	30,560	$	—		$	102,717		$	4,891,722		$	111,681	$	—
Retail energy-marketing	298,684			305		—			29,185			518,914			404		—
Commercial energy systems^(a)	14,857			4,399		2,387			4,663			932,908			43,673		68,573
Midstream energy services	(24,988		)	9		(2,122		)	(28,484		)	607,806			—		305,492
Other activities	—			—		—			(1,198		)	417,672			—		—
Eliminations^(b)	(13,052		)	10		—			1,108			(893,632		)	—		—
Total consolidated	$	609,487		$	35,283	$	265		$	107,991		$	6,475,390		$	155,758	$	374,065

~~(b)~~(a) As of August 2016, Commercial ~~energy systems'~~Energy Systems' operating revenues include revenues from non-controlling interest. Commercial energy systems' EBIT is adjusted for the effects of non-controlling interest.

~~(c)~~(b) Intersegment eliminations include any mark-to market valuations associated with trading activities between WGL Midstream and WGL Energy Services, intercompany loans and a timing difference between Commercial Energy Systems’ recognition of revenue for the sale of Renewable Energy Credits (RECs) to Retail Energy-Marketing and Retail Energy-Marketing’s recognition of the associated expense. Retail Energy-Marketing has recorded a portion of the REC’s purchased as inventory to be used in future periods at which time they will be expensed. Operating revenue amounts in the “Eliminations” row represent total intersegment revenues associated with sales from the regulated utility segment to the retail energy-marketing segment. Midstream Energy Services’ cost of energy related sales is netted with its gross revenues.

The following table provides a reconciliation from EBIT to net income applicable to common stock.


	Three Months Ended December 31,				Three Months Ended December 31,
(In thousands)	2016		2015		2017			2016
Total consolidated EBIT	$	107,991	$	119,751	$	127,457		$	107,991
Interest expense	16,235		12,760		20,197			16,235
Income tax expense	33,454		38,490
Income tax expense (benefit)					(31,110		)	33,454
Dividends on Washington Gas Light Company preferred stock	330		330		330			330
Net income applicable to common stock	$	57,972	$	68,171	$	138,040		$	57,972

NOTE 11. OTHER INVESTMENTS

~~When determining how to account~~WGL has both solar and pipeline investments and accounts for ~~our~~its interests in ~~other~~ legal entities ~~WGL first evaluates if we are required to apply the~~as either a: (i) variable interest entity (VIE) ~~model~~or a (ii) voting interest entity (non-VIE). A VIE is a legal entity with one of ~~accounting~~the following characteristics: (i) has insufficient at-risk equity to fund its activities without additional subordinated financial support from any other party or parties; (ii) whose equity holders as a group lack the ~~entity. If the VIE model is not applicable,~~characteristics of a controlling financial interest; or (iii) the entity is ~~evaluated~~structured with non-substantive voting rights.

The determination of whether or not to consolidate a VIE under GAAP requires a significant amount of judgment. This includes, but is not limited to, consideration of our contractual relationship with the entity, the legal structure of the entity,

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

whether or not the entity has enough equity to finance its activities without additional financial support, the voting power of the equity holders, the obligation of the equity holders to absorb losses of the entity and their rights to receive any expected residual returns.

We have investments in both consolidated and unconsolidated VIEs which are described in detail below. The unconsolidated investments are accounted for under the ~~voting interest model.~~equity method of accounting with profits and losses included in “Equity in earnings of unconsolidated affiliates” in the accompanying Condensed Consolidated Statements of Income.

Under the VIE model, we have a controlling financial interest in a VIE (i.e., are the primary beneficiary) and would consolidate the entity when we have current or potential rights that give us the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance combined with a variable interest that gives us the right to receive potentially significant benefits or the obligation to absorb potentially significant losses. When changes occur to the design of an entity, we reconsider whether itthe entity is ~~subject to the~~a VIE model. We also continuously evaluate whether we have a controlling financial interest in a VIE.

Under the voting interest model, we ~~generally~~consolidate an entity when we have a controlling financial interest ~~in an entity where we currently hold,~~by holding directly or indirectly, more than 50% of the voting rights or ~~where we exercise~~by exercising control through substantive participating rights. However, we consider substantive rights held by other partners in determining if we hold a controlling financial interest, and in some cases, despite owning more than 50% of the common stock of an investee, an evaluation of our rights relative to other investors may result in the determination that we do not have a controlling financial ~~interest.~~interest and do not consolidate the entity. We reevaluate whether we have a controlling financial interest in these entities when our voting or substantive participating rights change.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

~~Unconsolidated affiliates are unconsolidated VIEs and other entities evaluated under the voting interest method in which~~ Where we do not have a controlling financial interest, ~~but over which~~ we ~~have varying degrees of influence. Where we have significant influence,~~apply the ~~affiliates are accounted for as~~ equity method ~~investments. Where we do not have significant influence, the affiliates~~of accounting in which investments are ~~accounted for under the cost method.~~initially measured at cost. Investments in, and advances to, affiliated companies are presented in the caption “Investments in unconsolidated affiliates” in the accompanying Condensed Consolidated Balance Sheets.

WGL uses the Hypothetical Liquidation at Book Value (HLBV) methodology to determine its earnings or losses for certain equity method investments as well as for the non-controlling interests in consolidated investments when the governing structuring agreement over the equity investment results in different liquidation rights and priorities than what is reflected by the underlying ~~percentage~~ ownership ~~interests.~~interest percentage. For investments accounted for under the HLBV method, simply applying the percentage ownership interest to GAAP net income in order to determine earnings or losses does not accurately represent the income allocation and cash flow distributions that will ultimately be received by the investors. The equity investment agreements for ASD Solar, LP (ASD), Meade Pipeline Co LLC (Meade), Mountain Valley Pipeline, LLC (Mountain Valley) and Stonewall Gas Gathering System (Stonewall System) have liquidation rights and priorities that are sufficiently different from the ownership percentages that the HLBV method was deemed appropriate. WGL also uses the HLBV methodology to allocate the earnings between the partners in the newly formed solar investment companies SFGF LLC (SFGF), SFRC LLC (SFRC) and SFEE, LLC (SFEE). The calculation may vary in its complexity depending on the capital structure and the tax considerations for the investments.

~~HLBV is a balance sheet approach.~~ When applying HLBV, WGL determines the amount that it would receive if an equity investment entity were to liquidate all of its assets at book value (as valued in accordance with GAAP) and distribute that cash to the investors based on the contractually defined liquidation priorities. The change in WGL's claim on the investee's book value at the beginning and end of the reporting period (adjusted for contributions and distributions) is WGL’s share of the earnings or losses from the equity investment for the period.

Consolidated Investments

Variable Interest ~~Entities~~Entities-Solar

~~WGL has a variable interest in five investments that qualify as VIEs:~~

~~Meade,~~

~~SunEdison,~~

~~ASD,~~

~~SFGF, and~~

~~SFRC.~~

At December 31, 2016, WGL and its subsidiaries are not the primary beneficiary for three of the five VIEs (Meade, SunEdison and ASD); therefore we have not consolidated those VIE entities. The nature of WGL’s involvement with these investments lacks the characteristics of a controlling financial interest. WGL either does not have control over any of the non-consolidated VIEs’ activities that are economically significant to the VIEs and/or WGL does not have the obligation to absorb expected losses or the right to receive expected gains that could be significant to the VIE.2017, WGL's subsidiary, WGSW, Inc. iswas the primary beneficiary ~~for~~of SFGF, SFRC, SFGF II, ASD and ~~SFRC; accordingly,~~SFEE, because of its ability to direct the activities most significant to the economic performance of those entities. Accordingly, we have consolidated ~~those VIE entities.~~these VIE's.

~~Our maximum~~

SFGF, SFRC, and SFGF II

WGSW, along with its various tax equity partners, formed SFGF, SFRC, and SFGF II, investments to acquire, own, and operate distributed generation solar projects nationwide. WGSW is the managing member of these investments and will provide cash equal to the purchase price of the solar projects less any contributions from the tax-equity partner. WGL Energy Systems is the operations and maintenance provider, and the developer of the projects.

Profits and losses are allocated between the partners under the HLBV method of accounting and the portion allocated to the tax equity partner is included in “Net income (loss) attributable to non-controlling interest” on the accompanying Condensed

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Consolidated Statements of Income and is recorded to Non-controlling interest on the accompanying Condensed Consolidated Balance Sheets.

As of December 31, 2017, WGSW has contributed the following amounts to SFGF, SFRC, and SFGF II, respectively, $16.8 million, $20.8 million and $0.8 million.

ASD

WGSW is a limited partner in ASD Solar LP (ASD), a limited partnership formed to own and operate a portfolio of residential solar projects, primarily rooftop photovoltaic power generation systems. As a limited partner, WGSW had provided funding to the partnership but did not have power to direct the activities that most significantly affect the operations and economic performance of the entity. In January 2014, the funding commitment period ended for the partnership. Prior to July 10, 2017, ASD was being consolidated by the general partner, Solar Direct LLC (Solar Direct). Solar Direct is a wholly owned subsidiary of American Solar Direct Inc. (ASDI).

In June 2017, ASDI filed for Chapter 7 bankruptcy because of financial ~~exposure~~difficulties. To ensure continuing operations of the partnership and minimal disruptions to ~~loss~~the customers, WGSW petitioned the Bankruptcy Court to remove Solar Direct as manager of ASD operations and to approve the appointment of SF ASD, a wholly-owned subsidiary of WGL Energy Systems, which was formed to take over the management and operations of the partnership, as manager of ASD operations. On July 10, 2017, the Bankruptcy Court granted the bankruptcy trustee's emergency motion to assign management rights and control of ASD to SF ASD and WGSW consolidated ASD as a result. As of December 31, 2017, WGSW has contributed $72.5 million into the tax equity partnership.

SFEE

On November 23, 2016, WGSW and a tax equity partner formed SFEE to acquire distributed generation solar projects that were to be developed by a third-party developer or WGL Energy Systems. New projects were to be designed and constructed under long-term power purchase agreements. On November 8, 2017, WGSW terminated the Master Purchase Agreement between SFEE, LLC and the third-party developer. The termination triggered a reassessment of the method of accounting for SFEE and as a result of ~~our involvement with~~ the ~~VIEs~~reassessment, SFEE is ~~equal to~~a VIE and consolidated by WGSW since then. As of December 31, 2017, WGSW has contributed $6.5 million into the ~~carrying~~tax equity partnership.

The following table summarizes the fair value amounts of SFEE assets and liabilities, as well as the estimated fair value of the ~~investment~~non-controlling interest as of the date of consolidation.



Fair Value of SFEE at Date of Consolidation
(in millions)	Fair Value
Property, plant and equipment	$	10.1
Other assets	0.1
Total assets	$	10.2
Net assets	$	10.2
Non-controlling interest	$	0.6
WGSW equity interest	$	9.6

Property, plant and ~~any liquidity arrangements, guarantees,~~equipment represents commercial solar assets for SFEE stated at cost, which was determined to equate fair value provided by a third-party appraisal.

The carrying amounts and ~~other contractual commitments.~~classification of the consolidated VIEs’ assets and liabilities included in our accompanying Condensed Consolidated Balance Sheets at December 31, 2017 and September 30, 2017 are as follows:

WGL Holdings, Inc.

Balance Sheet Location of Consolidated Investments

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



(in millions)	December 31, 2017		September 30, 2017
Current assets	$	5.8	$	4.4
Property, Plant and Equipment	137.5		121.7
Total assets	$	143.3	$	126.1
Current liabilities	0.2		0.2
Deferred credits	1.1		0.8
Total liabilities	$	1.3	$	1.0

Unconsolidated Investments

Variable Interest Entity-Pipelines

Meade

In 2014, WGL through its subsidiary WGL Midstream, entered into a limited liability company agreement and formed Meade Pipeline Co LLC (Meade), a Delaware limited liability company, with Transcontinental Gas Pipe Line Company, LLC (Williams) to invest in a regulated pipeline, a segment of Transco's Atlantic Sunrise project, called Central Penn Pipeline (Central Penn). Central Penn will be an approximately 185-mile pipeline originating in Susquehanna County, Pennsylvania and extending to Lancaster County, Pennsylvania that will have the capacity to transport and deliver up to approximately 1.7 million dekatherms per day of natural gas.

At December 31, 2017 and September 30, 2017, WGL Midstream held a $238.6 million and $146.7 million, respectively, equity method investment in Meade. WGL Midstream plans to invest an estimated $410 million for a 55% interest in Meade. Although WGL Midstream holds greater than a 50% interest in Meade, Meade is accounted for under the equity method of accounting because WGL Midstream does not have the power to direct the activities most significant to the economic performance of Meade. Meade is accounted for under the HLBV equity method of accounting, and any profits and losses are included in “Equity in earnings of unconsolidated affiliates” in the accompanying Condensed Consolidated ~~Statement~~Statements of Income and are added to or subtracted from the carrying amount of WGL’s investment balance.

At ~~December 31, 2016 and~~ September 30, ~~2016,~~2017, this VIE was not consolidated because WGL ~~Midstream held~~and its subsidiaries were not the primary beneficiaries. The nature of WGL’s involvement with this investment lacks the characteristics of a ~~$91.2 million and $80.8 million, respectively, equity method investment in~~controlling financial interest. WGL does not have control over activities that are economically significant to Meade.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

~~SunEdison~~

WGSW is a party to fund residential retail solar energy installations with SunEdison, Inc. (SunEdison). WGSW has a master purchase agreement and master lease agreement with Sun Edison for sale/leaseback arrangements for residential solar systems.

Our agreement with SunEdison is accounted for as a direct financing lease. WGSW records associated interest in the financing lease in “Other income (expenses)-net” line in the accompanying condensed consolidated statement of income. WGSW held a $26.7 million investment in the SunEdison direct financing lease at December 31, 2016, of which $0.1 million are current receivables recorded in “Accounts Receivable” in the accompanying condensed consolidated balance sheets at December 31, 2016. Additionally, we had balances of $9.6 million of unamortized tax credits related to SunEdison in "Unamortized investment tax credits" on the accompanying condensed consolidated balance sheets at December 31, 2016.

~~Minimum future lease payments receivable under direct financing lease with SunEdison over the next five fiscal years and thereafter are as follows:~~

Minimum Payments Receivable for Direct Financing Leases
(In millions)

Remainder of 2017 $ 1.1
2018 1.4
2019 1.5
2020 1.5
2021 1.5
Thereafter 23.9
Total $ 30.9

Minimum payments receivable exclude $7.1 million of residual values and $2.7 million in tax related items. Associated with these investments, WGSW holds $14.0 million of unearned income on its balance sheet.

On April 21, 2016, SunEdison filed a voluntary petition with the United States Bankruptcy Court for relief under Title 11 of the United States Code. EchoFirst Finance Company LLC, the subsidiary of SunEdison that is the party to our master purchase and lease agreements, is not a debtor in this bankruptcy proceeding. We will continue to monitor the impact of this development on our investment.

Our maximum financial exposure ~~is limited~~ to ~~WGSW's lease payment receivables and investment contributions made to these companies. On a quarterly basis, we review~~loss because of our direct financing lease for credit losses. Our review is based on multiple factors including historical losses, if any, economic factors currently impacting our counterparties' repayment ability and other factors relevant to the business such as changes to regulatory and tax incentives. Our exposure is offset by the owned physical assets received as part of the transaction and the quick economic return for the investment through the investment tax credit/treasury grant proceeds and accelerated depreciation.

~~Nextility-Lease Settlement and Assignment~~

During the three months ended December 31, 2016, WGSW terminated its sale/leaseback agreement with Nextility and entered into a new lease agreement with another unrelated third party, with significantly reduced payments and lease terms. Based on the lease classification criteria per ASC 840, it was determined that the new lease is an operating lease. As a result, the net investment of $5.4 million on the consolidated balance sheet was eliminated. The solar assets were recorded at present fair value using the income approach as $4.0 million to "Property, plant and equipment" and $1.4 million was recorded as a receivable. The unamortized investment tax credits (ITC) associatedinvolvement with this ~~lease will be deferred and amortized based on the assets' useful life. The deferred net ITC Receivable related to this lease~~VIE is ~~$3.5 million.~~

~~ASD~~

WGSW is also a limited partner in ASD, a limited partnership formed to own and operate a portfolio of residential solar projects, primarily rooftop photovoltaic power generation systems. As a limited partner, WGSW provided funding to the partnership but does not have power to direct the activities that most significantly affect the operations and economic performance of the entity. In January 2014, the funding commitment period expired for the partnership.

Our investment in ASD is accounted for under the HLBV equity method of accounting; any profits and losses are included in “Equity in earnings of unconsolidated affiliates” in the accompanying Consolidated Statement of Income and are added to or subtracted from the carrying amount of WGSW’s investment balance. At December 31, 2016 and September 30, 2016, WGSW held a $65.8 million and $66.1 million, respectively, equity method investment in ASD.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

ASD is consolidated by the general partner, Solar Direct LLC. Solar Direct LLC is a wholly owned subsidiary of American Solar Direct Inc. (ASDI). At December 31, 2016, the carrying amount of WGSW’s investment in ASD exceeded the amount of the underlying equity in net assets by $35.8 million due to WGSW recording additions to its investment in ASD’s net assets at fair value of contributions in accordance with GAAP. This basis difference is being amortized over the life of the assets.

~~SFGF~~

On August 24 2016, WGSW and a tax equity partner formed SFGF to acquire distributed generation solar projects in the State of Georgia that are developed by WGL Energy Systems. WGSW is the managing member and will provide cash equity equal to the purchase price of the solar projects less any contributions from the tax-equity partner. As of December 31, 2016 WGSW has contributed $12.0 million into the tax equity partnership and held a $15.1 million interest in SFGF.

SFGF is consolidated into WGL's results of operations because under the VIE method of accounting, WGSW is the primary beneficiary as a result of its ability to direct the activities most significant to the economic performance of SFGF. WGL Energy Systems is the operations and maintenance provider, and the developer of the projects. Profits and losses are allocated between the partners under the HLBV method of accounting and the portion allocated to the tax equity partner is included in "Net income (loss) attributable to non-controlling interest" on the consolidated statement of income and is recorded to "Non-controlling interest" on the consolidated balance sheets.

~~SFRC~~

On October 28 2016, WGSW and a tax equity partner formed SFRC to acquire distributed generation solar projects in the State of Minnesota that are developed by WGL Energy Systems. WGSW is the managing member and will provide cash equity equal to the purchase price of the solar projects less any contributions from the tax-equity partner. As of December 31, 2016 WGSW has contributed $2.5 million into the tax equity partnership.

SFRC is consolidated into WGL's results of operations because under the VIE method of accounting, WGSW is the primary beneficiary due to its ability to direct the activities most significant to the economic performance of SFRC. WGL Energy Systems is the operations and maintenance provider, and the developer of the projects. Profits and losses are allocated between the partners under the HLBV method of accounting and the portion allocated to the tax equity partner will be included in "Net income (loss) attributable to non-controlling interest" on the consolidated statement of income and is recorded to "Non-controlling interest" on the consolidated balance sheets.Midstream's capital contributions.

Non-VIE ~~Investments~~Investments-Pipelines

Constitution

~~In 2013, WGL~~WGL Midstream ~~invested~~owns a 10% interest in Constitution Pipeline Company, LLC (Constitution). ~~At December 31, 2016, WGL Midstream's total share of the cash contributions for~~The Constitution Pipeline is ~~estimated~~proposed to ~~be $95.5 million, over the term of the agreement, reflecting a 10% share in the pipeline venture. This natural gas pipeline venture will~~ transport natural gas from the Marcellus region in northern Pennsylvania to major northeastern markets. Constitution is accounted for under the equity method of accounting; any profits and losses are included in “Equity in earnings of unconsolidated affiliates” in the accompanying Condensed Consolidated ~~Statement~~Statements of Income and are added to or subtracted from the carrying amount of WGL’s investment balance. The equity method is considered appropriate because Constitution is an LLC with specific ownership accounts and ownership between five and fifty percent resulting in WGL Midstream maintaining a more than minor influence over the partnership operating and financing policies.

OnIn December 2014, Constitution received approval from the FERC to construct and operate the proposed pipeline. However, on April 22, 2016, the New York State Department of Environmental Conservation (NYSDEC) denied ~~Constitution's~~Constitution’s application for a Section 401 ~~Water Quality~~ Certification ~~(Section 401 Certification)~~ for the pipeline, which is necessary for the construction and operation of the pipeline. ~~Constitution has stated that it remains committed to pursuing the project and that it intends to pursue all available options to challenge the legality and appropriateness of NYSDEC’s decision.~~ In May 2016, Constitution filed actions in both the U.S. Circuit Court of Appeals for the Second Circuit and the U.S. District Court for the Northern District of New York, ~~respectively,~~ appealing the decision and a seeking declaratory judgment that the State of New York’s permitting authority is preempted by federal law. ~~The courts have granted Constitution's motions to expedite~~In May 2016, Constitution appealed the ~~schedules for these legal actions.~~

~~In light~~NYSDEC’s denial of the forgoing matters, Constitution has revised its target in-service date to the second half of 2018, which assumes that the legal challenge process is satisfactorily and promptly concluded. We can give no assurance, however, that Constitution’s efforts to obtain the Section 401 ~~Certification will be successful. At December 31, 2016~~certification to the United States Court of Appeals for the Second Circuit, and ~~September 30, 2016, we held~~in August 2017, the court issued a ~~$38.3 million~~decision denying in part and ~~$38.6 million, respectively, equity method investment~~dismissing in ~~Constitution. We have evaluated our investment in Constitution for other than temporary impairment as~~part Constitution’s appeal. The court expressly declined to rule on Constitution’s argument that the NYSDEC’s decision on Constitution’s Section 401 application constitutes a waiver of ~~December 31, 2016. Our impairment assessment used income and market approaches in determining~~ the ~~fair value of our investment in Constitution, including consideration of the~~certification

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

requirement. Constitution has filed a petition for rehearing with the Second Circuit Court's decision, but in October the court denied our petition. In January 2018, Constitution petitioned the United States Supreme Court to review the Second Circuit Court’s decision.

In October 2017, Constitution filed a petition for declaratory order requesting FERC to find that, by operation of law, the Section 401 certification requirement for the New York State portion of Constitution’s pipeline project was waived due to the failure by the NYSDEC to act on Constitution’s Section 401 application within a reasonable period of time as required by the express terms of such statute. The petition was consistent with a recent decision by the District of Columbia Circuit Court in another proceeding, in which the court clarified that an applicant facing similar circumstances should present evidence of waiver to the FERC. On January 11, 2018, the FERC denied the petition, finding that Section 401 provides that a state waives certification only when it does not act on an application within one year from the date of the application. The project’s sponsors remain committed to the project and plan to seek rehearing and, if necessary, appeal of the FERC’s decision.

Beginning in April 2016, we discontinued capitalization of development costs related to this project. At December 31, 2017 and September 30, 2017, WGL Midstream held a $38.2 million and $38.1 million, equity method investment in Constitution, respectively. We have evaluated our investment in Constitution for other than temporary impairment as of December 31, 2017. Our impairment assessment used income and market approaches in determining the fair value of our investment in Constitution, including consideration of the severity and duration of any decline in fair value of our investment in the project. Our key inputs included, but are not limited to, significant management judgments and estimates, including projections of the project’s cash flows, selection of a discount rate, market multipliers and probability weighting of potential outcomes of legal and regulatory proceedings. At ~~this time,~~December 31, 2017, we dodid not ~~have an other than temporary impairment and have not recorded~~record any impairment charge to reduce the carrying value of our investment. ~~If Constitution is ultimately unable to obtain the Section 401 Certification or other future developments or indicators~~In light of ~~an unfavorable resolution arise subsequently,~~FERC’s ruling on January 11, 2018, we expect that we will record an impairment charge of up to ~~substantially all~~$38.2 million, the current carrying amount of ~~our~~the investment, in the ~~capitalized project costs may~~quarter ending March 31, 2018. There could also be ~~required. It is also possible~~additional expenditures beyond this impairment; however, we believe that ~~Constitution could incur certain supplier-related costs in~~recoveries from the ~~event of a prolonged delay or termination~~sale of the ~~project. We~~inventories held by Constitution will ~~continue to monitor and update our impairment analysis as required.~~mostly offset these expenditures.

Mountain Valley Pipeline

In March 2015, WGL Midstream acquired a 7% equity interest in Mountain Valley Pipeline, LLC (Mountain Valley). On October 24, 2016, WGL Midstream acquired an additional 3% equity interest in Mountain Valley by assuming all of Vega Midstream MVP LLC's (Vega Energy) interest in the joint venture. WGL Midstream now owns a 10% interest in Mountain Valley.

The proposed pipeline to be developed, constructed, owned and operated by Mountain Valley, will transport approximately 2.0 million dekatherms of natural gas per day ~~from interconnects~~and connects with EQT Corporation's Equitrans system ~~near the MarkWest Mobley plant~~ in Wetzel County, West Virginia to Transcontinental Gas Pipe Line Company LLC's Station 165 in Pittsylvania County, Virginia. The pipeline is scheduled to be in service by December 2018.

At December 31, 2017 and September 30, 2017, WGL Midstream held a $76.8 million and $63.0 million equity method investment in Mountain Valley, respectively. WGL Midstream expects to invest in scheduled capital contributions through the in-service date of the pipeline, its pro rata share (based on its 10% equity interest) of project costs, an estimated aggregate amount of approximately ~~$327.6~~$350.0 million. ~~At December 31, 2016 and September 30, 2016, WGL Midstream held a $37.3 million and $22.5 million equity method investment in Mountain Valley, respectively.~~ The equity method is considered appropriate because Mountain Valley is an LLC with specific ownership accounts and ownership between five and fifty percent resulting in WGL Midstream maintaining a more than minor influence over the partnership operating and financing policies.

