Clearway Energy (CWEN.A) 10-K 29 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Jan. 31, 2016	Jun. 30, 2015
Class of Stock [Line Items]
Entity Registrant Name	NRG Yield LLC
Entity Central Index Key	1,637,757
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2,015
Entity Public Float			$ 0
Document Fiscal Period Focus	FY
Common Class A [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		34,586,250
Common Class B [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		42,738,750
Common Class C [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		62,784,250
Common Class D [Member]
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		42,738,750

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended															12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	[2]	Jun. 30, 2015	[2]	Mar. 31, 2015	[2]	Dec. 31, 2014	[3]	Sep. 30, 2014	[3]	Jun. 30, 2014	[3]	Mar. 31, 2014	[3]	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Income Tax Expense (Benefit)																$ 0	$ 0	[1]	$ (3)	[1]
Operating Revenues
Total operating revenues	$ 209	$ 225		$ 235		$ 200		$ 212		$ 199		$ 194		$ 141		869	746	[1]	387	[1]
Operating Costs and Expenses [Abstract]
Cost of operations																312	266	[1]	148	[1]
Depreciation and amortization																265	202	[1],[4]	74	[1],[4]
General and administrative																10	8	[1]	7	[1]
Acquisition-related transaction and integration costs																3	4	[1]	0	[1]
Total operating costs and expenses																590	480	[1]	229	[1]
Operating Income	67	81		85		46		70		85		60		51		279	266	[1]	158	[1]
Costs and Expenses [Abstract]
Equity in earnings of unconsolidated affiliates																35	25	[1]	22	[1]
Other income, net																2	3	[1]	3	[1]
Loss on debt extinguishment																(9)	0	[1],[4]	0	[1],[4]
Interest expense																(229)	(186)	[1]	(52)	[1]
Total other income (expense), net																(201)	(158)	[1]	(27)	[1]
Income Before Income Taxes																	108	[1]	131
Net Income	$ 21	$ 36		$ 44		$ (23)		$ (6)		$ 48		$ 39		$ 27		78	108	[1],[5],[6]	134	[1],[4],[5],[6]
Net Income (Loss) Attributable to Noncontrolling Interest																(51)	3	[1]	(2)	[1]
Net Income (Loss) Attributable to NRG Yield LLC																129	105	[1]	136	[1]
Noncontrolling Interest [Member]
Costs and Expenses [Abstract]
Net Income (Loss) Attributable to Noncontrolling Interest																$ (51)	$ 3	[6]	$ (2)	[5],[6]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2015

Sep. 30, 2015

[1]

Jun. 30, 2015

[1]

Mar. 31, 2015

[1]

Dec. 31, 2014

[2]

Sep. 30, 2014

[2]

Jun. 30, 2014

[2]

Mar. 31, 2014

[2]

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Net Income

$ 21

$ 36

$ 44

$ (23)

$ (6)

$ 48

$ 39

$ 27

$ 78

$ 108

[3],[4],[5]

$ 134

[3],[4],[5],[6]

Other Comprehensive Loss, net of tax

Unrealized (loss) gain on derivatives

(18)

(66)

[4]

47

[4]

Other comprehensive (loss) income

(18)

(66)

[4]

47

[4]

Comprehensive Income

60

42

[4]

181

[4]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

52

(1)

2

Net Income (Loss) Attributable to Noncontrolling Interest

(51)

3

[3]

(2)

[3]

Comprehensive Income Attributable to NRG Yield LLC

112

41

[4]

183

[4]

Noncontrolling Interest [Member]

Other Comprehensive Loss, net of tax

Net Income (Loss) Attributable to Noncontrolling Interest

$ (51)

$ 3

[5]

$ (2)

[4],[5]

[1]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[2]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[3]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[4]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[5]

(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.

[6]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 110	$ 429	[1],[2]
Restricted cash	48	47	[2]
Accounts receivable — trade	95	90	[2]
Accounts receivable — affiliate	4	28	[2]
Inventory	35	32	[2]
Derivative instruments — affiliate	0	2	[2]
Notes receivable	7	6	[2]
Prepayments and other current assets	22	22	[2]
Total current assets	321	656	[2]
Property, plant and equipment
In service	5,748	5,604	[2]
Under construction	9	9	[2]
Total property, plant and equipment	5,757	5,613	[2]
Less accumulated depreciation	(701)	(438)	[2]
Net property, plant and equipment	5,056	5,175	[2]
Other Assets
Equity investments in affiliates	798	410	[2]
Notes receivable	10	15	[2]
Intangible assets, net of accumulated amortization of $93 and $38	1,362	1,424	[2]
Derivative instruments	0	2	[2]
Other non-current assets	61	45	[2]
Total other assets	2,231	1,896	[2]
Total Assets	7,608	7,727	[2]
Current Liabilities
Current portion of long-term debt — external	241	224	[3]
Accounts payable — trade	23	22	[3]
Accounts payable — affiliate	85	45	[3]
Derivative instruments	39	52	[3]
Accrued expenses and other current liabilities	67	65	[3]
Total current liabilities	455	408	[3]
Other Liabilities
Long-term debt — external	3,976	4,377	[3]
Long-term debt — affiliate	618	337	[3]
Derivative instruments	61	77	[3]
Other non-current liabilities	64	52	[3]
Total non-current liabilities	4,719	4,843	[3]
Total Liabilities	5,174	5,251	[3]
Members' Equity
Contributed capital	1,963	2,104	[3]
Retained earnings	93	103	[3]
Accumulated other comprehensive loss	(82)	(65)	[3]
Stockholders' Equity Attributable to Noncontrolling Interest	460	334	[3]
Total Members' Equity	2,434	2,476	[3]
Total Liabilities and Members’ Equity	$ 7,608	$ 7,727	[3]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Intangible assets, accumulated amortization	$ 93	$ 38

Consolidated Statements Of Cas

Consolidated Statements Of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Interest Paid, Net		$ (251)		$ (180)	[1]	$ (63)	[1]
Cash Flows from Operating Activities
Net Income (Loss)		78		108	[2],[3],[4]	134	[1],[2],[3],[4]
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Distributions in excess of equity in earnings of unconsolidated affiliates		29		5	[1]	(6)	[1]
Depreciation and amortization		265		202	[1],[2]	74	[1],[2]
Amortization of financing costs and debt discount/premiums		7		5	[1]	4	[1]
Amortization of Intangibles and Out of Market Contracts		54		28	[1]	1	[1]
Adjustment for debt extinguishment		9		0	[1],[2]	0	[1],[2]
Increase (Decrease) in Income Taxes		0		0	[1]	(3)	[1]
Changes in derivative instruments		(45)		(14)	[1]	(21)	[1]
Changes in other working capital		(25)		(24)	[1]	(63)	[1]
Net Cash Provided by Operating Activities		372		310	[1]	120	[1]
Cash Flows from Investing Activities
Acquisition of businesses, net of cash acquired		(37)		(901)	[1]	(120)
Payments to Acquire Businesses, Net of Cash Acquired	[1]					120
Acquisition of Assets Under Common Control		(698)		(311)	[1]	0	[1]
Capital expenditures		(29)		(33)	[1]	(353)	[1]
(Increase) decrease in restricted cash		(1)		49	[1]	(43)	[1]
Decrease in notes receivable		7		8	[1]	10
Payments for (Proceeds from) Loans Receivable	[1]					(10)
Proceeds from Renewable Energy Grants		0		137	[1]	25	[1]
Net investments in unconsolidated affiliates		(360)		7	[1]	(34)	[1]
Other		0		11	[1]	0	[1]
Net Cash Used in Investing Activities		(1,118)		(1,033)	[1]	(515)	[1]
Cash Flows from Financing Activities
Proceeds from Noncontrolling Interests		122		190	[1]	0	[1]
Capital contributions from NRG		0		2	[1]	171	[1]
Distributions and return of capital to NRG		(38)		(290)	[1]	(707)	[1]
Proceeds from the issuance of Class C and Class A units		599		630	[1]	468	[1]
Payment of distributions		(139)		(101)	[1]	(15)	[1]
Proceeds from issuance of long-term debt — external		557		630	[1]	594	[1]
Proceeds from issuance of long-term debt — affiliate		281		337	[1]	0	[1]
Payment of debt issuance costs		(7)		(28)	[1]	(5)	[1]
Payments for long-term debt — external		(948)		(277)	[1]	(72)	[1]
Proceeds from (Repayments of) Related Party Debt		0		0	[1]	(2)	[1]
Net Cash Provided by Financing Activities		427		1,093	[1]	432	[1]
Net (Decrease) Increase in Cash and Cash Equivalents		(319)		370	[1]	37	[1]
Cash and Cash Equivalents at Beginning of Period	[1]	429	[5]	59		22
Cash and Cash Equivalents at End of Period		110		429	[1],[5]	59	[1]
Additions (reductions) to fixed assets for accrued capital expenditures		1		(21)	[1]	1	[1]
Decrease in Fixed Assets, Accrued Grants		0		0	[1]	207	[1]
Proceeds from Contributions from Affiliates						75
Decrease in Fixed Assets, Deferred Tax Asset		0		0	[1]	(12)	[1]
Non-cash [Member]
Cash Flows from Financing Activities
Distributions and return of capital to NRG	[1]			$ (1,021)		$ (76)
Payment of capital distributions and returns of capital, net of capital contributions		$ (22)
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Consolidated Statements of Memb