The carrying amount of WGL Midstream's investment in MVP exceeded the amount of the underlying equity in net assets by $0.5 million, which will be amortized over the life of the assets when it is put in production. The investment in MVP is accounted for Profits and losses are allocated under the HLBV ~~equity~~ method of ~~accounting.~~

~~Any profits~~accounting and ~~losses~~ are included in “Equity in earnings of unconsolidated affiliates” in the accompanying Condensed Consolidated ~~Statement~~Statements of Income and are added to or subtracted from the carrying amount of WGL’s investment balance.

Stonewall System

WGL Midstream has a 30% equity interest in an entity that owns and operates certain assets known as the Stonewall Gas Gathering System (the Stonewall System). WGL Midstream paid $89.4 million to acquire the equity interest pursuant to an option that WGL Midstream previously acquired. During the quarter ended December 31, 2016, WGL Midstream contributed an additional $45.5 million related to retiring debt at the entity level. No additional capital contributions are expected. The Stonewall System has the capacity to gather up to 1.4 billion cubic feet of natural gas per day from the Marcellus production region in West Virginia, and connects with an interstate pipeline system that serves markets in the mid-Atlantic region.

At December 31, 2017 and September 30, 2017, WGL Midstream held a ~~$138.7~~$135.7 million and ~~$95.5~~$136.7 million equity method investment in the Stonewall ~~System at December 31, 2016 and September 30, 2016, respectively.~~System. The equity method is considered appropriate because the Stonewall System is an LLC with specific ownership accounts and ownership between five and fifty percent resulting in WGL Midstream maintaining a more than minor influence over the partnership operating and financing policies.

The carrying amount of WGL Midstream's investment in the Stonewall System exceeded the amount of the underlying equity in net assets by $9.1 million, which is being amortized over the life of the assets. The investment in Stonewall System is accounted for under the HLBV equity method of accounting. Any profits Profits and losses are ~~included in “Equity in earnings of unconsolidated affiliates” in~~allocated under the ~~accompanying Consolidated Statement of Income and are added to or subtracted from the carrying amount of WGL’s investment balance.~~

~~SFEE~~

During the quarter ended December 31, 2016, WGSW and a tax equity partner formed SFEE to acquire distributed generation solar projects that are developed by a third-party developer. New systems will be designed and constructed under long-term power purchase agreements. As of December 31, 2016 WGSW has contributed $1.3 million into the partnership and held a $2.8 million interest in SFEE.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

SFEE is not considered a VIE and not consolidated under the voting interest model for limited partnerships. WGL is the managing member of SFEE and the operations and maintenance provider. In addition, WGL has the option to sell its own distributed generation solar projects to the developer for sale to SFEE and these assets remain on WGL's books until we no longer have continuing involvement. The equity method is considered appropriate because WGSW has significant influence over the operating and financial policies of SFEE. Profits and losses are allocated between the partners under the HLBV method of ~~accounting. Any profits~~accounting and ~~losses~~ are included in “Equity in earnings of unconsolidated affiliates” in the accompanying Condensed Consolidated ~~Statement~~Statements of Income and are added to or subtracted from the carrying amount of WGL’s investment balance.

The carrying amount of WGL ~~has also provided a guarantee on behalf~~Midstream's investment in the Stonewall System exceeded the amount of the ~~developer that could require maximum future payments~~underlying equity in net assets by $8.8 million as of ~~$13 million.~~

~~The balance sheet location~~December 31, 2017, which is being amortized over the life of the ~~investments discussed in this footnote at December 31, 2016 and September 30, 2016 are as follows:~~

~~WGL Holdings, Inc.~~

~~Balance Sheet Location of Other Investments~~

Solar Investments Pipelines
(in millions) Non-consolidated VIE's Consolidated VIE's Non-consolidated Non VIE's Non-consolidated VIE's Non-consolidated Non VIE's Total
December 31, 2016
Assets
Investments in unconsolidated affiliates $ 65.8
$ —
$ 2.8
$ 91.2
$ 214.3
$ 374.1
Property, plant and equipment —
43.1
10.4
—
—
53.5
Investments in direct financing leases, capital leases 26.6
—
—
—
—
26.6
Accounts receivable 0.1
0.3
—
—
—
0.4
Total assets $ 92.5
$ 43.4
$ 13.2
$ 91.2
$ 214.3
$ 454.6
September 30, 2016
Assets
Investments in unconsolidated affiliates $ 66.1
$ —
$ —
$ 80.8
$ 156.6
$ 303.5
Property, plant and equipment —
6.5
—
—
—
6.5
Construction in progress —
6.7
—
—
—
6.7
Investments in direct financing leases, capital leases 29.8
—
—
—
—
29.8
Accounts receivable 1.1
—
—
—
9.2
10.3
Total assets $ 97.0
$ 13.2
$ —
$ 80.8
$ 165.8
$ 356.8

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

assets.

The ~~income statement location of the investments discussed in this footnote for the three months ended December 31, 2016~~following tables present summary information about our unconsolidated VIEs and ~~2015 are as follows:~~non-VIEs:

WGL Holdings, Inc.

~~Income Statement~~Balance Sheet Location of ~~Other~~Unconsolidated Investments

Solar Investments Pipelines
(In millions) Non-consolidated VIE's Consolidated VIE's Non-consolidated Non VIE's Non-consolidated VIE's Non-consolidated Non VIE's Total
Three Months Ended
December 31, 2016
Equity in earnings of unconsolidated affiliates $ 0.9
$ —
$ 1.5
$ —
$ (2.1 ) $ 0.3
Depreciation and amortization 0.1
—
—
—
—
0.1
Other income (expenses) - net 0.6
—
—
—
(0.1 ) 0.5
Non-controlling interest —
(2.5 ) —
—
—
(2.5 )
Three Months Ended
December 31, 2015
Equity in earnings of unconsolidated affiliates $ 0.4
$ —
$ —
$ —
$ 0.9
$ 1.3
Depreciation and amortization 0.1
—
—
—
—
0.1
Other income - net 0.9
—
—
—
—
0.9



	Solar Investments			Pipelines
(in millions)		Non-VIEs^(a)		VIEs^(b)		Non-VIEs^(c)		Total
December 31, 2017
Assets
Investments in unconsolidated affiliates		$	—	$	238.6	$	250.8	$	489.4
Total assets		$	—	$	238.6	$	250.8	$	489.4
September 30, 2017
Assets
Investments in unconsolidated affiliates		$	9.6	$	146.7	$	237.9	$	394.2
Total assets		$	9.6	$	146.7	$	237.9	$	394.2

(a) Balance relates to interest held in SFEE on September 30, 2017

(b) Balance relates to equity method investment in Meade.

NOTE 12. RELATED PARTY TRANSACTIONS

WGL and its subsidiaries engage in inter-company transactions in the ordinary course of business. Inter-company transactions and balances have been eliminated from the consolidated financial statements of WGL, except as described below. Washington Gas provides accounting, treasury, legal and other administrative and general support to affiliates, and files consolidated tax returns that include affiliated taxable transactions. Washington Gas bills its affiliates in accordance with regulatory requirements for the actual cost of providing these services, which approximates their market value. To the extent such billings are outstanding, they are reflected in “Receivables from associated companies” on Washington Gas’ balance sheets. Washington Gas assigns or allocates these costs directly to its affiliates and, therefore, does not recognize revenues or expenses associated with providing these services. Washington Gas believes that allocations based on broad measures of business activity are appropriate for allocating expenses resulting from common services. Affiliate entities are allocated a portion of common services based on a formula driven by appropriate indicators of activity, as approved by management.

In connection with billing on behalf of unregulated ~~third party~~third-party marketers, including WGL Energy Services and with other miscellaneous billing processes, Washington Gas collects cash on behalf of affiliates and transfers the cash in a reasonable time period. Cash collected by Washington Gas on behalf of its affiliates but not yet transferred is recorded in “Payables to associated companies” on Washington Gas’ ~~balance sheets.~~Condensed Balance Sheets.

Washington Gas ~~has~~previously obtained third-party project financing on behalf of the ~~Federal~~federal government to provide funds during the construction of certain energy management services projects entered into under Washington Gas' ~~area- wide~~area-wide contract. In ~~connection~~December 2016, WGL Energy Systems entered into an agreement to obtain third-party financing and receive funds directly from the third-party lender during the construction period associated with ~~work completed under~~ the ~~area-wide contract,~~related energy management service projects. As part of the ongoing financing arrangement, Washington Gas records a receivable representing the government’s obligation, and records an inter-company payable to WGL Energy Systems for the construction work is performed ~~by WGL Energy Systems on behalf of Washington Gas and an~~for the same amount ~~is recorded~~ in "Payables to associated companies" ~~for work performed by WGL Energy Systems for which cash has not been transferred.~~. Refer to Note 3—Short Term Debt of the Notes to Condensed Consolidated Financial Statements for further discussion of the project financing.

The following table presents the receivables from and payables to associated companies as of December 31, ~~2016~~2017 and September 30, ~~2016.~~2017.

Washington Gas Receivables From / Payables To Associated Companies
(In millions) December 31, 2016 September 30, 2016
Receivables from Associated Companies $ 15.5
$ 13.8
Payables to Associated Companies $ 71.9
$ 65.8

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)



Washington Gas Receivables From / Payables To Associated Companies
(In millions)	December 31, 2017		September 30, 2017
Receivables from associated companies	$	27.0	$	32.4
Payables to associated companies	$	107.6	$	94.8

Washington Gas provides gas balancing services related to storage, injections, withdrawals and deliveries to all energy marketers participating in the sale of natural gas on an unregulated basis through the customer choice programs that operate in its service territory. These balancing services include the sale of natural gas supply commodities related to various peaking arrangements contractually supplied to Washington Gas and then partially allocated and assigned by Washington Gas to the energy marketers, including WGL Energy Services. Washington Gas records revenues for these balancing services pursuant to tariffs approved by the appropriate regulatory bodies. These related party amounts related to balancing services provided to WGL Energy Services have been eliminated in the consolidated financial statements of WGL. The following table shows the amounts Washington Gas charged WGL Energy Services for balancing ~~services.~~services which are located in "Utility Operating Revenues".

									Washington Gas - Gas Balancing Service Charges
	Three Months Ended December 31,				Three Months Ended December 31,
(In millions)	2016		2015		2017		2016
Gas balancing service charge	$	6.9	$	7.1	$	2.5	$	6.9

As a result of these balancing services, an imbalance is created for volumes of natural gas received by Washington Gas that are not equal to the volumes of natural gas delivered to customers of the energy marketers. At December 31, 2017 and September 30, 2017, WGL Energy Services recognized accounts ~~payable to~~receivable from Washington Gas of ~~$1.6~~$4.8 million and ~~$0.8~~$1.4 million ~~at December 31, 2016 and September 30, 2016,~~ respectively, related to an imbalance in gas volumes. Due to regulatory treatment, these payables and receivables are not eliminated in the consolidated financial statements of WGL. Refer to Note 1—Accounting Policies of the Notes to Condensed Consolidated Financial Statements of ~~the~~our combined Annual Report on Form 10-K for the fiscal year ended September 30, ~~2016~~2017 for further discussion of these imbalance transactions.

Washington Gas participates in a ~~POR~~purchase of receivables (POR) program as approved by the ~~PSC~~Maryland Public Service Commission (PSC of ~~MD,~~MD), whereby it purchases receivables from participating energy marketers at approved discount rates. In addition, WGL Energy Services participates in POR programs with certain Maryland and Pennsylvania utilities, whereby it sells its receivables to various utilities, including Washington Gas, at approved discount rates. The receivables purchased by Washington Gas are included in “Accounts receivable” in the accompanying balance sheet. Any activity between Washington Gas and WGL Energy Services related to the POR program has been eliminated in the accompanying financial statements for WGL. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Washington Gas had balances of ~~$6.1~~$6.0 million and ~~$4.2~~$3.2 million, respectively, of purchased receivables from WGL Energy ~~Services.~~Services which are located in "Accounts receivable".

NOTE 13. COMMITMENTS AND CONTINGENCIES

REGULATORY CONTINGENCIES

Certain legal and administrative proceedings incidental to our business, including regulatory contingencies, involve WGL and/or its subsidiaries. In our opinion, we have recorded an adequate provision for probable losses or refunds to customers for regulatory contingencies related to these proceedings.

~~District of Columbia~~

Virginia Jurisdiction

~~Investigation into Washington Gas’ Cash Reimbursement to Competitive Service Providers (CSPs).~~Virginia Rate Case. On August 5, 2014, the Office of the People’s Counsel’s (OPC) of DC filed a complaint with the PSC of DC requesting that the Commission open an investigation into Washington Gas’ payments to CSPs to cash-out over-deliveries of natural gas supplies during the 2008-2009 winter heating season. OPC asserted that Washington Gas made excess payments in the amount of $2.4 million to CSPs. On December 19, 2014, the PSC of DC granted the OPC of DC’s request and opened a formal investigation. On October 27, 2015, the PSC of DC issued an order finding that Washington Gas, in performing the cash-out, had violated D.C. Code 34-1101’s requirement that no service shall be provided without Commission approval. The PSC of DC directed Washington Gas to provide calculations showing what the impact would have been had Washington Gas made volumetric adjustments to CSP deliveries as of April 2009, which Washington Gas calculates would result in a refund of approximately $2.4 million, which was recognized by WGL in fiscal year 2015. On February 3, 2016, the PSC of DC issued an order denying OPC’s application for reconsideration and granting in part, and denying in part, Washington Gas’ application for reconsideration. Washington Gas and OPC filed initial briefs on February 18, 2016, and reply briefs on February 29, 2016, on the issue of whether there is a more reasonable way to reconcile the over-deliveries by CSPs such as through volumetric adjustments or through cash payments. On August 11, 2016, The DC Commission issued an order requiring Washington Gas to refund approximately $2.4 million through the Actual Cost Adjustment ("ACA"). On August 26,June 30, 2016, Washington Gas filed an application with the Commonwealth of Virginia State Corporation Commission (SCC of VA) to increase its ~~plan~~base rates for natural gas service by $45.6 million, which includes $22.3 million of revenue associated with natural gas pipeline replacement initiatives previously approved by the SCC of VA and paid by customers through a monthly rider. Additionally, the proposed rate increase included provisions designed to deliver the benefits of natural gas to more customers that include: (i) facilitating conversion to natural gas in locations already served by

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Washington Gas; (ii) expanding the natural gas system to high-growth communities in Virginia and (iii) research and development enabling innovations to enhance service for ~~implementing~~our customers.

Interim rates went into effect, subject to refund, in the ~~$2.4~~December 2016 billing cycle. Intervenors filed testimony on January 31, 2017, Staff of the SCC of VA filed testimony on February 28, 2017 and Washington Gas filed its rebuttal testimony on March 28, 2017. On April 17, 2017, Washington Gas filed with the SCC of VA a unanimous settlement as to a specific annual revenue increase, but not as to a specific return on equity, specific accounting adjustments, or specific ratemaking methodologies, except as otherwise set forth therein. The Stipulation set forth, for purposes of settlement, a base rate increase of $34 million ~~refund within~~(of which $14.1 million represents incremental base rate revenues over and above the inclusion of SAVE Plan costs which were previously recovered through monthly surcharges). For purposes of the settlement, the mid-point of the return on equity range of 9.0-10.0% will be used in any application or filing, other than a ~~12-month period.~~change in base rates, effective December 1, 2016. On June 30, 2017, the Chief Hearing Examiner issued a report recommending that the SCC of VA approve the Stipulation. On September 8, 2017, Washington Gas received a final order from the SCC of VA accepting settlement subject to minor modifications to Washington Gas’ System Expansion Proposals. All parties agreed to a Revised Stipulation filed on September 20, 2017, reflecting the SCC of VA’s denial of one of the System Expansion Proposals and Washington Gas’ withdrawal of the second one. The ~~PSC~~SCC of DCVA issued ~~an Order~~its final order approving the revised stipulation on ~~October 7, 2016, clarifying~~September 25, 2017. Refunds to customers, which have been accrued by Washington ~~Gas' refunding~~Gas at December 31, 2017, will be made related to the interim billings in accordance with the final order. On December 21, 2017, Washington Gas requested and ~~reporting requirements.~~was granted by the SCC of VA a 45-day extension to complete the refunds.

FINANCIAL GUARANTEES

WGL has guaranteed payments primarily for certain commitments on behalf of ~~certain~~some of its subsidiaries. At December 31, 2016, these guarantees totaled $30.7 million, $269.9 million, $74.9 million and $356.8 million for Washington Gas, WGL Energy Services, WGL Energy Systems and WGL Midstream, respectively. At December 31, 2016, WGL also had guarantees on behalf of other subsidiaries totaling $2.1 million. The amount of such guarantees is periodically adjusted to reflect changes in the level of WGL's financial exposure related to these commitments. For all of our financial guarantees, WGL may cancel any or all future obligations upon written notice to the counterparty, but WGL would continue to be responsible for the obligations created under the guarantees prior to the effective date of the cancellation. WGL has also guaranteed payments for certain of our external partners. At December 31, ~~2016,~~2017, the maximum potential amount of future payments under the guarantees for external parties totaled ~~$15.7 million and the fair value of these guarantees was insignificant.~~$0.6 million.

ANTERO CONTRACT

Washington Gas and WGL Midstream ~~began purchasing natural gas on January 1, 2016, from~~contracted in June 2014 with Antero Resources Corporation (Antero) ~~pursuant~~ to ~~certain natural gas purchase contracts. We purchase~~buy gas from Antero at invoiced prices based on an index, ~~specified in the contracts; however, contractual provisions allow either party to notify the other party if it believes the index price is no longer appropriate for the delivery point of the gas,~~ and ~~to trigger the negotiation of~~at a new index price. If negotiations are unsuccessful, then the contract requires binding arbitration proceedings. When a new index price is determined under the contract, a "true up" of prior period invoices is required back to the date of initial notification.

~~On November 16, 2015, due to significant changes to natural gas markets in and around the~~ delivery point, specified in the contracts. Since deliveries began, however, the index price paid has been more than the fair market value at the same physical delivery point, resulting in losses to date of $28.4 million. Accordingly, Washington Gas and WGL Midstream notified Antero that it sought to apply a provision of the contracts ~~we provided notice to Antero invoking the provision requiring the negotiation of~~that would permit a new ~~contractual~~ index ~~price. To date, negotiations~~to be established. Antero objected, claiming that the contract provisions permitting re-pricing did not apply, unless Antero itself chose to sell gas at cheaper prices at the delivery point (which Antero claimed it had not). The dispute was arbitrated in January 2017, and the arbitral tribunal ruled in favor of Antero on the applicability of the re-pricing mechanism. However, the tribunal ruled that it lacked authority to determine whether Antero was in breach of its obligation to deliver gas to Washington Gas and WGL Midstream at a point where they could obtain the higher pricing. Accordingly, Washington Gas and WGL Midstream filed suit in state court in Colorado for a determination of this issue. The state court granted Antero’s motion to dismiss the case and the case is currently on appeal.

Separately, Antero has initiated suit against Washington Gas and WGL Midstream, claiming that they have ~~been unsuccessful~~failed to purchase specified daily quantities of gas and ~~we are currently involved~~seeking alleged cover damages exceeding $80 million as of October 24, 2017, which amount continues to accumulate daily according to Antero's complaint. Washington Gas and WGL Midstream oppose both the validity and amount of Antero’s claim. WGL believes the probability that Antero could succeed in ~~arbitration proceedings to resolve this pricing dispute. Our Consolidated Financial Statements do not reflect the favorable effects~~collecting these penalties is remote and therefore, no accrual was made as of ~~a change in the contractual index price. Through~~ December 31, ~~2016,~~2017. In December 2017, WGL Midstream ~~has incurred approximately $22.0 million in losses associated~~amended its purchase contract with ~~Antero’s use~~Antero and, effective February 1, 2018, will no longer be obligated to purchase gas at the delivery point that is the subject of ~~the disputed index price. An initial decision on the arbitration proceedings is scheduled for on or before February 13, 2017.~~these disputes.

SILVER SPRING, MARYLAND INCIDENT

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

damages stated to be less than $5 million for, among others, property damage and various counts relating to the loss of the use of the premises. ~~Both actions allege causes~~Two of ~~action for negligence, product liability, and declaratory relief. Eighteen civil actions have been~~the 40 cases were originally filed in the ~~Circuit~~District of Columbia Superior Court, ~~for Montgomery County,~~but were dismissed. Those two actions were re-filed in Maryland ~~seeking unspecified damages for personal injury and property damage.~~on November 27, 2017. We maintain excess liability insurance coverage from highly-rated insurers, subject to a nominal self-insured retention. We believe that this coverage will be sufficient to cover any significant liability to it that may result from this incident. Management is unable to determine a range of potential losses that are reasonably possible of occurring and therefore we have not recorded a reserve associated with this incident. Washington Gas was invited by the NTSB to be a party to the investigation and in that capacity, continues to work closely with the NTSB to help determine the cause of this incident.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~

NOTE 14. PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS

The following table shows the components of net periodic benefit costs (income) recognized in our financial statements during the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

																									Components of Net Periodic Benefit Costs (Income)
	Three Months Ended December 31,												Three Months Ended December 31,
	2016						2015						2017						2016
(In millions)	Pension Benefits			Health and Life Benefits			Pension Benefits			Health and Life Benefits			Pension Benefits			Health and Life Benefits			Pension Benefits			Health and Life Benefits
Service cost	$	4.1		$	1.4		$	3.5		$	1.1		$	3.7		$	1.3		$	4.1		$	1.4
Interest cost	9.6			2.9			10.3			3.3			9.9			2.9			9.6			2.9
Expected return on plan assets	(10.3		)	(5.5		)	(10.2		)	(5.1		)	(10.6		)	(5.9		)	(10.3		)	(5.5		)
Amortization of prior service cost (credit)	0.1			(4.4		)	0.1			(4.4		)	0.1			(4.4		)	0.1			(4.4		)
Amortization of net actuarial loss	5.5			0.2			4.2			0.3			3.9			—			5.5			0.2
Net periodic benefit cost (income)	9.0			(5.4		)	7.9			(4.8		)	7.0			(6.1		)	9.0			(5.4		)
Amount allocated to construction projects	(1.6		)	1.2			(1.3		)	1.0			(1.1		)	1.0			(1.6		)	1.2
Amount deferred as regulatory asset/liability—net	1.8			(0.1		)	1.8			(0.1		)	1.7			—			1.8			(0.1		)
Amount charged (credited) to expense	$	9.2		$	(4.3	)	$	8.4		$	(3.9	)	$	7.6		$	(5.1	)	$	9.2		$	(4.3	)

Amounts included in the line item “Amount deferred as regulatory asset/liability-net,” as shown in the table above, represent the amortization of previously unrecovered costs of the applicable pension benefits or the health and life benefits as approved in the District of Columbia. ~~These~~We expect the balances ~~are being~~to be fully amortized ~~over a five year period.~~by October 2019.

NOTE 15. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following tables show the changes in accumulated other comprehensive income (loss) for WGL and Washington Gas by component for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.


WGL Holdings, Inc. Changes in Accumulated Other Comprehensive Loss by Component	WGL Holdings, Inc. Changes in Accumulated Other Comprehensive Loss by Component						WGL Holdings, Inc. Changes in Accumulated Other Comprehensive Loss by Component
(In thousands)	Three Months Ended December 31,						Three Months Ended December 31,
	2016			2015			2017			2016
Beginning Balance	$	(38,539	)	$	(14,236	)	$	(5,997	)	$	(38,539	)
Qualified cash flow hedging instruments^(a)	49,455			1,084			52			49,455
Change in prior service credit^(b)	(217		)	(214		)	(274		)	(217		)
Amortization of actuarial loss^(b)	588			419			527			588
Current-period other comprehensive income	49,826			1,289			305			49,826
Income tax expense related to other comprehensive income	20,413			531			61			20,413
Ending Balance	$	(9,126	)	$	(13,478	)	$	(5,753	)	$	(9,126	)


^(a)	Cash flow hedging instruments represent interest rate swap agreements related to debt issuances. Refer to Note 8- Derivative and Weather-related Instruments of the Notes to Condensed Consolidated Financial Statements for further discussion of the interest rate swap agreements.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)


^(b)	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost. Refer to Note 14- Pension and other post-retirement benefit plans of the Notes to Condensed Consolidated Financial Statements for additional details.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (continued)~~

~~Notes to Condensed Consolidated Financial Statements (Unaudited)~~


Washington Gas Light Company Changes in Accumulated Other Comprehensive Loss by Component	Washington Gas Light Company Changes in Accumulated Other Comprehensive Loss by Component						Washington Gas Light Company Changes in Accumulated Other Comprehensive Loss by Component
(In thousands)	Three Months Ended December 31,						Three Months Ended December 31,
	2016			2015			2017			2016
Beginning Balance	$	(7,830	)	$	(6,712	)	$	(4,522	)	$	(7,830	)
Change in prior service credit^(a)	(217		)	(214		)	(274		)	(217		)
Amortization of actuarial loss^(a)	588			419			527			588
Current-period other comprehensive income	371			205			253			371
Income tax expense related to other comprehensive income	147			81			61			147
Ending Balance	$	(7,606	)	$	(6,588	)	$	(4,330	)	$	(7,606	)


^(a)	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost. Refer to Note 14-Pension and other post-retirement benefit plans of the Notes to Condensed Consolidated Financial Statements for additional details.

NOTE 16. SUPPLEMENTAL CASH FLOW INFORMATION

The following tables detail the changes in operating assets and liabilities from operating activities, cash payments that have been included in the determination of earnings and non-cash investing and financing activities:

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

WGL Holdings Inc.