Consolidated Statements of Members' Equity Statement - USD ($) $ in Millions		Total		Retained Earnings, Unappropriated [Member]	Other Additional Capital [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]		Additional Paid-in Capital [Member]	NRG Yield [Member]	NRG Yield [Member]Retained Earnings, Unappropriated [Member]	NRG Yield [Member]AOCI Attributable to Parent [Member]	NRG Yield [Member]Noncontrolling Interest [Member]	NRG Yield [Member]Additional Paid-in Capital [Member]	NRG [Member]	NRG [Member]Retained Earnings, Unappropriated [Member]	NRG [Member]AOCI Attributable to Parent [Member]		NRG [Member]Noncontrolling Interest [Member]	NRG [Member]Additional Paid-in Capital [Member]		NRG Yield, Inc. [Member]	NRG Yield, Inc. [Member]Retained Earnings, Unappropriated [Member]	NRG Yield, Inc. [Member]AOCI Attributable to Parent [Member]	NRG Yield, Inc. [Member]Noncontrolling Interest [Member]	NRG Yield, Inc. [Member]Additional Paid-in Capital [Member]	January 2015 Drop Down Assets [Member]	January 2015 Drop Down Assets [Member]Additional Paid-in Capital [Member]	November 2015 Drop Down Assets [Member]	November 2015 Drop Down Assets [Member]Additional Paid-in Capital [Member]	Alta X and XI TE Holdco [Member]Financial Institutions [Member]	Alta X and XI TE Holdco [Member]Financial Institutions [Member]Retained Earnings, Unappropriated [Member]	Alta X and XI TE Holdco [Member]Financial Institutions [Member]AOCI Attributable to Parent [Member]	Alta X and XI TE Holdco [Member]Financial Institutions [Member]Noncontrolling Interest [Member]	Alta X and XI TE Holdco [Member]Financial Institutions [Member]Additional Paid-in Capital [Member]	Spring Canyon [Member]Financial Institutions [Member]	Spring Canyon [Member]Financial Institutions [Member]Retained Earnings, Unappropriated [Member]	Spring Canyon [Member]Financial Institutions [Member]AOCI Attributable to Parent [Member]	Spring Canyon [Member]Financial Institutions [Member]Noncontrolling Interest [Member]	Spring Canyon [Member]Financial Institutions [Member]Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | Scenario, Previously Reported [Member]	[1]	$ 1,002		$ 28	$ 1,022	$ (48)	$ 0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,242		(16)	1,246	(48)	60
Net Income (Loss) Attributable to Parent	[2]	136
Proceeds from Noncontrolling Interests	[3]	0
Proceeds from the issuance of Class C and Class A units		468	[3]	0		0	0		$ 468
Payments of Ordinary Dividends, Common Stock										$ (5)	$ (5)	$ 0	$ 0	$ 0	$ (10)	$ (10)	$ 0		$ 0	$ 0
Payments of Capital Distribution | Non-cash [Member]	[3]	76
Payments of Capital Distribution	[3]	707
Net Income (Loss) Available to Common Stockholders, Basic	[4]			136	0	0
Net Income (Loss) Attributable to Noncontrolling Interest		(2)	[2]				(2)	[4],[5]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | Scenario, Previously Reported [Member]		143
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		134	[2],[3],[4],[5]																										$ (9)
Unrealized Gain (Loss) on Derivatives		47		0	0	47	0
Partners' Capital Account, Return of Capital | Non-cash [Member]		(76)		1	75	0	0
Partners' Capital Account, Return of Capital		(536)		0	536	0	0
Acquisition of Assets Under Common Control	[3]	0
Proceeds from Contributions from Affiliates | Non-cash [Member]				(5)		0	0		80
Proceeds from Contributions from Affiliates		75
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,339		99	1,183	(1)	58
Allocation of Predecessor's equity	[6]	1,021		0		0	136		885
Net Income (Loss) Attributable to Parent	[2]	105
Proceeds from Noncontrolling Interests		190	[3]																												$ 190			$ 190
Proceeds from the issuance of Class C and Class A units		630	[3]	0		0	0		630
Payments of Ordinary Dividends, Common Stock		(288)	[4]							$ (41)	$ (41)	$ 0	$ 0	$ 0	(60)	(60)	0	[4]	0	(237)	[4]
Payments of Capital Distribution | Non-cash [Member]	[3]	1,021
Payments of Capital Distribution	[3]	290
Net Income (Loss) Available to Common Stockholders, Basic	[4]			105		0			0
Net Income (Loss) Attributable to Noncontrolling Interest		3	[2]				3	[4]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | Scenario, Previously Reported [Member]		121
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		108	[2],[4],[5]																										(13)
Unrealized Gain (Loss) on Derivatives	[4]	(66)		0		(64)	(2)		0
Partners' Capital Account, Return of Capital	[4]						51
Net Assets Acquired, Drop Down Assets		(357)		0		0	0		(357)
Acquisition of Assets Under Common Control	[3]	(311)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		2,476		103	2,104	(65)	334
Net Income (Loss) Attributable to Parent		129		129		0			0
Proceeds from Noncontrolling Interests		122																													$ 122	$ 0	$ 0	$ 122	$ 0
Noncontrolling Interest, Increase from Business Combination																																				$ 74	$ 0	$ 0	$ 74	$ 0
Proceeds from the issuance of Class C and Class A units		599		0		0	0		599
Payments of Ordinary Dividends, Common Stock															$ (70)	$ (70)	$ 0		0	0		$ (69)	$ (69)	$ 0	$ 0	$ 0
Dividends, Common Stock, Cash																			$ 10	$ 28
Payments of Capital Distribution		38
Net Income (Loss) Attributable to Noncontrolling Interest		(51)					(51)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		78
Unrealized Gain (Loss) on Derivatives		(18)		0		(17)	(1)		$ 0
Partners' Capital Account, Return of Capital | Non-cash [Member]					14		8
Partners' Capital Account, Return of Capital					22
Net Assets Acquired, Drop Down Assets				0		0	0
Acquisition of Assets Under Common Control		(698)																									$ (489)	$ (489)	$ (209)	$ (209)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 2,434		$ 93	$ 1,963	$ (82)	$ 460
[1]	(a) As previously reported in the Company's audited financial statements for the year ended December 31, 2014, included in the Company's Prospectus dated June 22, 2015.
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[4]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	b) Capital contributions from NRG, non-cash, primarily represent Drop Down Assets' equity transferred from NRG to the Company in accordance with guidance on business combinations between entities under common control, as further described in Note 1, Nature of Business.