For the three months ended December 31,	2017			2016
(In thousands)
CHANGES IN OPERATING ASSETS AND LIABILITIES
Accounts receivable and unbilled revenues—net	$	(237,959	)	$	(203,098	)
Gas costs and other regulatory assets/liabilities—net	38,503			35,400
Storage gas	37,006			(1,709		)
Prepaid taxes	(7,275		)	(7,901		)
Accounts payable and other accrued liabilities	40,575			87,512
Customer deposits and advance payments	(10,683		)	(12,611		)
Accrued taxes	18,019			11,149
Other current assets	(15,107		)	(21,887		)
Other current liabilities	(2,662		)	(22,569		)
Deferred gas costs—net	(26,023		)	(42,189		)
Deferred assets—other	(18,483		)	(4,431		)
Deferred liabilities—other	7,061			(16,194		)
Pension and other post-retirement benefits	(291		)	(3,583		)
Other—net	1,917			771
Changes in operating assets and liabilities	$	(175,402	)	$	(201,340	)
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Income taxes paid (refunded)—net	$	(956	)	$	(4,678	)
Interest paid	$	10,392		$	4,156
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Extinguishment of project debt financing	$	—		$	(29,871	)
Capital expenditure accruals included in accounts payable and other accrued liabilities	$	34,371		$	55,602
Dividends paid in common stock	$	—		$	1,362
Stock based compensation	$	11,251		$	6,564
Transfer of investments to fixed assets	$	10,054		$	3,959
Transfer of notes receivables to investments	$	—		$	10,031

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

Washington Gas



For the three months ended December 31,	2017			2016
(In thousands)
CHANGES IN OPERATING ASSETS AND LIABILITIES
Accounts receivable, unbilled revenues and receivables from associated companies—net	$	(167,271	)	$	(133,605	)
Gas costs and other regulatory assets/liabilities—net	38,503			35,400
Storage gas	7,793			(6,029		)
Prepaid taxes	(8,549		)	(11,934		)
Accounts payable and other accrued liabilities, including payables to associated companies	15,409			49,444
Customer deposits and advance payments	(9,483		)	(8,410		)
Accrued taxes	34,146			9,307
Other current assets	(9,904		)	(9,456		)
Other current liabilities	(124		)	(29,859		)
Deferred gas costs—net	(26,023		)	(42,189		)
Deferred assets—other	(17,649		)	(2,766		)
Deferred liabilities—other	539			(16,657		)
Pension and other post-retirement benefits	(442		)	(3,586		)
Other—net	1,691			510
Changes in operating assets and liabilities	$	(141,364	)	$	(169,830	)
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Income taxes paid (refunded)—net	$	(958	)	$	(6,449	)
Interest paid	$	2,977		$	683
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Extinguishment of project debt financing	$	—		$	(29,871	)
Capital expenditure accruals included in accounts payable and other accrued liabilities	$	25,325		$	40,601

NOTE 17. PLANNED MERGER WITH ALTAGAS LTD.

On January 25, 2017, WGL entered into an agreement and plan of merger (Merger Agreement) to combine with AltaGas in an all cash transaction valued at approximately $6.4 billion. The Merger Agreement provides for the merger of a newly formed indirect wholly-owned subsidiary of AltaGas with and into WGL, with WGL continuing as the surviving corporation in the merger (the Merger) and becoming an indirect wholly-owned subsidiary of AltaGas. Subject to the terms and conditions set forth in the Merger Agreement, at the Effective Time (as defined in the Merger Agreement) of the Merger, WGL shareholders will receive $88.25 in cash, without interest, for each share of WGL common stock issued and outstanding immediately prior to the Effective Time (as defined in the Merger Agreement). The Boards of Directors of each of WGL and AltaGas have unanimously approved the Merger, which is expected to close during the second calendar quarter of 2018.

Consummation of the Merger is subject to the satisfaction or waiver of specified closing conditions, including, among others, the approval of the Merger by the holders of more than two-thirds of the outstanding shares of WGL common stock, which approval occurred on May 10, 2017, and approvals required from certain antitrust and other regulatory bodies. A status of each of these conditions is described below. The Merger Agreement also contains customary representations, warranties and covenants of both WGL and AltaGas. These covenants include, among others, an obligation on behalf of WGL to operate its business in the ordinary course until the Merger is consummated, subject to certain exceptions.

Under the terms of the Merger Agreement, the Outside Date (as defined in the Merger Agreement) for consummation of the Merger was January 25, 2018. The Merger Agreement permits either WGL or AltaGas to extend the term of the Merger Agreement should the Merger not be consummated by such date. On January 11, 2018, WGL and AltaGas mutually agreed in writing to extend this Outside Date to July 23, 2018. The Merger Agreement also contains certain other termination rights for both AltaGas and WGL. Under specified circumstances, AltaGas would be required to pay a termination fee of $205 million, $182 million, or $68 million (depending on the specific circumstances of termination) to WGL. Under other specific circumstances as outlined in the Merger Agreement, WGL would be required to pay AltaGas a termination fee of $136 million.

In connection with entering into the Merger Agreement, WGL entered into a subscription agreement with AltaGas, pursuant to which WGL agreed, upon the occurrence of certain conditions, to issue and sell to AltaGas up to an aggregate of 15,000 shares of Series A Non-Voting Non-Convertible Perpetual Preferred Stock (Non-Voting Preferred Stock) for a purchase price of

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (continued)

Notes to Condensed Consolidated Financial Statements (Unaudited)

$10,000 per share. If the consolidated debt to total capitalization ratio is forecasted to be in excess of 62% in any subsequent quarterly period, AltaGas will purchase a number of shares of Non-Voting Preferred Stock to produce a forecasted ratio equal to 62%, but not more than 5,000 shares in any single quarter or more than 15,000 shares in the aggregate. If the Merger Agreement is terminated or the Outside Date expires, no subscription will be made after the date of termination or expiration, and WGL will have six months thereafter to redeem any Non-Voting Preferred Stock previously issued.

Merger Approval Proceedings

District of Columbia

On April 24, 2017, AltaGas, WGL and Washington Gas ("Applicants") filed an application with the PSC of DC seeking approval of the Merger Agreement. In an order issued on April 25, 2017, the PSC of DC scheduled a procedural conference on May 18, 2017 with the Staff of the PSC of DC and interested parties to consider the factors to be considered in the case to determine whether the Merger is in the public interest, identify factual issues in dispute and consider a procedural schedule for the proceeding. To approve the Merger Agreement, the PSC of DC must find that the Merger taken as a whole is in the public interest. In the April 25, 2017 order, the PSC of DC stated that in making this determination, it has balanced the interests of shareholders and investors with ratepayers and the community; determined that benefits to shareholders must not come at the expense of ratepayers; and found that to be approved, the transaction must produce a direct and tangible benefit to ratepayers. It stated further that in determining whether the public interest requirements are met, the PSC of DC has in past merger cases identified seven factors it has considered in reviewing each transaction, including the effects of the transaction on (i) ratepayers, shareholders, the financial health of the utilities standing alone and as merged, and the economy of the District; (ii) utility management and administrative operations; (iii) public safety and the safety and reliability of services; (iv) risks associated with all of the Applicants' affiliated non-jurisdictional business operations; (v) the PSC of DC's ability to regulate Washington Gas effectively; (vi) competition in the local retail and wholesale markets that impact the District and District ratepayers; and (vii) conservation of natural resources and preservation of environmental quality. The law of the District of Columbia does not impose any time limit on the PSC of DC’s review of the Merger. The District of Columbia Office of the People’s Counsel, the District of Columbia Government and other intervenors filed testimony with the PSC of DC opposing the application on September 29, 2017. The Applicants filed rebuttal testimony on October 27, 2017. Evidentiary hearings took place before the PSC of DC on December 5 through December 15, 2017. An order is expected by the second calendar quarter of 2018.

Maryland

On April 24, 2017, AltaGas, WGL and Washington Gas ("Applicants") filed an application with the PSC of MD seeking approval of the Merger Agreement. On April 26, 2017, the PSC of MD issued an order scheduling a pre-hearing conference on May 30, 2017, to set a procedural schedule for the proceeding, to consider any petition to intervene that have been filed, and to consider any other preliminary matters requested by the parties. Maryland law requires the PSC of MD to approve a merger subject to its review if it finds that the merger agreement is consistent with the public interest, convenience and necessity, including benefits and no harm to consumers. In making this determination, the PSC of MD is required to consider the following criteria: (i) the potential impact of the acquisition on rates and charges paid by customers and on the services and conditions of operation of the public service company; (ii) the potential impact of the acquisition on continuing investment needs for the maintenance of utility services, plant, and related infrastructure; (iii) the proposed capital structure that will result from the acquisition, including allocation of earnings from Washington Gas; (iv) the potential effects on employment; (v) the projected allocation of any savings that are expected between shareholders and rate payers; (vi) issues of reliability, quality of service, and quality of customer service; (vii) the potential impact of the acquisition on community investment; (viii) affiliate and cross-subsidization issues; (ix) the use or pledge of utility assets for the benefit of an affiliate; (x) jurisdictional and choice-of-law issues; (xi) whether it is necessary to revise the PSC of MD's ring-fencing and code of conduct regulations in light of the acquisition; and (xii) any other issues the PSC of MD considers relevant to the assessment of the acquisition in relation to the public interest, convenience, and necessity. The Staff of the PSC of MD, the Maryland Office of People’s Counsel and other intervenors filed testimony opposing the application on August 14, 2017. The Applicants filed rebuttal testimony with the PSC of MD on September 11, 2017. Evidentiary hearings were held before the PSC of MD on October 3, 2017 through October 16, 2017. Initial briefs and reply briefs were filed on November 6, 2017 and November 16, 2017, respectively. The PSC of MD is required to issue an order within 180 days of the date the application was filed, but may extend the date by 45 days for good cause. The PSC of MD issued an order extending the date for review. On December 1, 2017, AltaGas and Washington Gas entered into a settlement agreement with several major parties in the merger application proceedings pending before the PSC of

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 1—Financial Statements (concluded)

Notes to Condensed Consolidated Financial Statements (Unaudited)

MD. The PSC of MD will conduct evidentiary hearings in February 2018, to review the settlement agreement reached in December and is expected to render a final decision by April 2018.

Virginia

On April 24, 2017, AltaGas, WGL and Washington Gas, filed a petition with the SCC of VA seeking approval of the Merger Agreement. Virginia law provides that, if the SCC of VA determines, with or without hearing, that adequate service to the public at just and reasonable rates will not be impaired or jeopardized by granting the petition for approval, then the SCC of VA shall approve a merger with such conditions that the SCC of VA deems to be appropriate in order to satisfy this standard. On October 20, 2017, the SCC of VA issued an order approving the merger, subject to accounting, financial, and safety related requirements to which joint applicants agree.

On December 21, 2017, Washington Gas filed an application with the SCC of VA for approval of a new service agreement between Washington Gas and AltaGas Services (U.S.) Inc. ("ASUS") for Washington Gas to receive centralized corporate services, and to authorize affiliate transactions for a period of five years. An order is expected on or before March 21, 2018.

Committee on Foreign Investment in the United States (CFIUS)

On April 24, 2017, AltaGas, WGL and Washington Gas, filed a joint voluntary notice with the CFIUS. This notice was approved on August 18, 2017.

HSR

On June 15, 2017, AltaGas and WGL submitted to the Federal Trade Commission and the Antitrust Division of the Department of Justice completed Premerger Notification and Report Forms with respect to the proposed acquisition by AltaGas of certain voting securities of WGL. The waiting period required by Section 7A(b)(1) of the Clayton Act, 15 U.S.C. Section 18a(b)(1) (aka the Hart-Scott Rodino Antitrust Improvements Act of 1976, as amended) expired on July 17, 2017. The expiration of the Clayton Act’s waiting period deems the Merger approved by the Federal Trade Commission and the Department of Justice.

FERC

On April 24, 2017, AltaGas and WGL Energy Services submitted to FERC a Joint Application for Authorization of Disposition of Jurisdictional Assets and Merger under Section 203 of the Federal Power Act. Under that section, FERC shall approve a merger if it finds that the proposed transaction will be consistent with the public interest. In making this determination, the FERC will consider the following criteria: (i) horizontal competition analysis; (ii) vertical competition issues; (iii) no adverse effect on rates; (iv) no adverse effect on regulation; and (v) no improper cross-subsidization. On July 6, 2017, the FERC issued an order authorizing the Merger, concluding that the proposed transaction is consistent with the public interest.

NOTE ~~16.~~18. SUBSEQUENT EVENTS

~~Merger Agreement with AltaGas~~

On January 25, 2017, WGL entered into an agreement and plan of merger (Merger Agreement) to be acquired by AltaGas in an all cash transaction valued at approximately $6.4 billion. The Merger Agreement provides for the merger of a newly formed indirect wholly-owned subsidiary of AltaGas with and into WGL, with WGL continuing as the surviving corporation in the merger (the Merger). Subject to the terms and conditions set forth in the Merger Agreement, at the Effective Time (as defined in the Merger Agreement) of the Merger, WGL shareholders will receive $88.25 in cash, without interest, for each share of WGL common stock issued and outstanding immediately prior to the Effective Time (as defined in the Merger Agreement). The Board of Directors of WGL and AltaGas have unanimously approved the merger, which is expected to close in the second quarter of 2018.Constitution Pipeline

~~Consummation of~~On January 11, 2018, the ~~Merger is subject to~~FERC denied the satisfaction or waiver of specified closing conditions, including, among others, the approval of the Merger by the holders of more than two-thirds of the outstanding shares of WGL common stock, and approvals required from the Public Service Commission of the District of Columbia (PSC of DC), the Maryland Public Service Commission (PSC of MD) and the Virginia State Corporation Commission (SCC of VA). WGL and AltaGas also plan to submit the transactionSection 401 Water Quality Certification for review by the Committee on Foreign Investment in the United States. The Merger Agreement will also be subject to Federal Energy Regulatory Commission (FERC) approval, and expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR). The Merger Agreement also contains customary representations, warranties and covenants of both WGL and AltaGas. These covenants include, among others, an obligation on behalf of WGL to operate its business in the ordinary course until the Merger is consummated, subject to certain exceptions.

The Merger Agreement may be terminated by each of WGL and AltaGas under certain circumstances, including if the merger is not consummated by January 25, 2018 (subject to a 180 day extension by either party subject to certain conditions being met). The Merger Agreement also contains certain additional termination rights for both AltaGas and WGL, and provides that, upon termination of the Merger Agreement under specified circumstances, AltaGas would be required to pay a termination fee of $205 million, $182 million, or $68 million (depending on the specific circumstances of termination) to WGL. WGL would be required to pay AltaGas a termination fee of $136 million, only under specific circumstances as outlined in the Merger Agreement.

~~In connection with entering into the Merger Agreement, WGL entered into a subscription agreement with AltaGas,~~Constitution in which WGL ~~agreed~~Midstream holds a 10% membership interest. Constitution stated that it plans to ~~issue~~appeal the decision and ~~sell~~seek a rehearing. In light of the denial of the certification and the anticipated actions to ~~AltaGas up~~challenge the decision, Refer to ~~an aggregate~~Note 11 — Other Investments of ~~15,000 shares of Series A Non-Voting Non-Convertible Perpetual Preferred Stock (Non-Voting Preferred Stock) for a purchase price of $10,000 per share. If~~ the consolidated debt to total capitalization ratio is forecasted to be in excess of 62% at December 31, 2017 or quarterly thereafter, AltaGas will purchase a number of shares to produce a forecasted ratio equal to 62%, but not more than 5,000 shares in any single quarter or more than 15,000 shares in the aggregate. If the Merger Agreement is terminated or the Outside Date (as defined in the Merger

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 1—Financial Statements (concluded)~~

Notes to Condensed Consolidated Financial Statements ~~(Unaudited)~~

~~Agreement) expires, no subscription will be made after the date~~for further discussion of ~~termination or expiration, and WGL will have six months thereafter to redeem any Non-Voting Preferred Stock previously issued.~~

~~Credit Agreement with Branch Banking & Trust Company (BB&T)~~Constitution.

On January 26, 2017, WGL entered into a credit agreement with BB&T providing for a $50.0 million term loan. The credit agreement provides for a maturity date of two years, with a one year extension option with the lender's approval. WGL will use the loan proceeds for general non-utility corporate purposes, including capital investments. Similar to the existing revolving credit facility, the credit agreement has a financial covenant where the ratio of its consolidated financial indebtedness to its consolidated total capitalization cannot exceed 65% at any time.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations~~

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

INTRODUCTION

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

This Management’s Discussion and Analysis of Financial Condition and Results of Operations (Management’s Discussion) analyzes the financial condition, results of operations and cash flows of WGL and its subsidiaries. It also includes management’s analysis of past financial results and potential factors that may affect future results, potential future risks and approaches that may be used to manage them. Except where the content clearly indicates otherwise, “WGL,” “we,” “us” or “our” refers to the holding company or the consolidated entity of WGL Holdings, Inc. and all of its subsidiaries.

Management’s Discussion is divided into the following two major sections:

WGL—This section describes the financial condition and results of operations of WGL Holdings, Inc. and its subsidiaries on a consolidated basis. It includes discussions of our regulated operations, including Washington Gas and Hampshire, ~~Gas Company (Hampshire),~~ and our non-utility operations.

Washington Gas—This section describes the financial condition and results of operations of Washington Gas, a subsidiary of WGL, which comprises the majority of the regulated utility segment.

Both sections of Management’s Discussion—WGL and Washington Gas—are designed to provide an understanding of our operations and financial performance and should be read in conjunction with the respective company’s financial statements and the combined Notes to Condensed Consolidated Financial Statements in this quarterly report as well as our combined Annual Report on Form 10-K for WGL and Washington Gas for the fiscal year ended September 30, ~~2016 (2016 Annual Report).~~2017.

Unless otherwise noted, earnings per share amounts are presented on a diluted basis, and are based on weighted average common and common equivalent shares outstanding. Our operations are seasonal and, accordingly, our operating results for the interim periods presented are not indicative of the results to be expected for the full fiscal year.

EXECUTIVE OVERVIEW

Introduction

WGL, through its subsidiaries, sells and delivers natural gas and provides a variety of energy-related products and services to customers primarily in the District of Columbia and the surrounding metropolitan areas in Maryland and Virginia. In addition to our primary markets, WGL’s non-utility subsidiaries provide customized energy solutions across a much wider footprint, with business activities across the United States.

WGL has four operating segments:

regulated utility;

retail energy-marketing;

commercial energy ~~systems~~systems; and

midstream energy services.

Regulated Utility Operating Segment

The regulated utility operating segment is composed of our core subsidiary, Washington Gas. Washington Gas engages in the delivery and sale of natural gas that is regulated by regulatory commissions in the District of Columbia, Maryland and Virginia. During the ~~first~~ quarter, our utility earnings ~~were higher, primarily due to:~~reflect: (i) ~~a continued increase in~~higher customer ~~growth of approximately 13,200 meters,~~growth; (ii) new base rates ~~subject to refund,~~ in Virginia and the District of Columbia; and (iii)~~higher~~ lower operation and maintenance expenses. These favorable variances were more than offset by lower realized and unrealized margins associated with our asset optimization program ~~and~~ ~~(iv)~~ ~~higher rate recovery related to our accelerated pipe replacement programs. These favorable variances were partially offset by~~as well as higher depreciation ~~expense related to the growth in our utility plant~~ and ~~operation and maintenance~~amortization expenses.

Retail Energy-Marketing Operating Segment

We offer competitively priced natural gas, electricity and energy from renewable sources to customers through WGL Energy Services, our non-utility retail energy-marketing subsidiary.During the first quarter, this segment saw lower earnings due to:(i) lower realized electric margins due to lower average unit margins and lower sales volume, (ii) higher operating expenses, and (iii) lower unrealized mark-to-market valuations on energy-related derivatives.

44Commercial Energy Systems Operating Segment

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

~~We offer competitively priced natural gas, electricity and energy from renewable sources to customers through WGL Energy Services, our non-utility retail energy-marketing subsidiary.~~EBIT increased this quarter primarily due to higher unrealized mark-to-market valuations related to fluctuating market prices for energy-related derivatives in the current period. We also benefited from increased electric margins due to lower capacity charges this quarter compared to the same quarter in the prior fiscal year. Partially offsetting the favorable electric margins were lower natural gas margins due to lower realized margins associated with natural gas portfolio optimization.

~~Commercial Energy Systems Operating Segment~~

Through WGL Energy Systems and WGSW, we offer efficient and sustainable commercial energy solutions focused on owning and operating distributed generation assets such as Solar Photovoltaic (Solar PV) systems and upgrading energy related systems of large government and commercial facilities. ~~This~~During the first quarter, this segment ~~saw increased EBIT compared~~continued to ~~the same quarter in the prior fiscal year due~~deliver improved results. Growth was attributed to ~~continued earnings growth from our nationwide distributed generation assets in service and increased~~higher earnings from our ~~alternative energy investments. The earnings growth was~~investment distributed generation business, including investments in tax equity partnerships, partially offset by ~~lower revenues from the energy-efficient contracting business due to the completion of certain projects earlier~~higher operating expenses in ~~the quarter as compared to the same quarter in the prior fiscal year.~~our commercial distributed generation business.

Midstream Energy Services Operating Segment

WGL Midstream specializes in the investment, management, development and optimization of natural gas storage and transportation midstream infrastructure projects. ~~During~~Improved results for the first quarter ~~EBIT decreased~~ primarily due to lower valuations on derivative contracts and lower realized margins on our transportation strategies. Lower realized margins on our transportation strategies are primarily a result of losses associated with the index price used in certain gas purchases from Antero Resources Corporation, which is the subject of an arbitration proceeding. Additionally we saw lowerreflect: (i) higher valuations and realized margins related to storage inventory and the associated economic hedging ~~transactions as well as lower earnings~~transactions; (ii) higher realized and unrealized margins on our transportation strategies; and (iii) higher income related to our pipeline ~~investments this quarter compared~~investments.

Other Activities

Activities and transactions that are not significant enough on a stand-alone basis to ~~the same period in the prior year due to a charge off~~warrant treatment as an operating segment, and that do not fit into one of ~~debt related~~our four operating segments, are aggregated as “Other Activities” and are included as part of non-utility operations. Administrative and business development costs associated with WGL and Washington Gas Resources are also included in “Other Activities.” Decreased results for the quarter primarily relates to higher costs associated with the ~~retirement of project debt.~~proposed Merger with AltaGas.

Planned Merger with AltaGas

On January 25, 2017, WGL entered into athe Merger Agreement to ~~be acquired by~~combine with AltaGas in an all cash transaction valued at approximately $6.4 billion. ~~The Board of Directors of WGL and AltaGas have unanimously approved the merger, which is expected to close in the second quarter of 2018.~~ Subject to the conditions set forth in the Merger Agreement, including approvals by the PSC of MD and the PSC of DC, at the ~~effective time~~Effective Time (as defined in the Merger Agreement) of the Merger, ~~WGL's~~WGL shareholders will receive $88.25 in cash, without interest, for each share of WGL common stock issued and outstanding immediately prior to the Effective Time. The ~~Merger is subject to approval by WGL's shareholders~~Boards of Directors of each of WGL and ~~the receipt of certain antitrust and other regulatory approvals. Should WGL terminate~~AltaGas have unanimously approved the Merger, ~~Agreement~~which is expected to close in ~~specified circumstances, WGL may be obligated to pay AltaGas a termination fee~~the second calendar quarter of ~~$136 million.~~2018.

For further information on the ~~merger,~~Merger, see "Safe Harbor and ~~Forward Looking~~Forward-Looking Statements" in the Introduction and Item I, Note 1617 — ~~Subsequent Events~~Planned Merger with AltaGas Ltd. to the ~~condensed consolidated financial statements and Part II, Item 1A. Risk Factors, in this Form 10-Q.~~Condensed Consolidated Financial Statements.

CRITICAL ACCOUNTING POLICIES

Preparation of financial statements and related disclosures in compliance with Generally Accepted Accounting Principles in the United States of America requires the selection and the application of appropriate technical accounting guidance to the relevant facts and circumstances of our operations, as well as our use of estimates to compile the consolidated financial statements. The application of these accounting policies involves judgment regarding estimates and projected outcomes of future events, including the likelihood of success of particular regulatory initiatives, the likelihood of realizing estimates for legal and environmental contingencies, and the probability of recovering costs and investments in both the regulated utility and non-regulated business segments.

We have identified the following critical accounting policies that require our judgment and estimation, where the resulting estimates may have a material effect on the consolidated financial statements:

accounting for unbilled revenue;

accounting for regulatory operations — regulatory assets and liabilities;

accounting for income taxes;

accounting for contingencies;

accounting for derivatives;

accounting for fair value instruments;

accounting for investments;

impairment of long-lived assets;

45principles of consolidation and non-controlling interests and

accounting for pension and other post-retirement benefit plans.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

~~accounting for investments;~~

~~principles of consolidation and non-controlling interests and~~

~~accounting for pension and other post-retirement benefit plans.~~

For a description of these critical accounting policies, refer to Management’s Discussion within our combined Annual Report on Form 10-K for WGL and Washington Gas for the ~~2016 Annual Report.~~fiscal year ended September 30, 2017. There were no new critical accounting policies or changes to our critical accounting policies during the three month period ended December 31, ~~2016.~~2017.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

WGL HOLDINGS, INC.

RESULTS OF OPERATIONS—Three Months Ended December 31, ~~2016~~2017 vs. December 31, ~~2015~~2016

Our chief operating decision maker utilizes earnings before interest and tax (EBIT) as the primary measure of profit and loss in assessing the results of each segment’s operations. EBIT includes operating income, other income (expense) and earnings from unconsolidated affiliates and is adjusted by amounts attributable to non-controlling interests. We believe that our use of EBIT enhances the ability to evaluate segment performance because it excludes interest and income tax expense, which are affected by corporate-wide strategies such as capital financing and tax sharing allocations.

EBIT should not be considered an alternative to, or a more meaningful indicator of our operating performance than, net income. Refer to summary results below for a reconciliation of EBIT to net income applicable to common stock.

Summary Results

For the three months ended December 31, ~~2016,~~2017, WGL reported net income applicable to common stock of ~~$58.0~~$138.0 million, or ~~$1.13~~$2.68 per share, compared to net income of ~~$68.2~~$58.0 million, or ~~$1.36~~$1.13 per share, reported for the three months ended December 31, ~~2015.~~2016. For each of the twelve month periods ended December 31, ~~2016~~2017 and ~~2015,~~2016, we earned a return on average common equity of ~~11.5%~~17.9% and ~~10.7%~~11.5%, respectively. The income tax expense for the three months ended December 31, 2017 includes $52.9 million benefit resulting from the re-measurement of accumulated deferred income taxes in connection with the Tax Act. Refer to the "Consolidated Income Taxes" section below for a detailed discussion of the Tax Act.

The following table summarizes our EBIT by operating segment for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

																			Analysis of Consolidated Results
	Three Months Ended December 31,						Increase/			Three Months Ended December 31,						Increase/
(In millions)	2016			2015			(Decrease)			2017			2016			(Decrease)
EBIT:
Regulated utility	$	102.7		$	99.3		$	3.4		$	98.4		$	102.7		$	(4.3	)
Retail energy-marketing	29.2			(0.5		)	29.7			3.7			29.2			(25.5		)
Commercial energy systems	4.7			0.9			3.8			5.6			4.7			0.9
Midstream energy services	(28.5		)	20.8			(49.3		)	22.2			(28.5		)	50.7
Other activities	(1.2		)	(0.7		)	(0.5		)	(4.2		)	(1.2		)	(3.0		)
Intersegment eliminations	1.1			—			1.1			1.7			1.1			0.6
Total	$	108.0		$	119.8		$	(11.8	)	$	127.4		$	108.0		$	19.4
Interest expense	16.2			12.8			3.4			20.2			16.2			4.0
Income tax expense	33.5			38.5			(5.0		)
Income tax (benefit) expense										(31.1		)	33.5			(64.6		)
Dividends on Washington Gas preferred stock	0.3			0.3			—			0.3			0.3			—
Net income applicable to common stock	$	58.0		$	68.2		$	(10.2	)	$	138.0		$	58.0		$	80.0
EARNINGS PER AVERAGE COMMON SHARE
Basic	$	1.13		$	1.37		$	(0.24	)	$	2.69		$	1.13		$	1.56
Diluted	$	1.13		$	1.36		$	(0.23	)	$	2.68		$	1.13		$	1.55

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Regulated Utility Operating Results

The following table summarizes the regulated utility segment’s financial data for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

														Regulated Utility Financial Data
	Three Months Ended December 31,				Increase/		Three Months Ended December 31,				Increase/
(In millions)	2016		2015		(Decrease)		2017		2016		(Decrease)
Utility net revenues⁽¹⁾:
Operating revenues	$	334.0	$	295.2	$	38.8	$	377.5	$	334.0	$	43.5
Less: Cost of gas	82.4		57.1		25.3		124.7		82.4		42.3
Revenue taxes	22.1		19.2		2.9		24.0		22.1		1.9
Total utility net revenues	229.5		218.9		10.6		228.8		229.5		(0.7		)
Operation and maintenance	81.2		78.3		2.9		78.4		81.2		(2.8		)
Depreciation and amortization	30.6		27.6		3.0		34.1		30.6		3.5
General taxes and other assessments	14.2		13.5		0.7		16.1		14.2		1.9
Other expenses—net	0.8		0.2		0.6		1.8		0.8		1.0
EBIT	$	102.7	$	99.3	$	3.4	$	98.4	$	102.7	$	(4.3	)

⁽¹⁾We utilize utility net revenues, calculated as revenues less the associated cost of energy and applicable revenue taxes, to assist in the analysis of profitability for the regulated utility segment. The cost of the natural gas commodity and revenue taxes are generally included in the rates that Washington Gas charges to customers as reflected in operating revenues. Accordingly, changes in the cost of gas and revenue taxes associated with sales made to customers generally have no direct effect on utility net revenues, operating income or net income. Utility net revenues should not be considered an alternative to, or a more meaningful indicator of our operating performance than, operating income. Additionally, utility net revenues may not be comparable to similarly titled measures of other companies.

~~The comparison in~~ EBIT ~~primarily~~ reflects the following:

~~increased~~higher customer growth;

~~higher revenues attributed to colder weather and favorable effects of natural gas consumption patterns in the District of Columbia;~~

new base rates in ~~Virginia;~~

~~higher realized margins associated with our asset optimization program~~Virginia and the District of Columbia; and

~~higher rate recovery related~~lower operation and maintenance expenses primarily due to ~~our accelerated pipeline replacement programs.~~lower employee benefit costs.

~~Partially~~More than offsetting these favorable variances were:

lower realized and unrealized margins associated with our asset optimization program;

higher depreciation ~~expense related to~~and amortization expenses associated with the implementation of our new billing system in the second quarter of the prior year as well as growth in our utility ~~plant and~~plant.

~~higher operation and maintenance expenses.~~

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Utility Net Revenues. The following table provides the key factors contributing to the changes in the utility net revenues of the regulated utility segment between the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

							Composition of Changes in Utility Net Revenues
(In millions)	Increase/ (Decrease)			Increase/ (Decrease)
Customer growth	$	2.5		$	2.5
Estimated effects of weather and consumption patterns	3.8			0.6
Impact of rate case	5.3
Accelerated pipe replacement programs	2.0
Impact of rate cases				11.4
Asset optimization:
Realized margins	1.5			(1.6		)
Unrealized mark-to-market valuations	(4.0		)	(16.9		)
Revenue taxes				1.9
Other	(0.5		)	1.4
Total	$	10.6		$	(0.7	)

Customer growth — Average active customer meters increased ~~by approximately 13,200~~ for the three months ended December 31, ~~2016,~~2017, compared to the same period of the prior fiscal year.

Estimated effects of weather and consumption patterns — Weather, when measured by ~~HDDs,~~heating degree days (HDDs), was ~~9.3%~~1.8% colder and ~~28.2%~~9.3% warmer than normal for the three months ended December 31, ~~2016~~2017 and ~~2015,~~2016, respectively. In the District of Columbia, ~~where~~ Washington Gas does not have a weather normalization billing mechanism ~~or hedges~~nor does it hedge to offset the effects of ~~weather,~~weather. As a result, the colder weather for the three months ended December 31, ~~2016,~~2017, resulted in a positive variance to net revenues. ~~The increase to net revenues was also due to the changes in~~In addition, natural gas consumption patterns in the District of Columbia. Natural gas consumption patterns may be affected by shifts in weather patterns in which customer heating usage may not correlate highly with average historical levels of usage per heating degree day that occurs. Natural gas consumption patterns may also be affected by non-weather related factors such as customer conservation. Refer to the section entitled "Weather Risk"for a discussion of billing mechanisms in Maryland and Virginia, which are designed to eliminate the net revenue effects of variations in customer usage caused by weather and other factors such as conservation.

Impact of rate ~~case~~cases— - The increase in revenue reflects ~~interim~~new base ~~rate billings, subject to refund,~~rates in the District of Columbia, effective March 24, 2017 and in Virginia, effective ~~December~~November 28, 2016. Refer to "Rates and Regulatory Matters" for further discussion of ~~this matter.~~

~~Accelerated pipe replacement programs —~~ The positive effect on revenues is primarily due to the continued growth of our accelerated pipe replacement programs in Maryland and the District of Columbia. In Virginia, project costs that were being collected through the accelerated replacement surcharge revenues were transferred to base rates, and are reflected in the new interim base rate billings effective December 2016.these matters.

Asset optimization — We recorded an unrealized ~~gains~~loss of ~~$15.4~~$1.4 million associated with our energy-related derivatives for the three months ended December 31, ~~2016,~~2017, compared to an unrealized ~~gains~~gain of ~~$19.4~~$15.4 million reported for the same period of the prior fiscal year. When these derivatives settle, any unrealized amounts will ultimately reverse and Washington Gas will realize margins in combination with related transactions that these derivatives economically hedge. The change in the valuations ~~are~~is partially due to movements in unobservable inputs used in the valuation of long-dated forward contracts. We believe that these values are not reflective of our ultimate cash flows as these purchases are utilized in the optimization of our long-term natural gas transportation and storage capacity resources, the value of which is not reflected at fair value. Refer to the section entitled “Market Risk—Price Risk Related to the Regulated Utility Segment” for further discussion of our asset optimization program.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Operation and Maintenance Expenses. The following table provides the key factors contributing to the changes in operation and maintenance expenses of the regulated utility segment for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

							Composition of Changes in Operation and Maintenance Expenses
(In millions)	Increase/ (Decrease)			Increase/ (Decrease)
Employee incentives and direct labor costs	$	1.1
Employee incentives, direct labor costs and benefits				$	(3.0	)
System safety and integrity	2.3			1.0
Support services				(2.0		)
Uncollectible accounts				1.7
Other	(0.5		)	(0.5		)
Total	$	2.9		$	(2.8	)

Employee incentives, ~~and~~ direct labor costs and benefits — ~~Washington Gas incurred increased employee incentives~~The decrease in expense is primarily due to lower pension and ~~labor~~post-retirement benefit costs ~~net,~~resulting from an increase in the discount rate.

System safety and integrity — The increase in expense for the three months ended December 31, ~~2016,~~2017 over the same period of the previous fiscal year ~~as a result of an increase in the valuations of our share-based long-term incentive plan.~~reflects increased safety and reliability activities.

~~System safety and integrity~~Support services — ~~Washington Gas incurred higher maintenance costs~~The decrease in expense for the three months ended December 31, ~~2016, than for~~2017 over the same period inof the previous ~~year.~~fiscal year was due to lower information technology project costs.

Uncollectible Accounts — The increase in expense for the three months ended December 31, 2017 over the same period of the previous fiscal year was primarily due to higher delinquencies in customer accounts receivable balances, resulting from the suspension of dunning activities during the stabilization period of our new billing system.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Retail Energy-Marketing

The following table depicts the retail energy-marketing segment’s financial data along with selected statistical data for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

																	Retail Energy-Marketing Financial and Statistical Data
	Three Months Ended December 31,					Increase/			Three Months Ended December 31,					Increase/
(In millions)	2016		2015			(Decrease)			2017			2016		(Decrease)
Operating Results
Gross margins⁽¹⁾:
Operating revenues	$	298.7	$	289.4		$	9.3		$	248.7		$	298.7	$	(50.0	)
Less: Cost of energy	254.2		275.0			(20.8		)	228.2			254.2		(26.0		)
Revenue taxes	2.7		2.4			0.3			3.0			2.7		0.3
Total gross margins	41.8		12.0			29.8			17.5			41.8		(24.3		)
Operation expenses	11.1		11.1			—			12.0			11.1		0.9
Depreciation and amortization	0.3		0.3			—			0.3			0.3		—
General taxes and other assessments	1.2		1.2			—			1.5			1.2		0.3
Other income — net	—		0.1			(0.1		)
Other income (expenses) — net									—			—		—
EBIT	$	29.2	$	(0.5	)	$	29.7		$	3.7		$	29.2	$	(25.5	)
Analysis of gross margins (In millions)
Natural gas
Realized margins	$	7.7	$	10.4		$	(2.7	)	$	8.7		$	7.7	$	1.0
Unrealized mark-to-market gains (losses)	14.1		(4.3		)	18.4			(3.0		)	14.1		(17.1		)
Total gross margins—natural gas	$	21.8	$	6.1		$	15.7		$	5.7		$	21.8	$	(16.1	)
Electricity
Realized margins	$	14.9	$	7.4		$	7.5		$	11.6		$	14.9	$	(3.3	)
Unrealized mark-to-market gains (losses)	5.1		(1.5		)	6.6
Unrealized mark-to-market gains									0.2			5.1		(4.9		)
Total gross margins—electricity	$	20.0	$	5.9		$	14.1		$	11.8		$	20.0	$	(8.2	)
Total gross margins	$	41.8	$	12.0		$	29.8		$	17.5		$	41.8	$	(24.3	)
Other Retail Energy-Marketing Statistics
Natural gas
Therm sales (millions of therms)	220.5		189.5			31.0			198.8			220.5		(21.7		)
Number of customers (end of period)	126,400		141,300			(14,900		)	113,500			126,400		(12,900		)
Electricity
Electricity sales (millions of kWhs)	3,103.2		2,926.4			176.8			2,801.4			3,103.2		(301.8		)
Number of accounts (end of period)	122,600		135,000			(12,400		)	108,900			122,600		(13,700		)

⁽¹⁾

We utilize gross margins to assist with the analysis of profitability for the retail energy-marketing segment. Gross margins are calculated as revenues less the associated cost of energy and applicable revenue taxes. We consider gross margins to be a better reflection of performance than gross revenues or gross energy costs for our retail energy-marketing segment because gross margins are a direct measure of the success of our core strategy for the sale of natural gas and electricity. Gross margins should not be considered an alternative to, or a more meaningful indicator of our operating performance than, operating income. Additionally, gross margins may not be comparable to similarly titled measures of other companies.

The ~~increase~~decrease in EBIT ~~primarily reflects higher~~reflects: (i) lower unrealized mark-to-market ~~valuations~~valuation on energy-related derivatives due to fluctuating market prices for derivatives related to natural gas and electricity in the current ~~period.~~period; (ii) lower realized electric margins due to lower average unit margins and lower sales volume; and (iii) higher operating expenses. Period-to-period comparisons of quarterly gross margins for this segment can vary significantly and are not necessarily representative of expected annualized results.

Commercial Energy Systems

The ~~comparison~~table below represents the financial results of ~~realized gross margins from natural gas sales between~~the commercial energy systems segment for the three months ended December 31, ~~2016~~2017 and ~~2015, reflects lower natural gas margins due to a decrease in portfolio optimization activity and less favorable margin patterns when compared to the same period in the prior fiscal year.~~2016.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

The comparison of realized gross margins from electric sales between the three months ended December 31, 2016 and 2015, reflects lower capacity charges from the regional power grid operator (PJM) associated with fixed-price retail contracts.

~~Commercial Energy Systems~~

~~The table below represents the financial results of the commercial energy systems segment for the three months ended December 31, 2016 and 2015.~~

																			Commercial Energy Systems Segment Financial Information
	Three Months Ended December 31,						Increase/			Three Months Ended December 31,						Increase/
(In millions)	2016			2015			(Decrease)			2017			2016			(Decrease)
Operating revenues	$	14.9		$	15.6		$	(0.7	)	$	20.1		$	14.9		$	5.2
Operating expenses:
Cost of sales	6.0			8.5			(2.5		)	8.0			6.0			2.0
Operations	5.9			4.1			1.8			6.3			5.9			0.4
Depreciation and amortization	4.4			3.5			0.9			6.6			4.4			2.2
General taxes and other assessments	0.1			0.1			—			0.2			0.1			0.1
Operating expenses	$	16.4		$	16.2		$	0.2		$	21.1		$	16.4		$	4.7
Equity earnings	2.4			0.4			2.0			—			2.4			(2.4		)
Other income	1.3			1.1			0.2			0.9			1.3			(0.4		)
Less: Non-controlling interest	(2.5		)	—			(2.5		)	(5.7		)	(2.5		)	(3.2		)
EBIT	$	4.7		$	0.9		$	3.8		$	5.6		$	4.7		$	0.9
EBIT by division:
Energy-efficiency contracting	$	(0.5	)	$	0.8		$	(1.3	)	$	(0.6	)	$	(0.5	)	$	(0.1	)
Commercial distributed generation	1.2			(0.4		)	1.6			(0.5		)	1.2			(1.7		)
Investments in distributed generation	4.0			0.5			3.5			6.7			4.0			2.7
Total	$	4.7		$	0.9		$	3.8		$	5.6		$	4.7		$	0.9

The increase in EBIT reflects ~~(i)~~ ~~the growth in distributed generation assets in service, including higher income from solar renewable energy credit sales;~~ ~~(ii)~~ ~~higher income from state rebate programsand~~ ~~(iii)~~higher earnings from ~~alternative energy investments. These improvements were~~our investment distributed generation business, including investments in tax equity partnerships, partially offset by~~lower revenues from the energy-efficiency contracting business due to the completion of certain projects and~~ higher operating ~~and depreciation expenses.~~expenses in our commercial distributed business.

Additionally, not reflected in EBIT is the amortization of investment tax credits related to our distributed generation assets which were ~~$1.4~~$1.7 million and ~~$1.2~~$1.4 million for the three months ended December 31, 2017 and 2016, ~~and 2015,~~ respectively.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Midstream Energy Services

The table below represents the financial results of the midstream energy services segment for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

																Midstream Energy Services Segment Financial Information
	Three Months Ended December 31,					Increase/			Three Months Ended December 31,					Increase/
(In millions)	2016			2015		(Decrease)			2017		2016			(Decrease)
Operating revenues ^(a)	$	(25.0	)	$	21.2	$	(46.2	)	$	17.7	$	(25.0	)	$	42.7
Operating expenses:
Operations	1.4			1.1		0.3
General taxes and other assessments	—			0.2		(0.2		)
Operating expenses	$	1.4		$	1.3	$	0.1		1.4		1.4			—
Equity earnings	(2.1		)	0.9		(3.0		)	5.9		(2.1		)	8.0
EBIT	$	(28.5	)	$	20.8	$	(49.3	)	$	22.2	$	(28.5	)	$	50.7

^(a) The trading margins of Midstream Energy Services, including unrealized gains and losses on derivative instruments, are netted within operating revenues.

~~The decrease in EBIT~~Improved results for the quarter primarily ~~reflects:~~reflect: (i)~~lower valuations on our derivative contracts associated with our long-term transportation strategies;~~ ~~(ii)~~ ~~lower income related to our pipeline investments;~~ ~~(iii)~~ ~~lower~~higher valuations and realized margins related to storage inventory and the associated economic hedging transactions, (ii) higher realized and ~~(iv)lower realized~~unrealized margins on our transportation ~~strategies.~~strategies, and (iii) higher income related to our pipeline investments.

~~Lower~~

Although realized margins on our transportation strategies ~~are primarily a result of~~have increased quarter-over-quarter, both periods reflect losses associated with ~~the index price used in~~ certain gas purchases from Antero ~~Resources Corporation, which is~~beginning in January 2016. The index price used to invoice these purchases had been the subject of an arbitration ~~proceeding.~~proceeding: however, in February 2017, the arbitral tribunal ruled in favor of Antero. Losses realized during the ~~current period were $6.8 million for the quarter~~three months ended December 31, ~~2016.~~2017 and 2016 were $3.5 million and $6.8 million, respectively, associated with this purchase contract. Accumulated losses from the inception of the contract are ~~$22.0~~$28.4 million. In March 2017, we filed suit in state court in Colorado related to the delivery point to which the gas is being delivered by Antero. The state court granted Antero's motion to dismiss the case and the case is currently on appeal.

Separately, Antero has initiated suit against Washington Gas and WGL Midstream claiming that they have failed to purchase specified daily quantities of gas and seeking alleged cover damages exceeding $80 million as of October 24, 2017, which amount continues to accumulate daily according to Antero's complaint. Washington Gas and WGL Midstream oppose both the validity and amount of Antero's claim. WGL believes the probability that Antero could succeed in collecting these penalties is remote and therefore, no accrual was made as of December 31, 2017.

In December 2017, WGL Midstream amended its purchase contract with Antero and, effective February 1, 2018, will no longer be obligated to purchase gas at the delivery point that is the subject of these disputes. Refer to Note 13 - Commitments and Contingencies of the Notes to Consolidated Financial Statements for further discussion of this matter.

As of December 31, 2017, WGL Midstream held a $38.2 million equity method investment in Constitution Pipeline Company, LLC (Constitution). On April 22, 2016, the New York State Department of Environmental Conservation denied Constitution's application for a Section 401 Certification for the pipeline, which is necessary for the construction and operation of the pipeline. Constitution has pursued various actions to obtain approval for the pipeline, including filing a petition with the Federal Energy Regulatory Commission (FERC) that was denied in January 2018. While ~~these losses~~further actions may ~~continue~~be successful in obtaining approval for construction, based on the FERC's ruling, we expect to record an impairment charge of up to $38.2 million in the ~~near term we do anticipate that they will reverse~~second quarter. No impairment charge for this investment is included in ~~future periods upon completion of the arbitration proceeding. An initial decision on the arbitration proceedings is scheduled for on or before February 13, 2017.~~our first quarter results.

Other Non-Utility Activities

Transactions that are not significant enough on a stand-alone basis to warrant treatment as an operating segment, and that do not fit into one of our four operating segments, are aggregated as “Other Activities” and included as part of non-utility operations. Our other non-utility activities reflect EBIT of ~~$(1.2)~~$(4.2) million and ~~$(0.7)~~$(1.2) million for the three months ended December 31, ~~2016~~2017 and ~~2015,~~2016, respectively. The ~~comparison reflects~~decrease in EBIT primarily relates to higher ~~operating expenses in~~costs associated with the ~~current period when compared to the same period of the prior year.~~proposed Merger with AltaGas.

Intersegment Eliminations

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Intersegment eliminations include any mark-to-market valuations associated with trading activities between WGL Midstream and WGL Energy Services, and timing differences between Commercial Energy Systems’ recognition of revenue for the sale of REC's to Retail Energy-Marketing and Retail Energy-Marketing’s recognition of the associated expense.

For further discussion of our financial performance by operating segment, refer to Note 10 - Operating Segment Reporting of the Notes to Condensed Consolidated Financial Statements.

Consolidated Interest Expense

The following table shows the components of ~~WGL’s~~WGL's consolidated interest expense for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016. The increase in interest on long-term debt primarily reflects the issuance of additional ~~notes~~long-term debt by both WGL and Washington ~~Gas and term loans by WGL in fiscal year 2016.~~Gas.



Composition of Consolidated Interest Expense
	Three Months Ended December 31,						Increase/
(In millions)	2017			2016			(Decrease)
Interest on long-term debt	$	19.0		$	15.8		$	3.2
Interest on short-term debt	1.8			1.0			0.8
Other net, including allowance for funds used during construction	(0.6		)	(0.6		)	—
Total	$	20.2		$	16.2		$	4.0

Consolidated Income Taxes

53The following table shows WGL's income tax expense and effective income tax rate for the three months ended December 31, 2017 and 2016.



Consolidated Income Taxes
	Three Months Ended December 31,						Increase/
(In millions)	2017			2016			(Decrease)
Income before income taxes	$	101.5		$	89.2		$	12.3
Income tax (benefit) expense	(31.1		)	33.5			(64.6		)
Effective income tax rate	(30.6		)%	37.6		%	(68.2		)%
Income tax (benefit) expense	(31.1		)	33.5			(64.6		)
Less Discrete re-measurement impact of Tax Act	(52.9		)	—			(52.9		)
Income tax expense excluding discrete re-measurement impact	21.8			33.5			(11.7		)
Effective income tax rate excluding discrete re-measurement impact	21.5		%	37.6		%	(16.1		)%

The decrease in the effective income tax rate is due to the enactment of the Tax Act.

The Tax Act was enacted on December 22, 2017. The Tax Act substantially reforms the Tax Code and impacts individuals, corporations and pass-through entities. Some provisions of the Tax Act are temporary while others are permanent. In addition, there are transition rules, phase-out provisions, and phase-in provisions. Certain key domestic provisions of the Tax Act are described below, with some provisions subject to further guidance and interpretation by Treasury. The impact of the Tax Act on the Company cannot be fully assessed until such guidance is issued and applied to the relevant facts.

Reduction in federal income tax rate to a flat rate of 21% effective January 1, 2018.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

100% bonus depreciation for eligible assets (excluding public utility property) placed in service after September 27, 2017 and before January 1, 2023, with the percentage of bonus depreciation phasing out by 20 percent each year thereafter through December 31, 2026.

Composition of Consolidated Interest Expense

Three Months Ended
December 31, Increase/
(In millions) 2016 2015 (Decrease)
Interest on long-term debt $ 15.8
$ 12.8
$ 3.0
Other Interest 0.5
—
0.5
Allowance for funds used during construction and other- net (0.1 ) —
(0.1 )
Total $ 16.2
$ 12.8
$ 3.4
For the regulated utility, the re-measurement of certain deferred tax assets and liabilities at 21% results in a net amount of excess deferred taxes to be refunded to ratepayers. The Tax Act prescribes the Average Rate Assumption Method as the methodology for the refund of certain excess deferred amounts for regulated public utilities with vintage asset records.

For tax years beginning after December 31, 2017, interest deductions of unregulated trades or businesses are subject to a limitation of 30% of adjusted taxable income Interest deductions claimed by regulated public utilities are not limited under this provision. The rules for allocating interest between regulated and unregulated operations have not yet been issued.

~~Consolidated~~Refer to Note 7 - Income Taxes

~~The following table shows WGL’s consolidated income tax expense and effective income tax rate~~ of the Notes to Condensed Consolidated Financial Statements for ~~the three months ended December 31, 2016 and 2015.~~

Consolidated Income Taxes

Three Months Ended December 31, Increase/
(In millions) 2016 2015 (Decrease)
Income before income taxes 89.2
$ 107.0
$ (17.8 )
Income tax expense 33.5
38.5
(5.0 )
Effective income tax rate 37.6 % 36.0 % 1.6 %

~~The increase in the effective tax rate is due to the loss allocated to non-controlling interests.~~a detailed discussion.

LIQUIDITY AND CAPITAL RESOURCES

General Factors Affecting Liquidity

Access to short-term debt markets is necessary for funding our short-term liquidity requirements, the most significant of which include buying natural gas, electricity and pipeline capacity, and financing accounts receivable and storage gas inventory. We have accessed long-term capital markets primarily to fund both capital expenditures and investment activities and to retire long-term debt.

During the three months ended December 31, ~~2016,~~2017, WGL met its liquidity and capital needs through cash on hand, retained earnings, reduced cash outflows resulting from deferred income taxes and the issuance of commercial ~~paper.~~paper and long-term debt. Washington Gas met its liquidity and capital needs through cash on hand, including the proceeds of long-term debt issued in the fourth fiscal quarter of ~~2016,~~2017, retained earnings, and equity infusion from WGL, reduced cash outflows resulting from deferred income taxes and the issuance of commercial paper.