Nature of Business

Nature of Business	12 Months Ended
	Dec. 31, 2015
Nature of Business Disclosure [Abstract]
Business Description and Basis of Presentation [Text Block]	NRG Yield LLC, together with its consolidated subsidiaries, or the Company, was formed by NRG as a Delaware limited liability company on March 5, 2013, to serve as the primary vehicle through which NRG owns, operates and acquires contracted renewable and conventional generation and thermal infrastructure assets. NRG owns 100% of the Company's Class B units and Class D units and receives distributions through its ownership of these units. NRG Yield, Inc., or Yield, Inc., owns 100% of the Company's Class A units and Class C units. NRG Yield LLC, through its wholly owned subsidiary, NRG Yield Operating LLC, or Yield Operating LLC, holds a portfolio of renewable and conventional generation and thermal infrastructure assets, primarily located in the Northeast, Southwest and California regions of the U.S. On July 22, 2013, Yield, Inc., issued 22,511,250 shares of Class A common stock in an initial public offering. Yield, Inc. utilized the net proceeds of the initial public offering to acquire 19,011,250 of the Company's Class A units from NRG in return for $395 million , and 3,500,000 Class A units directly from the Company in return for $73 million , including a controlling interest through its position as sole managing member. On July 29, 2014, Yield, Inc. issued 12,075,000 shares of Class A common stock for net proceeds, after underwriting discount and expenses, of $630 million . Yield, Inc. utilized the proceeds of the offering to acquire an additional 12,075,000 of the Company's Class A units. Effective May 14, 2015, Yield, Inc. amended its certificate of incorporation to create two new classes of capital stock, Class C common stock and Class D common stock, and distributed shares of the Class C common stock and Class D common stock to holders of Yield, Inc.'s outstanding Class A common stock and Class B common stock, respectively, through a stock split. The stock split is referred to as the Recapitalization. The Company also amended its operating agreement to reflect the Recapitalization. Effective May 14, 2015, each Class A unit of the Company was automatically reclassified into one Class A unit and one Class C unit and each Class B unit of the Company was automatically reclassified into one Class B unit and one Class D unit. On June 29, 2015, Yield, Inc. issued 28,198,000 shares of Class C common stock for net proceeds of $599 million . Yield, Inc. utilized the proceeds of the offering to acquire 28,198,000 Class C units of NRG Yield LLC, increasing its economic interest to 53.3% . Yield, Inc. consolidates the results of the Company through its controlling interest as sole managing member. The following table represents the structure of the Company as of December 31, 2015 : For the periods prior to the initial public offering of Yield, Inc., the accompanying combined financial statements represent the combination of the assets that the Company acquired and were prepared using NRG's historical basis in the assets and liabilities. For the purposes of the combined financial statements, the term "NRG Yield" represents the accounting predecessor, or the combination of the acquired businesses. For all periods subsequent to the Yield, Inc. initial public offering, the accompanying audited consolidated financial statements represent the consolidated results of the Company. As of December 31, 2015 , the Company's operating assets are comprised of the following projects: Projects Percentage Ownership Net Capacity (MW) (a) Offtake Counterparty Expiration Conventional El Segundo 100 % 550 Southern California Edison 2023 GenConn Devon (b) 50 % 95 Connecticut Light & Power 2040 GenConn Middletown (b) 50 % 95 Connecticut Light & Power 2041 Marsh Landing 100 % 720 Pacific Gas and Electric 2023 Walnut Creek 100 % 485 Southern California Edison 2023 1,945 Utility Scale Solar Alpine 100 % 66 Pacific Gas and Electric 2033 Avenal (b) 50 % 23 Pacific Gas and Electric 2031 Avra Valley 100 % 26 Tucson Electric Power 2032 Blythe 100 % 21 Southern California Edison 2029 Borrego 100 % 26 San Diego Gas and Electric 2038 CVSR 48.95 % 122 Pacific Gas and Electric 2038 Desert Sunlight 250 25 % 63 Southern California Edison 2035 Desert Sunlight 300 25 % 75 Pacific Gas and Electric 2040 Kansas South 100 % 20 Pacific Gas and Electric 2033 Roadrunner 100 % 20 El Paso Electric 2031 TA High Desert 100 % 20 Southern California Edison 2033 482 Distributed Solar AZ DG Solar Projects 100 % 5 Various 2025 - 2033 PFMG DG Solar Projects 51 % 4 Various 2032 9 Wind Alta I 100 % 150 Southern California Edison 2035 Alta II 100 % 150 Southern California Edison 2035 Alta III 100 % 150 Southern California Edison 2035 Alta IV 100 % 102 Southern California Edison 2035 Alta V 100 % 168 Southern California Edison 2035 Alta X (c)(d) 100 % 137 Southern California Edison 2038 Alta XI (c)(d) 100 % 90 Southern California Edison 2038 Buffalo Bear 100 % 19 Western Farmers Electric Co-operative 2033 Crosswinds 74.3 % 16 Corn Belt Power Cooperative 2027 Elbow Creek 75 % 92 NRG Power Marketing LLC 2022 Elkhorn Ridge 50.3 % 41 Nebraska Public Power District 2029 Forward 75 % 22 Constellation NewEnergy, Inc. 2017 Goat Wind 74.9 % 113 Dow Pipeline Company 2025 Hardin 74.3 % 11 Interstate Power and Light Company 2027 Laredo Ridge 100 % 80 Nebraska Public Power District 2031 Lookout 75 % 29 Southern Maryland Electric Cooperative 2030 Odin 74.9 % 15 Missouri River Energy Services 2028 Projects Percentage Ownership Net Capacity (MW) (a) Offtake Counterparty Expiration Pinnacle 100 % 55 Maryland Department of General Services and University System of Maryland 2031 San Juan Mesa 56.3 % 68 Southwestern Public Service Company 2025 Sleeping Bear 75 % 71 Public Service Company of Oklahoma 2032 South Trent 100 % 101 AEP Energy Partners 2029 Spanish Fork 75 % 14 PacifiCorp 2028 Spring Canyon II (c) 90.1 % 29 Platte River Power Authority 2039 Spring Canyon III (c) 90.1 % 25 Platte River Power