Our ability to access capital markets depends on our credit ratings, general market liquidity, and investor demand for our securities. The ~~pending~~ Merger Agreement has placed certain restrictions on WGL’s ability to access the capital markets. Please see Note 17 — Planned Merger with AltaGas Ltd. of theNotes to Condensed Consolidated Financial Statementsfor a discussion of the proposed Merger. Our credit ratings depend largely on the financial performance of our subsidiaries, and a ratings downgrade could both increase our borrowing costs and trigger the need for us to post additional collateral with our wholesale counterparties or other creditors. In support of our credit ratings, we have a goal to maintain our long-term average common equity ratio in the 50% range of total consolidated capital over the long term. As of December 31, ~~2016,~~2017, total consolidated capitalization, including current maturities of long-term debt and notes payable and project financing, comprised ~~40.6%~~38.5% common equity, ~~0.2%~~0.1% non-controlling interest, ~~0.8%~~0.7% preferred stock and ~~58.4%~~60.7% long- and short-term debt. This ratio varies during the fiscal year primarily due to the seasonal nature of Washington Gas' business. This seasonality also affects our short-term debt balances, which are typically higher in the fall and winter months and substantially lower in the spring when a significant portion of Washington Gas' current assets are converted into cash at the end of the heating season. Our cash flow requirements and our ability to provide satisfactory resources to meet those requirements are primarily influenced by the activities of all of WGL’s operating segments.

Our plans provide for sufficient liquidity to satisfy our financial obligations. At December 31, ~~2016,~~2017, we had no significant restrictions on our cash balances or retained earnings that would affect the payment of common or preferred stock dividends by either WGL or Washington Gas. ~~Refer to Note 16 —~~ ~~Subsequent Events for a discussion of our planned merger with AltaGas.~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

Short-Term Cash Requirements and Related Financing

Washington Gas has seasonal short-term cash requirements to fund the purchase of storage gas inventory in advance of the winter heating season. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Washington Gas had balances in gas storage of ~~$88.5~~$85.0 million and ~~$82.5~~$92.8 million, respectively. Washington Gas collects the cost of gas under cost recovery mechanisms approved by its regulators. Additionally, Washington Gas may be required to post cash collateral for certain purchases.

During the first six months of each fiscal year, Washington Gas’ large sales volumes cause its cash requirements to peak when combined storage inventory, accounts receivable and unbilled revenues are at their highest levels. During the last six months of each fiscal year, after the heating season, Washington Gas typically experiences a seasonal net loss due to reduced demand for natural gas. During this period, large amounts of Washington Gas’ current assets are converted to cash, which

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Washington Gas generally uses to reduce and usually eliminate short-term debt and acquire storage gas for the next heating season.

Variations in the timing of collections under Washington Gas’ gas cost recovery mechanisms can significantly affect its short-term cash requirements. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Washington Gas had ~~$2.1~~$1.3 million and ~~$3.3~~$2.0 million in net over-collections, respectively, of gas costs reflected in current liabilities as gas costs due to customers. Amounts under-collected or over-collected that are generated during the current gas cost recovery cycle are deferred as a regulatory asset or liability on the balance sheet until September 1 of each year, at which time the accumulated amount is transferred to gas costs due from/to customers as appropriate. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, Washington Gas had a net regulatory ~~assets~~asset of ~~$50.3~~$31.6 million and ~~$5.7~~$5.6 million, respectively, related to the current gas recovery cycle.

WGL Energy Services and WGL Midstream have seasonal short-term cash requirements to fund the purchase of storage gas inventory in advance of the winter heating season. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL Energy Services had balances in gas storage of ~~$22.1~~$20.5 million and ~~$31.5~~$33.1 million, respectively. WGL Energy Services collects revenues that are designed to reimburse commodity costs used to supply ~~their~~its retail customer contracts and wholesale counterparty contracts. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL Midstream had balances in gas storage of ~~$98.2~~$101.5 million and ~~$93.1~~$118.2 million, respectively. As market opportunities arise, WGL Midstream ~~collects revenues in excess of its commodity costs through its~~may physically sell the inventory on the wholesale ~~counterparty~~natural gas market, or economically hedge the inventory with financial derivative contracts. WGL Energy Services and WGL Midstream derive funding to finance these activities from short-term debt issued by WGL, which is made available through the money pool as discussed below. Additionally, WGL Energy Services and WGL Midstream may be required to post cash collateral for certain transactions. WGL Energy Services and WGL Midstream may be required to provide parent guarantees from WGL for certain transactions.

In addition to storage gas, WGL Midstream also has cash requirements to fund the capital requirements of its various infrastructure investments. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL Midstream had investments of ~~$305.5~~$489.4 million and ~~$237.4~~$384.6 million related to these investments, respectively. WGL Midstream initially funds capital calls related to these investments from short-term debt issued by WGL.

WGL Energy Systems has cash requirements to fund the construction and purchase of residential and commercial distributed generation systems. WGL Energy Systems initially finances these activities through short-term debt issued by WGL.

WGL and Washington Gas use short-term debt in the form of commercial paper or unsecured short-term bank loans to fund seasonal cash requirements. Our policy is to maintain back-up bank credit facilities in an amount equal to or greater than our expected maximum commercial paper position.

WGL and Washington Gas each have credit facilities. The credit facility for WGL permits it to borrow up to ~~$450.0 million, and further permits, with the banks’ approval, additional borrowings of $100.0 million for a maximum potential total of $550.0~~$650.0 million. The credit facility for Washington Gas permits it to borrow up to $350.0 million, and further permits, with the banks’ approval, additional borrowings of $100.0 million for a maximum potential total of $450.0 million. The interest rate on loans made under each of the credit facilities is a fluctuating rate per annum that is set using certain parameters at the time each loan is made. WGL and Washington Gas incur credit facility fees, which in some cases are based on the long-term debt ratings of WGL and Washington Gas. In the event that the long-term debt ratings are downgraded below certain levels, WGL and Washington Gas would be required to pay higher fees. There are five different levels of fees. ~~The~~For WGL, under the terms of the credit facilities, the lowest level facility ~~for WGL defines its applicable~~ fee ~~level as one level higher than~~is 0.075% and the ~~fee level applicable to~~highest is 0.225%. For Washington ~~Gas. Under~~Gas, under the terms of the credit facilities, the lowest level facility fee is 0.06% and the highest is 0.175%. The facilities have a maturity date of December 19, 2019, and the credit agreements each provide WGL or Washington Gas with the right, as applicable, to request two additional one-year extensions, with the ~~banks’~~lenders’ approval. Bank credit balances available to WGL and Washington Gas, net of commercial paper balances, were ~~$76.0~~$308.1 million and ~~$131.0~~$188.0 million, respectively, at December 31, ~~2016~~2017 and ~~$223.0~~$268.0 million and ~~$308.0~~$227.0 million, respectively, at September 30, ~~2016, respectively.~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

In January 2017, WGL entered into a credit agreement providing for a $50.0 million term loan. The credit agreement provides for a maturity date of two years, with a one-year extension option with the lender's approval. WGL will use the loan proceeds to pay down commercial paper. Similar to the existing revolving credit facility, the credit agreement has a financial covenant where the ratio of its consolidated financial indebtedness to its consolidated total capitalization cannot exceed 65% at any time.2017.

To manage credit risk, Washington Gas may require certain customers and suppliers to provide deposits, including collateral from wholesale counterparties, which are reported as current liabilities in “Customer deposits and advance payments,” in the accompanying balance sheets. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, “Customer deposits and advance payments” totaled ~~$72.5~~$54.7 million and ~~$80.9~~$64.2 million, respectively. For Washington Gas, deposits from customers may be refunded at various times throughout the year based on ~~the customer’s~~customer payment habits. At the same time, other customers make new deposits that cause the balance of customer deposits to remain relatively steady. There are no restrictions on Washington Gas’ use of these customer deposits. Washington Gas pays interest to its customers on these deposits in accordance with the requirements of its regulatory commissions.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

For WGL Energy Services and WGL Midstream, deposits typically represent collateral for transactions with wholesale counterparties. These deposits may be reduced, repaid or increased at any time based on the current value of WGL Energy Services’ or WGL Midstream’s net position with the counterparty. At December 31, 2017 and September 30, 2017, “Customer deposits and advance payments” totaled $0.5 million and $1.6 million, respectively, for WGL Midstream. There were no such deposits for WGL Energy Services at December 31, 2017 and September 30, 2017. Currently, there are no restrictions on the use of deposited funds and interest is paid to the counterparty on these deposits in accordance with ~~its~~our contractual obligations. Refer to the section entitled "Credit Risk" for further discussion of our management of credit risk.

Project Financing

Washington Gas ~~has~~previously obtained third-party project financing on behalf of the ~~Federal~~federal government to provide funds during the construction of certain energy management services projects entered into under Washington Gas' area-wide contract. In connection with work completed under the area-wide contract, the construction work is performed by WGL Energy Systems on behalf of Washington Gas and an inter-company payable is recorded for work provided by WGL Energy Systems. As work is performed, Washington Gas establishes a receivable representing the government's obligation to remit principal and interest. The payable and receivable are equal to each other at the end of the construction period, but there may be timing differences in the recognition of the project related payable and receivable during the construction period. When these projects are formally “accepted” by the government and deemed complete, Washington Gas assigns the ownership of the receivable to the ~~third party~~third-party lender in satisfaction of the obligation and removes both the receivable and the obligation related to the financing from its financial statements. In March 2016 the SCC of VA denied Washington Gas' participation in the third party financing arrangement. At December 31, 2017 there were two contracts remaining totaling $43.8 million on the Washington Gas balance sheet as a short-term obligation to third party lenders in "Notes payable and project financing".

As of December 31, ~~2016,~~2017, WGL and Washington Gas recorded ~~$51.7~~$94.6 million and $85.4 million, respectively, in "Unbilled revenues" on the balance sheet, and ~~WGL and Washington Gas recorded $41.4~~$54.8 million and ~~$37.7~~$43.8 million, respectively, in a corresponding short-term obligation to ~~third party~~third-party lenders in "Notes payable and project financing", for energy management services projects that were not complete. As of September 30, ~~2016,~~2017, WGL and Washington Gas recorded ~~a $73.3~~$85.6 million and $78.2 million in "Unbilled revenues" on the balance sheet and $54.8 million and $43.8 million, respectively, in a ~~$62.4 million~~ corresponding short-term obligation to ~~third party~~third-party lenders in "Notes payable and project financing" for energy management services projects that were not complete. ~~WGL Energy Services did not obtain any third-party project financing on behalf of the Federal government for the fiscal year ended September 30, 2016.~~ Because these projects are financed for government agencies ~~which~~that have minimal credit risk, and with which we have previous collection experience, neither WGL nor Washington Gas recorded a corresponding reserve for bad debts related to these receivables at December 31, ~~2016~~2017 or September 30, ~~2016.~~2017.

Long-Term Cash Requirements and Related Financing

The primary drivers of our long-term cash requirements include capital expenditures, non-utility investments and long-term debt maturities. For the regulated utility segment, our capital expenditures primarily relate to adding new utility customers and system supply as well as maintaining the safety and reliability of Washington Gas’ distribution system. For our non-utility segments, our long-term cash requirements primarily depend on the level of investments and capital expenditures. For WGL Midstream, our investments primarily relate to providing capital for construction of the ~~pipeline~~infrastructure investments. For WGL Energy Systems and WGSW, our investments primarily relate to providing capital for construction of distributed generation and commercial solar projects.

In connection with entering into the Merger Agreement, while the Merger is pending, WGL Holdings, Inc. will not raise capital using common equity issuances or using debt longer than two years in duration.

56Previously, WGL and Washington Gas generated significant deferred taxes based on previous tax rates and policies, which reduced the Company’s need for long term financing. WGL is still evaluating the impact on future financing as a result of the Tax Act.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

~~Systems and WGSW, our investments primarily relate to providing capital for construction of distributed generation and commercial solar projects.~~

~~In connection with entering into the Merger Agreement, WGL Holdings, Inc. will not raise capital using common equity issuances or using debt longer than two years in duration.~~

Refer to the section entitled “Capital Investments” ~~in our 2016 Annual Report~~ for a discussion of our capital expenditures ~~forecast and for a discussion of our long-term debt maturities.~~forecast.

Security Ratings

The table below reflects the current credit ratings for the outstanding debt instruments of WGL and Washington Gas. Changes in credit ratings may affect WGL’s and Washington Gas’ cost of short-term and long-term debt and our access to the capital markets. A security rating is not a recommendation to buy, sell or hold securities. Credit ratings are subject to revision or withdrawal at any time by the assigning rating organization and each rating should be evaluated independently of any other rating.



	WGL		Washington Gas
Rating Service	Senior Unsecured	Commercial Paper	Senior Unsecured	Commercial Paper
Fitch Ratings^(a)	AA-	F1F2	~~AA-~~A+	F1
Moody’s Investors Service^(b)	A3	P-2	A1	P-1
Standard & Poor’s Ratings Services^(c)	AA-	A-1	A+A	A-1

(a) The long-term debt ratings outlook issued by Fitch Ratings for WGL and Washington Gas was adjusted to negative on October 13, 2016.

(b) The long-term debt ratings outlook issued by Moody’s Investors Service for WGL and Washington Gas was adjusted to negative on February 1, 2017.

(c) The long-term debt ratings outlook issued by Standard & Poor’s Rating Services for WGL and Washington Gas was adjusted to negative on January 26, 2017.

Ratings Triggers and Certain Debt Covenants

WGL and Washington Gas pay credit facility fees, which in some cases are based on the long-term debt ratings of Washington Gas. Under the terms of WGL’s and Washington Gas' revolving credit agreements, term loan facility and private placement notes, the ratio of consolidated financial indebtedness to consolidated total capitalization cannot exceed 0.65 to 1.0 (65.0%). As of December 31, ~~2016,~~2017, WGL's and Washington Gas' ratios of consolidated financial indebtedness to consolidated total capitalization were ~~58%~~61% and 50%, respectively. In addition, WGL and Washington Gas are required to inform lenders of changes in corporate existence, financial conditions, litigation and environmental warranties that might have a material effect on debt ratings. The failure to inform the lenders’ agent of material changes in these areas might constitute default under the agreements. Additionally, failure to pay principal or interest on any other indebtedness may be deemed a default under our credit agreements. A default, if not remedied, may lead to a suspension of further loans and/or acceleration in which obligations become immediately due and payable. At December 31, ~~2016,~~2017, we were in compliance with all of the covenants under our revolving credit facilities.

For certain of Washington Gas’ natural gas purchase and pipeline capacity agreements, if the long-term debt of Washington Gas is downgraded below the lower of a BBB- rating by Standard & Poor’s or a Baa3 rating by Moody’s Investors Service, or if Washington Gas is deemed by a counterparty not to be creditworthy, then the counterparty may withhold service or deliveries, or may require additional credit support. For certain other agreements, if the counterparty’s credit exposure to Washington Gas exceeds a contractually defined threshold amount, or if Washington Gas’ credit rating declines by a certain rating level, then the counterparty may require additional credit support. At December 31, ~~2016,~~2017, Washington Gas would not be required to provide additional credit support for these arrangements if its long-term credit rating was to be downgraded by one rating level.

WGL guarantees payments for certain purchases of natural gas and electricity on behalf of WGL Energy Services and WGL Midstream (refer to “Contractual Obligations, Off-Balance Sheet Arrangements and Other Commercial Commitments” for further discussion of these guarantees). If the credit rating of WGL declines, WGL Energy Services and WGL Midstream may be required to provide additional credit support and credit enhancements for these purchase contracts. At December 31, ~~2016,~~2017, WGL Energy Services would not be required to provide additional credit support for these ~~arrangements.~~arrangements if WGL's credit ratings were to decline by one rating level. At December 31, ~~2016,~~2017, WGL Midstream would be required to provide ~~$50,000~~$1.7 million of additional credit support for these ~~arrangements.~~arrangements if WGL's credit ratings were to decline by one rating level.

Historical Cash Flows

The following table summarizes WGL’s net cash provided by (used in) operating, investing and financing activities for the three months ended December 31, 2017 and 2016:

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

~~The following table summarizes WGL’s net cash provided by (used in) operating, investing and financing activities for the three months ended December 31, 2016 and 2015:~~


	Three Months Ended December 31,									Three Months Ended December 31,
(In millions)	2016			2015			Increase/ (Decrease)			2017			2016			Variance
Cash provided by (used in):
Operating activities	$	(94.1	)	$	(58.1	)	$	(36.0	)	$	(6.7	)	$	(90.5	)	$	83.8
Financing activities	$	318.5		$	174.5		$	144.0		$	265.8		$	314.9		$	(49.1	)
Investing activities	$	(217.1	)	$	(107.3	)	$	(109.8	)	$	(203.5	)	$	(217.1	)	$	13.6

Cash Flows ~~Used In~~Provided by Operating Activities

The regulated utility’s cash flows from operating activities principally reflect gas sales and deliveries and the cost of operations. The volume of gas sales and deliveries is dependent primarily on factors external to the utility, such as growth of customer demand, weather, market prices for energy, economic conditions and measures that promote energy efficiency. Under revenue and weather normalization, ratemaking adjustments and decoupling mechanisms in place, changes in delivery volumes from levels assumed when rates were approved may affect the timing of cash flows but not net income. The price at which the utility provides energy to customers is determined in accordance with regulatory-approved tariffs. In general, changes in the utility’s cost of gas may affect the timing of cash flows but not net income because the costs are recovered in accordance with ~~rate agreements.~~tariff provisions. In addition, the regulated utility’s cash flow is impacted by the timing of derivative settlements.

The non-utility cash flows from operating activities primarily reflect: (i) the timing of receipts related to distributed generation and federal projects in the commercial energy systems segment; (ii) the timing of receipts related to electric and gas bills and the timing of payments for the cost of the commodity for WGL Energy Services and (iii) the timing of gas purchases and sales resulting from trading activities at WGL Midstream. Both WGL Energy Services' and WGL Midstream's cash flows are impacted by the timing of derivative settlements.

Net income is the result of cash and non-cash (or accrual) transactions. Only cash transactions affect WGL’s cash flows from operating activities. Principal non-cash charges include depreciation, accrued or deferred pension and other post-retirement benefit costs and deferred income tax expense. Non-cash charges or credits may also be accrued under the revenue decoupling and cost reconciliation mechanisms in the utilities' rate plans.

Net cash flows used in operating activities for the three months ended December 31, ~~2016~~2017 was ~~$94.1~~$6.7 million compared to net cash flows used in operating activities of ~~$58.1~~$90.5 million for the three months ended December 31, ~~2015.~~2016. The decrease in cash flows used in operating activities primarily reflects settlements of derivative instruments for WGL Midstream, increases in customer rates, and higher cash collections due to weather normalization.

Cash Flows Provided by Financing Activities

Cash flows provided by financing activities totaled ~~$318.5~~$265.8 million for the three months ended December 31, ~~2016,~~2017, compared to cash flows provided by financing activities of ~~$174.5~~$314.9 million for the same period of the prior year. This ~~increase~~decrease in cash flows primarily reflects a ~~net increase~~reduction in the issuance of ~~$128.1 million in short-term financing during the current period~~new debt and ~~$7.3 million in contributions from non-controlling interests.~~additional tax withholdings on stock based compensation.

Cash Flows Used in Investing Activities

During the three months ended December 31, ~~2016,~~2017, cash flows used in investing activities totaled ~~$217.1~~$203.5 million compared to ~~$107.3~~$217.1 million used in the three months ended December 31, ~~2015.~~2016. This ~~increase~~decrease in cash used is primarily due to ~~our additional funding~~the decrease in expenditures for Washington Gas' accelerated pipe replacement programs, ~~an increase in capital expenditures related to non-utility commercial distributed generation assets and an increase in~~partially offset by increased investments in non-utility ~~interests, including a $45.5 million contribution related to the retirement of debt at the entity level of the Stonewall Gas Gathering System (Stonewall System) during the current period.~~

~~Capital Investments~~

The following table depicts our projected capital investments for fiscal years 2017 through 2021. Our capital outlays include expenditures to extend service to new areas to improve service for our utility customers and to grow our non-utility investments.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

Projected
(In millions) 2017 2018 2019 2020 2021 Total
New business^(a)
$ 130.9
$ 148.9
$ 153.8
$ 166.6
$ 189.5
$ 789.7
Replacements:
Regulatory plans^(b)
130.7
139.0
149.8
167.1
173.1
759.7
Other^(c)
58.3
53.7
54.1
55.7
57.3
279.1
Customer information system 23.0
—
—
—
—
23.0
Other utility 49.6
74.1
53.4
57.5
71.3
305.9
Total utility^(d)
392.5
415.7
411.1
446.9
491.2
2,157.4
Pipeline investments 120.1
553.4
57.7
1.2
—
732.4
Distributed generation 100.1
100.1
100.1
100.1
100.1
500.5
Other non-utility 1.5
0.2
0.1
0.1
0.1
2.0
Total investments $ 614.2
$ 1,069.4
$ 569.0
$ 548.3
$ 591.4
$ 3,392.3

~~(a) Includes certain projects that support the existing distribution system.~~

~~(b) Represents capital expenditures (excluding cost of removal), both approved, and expected to be approved, under our Accelerated Pipeline~~

~~Replacement Programs in all jurisdictions.~~

~~(c) Includes all other replacement activity that is not under our Accelerated Pipeline Replacement Programs.~~

~~(d) Excludes Allowance for Funds Used During Construction and cost of removal. Includes capital expenditures accrued and capital expenditure adjustments recorded in the fiscal year.~~interests.

Pipeline Investments

Constitution Pipeline

~~In 2013,~~ WGL Midstream invested in Constitution. At December 31, 2016, WGL Midstream's total estimated share of the cash contributions for Constitution is estimated to be $95.5 million over the term of the agreement, reflectingowns a 10% ~~share~~interest in ~~the pipeline venture.~~Constitution Pipeline Company, LLC (Constitution). The pipeline project is designed to transport at least 650,000 dekatherms of natural gas per day from the Marcellus region in northern Pennsylvania to major northeastern markets. Fully contracted with long-term commitments from established natural gas producers currently operating in Pennsylvania, the pipeline is designed to originate from the Marcellus production areas in Susquehanna County, Pennsylvania, and interconnect with the Iroquois Gas Transmission and Tennessee Gas Pipeline systems in Schoharie County, New York.

On December 2, 2014, the Federal Energy Regulatory Commission (FERC) issued an order granting a certificate of public convenience and necessity.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

On April 22, 2016, the New York State Department of Environmental Conservation (NYSDEC) denied Constitution’s application for a Section 401 Certification for the pipeline, which is necessary for the construction and operation of the pipeline. ~~Constitution has stated that it remains committed to pursuing the project and that it intends to pursue all available options to challenge the legality and appropriateness of NYSDEC’s decision.~~ In May 2016, Constitution filed actions in both the U.S. Circuit Court of Appeals for the Second Circuit and the U.S. District Court for the Northern District of New York, appealing the decision and seeking declaratory judgment that the State of New York’s permitting authority is preempted by federal law. In May 2016, Constitution appealed the NYSDEC’s denial of the Section 401 certification to the United States Court of Appeals for the Second Circuit, and in August 2017 the court issued a decision denying in part and dismissing in part Constitution’s appeal. The ~~courts have granted Constitution's motions~~court expressly declined to ~~expedite~~rule on Constitution’s argument that the ~~schedules~~NYSDEC’s decision on Constitution’s Section 401 application constitutes a waiver of the certification requirement. Constitution has filed a petition for ~~these legal actions.~~rehearing with the Second Circuit Court's decision, but in October the court denied our petition. In January 2018, Constitution petitioned the United States Supreme Court to review the Second Circuit Court’s decision.

In October 2017 Constitution filed a petition for declaratory order requesting the FERC to find that, by operation of law, the Section 401 certification requirement for the New York State portion of Constitution’s pipeline project was waived due to the failure by the NYSDEC to act on Constitution’s Section 401 application within a reasonable period of time as required by the express terms of such statute. The petition was consistent with a recent decision by the District of Columbia Circuit Court in another proceeding, in which the court clarified that an applicant facing similar circumstances should present evidence of waiver to the FERC. On January 11, 2018, the FERC denied the petition, finding that Section 401 provides that a state waives certification only when it does not act on an application within one year from the date of the application. The project’s sponsors remain committed to the project and plan to seek rehearing and, if necessary, appeal of the FERC’s decision. WGL Midstream held a ~~$38.3~~$38.2 million equity method investment in Constitution at December 31, ~~2016.~~ 2017. At December 31, 2017, we did not record any impairment charge to reduce the carrying value of our investment. In light of FERC’s ruling on January 11, 2018, however, we expect that we will record an impairment charge of up to $38.2 million, the current carrying amount of the investment, in the quarter ending March 31, 2018. There could also be additional expenditures beyond this impairment; however, we believe that recoveries from the sale of the inventories held by Constitution will mostly offset these expenditures.

Refer to Note 11, OtherInvestmentsof the Notes to ~~the~~Condensed Consolidated Financial Statements for further discussion of this matter.

~~Constitution has a target in-service date in the second half of 2018 which is reflected in our capital expenditure projections for fiscal year 2017 and beyond.~~

Meade

In February 2014, WGL Midstream and certain venture partners formed, and WGL Midstream acquired a 55% interest in Meade Pipeline Co LLC (Meade). Meade was formed to develop and own, jointly with Transcontinental Gas Pipe Line Company, LLC (Transco), an approximately 185-mile pipeline originating in Susquehanna County, Pennsylvania and extending to Lancaster County, Pennsylvania (Central Penn) that will have the capacity to transport and deliver up to approximately 1.7 million dekatherms per day of natural gas. Additionally, WGL Midstream entered into an agreement with Cabot Oil & Gas Corporation (Cabot) whereby WGL Midstream will purchase 500,000 dekatherms per day of natural gas from Cabot over a 15 year term. As part of this agreement, Cabot has acquired 500,000 dekatherms per day of firm gas transportation capacity on Transco’s Atlantic Sunrise project. This capacity will be released to WGL Midstream.