Authority 2039 Taloga 100 % 130 Oklahoma Gas & Electric 2031 Wildorado 74.9 % 121 Southwestern Public Service Company 2027 1,999 Thermal Thermal equivalent MWt (e) 100 % 1,315 Various Various Thermal generation 100 % 124 Various Various Total net capacity (excluding equivalent MWt) (f) 4,559 (a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015 . (b) On September 30, 2015, the Company acquired NRG's remaining 0.05% for an immaterial amount. (c) Projects are part of tax equity arrangements, as further described in Note 2 , Summary of Significant Accounting Policies and Note 5 , Investments Accounted for by the Equity Method and Variable Interest Entities . (d) PPA began on January 1, 2016. (e) For thermal energy, net capacity represents MWt for steam or chilled water and excludes 134 MWt available under the right-to-use provisions contained in agreements between two of the Company's thermal facilities and certain of its customers. (f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5 , Investments Accounted for by the Equity Method and Variable Interest Entities . Substantially all of the Company's generation assets are under long-term contractual arrangements for the output or capacity from these assets. The thermal assets are comprised of district energy systems and combined heat and power plants that produce steam, hot water and/or chilled water and, in some instances, electricity at a central plant. Three of the district energy systems are subject to rate regulation by state public utility commissions while the other district energy systems have rates determined by negotiated bilateral contracts. The historical combined financial statements include allocations of certain NRG corporate expenses. Management believes the assumptions and methodology underlying the allocation of general corporate overhead expenses are reasonable. The allocated costs include legal, accounting, tax, treasury, information technology, insurance, employee benefit costs, and other corporate costs. However, such expenses may not be indicative of the actual level of expense that would have been incurred if the Company had operated as an independent company during the period prior to the Yield, Inc. initial public offering or of the costs expected to be incurred in the future. Allocations of NRG corporate expenses were $3 million for the period from January 1, 2013, through July 22, 2013. In connection with the Yield, Inc. initial public offering, the Company, Yield Operating and Yield, Inc. entered into a management services agreement with NRG for various services, including human resources, accounting, tax, legal, information systems, treasury, and risk management. Costs incurred by the Company under this agreement were $3 million for the period from July 23, 2013, through December 31, 2013, $6 million for the year ended December 31, 2014 and $8 million for the year ended December 31, 2015 , which included certain direct expenses incurred by NRG on behalf of the Company. For the period prior to the Yield, Inc. initial public offering, members' equity represents the combined equity of the Company's subsidiaries, including adjustments necessary to present the Company's financial statements as if the Company were in existence as of the beginning of the periods presented. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 , as follows: • On November 3, 2015, the Company acquired 75% of the Class B interests of NRG Wind TE Holdco, or the November 2015 Drop Down Assets, for total cash consideration of $209 million . In February 2016, NRG made a final working capital payment of $2 million , reducing total cash consideration to $207 million . The Company is responsible for its pro-rata share of non-recourse project debt of $ 193 million and noncontrolling interest associated with a tax equity structure of $159 million (as of the acquisition date). • On January 2, 2015, the Company acquired the Laredo Ridge, Tapestry, and Walnut Creek projects, or the January 2015 Drop Down Assets, for total cash consideration of $489 million , plus assumed project-level debt of $737 million . • On June 30, 2014, the Company acquired the TA High Desert, Kansas South, and El Segundo projects from NRG for total cash consideration of $357 million plus assumed project level debt of $612 million . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its consolidated financial statements and the notes to the consolidated financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The Company's consolidated and combined financial statements have been prepared in accordance with U.S. GAAP. The FASB ASC is the source of authoritative U.S. GAAP to be applied by nongovernmental entities. In addition, the rules and interpretative releases of the SEC under authority of federal securities laws are also sources of authoritative U.S. GAAP for SEC registrants. The consolidated and combined financial statements include the Company's accounts and operations and those of its subsidiaries in which it has a controlling interest. All significant intercompany transactions and balances have been eliminated in consolidation. The usual condition for a controlling financial interest is ownership of a majority of the voting interests of an entity. However, a controlling financial interest may also exist through arrangements that do not involve controlling voting interests. As such, the Company applies the guidance of ASC 810, Consolidations, or ASC 810, to determine when an entity that is insufficiently capitalized or not controlled through its voting interests, referred to as a variable interest entity, or VIE, should be consolidated. Cash and Cash Equivalents Cash and cash equivalents include highly liquid investments with an original maturity of three months or less at the time of purchase. Cash and cash equivalents held at project subsidiaries was $93 million and $74 million as of December 31, 2015 , and 2014 , respectively. Restricted Cash Restricted cash consists primarily of funds held to satisfy the requirements of certain debt agreements and funds held within the Company's projects that are restricted in their use. Of these funds as of December 31, 2015, approximately $2 million is designated for current debt service payments, $7 million is designated to fund operating expenses and $2 million is designated for distributions to the Company, with the remaining $37 million restricted for reserves including debt service, performance obligations and other reserves as well as capital expenditures. Trade Receivables and Allowance for Doubtful Accounts Trade receivables are reported on the balance sheet at the invoiced amount adjusted for any write-offs and the allowance for doubtful accounts. The allowance for doubtful accounts is reviewed periodically based on amounts past due and significance. The allowance for doubtful accounts was immaterial as of December 31, 2015 , and 2014 . Inventory Inventory consists principally of spare parts and fuel oil and is valued at the weighted average cost, unless evidence indicates that the weighted average cost will be recovered with a normal profit in the ordinary course of business. The Company removes fuel inventories as they are used in the production of steam, chilled water or electricity. Spare parts inventory are removed when they are used for repairs, maintenance or capital projects. Property, Plant and Equipment Property, plant and equipment are stated at cost or, in the case of business acquisitions, fair value; however impairment adjustments are recorded whenever events or changes in circumstances indicate that their carrying values may not be recoverable. See Note 3 , Business Acquisitions , for more information on acquired property, plant and equipment. Significant additions or improvements extending asset lives are capitalized as incurred, while repairs and maintenance that do not improve or extend the life of the respective asset are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated useful lives. Certain assets and their related accumulated depreciation amounts are adjusted for asset retirements and disposals with the resulting gain or loss included in cost of operations in the consolidated statements of operations. Additionally, the Company reduces the book value of the property, plant and equipment of its eligible renewable energy projects for any cash grants that are submitted to the U.S. Treasury Department when the receivable is recorded for the net realizable amount. A non-cash dividend to parent for the deferred tax asset is recorded with a corresponding reduction to the book value of the property, plant and equipment. Asset Impairments Long-lived assets that are held and used are reviewed for impairment whenever events or changes in circumstances indicate carrying values may not be recoverable. Such reviews are performed in accordance with ASC 360. An impairment loss is recognized if the total future estimated undiscounted cash flows expected from an asset are less than its carrying value. An impairment charge is measured by the difference between an asset's carrying amount and fair value with the difference recorded in operating costs and expenses in the statements of operations. Fair values are determined by a variety of valuation methods, including appraisals, sales prices of similar assets and present value techniques. Investments accounted for by the equity method are reviewed for impairment in accordance with ASC 323, Investments-Equity Method and Joint Ventures , which requires that a loss in value of an investment that is other than a temporary decline should be recognized. The Company identifies and measures losses in the value of equity method investments based upon a comparison of fair value to carrying value. Capitalized Interest Interest incurred on funds borrowed to finance capital projects is capitalized, until the project under construction is ready for its intended use. The amount of interest capitalized for the year ended December 31, 2013 , was $18 million . The Company recorded less than $1 million of capitalized interest during the years ended December 31, 2015 , and 2014 . When a project is available for operations, capitalized interest is reclassified to property, plant and equipment and depreciated on a straight-line basis over the estimated useful life of the project's related assets. Debt Issuance Costs Debt issuance costs are capitalized and amortized as interest expense on a basis which approximates the effective interest method over the term of the related debt. As discussed below, as of December 31, 2015, the Company adopted ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , and reclassified debt issuance costs to be presented as a direct deduction from the carrying amount of the related debt in both the current and prior periods. Intangible Assets Intangible assets represent contractual rights held by the Company. The Company recognizes specifically identifiable intangible assets including customer contracts, customer relationships, power purchase agreements and development rights when specific rights and contracts are acquired. These intangible assets are amortized primarily on a straight-line basis. Notes Receivable Notes receivable consists of receivables related to the financing of required network upgrades. The notes issued with respect to network upgrades will be repaid within a 5 year period following the date each facility reaches commercial operations. Income Taxes Subsequent to the date the Yield Assets were acquired and the Yield, Inc. initial public offering occurred, the Company is a disregarded entity of a partnership for federal and state income tax purposes. Therefore, federal and state income taxes are assessed at the partner level. Accordingly, no provision has been made for federal or state income taxes in the accompanying financial statements. For all periods prior to the Yield, Inc. public offering, federal and state income taxes represent proforma income taxes. Revenue Recognition Thermal Revenues Steam and chilled water revenue is recognized based on customer usage as determined by meter readings taken