Central Penn will be an integral part of Transco’s “Atlantic Sunrise” ~~project.~~project and will be fully integrated into Transco's system. WGL Midstream will invest an estimated $410 million for its interest in Meade, and Meade will invest an estimated $746 million in Central Penn for an approximate 39%

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

interest in Central Penn. Transco will hold the remaining ownership interests in Central Penn. Central Penn currently has a projected in-service date of mid-2018. On February 3, 2017, the FERC issued an order granting Transco's certificate of public convenience and necessity, subject to certain conditions. On February 6, ~~2016~~2017, Transco accepted the certificate of public convenience and necessity.

Additionally, in February 2014, WGL Midstream entered into an agreement with Cabot Oil & Gas Corporation (Cabot) whereby WGL Midstream will purchase 500,000 dekatherms per day of natural gas from Cabot over a On September 15, ~~year term. As part of this agreement, Cabot will acquire 500,000 dekatherms per day of firm gas transportation capacity~~2017, FERC issued the Notice to Proceed and thereafter, construction on ~~Transco’s Atlantic Sunrise project of which~~ Central Penn ~~is a part. This capacity will be released to WGL Midstream.~~has begun.

Mountain Valley Pipeline

~~In March 2015,~~ WGL Midstream owns a acquired a 7%10% equity interest in Mountain Valley Pipeline, LLC (Mountain Valley). On October 24, 2016, WGL Midstream acquired an additional 3% equity interest in Mountain Valley by assuming all of Vega Midstream MVP LLC's (Vega Energy) interest in the joint venture. WGL Midstream now owns a 10% interest in Mountain Valley.

The proposed pipeline to be developed, constructed, owned and operated by Mountain Valley, will transport approximately 2.0 million dekatherms of natural gas per day ~~from interconnects~~and connects with EQT Corporation's Equitrans system ~~near the MarkWest Mobley plant~~ in Wetzel County, West Virginia to ~~Transcontinental Gas Pipe Line Company LLC's~~Transco's Station 165 in Pittsylvania County, Virginia. The pipeline is scheduled to be in service by December 2018.

WGL Midstream expects to invest in scheduled capital contributions through the in-service date of the pipeline, its pro rata share (based on its 10% equity interest) of project costs, an estimated aggregate amount of approximately ~~$327.6~~$350.0 million. In

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Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

addition, WGL Midstream entered into a gas purchase commitment to buy 500,000 dekatherms of natural gas per day, at index-based prices, for a 20 year term, and will also be a shipper on the proposed pipeline.

Stonewall System

WGL Midstream ~~has~~owns a 30% equity interest in an entity that owns and operates certain assets known as the Stonewall System. ~~WGL Midstream paid $89.4 million to acquire the equity interest.~~ The Stonewall System has the capacity to gather up to 1.4 billion cubic feet of natural gas per day from the Marcellus production region in West Virginia, and connects with an interstate pipeline system that serves markets in the mid-Atlantic region. ~~During~~WGL Midstream held a $135.7 million and $136.7 million equity method investment in the ~~quarter ended~~Stonewall System at December 31, ~~2016,~~ 2017 and September 30, 2017, respectively.

WGL ~~Midstream contributed an additional $45.5 million related to retiring debt at the entity level.~~Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

CONTRACTUAL OBLIGATIONS, OFF-BALANCE SHEET ARRANGEMENTS, AND OTHER COMMERCIAL COMMITMENTS

Contractual Obligations

WGL and Washington Gas have certain contractual obligations incurred in the normal course of business that require fixed and determinable payments in the future. These commitments include long-term debt, lease obligations, unconditional purchase obligations for pipeline capacity, transportation and storage services, certain natural gas and electricity commodity commitments and our commitments related to the business process outsourcing program.

Reference is made to the "Contractual Obligations, Off-Balance Sheet Arrangements and Other Commercial Commitments" section of Management's Discussion in our ~~2016 Annual Report.~~2017 Form 10-K. Note 5 to the Condensed Consolidated Financial Statements in our ~~2016 Annual Report~~2017 Form 10-K includes a discussion of long-term debt, including debt maturities. Note 13 to the Condensed Consolidated Financial Statements in our ~~2016 Annual Report~~2017 Form 10-K reflects information about the various contracts of Washington Gas, WGL Energy Services and WGL Midstream.

There were no significant changes to contractual obligations during the three months ended December 31, ~~2016.~~2017. Refer to Note 1617 — ~~Subsequent Events~~Planned Merger with AltaGas Ltd. of the Notes to Condensed Consolidated Financial Statements for information regarding the ~~proposed~~ Merger Agreement.

Financial Guarantees

WGL has guaranteed payments primarily for certain commitments on behalf of ~~certain~~some of its subsidiaries. At December 31, 2016, these guarantees totaled $30.7 million, $269.9 million, $74.9 million and $356.8 million for Washington Gas, WGL Energy Services, WGL Energy Systems and WGL Midstream, respectively. At December 31, 2016,WGL also had guarantees on behalf of other subsidiaries totaling $2.1 million. The amount of such guarantees is periodically adjusted to reflect changes in the level of WGL's financial exposure related to these commitments. For all of our financial guarantees, WGL may cancel any or all future obligations upon written notice to the counterparty, but WGL would continue to be responsible for the obligations created under the guarantees prior to the effective date of the cancellation. WGL has also guaranteed payments for certain of our external partners. At December 31, ~~2016,~~2017, the maximum potential amount of future payments under the guarantees for external parties totaled ~~$15.7 million and the fair value of these guarantees was insignificant.~~$0.6 million.

CREDIT RISK

Wholesale Credit Risk

Certain wholesale suppliers that sell natural gas to any or all of Washington Gas, WGL Energy Services, and WGL Midstream and electricity to WGL Energy Services, may have relatively low credit ratings or may not be rated by major credit rating agencies.

Washington Gas enters into transactions with wholesale counterparties for the purpose of meeting firm ratepayer commitments, to optimize the value of its long-term capacity assets, and for hedging natural gas costs. In the event of a counterparty’s failure to deliver contracted volumes of gas or fulfill its payment obligations, Washington Gas may incur losses that would typically be passed through to its sales customers under the purchased gas cost adjustment mechanisms; however, Washington Gas may be at risk for financial loss to the extent these losses are not passed through to its customers.

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~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

For WGL Energy Services, any failure of wholesale counterparties to deliver natural gas or electricity under existing contracts could cause financial exposure for the difference between the price at which WGL Energy Services has contracted to buy these commodities and their replacement cost from another supplier. To the extent that WGL Energy Services sells natural gas to these wholesale counterparties, WGL Energy Services may be exposed to payment risk if WGL Energy Services is in a net receivable position. Additionally, WGL Energy Services enters into contracts with counterparties to hedge the costs of natural gas and electricity. Depending on the ability of the counterparties to fulfill their commitments, WGL Energy Services could be at risk for financial loss.

WGL Midstream enters into transactions with wholesale counterparties to hedge and optimize its portfolio of owned and managed natural gas assets. Any failure of wholesale counterparties to deliver natural gas under existing contracts could cause financial exposure for the difference between the price at which WGL Midstream has contracted to buy these commodities and their replacement cost. To the extent that WGL Midstream sells natural gas to these wholesale counterparties, WGL Midstream may be exposed to payment risk if it is in a net receivable position. In addition, WGL Midstream enters into contracts with counterparties to hedge the costs of natural gas. Depending on the ability of the counterparties to fulfill their commitments, WGL Midstream could be at risk for financial loss.

Washington Gas, WGL Energy Services, and WGL Midstream operate under an existing wholesale counterparty credit policy that is designed to mitigate credit risks through requirements for credit enhancements including, but not limited to, letters

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Washington Gas Light Company

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Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

of credit, parent guarantees and cash collateral when deemed necessary. In accordance with this policy, Washington Gas, WGL Energy Services, and WGL Midstream have each obtained credit enhancements from certain of their counterparties. If certain counterparties or their guarantors meet the policy’s creditworthiness criteria, Washington Gas, WGL Energy Services, and WGL Midstream may grant unsecured credit to those counterparties or their guarantors. The creditworthiness of all counterparties is continuously monitored.

Washington Gas, WGL Energy Services and WGL Midstream are also subject to the collateral requirements of their counterparties. At December 31, ~~2016,~~2017, Washington Gas, WGL Energy Services and WGL Midstream provided ~~$6.5~~$8.1 million, ~~$23.7~~$42.4 million and ~~$28.0~~$26.7 million in cash collateral to counterparties, respectively.

The following table provides information on our credit exposure, net of collateral, to wholesale counterparties as of December 31, ~~2016~~2017 for Washington Gas, WGL Energy Services and WGL Midstream, separately.


Credit Exposure to Wholesale Counterparties (In millions)	Credit Exposure to Wholesale Counterparties (In millions)									Credit Exposure to Wholesale Counterparties (In millions)
Rating^(a)	Exposure Before Credit Collateral^(b)		Offsetting Credit Collateral Held^(c)		Net Exposure		Number of Counterparties Greater Than 10%^(d)	Net Exposure of Counterparties Greater Than 10%		Exposure Before Credit Collateral^(b)		Offsetting Credit Collateral Held^(c)		Net Exposure		Number of Counterparties Greater Than 10%^(d)	Net Exposure of Counterparties Greater Than 10%
Washington Gas
Investment Grade	$	49.7	$	13.3	$	36.4	2	$	34.0	$	37.3	$	—	$	37.3	1	$	16.0
Non-Investment Grade	0.1		0.1		—		—	—		—		—		—		—	—
No External Ratings	4.2		1.4		2.8		—	—		12.7		4.0		8.7		—	—
WGL Energy Services
Investment Grade	$	6.0	$	—	$	6.0	3	$	3.9	$	0.9	$	0.1	$	0.8	2	$	0.8
Non-Investment Grade	—		—		—		—	—		—		—		—		—	—
No External Ratings	0.7		0.1		0.6		—	—		0.3		—		0.3		1	0.1
WGL Midstream
Investment Grade	$	74.0	$	2.0	$	72.0	1	$	20.2	$	71.8	$	3.0	$	68.8	1	$	15.9
Non-Investment Grade	3.3		3.3		—		—	—		—		—		—		—	—
No External Ratings	16.4		2.1		14.3		—	—		27.3		2.9		24.4		—	—

^(a)

Investment grade is primarily determined using publicly available credit ratings of the counterparty. If the counterparty has provided a guarantee by a higher-rated entity (e.g., its parent), it is determined based upon the rating of it guarantor. Included in “Investment grade” are counterparties with a minimum Standard & Poor’s or Moody’s Investor Service rating of BBB- or Baa3, respectively.


^(b)	Includes the net of all open positions on energy-related derivatives subject to mark-to-market accounting requirements and the net receivable/payable for the realized transactions. Amounts due from counterparties are offset by liabilities payable to those counterparties to the extent that contractual netting arrangements are in place.


^(c)	Represents cash deposits and letters of credit received from counterparties, not adjusted for probability of default.


^(d)	Using a percentage of the net exposure.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

Retail Credit Risk

Washington Gas is exposed to the risk of non-payment of utility bills by certain of its customers. To manage this customer credit risk, Washington Gas may require cash deposits from its high risk customers to cover payment of their bills until the requirements for the deposit refunds are met. In addition, Washington Gas has a ~~purchase of receivables (POR)~~POR program in Maryland, whereby it purchases receivables from participating energy marketers at approved discount rates. Under the program, Washington Gas is exposed to the risk of non-payment by the retail customers for these receivables. This risk is factored into the approved discount rate at which Washington Gas purchases the receivables.

WGL Energy Services is also exposed to the risk of non-payment by its retail customers. WGL Energy Services manages this risk by evaluating the credit quality of certain new customers as well as by monitoring collections from existing customers. To the extent necessary, WGL Energy Services can obtain collateral from, or terminate service to, its existing customers based on credit quality criteria. In addition, WGL Energy Services participates in POR programs with certain Maryland, District of Columbia and Pennsylvania utilities, whereby it sells its receivables to various utilities at approved discount rates. Under the POR programs, WGL Energy Services is exposed to the risk of non-payment by its retail customers for delivered commodities that have not yet been billed. Once the invoices are billed, however, the associated credit risk is assumed by the purchasing utilities that sponsor POR programs. While participation in POR programs reduces the risk of collection and fixes a discount rate on the receivables, there is a risk that the discount rate paid to participate in the POR program will exceed the actual bad debt expense and billing fees associated with these receivables.

WGL Energy Systems is subject to retail credit risk associated with customers who purchase electricity under long term agreements from distributed generation assets owned by the company. The customers undergo credit evaluation prior to contract

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Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

execution and are monitored periodically during the contract term for payment performance and credit quality. These steps mitigate credit risk associated with the distributed generation asset customers.

At December 31, 2017, WGSW iswas indirectly subject to retail credit risk associated with non-payment by customers who lease distributed energy equipment or maintain energy service agreements through ~~ASD Solar LP, Nextility, SunEdison, SFEE, SFGF and SFRC.~~affiliates. This credit risk was mitigated through minimum credit quality criteria established in each of WGSW’s agreements for customer agreements. These criteria were satisfied to enable WGSW to participate in the project financing arrangement or partnership interest. Refer to Note 11, Other Investments of the Notes to Condensed Consolidated Financial Statements for a further discussion of these investments.

WGL Midstream is not subject to retail credit risk.

MARKET RISK

We are exposed to various forms of market risk including commodity price risk, weather risk and interest-rate risk. The following discussion describes these risks and our management of them.

Price Risk Related to the Regulated Utility Segment

Washington Gas faces price risk associated with the purchase and sale of natural gas. Washington Gas generally recovers the cost of the natural gas to serve customers through gas cost recovery mechanisms as approved in jurisdictional tariffs; therefore, a change in the price of natural gas generally has no direct effect on Washington Gas’ net income. However, Washington Gas is responsible for following competitive and reasonable practices in purchasing natural gas for its customers.

To manage price risk associated with its natural gas supply to its firm customers, Washington Gas: (i) actively manages its gas supply portfolio to balance sales and delivery obligations; (ii) injects natural gas into storage during the summer months when prices are generally lower, and withdraws that gas during the winter heating season when prices are generally higher and (iii) enters into hedging contracts and other contracts that may qualify as derivative instruments related to the sale and purchase of natural gas.

Washington Gas executes commodity-related physical and financial contracts in the form of forward, futures and option contracts as part of an asset optimization program that is managed by its internal staff. Under this program, Washington Gas realizes value from its long-term natural gas transportation and storage capacity resources when they are not being fully used to serve utility customers. Regulatory sharing mechanisms in all three jurisdictions allow the profit from these transactions to be shared between Washington Gas’ customers and shareholders.

The following two tables summarize the changes in the fair value of our net assets (liabilities) associated with the Regulated Utility segment’s energy-related derivatives during the three months ended December 31, ~~2016:~~

2017.



Regulated Utility Segment Changes in Fair Value of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2017	$	(121.3	)
Net fair value of contracts entered into during the period	1.9
Other changes in net fair value	(10.3		)
Realized net settlement of derivatives	5.7
Net assets (liabilities) at December 31, 2017	$	(124.0	)



Regulated Utility Segment Roll Forward of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2017	$	(121.3	)
Recorded to income	(2.6		)
Recorded to regulatory assets/liabilities	(5.8		)
Realized net settlement of derivatives	5.7
Net assets (liabilities) at December 31, 2017	$	(124.0	)

The maturity dates of our net assets (liabilities) associated with the regulated utility segment’s energy-related derivatives recorded at fair value at December 31, 2017, is summarized in the following table based on the level of the fair value calculation under ASC Topic 820:

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

Regulated Utility Segment
Changes in Fair Value of Energy-Related Derivatives
(In millions)

Net assets (liabilities) at September 30, 2016 $ (257.4 )
Net fair value of contracts entered into during the period (1.4 )
Other changes in net fair value 35.7
Realized net settlement of derivatives 4.4
Net assets (liabilities) at December 31, 2016 $ (218.7 )

Regulated Utility Segment
Roll Forward of Energy-Related Derivatives
(In millions)

Net assets (liabilities) at September 30, 2016 $ (257.4 )
Recorded to income 14.7
Recorded to regulatory assets/liabilities 19.6
Realized net settlement of derivatives 4.4
Net assets (liabilities) at December 31, 2016 $ (218.7 )

The maturity dates of our net assets (liabilities) associated with the regulated utility segment’s energy-related derivatives recorded at fair value at December 31, 2016, is summarized in the following table based on the level of the fair value calculation under ASC Topic 820:


Regulated Utility Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives	Regulated Utility Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives																					Regulated Utility Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives

(In millions)	Remainder of 2017			2018			2019			2020			2021			Thereafter			Total			Remainder of 2018			2019			2020			2021			2022			Thereafter			Total
Level 1 — Quoted prices in active markets	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Level 2 — Significant other observable inputs	(8.5		)	(1.4		)	—			—			—			—			(9.9		)	0.9			0.5			—			—			—			—			1.4
Level 3 — Significant unobservable inputs	(27.8		)	(34.6		)	(20.8		)	(20.5		)	(18.8		)	(86.3		)	(208.8		)	(19.3		)	(12.8		)	(9.4		)	(8.4		)	(9.5		)	(66.0		)	(125.4		)
Total net assets (liabilities) associated with our energy-related derivatives	$	(36.3	)	$	(36.0	)	$	(20.8	)	$	(20.5	)	$	(18.8	)	$	(86.3	)	$	(218.7	)	$	(18.4	)	$	(12.3	)	$	(9.4	)	$	(8.4	)	$	(9.5	)	$	(66.0	)	$	(124.0	)

Refer to Note 8, Derivative and Weather-Related Instruments and Note 9, Fair Value Measurements of the Notes to Condensed Consolidated Financial Statements for a further discussion of our derivative activities and fair value measurements.

Price Risk Related to the Non-Utility Segments

Retail ~~Energy-Marketing.~~Energy Marketing. Our retail energy-marketing subsidiary, WGL Energy Services, sells natural gas and electricity to retail customers at both fixed and indexed prices. WGL Energy Services must manage daily and seasonal demand fluctuations for these products with its suppliers. Price risk may exist to the extent WGL Energy Services does not closely match the timing and volume of natural gas and electricity it purchases with the related fixed price or indexed sales commitments. WGL Energy Services’ risk management policies and procedures are designed to minimize this risk.

A portion of WGL Energy Services’ annual natural gas sales volumes is subject to variations in customer demand associated with fluctuations in weather and other factors. Purchases of natural gas to fulfill retail sales commitments are generally made under fixed-volume contracts based on certain weather assumptions. If there is significant deviation from normal weather or from other factors that affect customer usage or utility delivery requirements, purchase commitments may differ significantly from actual customer usage. To the extent that WGL Energy Services cannot match its customer requirements and supply commitments, it may be exposed to commodity price and volume variances, which could negatively impact expected gross margins (refer to the section entitled “Weather Risk” for further discussion of our management of weather risk). WGL Energy Services manages these risks through the use of derivative instruments, including financial products.

WGL Energy Services procures electricity supply under contract structures in which WGL Energy Services assumes the responsibility of matching its customer requirements with its supply purchases. WGL Energy Services assembles the various components of supply, including electric energy from various suppliers, and capacity, ancillary services and transmission service from the PJM Interconnection, a regional transmission organization, in matching its customer requirements obligations. While the capacity and transmission costs within PJM are generally stable and identifiable several years into the future, the cost of ancillary services which support the reliable operation of the transmission system does fluctuate as changes occur in the

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

balance between generation and the consumption mix within the electric system. WGL Energy Services could be exposed to price risk associated with changes in ancillary costs due to lack of available forward market products to sufficiently hedge those risks. Commercial retail contracts for larger customers often include terms which permit WGL Energy Services to pass through regulatory approved changes in capacity and transmission costs, as well as some changes in ancillary costs. These terms reduce the price risk exposure related to these changes for WGL Energy Services.

To the extent WGL Energy Services has not sufficiently matched its customer requirements with its supply commitments, it could be exposed to ~~electricity~~electric commodity price risk. WGL Energy Services manages this risk through the use of derivative instruments, including financial products.

WGL Energy Services’ electric business is also exposed to fluctuations in weather and varying customer usage. Purchases generally are made under fixed-price, fixed-volume contracts that are based on certain weather assumptions. If there are significant deviations in weather or usage from these assumptions, WGL Energy Services may incur price and volume variances that could negatively impact expected gross margins (refer to the section entitled “Weather Risk” for further discussion of our management of weather risk).

The following two tables summarize the changes in the fair value of our net assets (liabilities) associated with the Retail Energy-Marketing segment’s energy-related derivatives during the three months ended December 31, ~~2016:~~2017:

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Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)


Retail Energy-Marketing Segment Changes in Fair Value of Energy-Related Derivatives	Retail Energy-Marketing Segment Changes in Fair Value of Energy-Related Derivatives			Retail Energy-Marketing Segment Changes in Fair Value of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2016	$	(17.0	)
Net assets (liabilities) at September 30, 2017				$	(11.8	)
Net fair value of contracts entered into during the period	1.3			(1.2		)
Other changes in net fair value	15.2			(1.7		)
Realized net settlement of derivatives	(0.7		)	(1.2		)
Net assets (liabilities) at December 31, 2016	$	(1.2	)
Net assets (liabilities) at December 31, 2017				$	(15.9	)


Retail Energy-Marketing Segment Roll Forward of Energy-Related Derivatives	Retail Energy-Marketing Segment Roll Forward of Energy-Related Derivatives			Retail Energy-Marketing Segment Roll Forward of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2016	$	(17.0	)
Net assets (liabilities) at September 30, 2017				$	(11.8	)
Recorded to income	19.6			(1.6		)
Recorded to accounts payable	(3.1		)	(1.3		)
Realized net settlement of derivatives	(0.7		)	(1.2		)
Net assets (liabilities) at December 31, 2016	$	(1.2	)
Net assets (liabilities) at December 31, 2017				$	(15.9	)

The maturity dates of our net assets (liabilities) associated with the ~~Retail Energy-Marketing~~retail energy-marketing segments’ energy-related derivatives recorded at fair value at December 31, ~~2016~~2017 is summarized in the following table based on the level of the fair value calculation under ASC Topic 820:


Retail Energy-Marketing Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives	Retail Energy-Marketing Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives																			Retail Energy-Marketing Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives

(In millions)	Remainder of 2017			2018			2019			2020			2021		Thereafter		Total			Remainder of 2018			2019			2020			2021			2022		Thereafter		Total
Level 1 — Quoted prices in active markets	$	—		$	—		$	—		$	—		$	—	$	—	$	—		$	—		$	—		$	—		$	—		$	—	$	—	$	—
Level 2 — Significant other observable inputs	8.1			1.8			(0.9		)	(0.5		)	—		—		8.5			(0.6		)	(2.2		)	(0.7		)	—			—		—		(3.5		)
Level 3 — Significant unobservable inputs	(3.0		)	(5.8		)	(1.0		)	0.1			—		—		(9.7		)	(2.1		)	(6.0		)	(3.0		)	(1.3		)	—		—		(12.4		)
Total net assets (liabilities) associated with our energy-related derivatives	$	5.1		$	(4.0	)	$	(1.9	)	$	(0.4	)	$	—	$	—	$	(1.2	)	$	(2.7	)	$	(8.2	)	$	(3.7	)	$	(1.3	)	$	—	$	—	$	(15.9	)

Commercial Energy Systems. WGL Energy Systems sells energy (both electricity and thermal) and RECs from distributed generation assets. The sale of energy is under long term power purchase agreements (PPAs) with a general duration of 20 years, while the sale of RECs are usually under shorter term or immediate delivery contracts. Weather patterns have an effect on WGL Energy Systems solar generation assets to the extent that output is reduced. WGL Energy Systems may also be exposed to REC price risk. The REC market has limited visibility to forward market prices. WGL Energy Systems seeks to mitigate this price

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

risk by entering into bundled energy and REC long-term purchase agreements and independent forward REC sale agreements, when possible.

WGL Energy Systems also earns revenues by providing energy efficiency and sustainability solutions to governmental agencies pursuant to various contractual vehicles, including the area wide contract. WGL Energy Systems earns margins between the price at which the solutions are sold and the cost to design and build them. Margins may be eroded by an underestimation of costs. WGL Energy Systems also conducts business with government agencies and faces future revenue risks relating to such government agencies not receiving appropriations funding or projects being unfunded by Congress.

WGSW holds project financing arrangements, whereby it holds an interest in a limited partnership that acquires distributed generation solar assets at fair market value and leases back those assets to counterparties, with a fixed a target rates of return over terms between 6-20 years. WGSW also enters into arrangements in which investment partners purchase solar assets and ~~lease~~leases them to retail customers. In these cases, the purchased solar assets are expected to achieve a target rate of return from the lease payments that are collected from the retail customers. WGSW manages this price risk through its investment agreements and evaluation of the asset purchase in conjunction with the inception of the lease.

Midstream Energy Services. WGL Midstream engages in wholesale commodity transactions to optimize its owned and managed natural gas assets. Price risk exists to the extent WGL Midstream does not closely match the volume of physical

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

natural gas in storage with the related forward sales entered into as hedges. WGL Midstream seeks to mitigate this risk by actively managing and hedging these assets in accordance with corporate risk management policies and procedures. Depending upon the nature of its forward hedges, WGL Midstream may also be exposed to fluctuations in mark-to-market valuations based on changes in forward price curves. WGL Midstream pays fixed, fair market prices for its owned storage assets and is subject to variations in annual summer-winter price differentials associated with weather and other market factors. To the extent there are significant variations in weather, WGL Midstream may incur price variances that negatively impact expected gross margins (refer to the section entitled “Weather Risk” for further discussion of our management of weather risk). WGL Midstream manages this risk through the use of derivative instruments, including financial products.