at month-end. Some locations read customer meters throughout the month, and recognize estimated revenue for the period between meter read date and month-end. The Thermal Business subsidiaries collect and remit state and local taxes associated with sales to their customers, as required by governmental authorities. These taxes are presented on a net basis in the income statement. Power Purchase Agreements, or PPAs The majority of the Company’s revenues are obtained through PPAs or other contractual agreements. In order to determine lease classification as operating, the Company evaluates the terms of the PPA to determine if the lease includes any of the following provisions which would indicate capital lease treatment: • Transfers the ownership of the generating facility, • Bargain purchase option at the end of the term of the lease, • Lease term is greater than 75% of the economic life of the generating facility, or • Present value of minimum lease payments exceeds 90% of the fair value of the generating facility at inception of the lease In considering the above it was determined that all of Company’s PPAs are operating leases. ASC 840 requires the minimum lease payments received to be amortized over the term of the lease and contingent rentals are recorded when the achievement of the contingency becomes probable. Judgment is required by management in determining the economic life of each generating facility, in evaluating whether certain lease provisions constitute minimum payments or represent contingent rent and other factors in determining whether a contract contains a lease and whether the lease is an operating lease or capital lease. Certain of these leases have no minimum lease payments and all of the rental income under these leases is recorded as contingent rent on an actual basis when the electricity is delivered. The contingent rental income recognized in the years ended December 31, 2015 , 2014 and 2013 was $332 million , $212 million and $88 million , respectively. Derivative Financial Instruments The Company accounts for derivative financial instruments under ASC 815, Derivatives and Hedging , or ASC 815, which requires the Company to record all derivatives on the balance sheet at fair value unless they qualify for a NPNS exception. Changes in the fair value of non-hedge derivatives are immediately recognized in earnings. Changes in the fair value of derivatives accounted for as hedges, if elected for hedge accounting, are either: • Recognized in earnings as an offset to the changes in the fair value of the related hedged assets, liabilities and firm commitments; or • Deferred and recorded as a component of accumulated OCI until the hedged transactions occur and are recognized in earnings. The Company's primary derivative instruments are power sales contracts used to mitigate variability in earnings due to fluctuations in market prices, fuels purchase contracts used to control customer reimbursable fuel cost, and interest rate instruments used to mitigate variability in earnings due to fluctuations in interest rates. On an ongoing basis, the Company assesses the effectiveness of all derivatives that are designated as hedges for accounting purposes in order to determine that each derivative continues to be highly effective in offsetting changes in fair values or cash flows of hedged items. Internal analyses that measure the statistical correlation between the derivative and the associated hedged item determine the effectiveness of such a contract designated as a hedge. If it is determined that the derivative instrument is not highly effective as a hedge, hedge accounting will be discontinued prospectively. In this case, the gain or loss previously deferred in accumulated OCI would be frozen until the underlying hedged item is delivered unless the transaction being hedged is no longer probable of occurring in which case the amount in OCI would be immediately reclassified into earnings. If the derivative instrument is terminated, the effective portion of this derivative deferred in accumulated OCI will be frozen until the underlying hedged item is delivered. Revenues and expenses on contracts that qualify for the NPNS exception are recognized when the underlying physical transaction is delivered. While these contracts are considered derivative financial instruments under ASC 815, they are not recorded at fair value, but on an accrual basis of accounting. If it is determined that a transaction designated as NPNS no longer meets the scope exception, the fair value of the related contract is recorded on the balance sheet and immediately recognized through earnings. Concentrations of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of accounts receivable, notes receivable and derivative instruments, which are concentrated within entities engaged in the energy and financial industry. These industry concentrations may impact the overall exposure to credit risk, either positively or negatively, in that the customers may be similarly affected by changes in economic, industry or other conditions. In addition, many of the Company's projects have only one customer. However, the Company believes that the credit risk posed by industry concentration is offset by the diversification and creditworthiness of its customer base. See Note 6 , Fair Value of Financial Instruments , for a further discussion of derivative concentrations and Note 11 , Segment Reporting for concentration of counterparties. Fair Value of Financial Instruments The carrying amount of cash and cash equivalents, restricted cash, accounts receivable, accounts payable, intercompany accounts payable and receivable, and accrued expenses and other liabilities approximate fair value because of the short-term maturity of these instruments. See Note 6 , Fair Value of Financial Instruments , for a further discussion of fair value of financial instruments. Asset Retirement Obligations Asset retirement obligations, or AROs, are accounted for in accordance with ASC 410-20, Asset Retirement Obligations, or ASC 410-20. Retirement