The following two tables summarize the changes in the fair value of our net assets (liabilities) associated with the Midstream Energy Services segments’ energy-related derivatives during the three months ended December 31, ~~2016:~~2017:


Midstream Energy Services Segment Changes in Fair Value of Energy-Related Derivatives	Midstream Energy Services Segment Changes in Fair Value of Energy-Related Derivatives			Midstream Energy Services Segment Changes in Fair Value of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2016	$	(19.9	)
Net assets (liabilities) at September 30, 2017				$	11.2
Net fair value of contracts entered into during the period	(7.1		)	4.7
Other changes in net fair value	(17.9		)	11.6
Realized net settlement of derivatives	21.5			(24.2		)
Net assets (liabilities) at December 31, 2016	$	(23.4	)
Net assets (liabilities) at December 31, 2017				$	3.3


Midstream Energy Services Segment Roll Forward of Energy-Related Derivatives	Midstream Energy Services Segment Roll Forward of Energy-Related Derivatives			Midstream Energy Services Segment Roll Forward of Energy-Related Derivatives
(In millions)
Net assets (liabilities) at September 30, 2016	$	(19.9	)
Net assets (liabilities) at September 30, 2017				$	11.2
Recorded to income	(25.0		)	16.3
Realized net settlement of derivatives	21.5			(24.2		)
Net assets (liabilities) at December 31, 2016	$	(23.4	)
Net assets (liabilities) at December 31, 2017				$	3.3

The maturity dates of our net assets (liabilities) associated with the Midstream Energy Services segments’ energy-related derivatives recorded at fair value at December 31, ~~2016~~2017 is summarized in the following table based on the level of the fair value calculation under ASC Topic 820:

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~


Midstream Energy Services Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives	Midstream Energy Services Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives																				Midstream Energy Services Segment Maturity of Net Assets (Liabilities) Associated with our Energy-Related Derivatives

(In millions)	Remainder of 2017			2018			2019			2020			2021			Thereafter		Total			Remainder of 2018			2019		2020			2021		2022		Thereafter		Total
Level 1 — Quoted prices in active markets	$	—		$	—		$	—		$	—		$	—		$	—	$	—		$	—		$	—	$	—		$	—	$	—	$	—	$	—
Level 2 — Significant other observable inputs	(3.4		)	(1.6		)	—			—			—			—		(5.0		)	(6.8		)	2.1		(0.1		)					—		(4.8		)
Level 3 — Significant unobservable inputs	(5.9		)	(8.6		)	(2.3		)	(1.5		)	(0.7		)	0.6		(18.4		)	(1.0		)	2.6		1.6			0.8				4.1		8.1
Total net assets associated with our energy-related derivatives	$	(9.3	)	$	(10.2	)	$	(2.3	)	$	(1.5	)	$	(0.7	)	$	0.6	$	(23.4	)	$	(7.8	)	$	4.7	$	1.5		$	0.8	$	—	$	4.1	$	3.3

Value-at-Risk

WGL Energy Services measures the market risk of its energy commodity portfolio by determining its value-at-risk. Value-at-risk is an estimate of the maximum loss that can be expected at some level of probability if a portfolio is held for a given time period. The value-at-risk calculation for natural gas and electric portfolios include assumptions for normal weather, new customer additions and renewing customers for which supply commitments have been secured. Based on a 95% confidence interval for a one-day holding period, WGL Energy Services’ value-at-risk at December 31, ~~2016~~2017 was approximately ~~$78,300~~$6,400 and ~~$29,200,~~$47,800, related to its natural gas and electric portfolios, respectively. The high, low and average value-at-risk for natural gas and electric portfolios between the period October 1, ~~2016~~2017 and December 31, ~~2016~~2017 are noted in the table below.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

WGL Energy Services
Value-at-Risk
(In thousands) High Low Average
Natural Gas Portfolio $ 102.3
$ 24.9
$ 57.0
Electric Portfolio 58.6
12.3
36.0
Total $ 160.9
$ 37.2
$ 93.0



WGL Energy Services Value-at-Risk
(In thousands)	High		Low		Average
Natural Gas Portfolio	$	184.0	$	2.1	$	11.2
Electric Portfolio	60.2		21.9		38.6
Total	$	244.2	$	24.0	$	49.8

Weather Risk

We are exposed to various forms of weather risk in both our regulated utility and non-utility business segments. Washington Gas’ operations are seasonal, with a significant portion of its revenues derived from the delivery of natural gas to residential and commercial heating customers during the winter heating season. Weather conditions directly influence the volume of natural gas delivered by Washington Gas. Weather patterns tend to be more volatile during “shoulder” months within our fiscal year in which Washington Gas is going into or coming out of the primary portion of its winter heating season. During the shoulder months within quarters ending December 31 (particularly in October and November) and June 30 (particularly in April and May), customer heating usage may not highly correlate with historical levels or with the level ~~of heating degree days (HDDs)~~HDDs that occur, particularly when weather patterns experienced are not consistently cold or warm.

To the extent Washington Gas does not have weather related instruments or billing adjustment mechanisms in place, its revenues are volume driven and its current rates are based upon an assumption of normal weather. In the District of Columbia, without weather protection strategies, variations from normal weather will cause our earnings to increase or decrease depending on the weather pattern.

The financial results of our retail energy-marketing business, WGL Energy Services, are affected by variations from normal weather primarily in the winter relating to its natural gas sales, and throughout the fiscal year relating to its electricity sales. WGL Energy Services manages these weather risks with, among other things, weather related instruments.

Weather patterns have an effect on WGL Energy Systems solar generation assets to the extent that output is reduced. WGL Energy Systems seeks to mitigate weather risk by negotiating unit contingency and other measures to limit exposure in the PPAs.

Variations from normal weather may also affect the financial results of our wholesale energy business, WGL Midstream, primarily with regards to summer-winter price differentials between time periods and transportation delivery locations throughout the fiscal year. WGL Midstream manages these weather risks with, among other things, physical and financial hedging products.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

Billing Adjustment Mechanisms. In Maryland, Washington Gas has a Revenue Normalization Adjustment (RNA) billing mechanism that is designed to stabilize the level of net revenues collected from Maryland customers by eliminating the effect of deviations in customer usage caused by variations in weather from normal levels and other factors such as conservation. In Virginia, Washington Gas has a Weather Normalization Adjustment (WNA) billing adjustment mechanism that is designed to eliminate the effect of variations in weather from normal levels on utility net revenues. Additionally, in Virginia, as part of the Conservation and Ratemaking Efficiency (CARE) plan, Washington Gas has a CARE Ratemaking Adjustment (CRA) mechanism that, in conjunction with the WNA, eliminates the effect of both weather and other factors such as conservation for residential, small commercial and industrial and group metered apartment customers.

For the RNA, WNA and CRA mechanisms, periods of colder-than-normal weather generally would cause Washington Gas to record a reduction to its revenues and establish a refund liability to customers, while the opposite would generally result during periods of warmer-than-normal weather. However, factors such as volatile weather patterns and customer conservation may cause the RNA and the CRA mechanisms to function conversely because they adjust billed revenues to provide a designed level of net revenue per meter.

Weather-Related Instruments. WGL Energy Services utilizes ~~heating degree day (HDD)~~HDD instruments from time to time to manage weather risks related to its natural gas and electricity sales. WGL Energy Services also utilizes cooling degree day (CDD) instruments and other instruments to manage weather and price risks related to its electricity sales during the summer cooling season. These instruments cover a portion of estimated revenue or energy-related cost exposure to variations in HDDs or CDDs. Refer to Note 8—Derivative and Weather-Related Instruments of the Notes to Condensed Consolidated Financial Statements for further discussion of the accounting for these weather-related instruments.

Interest-Rate Risk

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

We are exposed to interest-rate risk associated with our short-term and long-term financing. WGL and Washington Gas utilize derivative instruments from time to time in order to reduce their exposure to the risk of interest-rate volatility.

Short-Term Debt. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL and its subsidiaries had outstanding notes payable and project financing of ~~$634.4~~$558.7 million and ~~$331.4~~$559.8 million, respectively. The carrying amount of our short-term debt approximates fair value. A change of 100 basis points in the underlying average interest rate for our short-term debt would have caused a change in interest expense of approximately ~~$2.1~~$3.2 million for the quarter.

Long-Term Debt. At December 31, ~~2016~~2017 and September 30, ~~2016,~~2017, WGL had outstanding fixed-rate and variable rate MTNs and other long-term debt of ~~$1,435.2~~$1,679.9 million and ~~$1,435.0~~$1,430.9 million, respectively, excluding current maturities. While fixed-rate debt does not expose us to earnings risk when market interest rates change, such debt is subject to changes in fair value. Fair value is defined as the present value of the debt securities’ future cash flows discounted at interest rates that reflect market conditions as of the measurement date. As of December 31, ~~2016,~~2017, the fair value of WGL’s debt was ~~$1,540.6~~$1,842.8 million. Our sensitivity analysis indicates that fair value would increase by approximately ~~$63.6~~$74.6 million or decrease by approximately ~~$58.4~~$69.1 million if interest rates were to decline or increase by 10%, respectively, from current market levels. At December 31, ~~2016,~~2017, Washington Gas had outstanding fixed-rate MTNs and other long-term debt of ~~$939.1~~$1,084.6 million, excluding current maturities. As of December 31, ~~2016,~~2017, the fair value of Washington Gas’ fixed-rate debt was ~~$1,042.6~~$1,232.9 million. Our sensitivity analysis indicates that fair value would increase by approximately ~~$51.3~~$61.8 million or decrease by approximately ~~$47.3~~$57.3 million if interest rates were to decline or increase by 10%, respectively, from current market levels. In general, such an increase or decrease in fair value would impact earnings and cash flows only if WGL or Washington Gas were to reacquire some or all of these instruments in the open market prior to their maturity.

A total of ~~$1,052.5~~$1,202.6 million, or approximately ~~72.8%~~70.9% of the face amount of WGL’s outstanding long-term debt, excluding current maturities, have make-whole call options which, if exercised, would require us to pay a premium over the face amount.

A total of ~~$802.5~~$952.5 million, or approximately ~~84.8%~~86.9% of the face amount of Washington Gas’ outstanding long-term debt, excluding current maturities, have make-whole call options which, if exercised, would require us to pay a premium over the face amount.

On October 1, 2016, WGL and Washington Gas adopted ASU 2015-03 and ASU 2015-15. This standard requires an entity to account for debt issuance costs as a valuation account presented as a deduction from the face amount of debt in the balance sheet. Prior period amounts related to long-term debt in the accompanying condensed balance sheets have been reclassified to conform to the current period presentation.

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

Derivative Instruments. ~~WGL expected to issue 30-year debt in January 2018.~~ In anticipation of the issuance of 30-year debt, ~~issuance,~~ WGL entered into forward starting interest rate swaps with a total notional amount outstanding of $250.0 million, to hedge the variability in future interest payments. WGL designated these interest rate swaps as cash flow hedges. ~~The~~Through December 31, 2016, the effective portion of changes in fair value iswas reported as a component of other comprehensive income (loss). As a result of certain covenants related to the proposed merger with AltaGas, in January 2017, WGL de-designated these ~~hedges.~~hedges and began recording charges in their fair value in interest expense. The balance in accumulated other comprehensive income at December 31, ~~2016~~2017 was $6.4 million related to these hedges. In January 2018, WGL settled these swaps and realized a gain of $13.8 million, of which approximately $13.2 million will be recorded to interest expense. Although WGL did not issue 30-year debt with this settlement, it remains reasonably possible that we may issue this debt within the originally designated two year hedging period.

Refer to Note 8 - Derivative and Weather-Related Instruments of the Notes to Condensed Consolidated Financial Statements for a further discussion of our interest-rate risk management ~~activity and to Note 16 —~~ ~~Subsequent Events~~ ~~for a discussion of the proposed merger.~~ activity.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

WASHINGTON GAS LIGHT COMPANY

This section of Management’s Discussion focuses on Washington Gas for the reported periods. In many cases, explanations and disclosures for both WGL and Washington Gas are substantially the same.

RESULTS OF OPERATIONS—Three Months Ended December 31, ~~2016~~2017 vs. December 31, ~~2015~~2016

The results of operations for the regulated utility segment and Washington Gas are substantially the same; therefore, this section primarily focuses on statistical information and other information that is not discussed in the results of operations for the regulated utility segment. Refer to the section entitled “Results of Operations—Regulated Utility Operating Results” for a detailed discussion of the results of operations for the regulated utility segment.

Key gas delivery, weather and meter statistics are shown in the table below for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

														Gas Deliveries, Weather and Meter Statistics
	Three Months Ended December 31,				Increase/		Three Months Ended December 31,					Increase/
	2016		2015		(Decrease)		2017		2016			(Decrease)
Gas Sales and Deliveries (millions of therms)											��
Firm
Gas sold and delivered	265.2		197.9		67.3		282.7		265.2			17.5
Gas delivered for others	161.6		133.3		28.3		158.5		161.6			(3.1	)
Total firm	426.8		331.2		95.6		441.2		426.8			14.4
Interruptible
Gas sold and delivered	0.8		0.7		0.1		0.6		0.8			(0.2	)
Gas delivered for others	64.2		62.5		1.7		71.6		64.2			7.4
Total interruptible	65.0		63.2		1.8		72.2		65.0			7.2
Electric generation—delivered for others	23.6		43.2		(19.6	)	32.1		23.6			8.5
Total deliveries	515.4		437.6		77.8		545.5		515.4			30.1
Degree Days
Actual	1,196		956		240		1,335		1,196			139
Normal	1,318		1,331		(13	)	1,311		1,318			(7	)
Percent colder (warmer) than normal	(9.3	)%	(28.2	)%	n/a		1.8	%	(9.3	)%		n/a
Average active customer meters	1,148,900		1,135,700		13,200		1,166,700		1,148,900			17,800
New customer meters added	3,703		3,833		(130	)	3,673		3,703			(30	)

Gas Service to Firm Customers. The volume of gas delivered to firm customers is highly sensitive to weather variability as a large portion of the natural gas delivered by Washington Gas is used for space heating. Washington Gas’ rates are based on an assumption of normal weather. The tariffs in the Maryland and Virginia jurisdictions include provisions that consider the effects of the RNA and the WNA/CRA mechanisms, respectively, that are designed to, among other things, eliminate the effect on net revenues of variations in weather from normal levels (refer to the section entitled “Weather Risk” for further discussion of these mechanisms and other weather-related instruments included in our weather protection strategy). The comparison of firm volumes delivered for the current quarter compared to the prior quarter primarily reflects ~~significantly~~ colder weather in the current ~~quarter, as well as an increase in average active customer meters.~~quarter.

Gas Service to Interruptible Customers. Washington Gas must curtail or interrupt service to this class of customer when the demand by firm customers exceeds specified levels.

In the District of Columbia, the effect on net income of any changes in delivered volumes and prices to interruptible customers is limited by margin-sharing arrangements that are included in Washington Gas’ firm rate designs. Rates for interruptible customers in Maryland and Virginia are based on a traditional cost of service approach. In Virginia, Washington Gas retains a majority of the margins earned on interruptible gas and delivery sales. Washington Gas shares actual non-gas margins from interruptible sales service customers that are in excess of delivery service rates. In Maryland, Washington Gas retains a defined amount of revenues based on a set threshold.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

retains a defined amount of revenues based on a set threshold. The comparison for the current quarter compared to the prior quarter primarily reflects colder weather in the current quarter, as well as conversions of certain interruptible customers to firm service.

Gas Service for Electric Generation. Washington Gas delivers natural gas for use at two electric generation facilities in Maryland that are each owned by companies independent of WGL. Washington Gas shares with firm customers a significant majority of the margins earned from natural gas deliveries to these customers. Therefore, changes in the volume of interruptible gas deliveries to these customers do not materially affect either net revenues or net income.

Interest Expense

Washington Gas' interest expense for the three months ended December 31, 2017 and 2016 ~~and 2015~~ was ~~$12.8~~$15.0 million and ~~$10.3~~$12.8 million, respectively. The increase in interest onexpense primarily reflects the issuance of additional long-term debt ~~primarily comprises debt issued~~ by Washington ~~Gas in fiscal year 2016.~~Gas.

Income Taxes

The following table shows Washington Gas' income tax expense and effective income tax rate for the three months ended December 31, ~~2016~~2017 and ~~2015.~~2016.

																	Income Taxes
	Three Months Ended December 31,						Increase/			Three Months Ended December 31,				Increase/
(In millions)	2016			2015			(Decrease)			2017		2016		(Decrease)
Income before income taxes	$	89.5		$	88.4		$	1.1		82.8		89.5		$	(6.7	)
Income tax expense	34.0			33.8			0.2			24.9		34.0		(9.1		)
Effective income tax rate	38.0		%	38.2		%	(0.2		)%	30.1	%	38.0	%	(7.9		)%
Income tax expense										24.9		34.0		(9.1		)
Less Discrete re-measurement impact of Tax Act										6.2		—		6.2
Income tax expense excluding discrete re-measurement impact										18.7		34.0		(15.3		)
Effective income tax rate excluding discrete re-measurement impact										22.6	%	38.0	%	(15.4		)%

The decrease in the effective income tax rate is due to the enactment of the Tax Act. Refer to Note 7 - Income Taxes of the Notes to Condensed Consolidated Financial Statements for a detailed discussion.

LIQUIDITY AND CAPITAL RESOURCES

Liquidity and capital resources for Washington Gas are substantially the same as the liquidity and capital resources discussion included in the Management’s Discussion of WGL (except for certain items and transactions that pertain to WGL and its unregulated subsidiaries). Those explanations are incorporated by reference into this discussion.

During the quarter ended December 31, 2017, WGL made a $100 million equity infusion to Washington Gas. This infusion was done to maintain Washington Gas’ equity ratio in a reasonable and comparable range.

RATES AND REGULATORY MATTERS

Washington Gas makes its requests to modify existing rates based on its determination of the level of net investment in plant and equipment, operating expenses, and a level of return on invested capital that is just and reasonable. The following is an update of significant current regulatory matters in Washington Gas’ jurisdictions. For a more detailed discussion of the matters below, refer to our combined Annual Report on Form 10-K for WGL and Washington Gas for the fiscal year ended September 30, ~~2016.~~2017.

District of Columbia Jurisdiction

~~Investigation into Washington Gas’ Cash Reimbursement to CSPs.~~ On August 5, 2014, the Office of the People’s Counsel’s (OPC) of DC filed a complaint with The Public Service Commission of the District of Columbia (PSC of DC) requesting that the Commission open an investigation into Washington Gas’ payments to CSPs to cash-out over-deliveries of natural gas supplies during the 2008-2009 winter heating season. OPC asserted that Washington Gas made excess payments in the amount of $2.4 million to CSPs. On December 19, 2014, the PSC of DC granted the OPC of DC’s request and opened a formal investigation. On October 27, 2015, the PSC of DC issued an order finding that Washington Gas, in performing the cash-out, had violated D.C. Code 34-1101’s requirement that no service shall be provided without Commission approval. The PSC of DC directed Washington Gas to provide calculations showing what the impact would have been had Washington Gas made volumetric adjustments to CSP deliveries as of April 2009, which Washington Gas calculates would result in a refund of approximately $2.4 million, which was recognized by WGL in fiscal year 2015. On February 3, 2016, the PSC of DC issued an order denying OPC’s application for reconsideration and granting in part, and denying in part, Washington Gas’ application for reconsideration. Washington Gas and OPC filed initial briefs on February 18, 2016, and reply briefs on February 29, 2016, on the issue of whether there is a more reasonable way to reconcile the over-deliveries by CSPs such as through volumetric adjustments, or through cash payments. On August 11, 2016, the PSC of DC issued an order requiring Washington Gas to refund approximately $2.4 million through the Actual Cost Adjustment ("ACA"). On

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part I—Financial Information~~

~~Item 2—Management’s Discussion and Analysis of~~

~~Financial Condition and Results of Operations (continued)~~

August 26, 2016, Washington Gas filed its plan for implementing the $2.4 million refund within a 12-month period. The PSC of DC issued an Order on October 7, 2016, clarifying Washington Gas' refunding and reporting requirements.

District of Columbia Rate Case. On February 26, 2016, Washington Gas filed an application with the PSC of DC. The application, as amended, ~~requests~~requested an increase of $17.3 million to base rates for natural gas delivery service. This request ~~includes~~included $4.5 million associated with the transfer to base rates of revenue associated with natural gas system upgrades previously approved by the PSC of DC and currently recovered through monthly surcharges. The filing ~~addresses~~addressed rate relief

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

necessary for Washington Gas to recover its costs and earn its allowed rate of return. The filing also ~~satisfies~~satisfied the requirement for Washington Gas to file a new rate proposal by August 1, 2016, under a settlement agreement approved by the PSC of DC in 2015, which provides for the recovery through a surcharge mechanism of costs related to an accelerated pipe replacement program to upgrade the Washington Gas distribution system and enhance safety.

On March 3, 2017, the PSC of DC issued an Order approving an overall increase in rates for Washington Gas of $8.5 million effective for services rendered on and after March 24, 2017. This increase is based on a hypothetical 55.7% equity component of Washington Gas' capital structure and an overall return of 7.57%, which retained the current return on equity of 9.25%. Washington Gas had requested an increase of $17.3 million, assuming a 57.8% equity component and a 10.25% return on equity. The ~~application~~PSC of DC denied Washington Gas’ request for ~~a rate increase also: (i)~~ ~~provides for~~approval of an RNA ~~in the proposed rate structure to reduce fluctuations in customers’ bills resulting from extreme weather patterns;~~ ~~(ii)~~ ~~proposes a commercial framework for the delivery of natural gas for~~and Combined Heat and Power (CHP) ~~systems, which efficiently capture vented heat during~~tariffs; however, the ~~power generation process and use this heat for space heating and cooling and~~ ~~(iii)~~ ~~proposes an~~PSC of DC approved a two-year pilot incentive program for developers of multi-family housing projects to bring the benefits of natural gas, including lower energy bills and reduced carbon emissions to more residents in the District of Columbia. ~~The~~On April 3, 2017, the Apartment and Office Building Association of Metropolitan Washington (AOBA) and DC Climate Action filed applications for reconsideration of portions of the Opinion and Order. On May 12, 2017, the PSC of DC denied the application ~~requests authority~~for reconsideration filed by AOBA and denied, in part, the application for reconsideration of DC Climate Action. Further, the PSC of DC directed its staff to ~~earn an 8.23% overall rate~~develop proposed criteria to facilitate the PSC of ~~return, including~~DC’s review of the economic benefits of the Multifamily Piping Program and submit the criteria for public comment. On June 30, 2017, the PSC of DC issued a ~~return~~Notice outlining its proposed evaluation criteria for the pilot Multifamily Piping Program. Comments on ~~equity of 10.25%.~~the proposed criteria were filed by Washington Gas ~~anticipates~~and DC Climate Action. On January 17, 2018, the PSC of DC adopted the proposed evaluation criteria, with modifications, and extended the pilot program for an additional two years.

Investigation into the Establishment of a Purchase of Receivables Program. On June 15, 2017, the PSC of DC directed Washington Gas to develop a Purchase of Receivables program for natural gas suppliers and their customers in the District of Columbia. On July 15, 2017, Washington Gas submitted its Purchase of Receivables Implementation Plan which was approved by the PSC of DC on October 19, 2017. Washington Gas expects that it will take seven to nine months to implement the ~~new~~program.

Application for Approval of Reduction of Distribution Rates. On January 12, 2018, Washington Gas filed an application with the PSC of DC for approval of reduction of distribution rates to reflect the Tax Act. Washington Gas is seeking to change current distribution service rates for all classes of customers served in the District of Columbia, effective for meter readings on and after January 29, 2018. Additionally, Washington Gas is seeking an expedited hearing and waiver of provisions of the DC code and District of Columbia municipal regulations ("DCMR") to ensure the proposed rate reductions will become effective as of February 1, 2018. On January 17, 2018, the Office of the People's Counsel filed a motion to oppose the expedited hearing and waivers. On January 23, 2018, the PSC of DC issued an Order which accepted Washington Gas' application but denied the request to waive any applicable provisions of the DC Code and DCMR, because the Order established the process under which the PSC of DC will conduct this proceeding. Washington Gas was directed to track the impact of the Tax Act on revenue requirements beginning January 1, 2018, recording all impacts to regulatory assets and liabilities. Washington Gas has been directed to file a revised application by February 12, 2018, including all work papers that support the calculation of the effect of the tax change, and including the ratemaking adjustments and across-the-board revenue reduction distributed to customer classes based on revenues approved in ~~March 2017.~~the PSC of DC's most recent rate case. Refer to Note 7 - Income Taxes of theNotes to Condensed Consolidated Financial Statements for a discussion of regulatory liabilities we have established related to tax reform.

Maryland Jurisdiction

~~Proposed Line Extension Tariff Revisions~~.Termination Notice Inquiry. On March 28, 2017, the PSC of MD initiated an investigation into the service termination notices sent by Washington Gas to its customers between December ~~7, 2016,~~1, 2013 and December 31, 2016. The case is investigating whether the service termination notices complied with Code of Maryland Regulations (COMAR). The PSC of MD’s investigation of this matter is considering whether fines and or a civil penalty should be assessed. A procedural schedule was adopted in the case, but was suspended to permit the parties to engage in settlement discussions. As of January 8, 2018, Washington Gas and the Office of the People's Counsel had reached a settlement in principle. The Staff of the PSC of MD, the Office of MD Attorney General and Montgomery County, MD and the Apartment and Office Building Association of Metropolitan Washington remain as parties or participants in the case in settlement discussions but will not

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

Item 2—Management’s Discussion and Analysis of

Financial Condition and Results of Operations (continued)

formally join the settlement. We anticipate approval of a settlement agreement during the first or second calendar quarter of 2018. At December 31, 2017, we have recorded an estimated liability of $2.0 million in connection with this matter.

Application for Approval of Reduction of Distribution Rates. On January 12, 2018, Washington Gas filed ~~a petition~~an application with the PSC of MD for approval of ~~proposed tariff revisions~~reduction of distribution rates to ~~facilitate access to natural gas in areas within Washington Gas' Maryland franchise area that are currently without natural gas service. Specifically,~~reflect the ~~petition requests approval of tariff provisions which would:~~ ~~(i)~~ ~~allow new customers to pay required contributions for extension of gas facilities over up to 20 years at the overall cost of capital, with the payment obligation remaining with the service address;~~ ~~(ii)~~ ~~authorize~~Tax Act. Washington Gas seeks to ~~perform a project assessment~~change current distribution service rates for all classes of ~~anticipated life cycle revenues to convert an area to natural gas service once Washington Gas secures service commitments from 20% of the target market~~customers served in ~~an unserved or underserved market;~~Maryland, effective for meter readings on and ~~(iii)~~ ~~authorize Washington Gas to establish a regulatory asset to defer for future collection in rates, upon approval by~~after January 29, 2018. On January 31, 2018, the PSC of MD approved the ~~property taxes, earnings and depreciation~~application effective for bills rendered on ~~qualifying transmission and main expenditures installed in identified growth areas~~or after February 1, 2018. Refer to Note 7 — .Income Taxes ~~The petition has been docketed, with~~of theNotes to Condensed Consolidated Financial Statements for a ~~final order expected in August 2017.~~discussion of regulatory liabilities we have established related to tax reform.

Virginia Jurisdiction

Virginia Rate Case. On June 30, 2016, Washington Gas filed an application with the ~~Commonwealth~~SCC of ~~Virginia State Corporation Commission (SCC of VA)~~VA to increase its base rates for natural gas service by $45.6 million, which includes $22.3 million of revenue associated with natural gas pipeline replacement initiatives previously approved by the ~~Commission~~SCC of VA and paid by customers through a monthly rider. Additionally, the proposed rate increase ~~includes~~included provisions designed to deliver the benefits of natural gas to more customers that include: (i) facilitating conversion to natural gas in locations already served by Washington Gas; (ii) expanding the natural gas system to high-growth communities in Virginia and (iii) research and development ~~that we believe will enable~~enabling innovations to enhance service for our customers.

Interim rates went into effect, subject to refund, in the December 2016 billing cycle. ~~The procedural schedule provides the following due dates for testimony: intervenors by~~Intervenors filed testimony on January 31, 2017, Staff of the SCC of VA byfiled testimony on February 28, 2017, and Washington ~~Gas'~~Gas filed its rebuttal testimony byon March 28, 2017. On April 17, 2017, Washington Gas filed with the SCC of VA a unanimous settlement as to a specific annual revenue increase, but not as to a specific return on equity, specific accounting adjustments, or specific ratemaking methodologies, except as otherwise set forth therein. The ~~public~~Stipulation set forth, for purposes of settlement, a base rate increase of $34 million (of which $14.1 million represents incremental base rate revenues over and ~~evidentiary hearing is scheduled for April 18,~~above the inclusion of SAVE Plan costs which were previously recovered through monthly surcharges). For purposes of the settlement, the mid-point of the return on equity range of 9.0-10.0% will be used in any application or filing, other than a change in base rates, effective December 1, 2016. On June 30, 2017, the Chief Hearing Examiner issued a report recommending that the SCC of VA approve the Stipulation. On September 8, 2017, Washington Gas received a final order from the SCC of VA accepting settlement subject to minor modifications to Washington Gas’ System Expansion Proposals. All parties agreed to a Revised Stipulation filed on September 20, 2017, reflecting the SCC of VA's denial of one of the System Expansion Proposals and Washington Gas’ withdrawal of the second one. The SCC of VA issued its final order approving the revised stipulation on September 25, 2017. Refunds to customers will be made related to the interim billings in accordance with the final order. On December 21, 2017, Washington Gas requested and was granted by the SCC of VA a 45-day extension to complete the refunds.

~~Affiliate Transactions.~~Application for Approval of Reduction of Distribution Rates. On ~~December 30, 2016,~~January 12, 2018, Washington Gas filed an application ~~for approval to permanently release its contracts~~ with ~~Transcontinental Gas Pipe Line Company LLC’ (“Transco”) for MarketLink and Leidy East interstate pipeline transportation capacity to WGL Midstream. The proceeding is pending review by~~ the SCC of ~~VA.~~VA for approval of reduction of distribution rates to reflect the Tax Act. Washington Gas ~~has not used the MarketLink~~seeks to change current distribution service rates for all classes of customers served in Virginia, effective for meter readings on and ~~Leidy East interstate pipeline transportation capacity~~after January 29, 2018. A decision is expected in February 2018. Refer to ~~provide gas utility service since 2012 and will not use these resources~~ Note 7 — Income Taxes for ~~system supply in the future.~~a discussion of regulatory liabilities we have established related to tax reform.

WGL Holdings, Inc.

Washington Gas Light Company

Part I—Financial Information

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The following issues related to our market risks are included under Item 2, Management’s Discussion and Analysis of Financial Condition and Results of Operations, and are incorporated by reference into this discussion.

Price Risk Related to the Regulated Utility Segment

Price Risk Related to the Non-Utility Segments

Value-At-Risk

Weather Risk

Interest-Rate Risk

ITEM 4. CONTROLS AND PROCEDURES—WGL Holdings, Inc.

Senior management, including the Chairman and Chief Executive Officer and the Senior Vice President and Chief Financial Officer of WGL, evaluated the effectiveness of WGL’s disclosure controls and procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) as of December 31, ~~2016.~~2017. Based on this evaluation process, the Chairman and Chief Executive Officer and the Senior Vice President and Chief Financial Officer have concluded that disclosure controls and procedures of WGL ~~are effective.~~were effective as of December 31, 2017. There have been no changes in the internal control over financial reporting of WGL during the quarter ended December 31, ~~2016~~2017 that have materially affected, or are reasonably likely to materially affect, the internal control over financial reporting of WGL.

ITEM 4. CONTROLS AND PROCEDURES—Washington Gas Light Company

Senior management, including the Chairman and Chief Executive Officer and the Senior Vice President and Chief Financial Officer of Washington Gas, evaluated the effectiveness of ~~the~~Washington Gas' disclosure controls and procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) ~~of Washington Gas~~ as of December 31, ~~2016.~~2017. Based on this evaluation process, the Chairman and Chief Executive Officer and the Senior Vice President and Chief Financial Officer have concluded that ~~the~~ disclosure controls and procedures of Washington Gas ~~are effective.~~were effective as of December 31, 2017. There have been no changes in the internal control over financial reporting of Washington Gas during the quarter ended December 31, ~~2016~~2017 that have materially affected, or are reasonably likely to materially affect, the internal control over financial reporting of Washington Gas.

WGL Holdings, Inc.

Washington Gas Light Company

Part II—Other Information

ITEM 1. LEGAL PROCEEDINGS

The nature of our business ordinarily results in periodic regulatory proceedings before various state and federal authorities. For information regarding pending federal and state regulatory matters, see Note 13—Commitments and Contingencies of the Notes to Condensed Consolidated Financial Statements.

Silver Spring, Maryland Incident

Washington Gas continues to support the investigation by the NTSB into the August 10, 2016 explosion and fire at an apartment complex on Arliss Street in Silver Spring, Maryland, the cause of which has not been determined. Additional information will be made available by the NTSB at the appropriate time. ~~On November 2, 2016, two~~A total of 40 civil actions ~~were~~related to the incident have been filed ~~in the District of Columbia Superior Court~~ against WGL ~~Holdings~~ and Washington Gas ~~(as well as a property management company that is not affiliated with WGL Holdings or Washington Gas), by residents~~in the Circuit Court for Montgomery County, Maryland. Thirty-nine of ~~the apartment complex. In one lawsuit, twenty-nine plaintiffs~~these suits seek unspecified damages for ~~among others, wrongful death and~~ personal ~~injury.~~injury and/or property damage. The ~~other~~final action is a class action suit seeking total damages stated to be less than $5 million for, among others, property damage and various counts relating to the loss of the use of the premises. ~~Both actions allege causes~~Two of ~~action for negligence, product liability, and declaratory relief. Eighteen civil actions have been~~the 40 cases were originally filed in the ~~Circuit~~District of Columbia Superior Court, ~~for Montgomery County,~~but were dismissed. Those two actions were re-filed in Maryland ~~seeking unspecified damages for personal injury and property damage.~~on November 27, 2017. We maintain excess liability insurance coverage from highly-rated insurers, subject to a nominal self-insured retention. We believe that this coverage will be sufficient to cover any significant liability to it that may result from this incident. Management is unable to determine a range of potential losses that are reasonably possible of occurring and therefore we have not recorded a reserve associated with this incident. Washington Gas was invited by the NTSB to be a party to the investigation and in that capacity, continues to work closely with the NTSB to help determine the cause of this incident.

~~The nature of~~ Information about our ~~business ordinarily results~~obligations as a signed party to the investigation can be found in ~~periodic regulatory proceedings before various state and federal authorities. For information regarding pending federal and state regulatory matters, see Note 13—Commitments and Contingencies~~the form of the ~~Notes~~Certificate of Party Representation, which is available on the investigations page of the NTSB website (http://www.ntsb.gov/legal/Documents/NTSB_Investigation_Party_Form.pdf), and 49 CFR 831.13. On August 14, 2017, the NTSB opened the public docket related to ~~Condensed Consolidated Financial Statements.~~its ongoing investigation.

WGL Holdings, Inc.

Washington Gas Light Company

Part II—Other Information

ITEM 1A. RISK FACTORS

~~Risks Relating to~~RISKS RELATING TO WGL AND ALL OF ITS SUBSIDIARIES

U.S. federal income tax reform could adversely affect WGL.

On December 22, 2017, President Trump signed into law the ~~Proposed Merger with AltaGas~~

~~The proposed merger with AltaGas is subject to shareholder and regulatory approval.~~

~~On January 25, 2017,~~Tax Act, which significantly reforms the Internal Revenue Code of 1986, as amended. While WGL ~~and AltaGas entered into a Merger Agreement for WGL to be acquired by AltaGas in~~has made an ~~all cash transaction valued at approximately $6.4 billion. Consummation~~initial assessment of the ~~Merger is subject to the satisfaction or waiver of specified closing conditions, including~~ ~~(i)~~ ~~the approval~~impacts of the ~~Merger by~~Tax Act on it and its subsidiaries, it is unknown at this time how the ~~holders of more than two-thirds~~Treasury Department may interpret certain provisions of the ~~outstanding shares of WGL common stock,~~ ~~(ii)~~ the receipt of regulatory approvals required to consummate the Merger, including approval from the Public Service Commission of the District of Columbia, the Public Service Commission of Maryland, the State Corporation Commission of Virginia, the Federal Energy Regulatory Commission and the Committee on Foreign Investment in the United States, ~~(iii)~~ ~~the expiration or termination of the applicable waiting period under HSR,~~ ~~(iv)~~ ~~the absence of any order of any governmental authority and the absence of the enactment of any law, in each case that enjoins, prohibits or makes illegal the consummation of the Merger, and~~ ~~(v)~~ other customary closing conditions, including (a) the accuracy of each party’s representations and warranties (subject to customary materiality qualifiers), and (b) each party’s compliance in all material respects with its obligations and covenants contained in the Merger Agreement. In addition, the obligations of AltaGas and its merger subsidiary to consummate the Merger are subject to (a) the absence of a Company Material Adverse Effect (as defined in the Merger Agreement) and (b) the required regulatory approvals and any law not imposing or requiring any undertakings, terms, conditions, obligations, commitments, sanctions or remedial actions that constitute a Burdensome Condition (as defined in the Merger Agreement).

WGL may not receive the required statutory approvals and other clearances for the Merger, or they may not be received in a timely manner. If such approvals are received, they may impose terms, conditions or restrictions ~~(i)~~ ~~that cause a failure of the closing conditions set forth in the Merger Agreement, or~~ ~~(ii)~~Tax Act. These interpretations could have a ~~detrimental~~negative impact on the combined company following completion of the Merger. A substantial delay in obtaining the required authorizations, approvals or consents or the imposition of unfavorable terms, conditions or restrictions could prevent the completion of the Merger. Even after the expiration of the waiting period under HSR, government authorities could seek to block or challenge the Merger as they deem necessary or desirable in the public interest.

~~Failure to complete the Merger could adversely affect WGL’s stock price and future business operations and financial results.~~

~~WGL Holdings, Inc.~~

~~Washington Gas Light Company~~

~~Part II—Other Information~~

If WGL is unable to complete the Merger, holders of WGL common stock will not receive any payment for their shares pursuant to the Merger Agreement. WGL’s ongoing business may be adversely affected and would be subject to a number of risks, including the following:

~~WGL would have paid significant transaction costs, and may in certain circumstances, be obligated to pay a termination fee to AltaGas of $136 million;~~

~~the attention of management may have been diverted to the Merger rather than to operations and the pursuit of other opportunities;~~

though the merger terms contemplate management and employees remaining to operate WGL, there is the chance of the potential loss of key personnel, as personnel may feel uncertain about their future with the combined company;

WGL will have been subject to certain restrictions on the conduct of business, which may prevent the Company from making certain acquisitions or dispositions or pursuing other business opportunities; and

~~the trading price of WGL’s stock may decline if the market believes the Merger may not be completed.~~

Failure to complete the Merger may result in negative publicity, additional litigation against WGL or its directors and officers, and a negative impression of WGL in the investment community. The occurrence of these events, individually or in the aggregate, could have a material adverse effect on the results of operations, cash flows and financial condition of WGL and its subsidiaries. One impact of the decrease in the federal corporate tax rate under the Tax Act is the refund of excess deferred income taxes to ratepayers and the resulting decrease in revenues from regulated operations. WGL has filed proposals for the amount and timing of such refunds with the commissions in each of its jurisdictions. The proposed refunds remain subject to regulatory approval and oversight.

The Tax Act may impact WGL’s ability to use its net operating loss carryforwards.

The Tax Act includes a limitation on the utilization of certain net operating losses to 80% of current year taxable income and, for these certain net operating losses, eliminates carrybacks. Such net operating losses have an unlimited carryforward. These provisions may affect the timing of the utilization of net operating loss carryforwards and investment tax credit carryforwards.

RISKS RELATING TO THE NON-UTILITY SUBSIDIARIES OF WGL

Returns on our non-utility subsidiaries’ investments in renewable energy projects are dependent upon regulatory and tax incentives, which may expire or be reduced or modified.

WGL Energy Systems derives a significant portion of its revenues from the sale of solar renewable energy credits (SRECs), which are produced as a result of owning and operating commercial distributed energy systems. The value of these SRECs is determined by markets in the states where the distributed energy systems are installed, which are driven by state laws relating to renewable portfolio standards or alternative compliance payment requirements for renewable energy. Overbuilding of distributed energy systems in these states or legislative changes reducing renewable portfolio standards or alternative compliance payment requirements could negatively impact the price of ~~WGL’s common stock.~~SRECs that we sell and the value of the SRECs that we hold in our portfolio.

In addition, WGL Energy Systems and WGSW’s investment strategy of participating with counterparties in energy-related investments, or to directly own and operate energy assets and sell energy to customers, has historically allowed us to benefit from incentives in the federal tax code. WGL’s ~~business will be impacted by~~ability to continue to benefit from these investments is based on certain assumptions about the ~~terms~~level of our income taxes and ~~conditions of the Merger Agreement.~~

The Merger Agreement restricts WGL, without AltaGas’s consent, from undertaking certain specified actions until the Merger occurs or the Merger Agreement terminates. These restrictions may prevent WGL from pursuing otherwise attractive business opportunities and making other changesour ability to ~~its business prior~~utilize tax incentives to ~~completion of the Merger or termination of the Merger Agreement.~~

~~WGL will incur significant costs associated~~reduce our tax burden. Our ability to continue participating in these investments with ~~the Merger.~~

WGL expects to incur significant costs associated with the Merger for financial advisory services, legal services, revaluation of share-based compensation and acceleration of executive compensation. Some of these costs will be incurred even if the Merger is not completed.

~~WGL’s business will be subject to uncertainties while the Merger is pending.~~

~~Uncertainty about~~counterparties depends in part on the effect of the ~~Merger~~Tax Act on employees, suppliers and customers may have an adverse effect on WGL. Although WGL intends to take steps to reduce any adverse effects, these uncertainties may impair WGL’s abilities to attract, retain and motivate employees until the ~~Merger is completed and~~market demand for ~~a period of time thereafter.~~

~~Potential future actions against WGL and its directors and officers challenging the Merger may prevent the Merger from being completed within the anticipated time frame.~~such investments.

WGL ~~and/~~Energy Systems’ inability to find counterparties for tax equity partnerships could negatively impact its results.

WGL Energy Systems has derived a significant portion of its revenues from alternative energy investments, including investments in tax equity partnerships. The Tax Act reduces the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%. WGL anticipates that this reduction in the corporate tax rate may have a negative impact on its ability to continue to engage counterparties in these transactions as such counterparties’ appetite for the tax benefits of such partnerships will decrease with the lower overall corporate tax rate. In addition, a base erosion anti-abuse tax, enacted as part of the Tax Act, may decrease the appetite for tax credits by counterparties who engage in business with foreign affiliates. Should WGL be unable to find sufficient or suitable counterparties for these partnerships going forward for any reason, including due to the enactment of the Tax Act, thus limiting its ~~directors~~ability to enter into these transactions, WGL’s results of operations, cash flows and ~~officers~~financial condition may ~~potentially~~ be named as defendants in class action lawsuits filed on behalf of public shareholders challenging the Merger and potentially seeking to enjoin the defendants from consummating the Merger on the agreed-upon terms.negatively impacted.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

WGL Holdings, Inc.

Washington Gas Light Company

Part II—Other Information

ITEM 6. EXHIBITS

Exhibits:



Schedule/ Exhibit		Description
(a)(3)		Exhibits

		Exhibits Incorporated by Reference:

~~2.1~~ 4.1		~~Agreement and Plan of Merger,~~Indenture, dated ~~as of January 25, 2017, among WGL Holdings, Inc., Wrangler Inc. and AltaGas, Ltd. (Exhibit No. 2.1 to WGL Holdings, Inc. Current Report on Form 8-K filed January 27, 2017)~~

~~2.2~~		~~Subscription Agreement for Series A Non-Voting Non-Convertible Perpetual Preferred Stock, dated as of January 25,~~November 29, 2017, by and between WGL Holdings, Inc. and ~~AltaGas Ltd. (Exhibit No. 2.2~~The Bank of New York Mellon, as Trustee (incorporated by reference to Exhibit 4.1 to WGL Holdings, Inc. ~~Current Report on~~’s Form 8-K filed ~~January 27,~~December 1, 2017).

4.2		First Supplemental Indenture, dated November 29, 2017, by and between WGL Holdings, Inc. and The Bank of New York Mellon, as Trustee (incorporated by reference to Exhibit 4.2 to WGL Holdings, Inc.’s Form 8-K filed December 1, 2017).

4.3		Form of Floating Rate Note due 2019 (incorporated by reference to Exhibit 4.3 to WGL Holdings, Inc.’s Form 8-K filed December 1, 2017).

		Exhibits Filed Herewith:

2.1		Letter Agreement, dated January 11, 2018, by and between WGL Holdings, Inc. and AltaGas Ltd.

18.1		Preferability Letter Regarding Change in Accounting Principles for WGL Holdings, Inc.

18.2		Preferability Letter Regarding Change in Accounting Principles for Washington Gas

31.1		Certification of Terry D. McCallister, the Chairman and Chief Executive Officer of WGL Holdings, Inc., pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2		Certification of Vincent L. Ammann, Jr., the Senior Vice President and Chief Financial Officer of WGL Holdings, Inc., pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.3		Certification of Terry D. McCallister, the Chairman and Chief Executive Officer of Washington Gas Light Company, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.4		Certification of Vincent L. Ammann, Jr., the Senior Vice President and Chief Financial Officer of Washington Gas Light Company, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32		Certification of Terry D. McCallister, the Chairman and Chief Executive Officer of the Registrants, and Vincent L. Ammann, Jr., the Senior Vice President and Chief Financial Officer of the Registrants, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS		XBRL Instance Document

101.SCH		XBRL Schema Document

101.CAL		XBRL Calculation Linkbase Document

101.LAB		XBRL Labels Linkbase Document

101.PRE		XBRL Presentation Linkbase Document

101.DEF		XBRL Definition Linkbase Document

WGL Holdings, Inc.

Washington Gas Light Company

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized.



	WGL HOLDINGS, INC. and WASHINGTON GAS LIGHT COMPANY (Co-registrants)

Date: February ~~8, 2017~~7, 2018	/s/ William R. Ford
	William R. Ford
	Vice President and Chief Accounting Officer ~~(Principal~~(signing on behalf of the Registrants and as Principal Accounting ~~Officer)~~Officer of each of the Registrants)

7684



WGL Holdings, Inc. Balance Sheet Classification of Derivative Instruments
(In millions)	Derivative Instruments Not Designated as Hedging Instruments					Derivative Instruments Designated as Hedging Instruments
As of December 31, 2016	Gross Derivative Assets		Gross Derivative Liabilities			Gross Derivative Assets		Gross Derivative Liabilities			Netting of Collateral			Total^(a)
Current Assets—Derivatives	$	30.5	$	(9.7	)	$	—	$	—		$	(0.1	)	$	20.7
Deferred Charges and Other Assets—Derivatives	40.9		(0.6		)	11.9		(5.5		)	—			46.7
Current Liabilities—Derivatives	10.9		(85.9		)	—		—			8.2			(66.8		)
Deferred Credits—Derivatives	1.3		(230.7		)	—		—			5.4			(224.0		)
Total	$	83.6	$	(326.9	)	$	11.9	$	(5.5	)	$	13.5		$	(223.4	)
As of September 30, 2016
Current Assets—Derivatives	$	24.0	$	(5.5	)	$	—	$	—		$	—		$	18.5
Deferred Charges and Other Assets—Derivatives	55.6		(0.6		)	—		—			—			55.0
Current Liabilities—Derivatives	18.3		(113.2		)	—		—			12.6			(82.3		)
Deferred Credits—Derivatives	6.4		(279.3		)	0.2		(43.1		)	11.6			(304.2		)
Total	$	104.3	$	(398.6	)	$	0.2	$	(43.1	)	$	24.2		$	(313.0	)



Operating Segment Financial Information
(In thousands)	Operating Revenues^(a)			Depreciation and Amortization			Equity in Earnings of Unconsolidated Affiliates			EBIT			Total Assets			Capital Expenditures		Equity Method Investments
Three Months Ended December 31, 2016
Regulated utility	$	333,986		$	30,560		$	—		$	102,717		$	4,891,722		$	111,681	$	—
Retail energy-marketing	298,684			305			—			29,185			518,914			404		—
Commercial energy systems^(b)	14,857			4,399			2,387			4,663			932,908			43,673		68,573
Midstream energy services	(24,988		)	9			(2,122		)	(28,484		)	607,806			—		305,492
Other activities	—			—			—			(1,198		)	417,672			—		—
Eliminations^(c)	(13,052		)	10			—			1,108			(893,632		)	—		—
Total consolidated	$	609,487		$	35,283		$	265		$	107,991		$	6,475,390		$	155,758	$	374,065
Three Months Ended December 31, 2015
Regulated utility	$	295,246		$	27,595		$	—		$	99,289		$	4,396,009		$	83,561	$	—
Retail energy-marketing	289,395			306			—			(567		)	470,214			430		—
Commercial energy systems	15,622			3,481			394			943			723,401			17,022		62,618
Midstream energy services	21,210			35			869			20,839			258,013			—		82,565
Other activities	—			—			—			(780		)	271,329			—		—
Eliminations^(c)	(8,089		)	(5		)	—			27			(625,814		)	—		—
Total consolidated	$	613,384		$	31,412		$	1,263		$	119,751		$	5,493,152		$	101,013	$	145,183



	Projected
(In millions)	2017		2018		2019		2020		2021		Total
New business^(a)	$	130.9	$	148.9	$	153.8	$	166.6	$	189.5	$	789.7
Replacements:
Regulatory plans^(b)	130.7		139.0		149.8		167.1		173.1		759.7
Other^(c)	58.3		53.7		54.1		55.7		57.3		279.1
Customer information system	23.0		—		—		—		—		23.0
Other utility	49.6		74.1		53.4		57.5		71.3		305.9
Total utility^(d)	392.5		415.7		411.1		446.9		491.2		2,157.4
Pipeline investments	120.1		553.4		57.7		1.2		—		732.4
Distributed generation	100.1		100.1		100.1		100.1		100.1		500.5
Other non-utility	1.5		0.2		0.1		0.1		0.1		2.0
Total investments	$	614.2	$	1,069.4	$	569.0	$	548.3	$	591.4	$	3,392.3

ASU ~~2015-05, Intangibles-Goodwill~~2016-06, Derivatives and ~~Other -Internal-Use Software (Subtopic 350-40)-Customer’s Accounting for Fees Paid~~Hedging (Topic 815) - Contingent Put and Call Options in ~~a Cloud Computing Arrangement~~
Debt Instruments

The ~~standard clarifies~~amendments in this update clarify the requirements for assessing whether contingent call (put) options that ~~a cloud computing customer may account~~can accelerate the payment of principal on debt
instruments are clearly and closely related to their debt hosts. The guidance states that for contingent call (put) options to be considered clearly and closely related, they can be indexed only to interest rates or credit risk. An entity is required to assess the ~~arrangement as a software license when (1)~~embedded call (put) options solely in accordance with the customer has a contractual right to take possession of the software at any time during the hosting period without significant penalty, and (2) it is feasible for the customer to either operate the software on its own hardware or contract with another party unrelated to the vendor to host the software. If the arrangement does not meet these criteria, it would be accounted for as a service contract and accounted for as an operating expense in the period incurred.

four-step decision sequence.

October 1, ~~2016~~2017

The implementation of this standard did not have an effect on WGL ~~elected~~or Washington Gas' financial statements.

ASU 2015-11, Inventory (Topic 330) - Simplifying the Measurement of Inventory

This standard reduces the complexity in the current measurement of inventory. This ASU requires inventory to ~~apply~~be measured at the lower of cost and net realizable value, where net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation (no change to the definition of net realizable value). The amendment eliminates the guidance that requires inventory to be stated at the lower-of-cost or market, which includes consideration of the replacement cost of inventory and the net realizable value of inventory, less an approximately normal profit margin.

October 1, 2017

The implementation of this standard ~~on a prospective basis, which~~ did not have a material ~~impact~~effect on ~~the~~WGL or Washington Gas' financial statements.