obligations associated with long-lived assets included within the scope of ASC 410-20 are those for which a legal obligation exists under enacted laws, statutes, and written or oral contracts, including obligations arising under the doctrine of promissory estoppel, and for which the timing and/or method of settlement may be conditional on a future event. ASC 410-20 requires an entity to recognize the fair value of a liability for an ARO in the period in which it is incurred and a reasonable estimate of fair value can be made. Upon initial recognition of a liability for an ARO, the asset retirement cost is capitalized by increasing the carrying amount of the related long-lived asset by the same amount. Over time, the liability is accreted to its future value, while the capitalized cost is depreciated over the useful life of the related asset. The Company's asset retirement obligations were $39 million and $29 million as of December 31, 2015 , and 2014 , respectively. The Company records AROs as part of other non-current liabilities on its balance sheet. Guarantees The Company enters into various contracts that include indemnification and guarantee provisions as a routine part of its business activities. Examples of these contracts include EPC agreements, operation and maintenance agreements, service agreements, commercial sales arrangements and other types of contractual agreements with vendors and other third parties, as well as affiliates. These contracts generally indemnify the counterparty for tax, environmental liability, litigation and other matters, as well as breaches of representations, warranties and covenants set forth in these agreements. Because many of the guarantees and indemnities the Company issues to third parties and affiliates do not limit the amount or duration of its obligations to perform under them, there exists a risk that the Company may have obligations in excess of the amounts agreed upon in the contracts mentioned above. For those guarantees and indemnities that do not limit the liability exposure, it may not be able to estimate what the liability would be, until a claim is made for payment or performance, due to the contingent nature of these contracts. Investments Accounted for by the Equity Method The Company has investments in nine energy projects accounted for by the equity method, three of which are VIEs, where the Company is not a primary beneficiary, and two of which are owned by a subsidiary that is consolidated as a VIE, as described in Note 5 , Investments Accounted for by the Equity Method and Variable Interest Entities . The equity method of accounting is applied to these investments in affiliates because the ownership structure prevents the Company from exercising a controlling influence over the operating and financial policies of the projects. Under this method, equity in pre-tax income or losses of the investments is reflected as equity in earnings of unconsolidated affiliates. Sale Leaseback Arrangements The Company is party to sale-leaseback arrangements that provide for the sale of certain assets to a third party and simultaneous leaseback to the Company. In accordance with ASC 840-40, Sale-Leaseback Transactions , if the seller-lessee retains, through the leaseback, substantially all of the benefits and risks incident to the ownership of the property sold, the sale-leaseback transaction is accounted for as a financing arrangement. An example of this type of continuing involvement would include an option to repurchase the assets or the buyer-lessor having the option to sell the assets back to the Company. This provision is included in most of the Company’s sale-leaseback arrangements. As such, the Company accounts for these arrangements as financings. Under the financing method, the Company does not recognize as income any of the sale proceeds received from the lessor that contractually constitutes payment to acquire the assets subject to these arrangements. Instead, the sale proceeds received are accounted for as financing obligations and leaseback payments made by the Company are allocated between interest expense and a reduction to the financing obligation. Interest on the financing obligation is calculated using the Company’s incremental borrowing rate at the inception of the arrangement on the outstanding financing obligation. Judgment is required to determine the appropriate borrowing rate for the arrangement and in determining any gain or loss on the transaction that would be recorded either at the end of or over the lease term. Business Combinations The Company accounts for its business combinations in accordance with ASC 805, Business Combinations, or ASC 805. ASC 805 requires an acquirer to recognize and measure in its financial statements the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest in the acquiree at fair value at the acquisition date. It also recognizes and measures the goodwill acquired or a gain from a bargain purchase in the business combination and determines what information to disclose to enable users of an entity's financial statements to evaluate the nature and financial effects of the business combination. In addition, transaction costs are expensed as incurred. Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions impact the reported amount of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. They also impact the reported amount of net earnings during the reporting period. Actual results could be different from these estimates. In recording transactions and balances resulting from business operations, the Company uses estimates based on the best information available. Estimates are used for such items as plant depreciable lives, uncollectible accounts, environmental liabilities, acquisition accounting and legal costs incurred in connection with recorded loss contingencies, among others. As better information becomes available or actual amounts are determinable, the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates. Tax Equity Arrangements Certain portions of the Company’s noncontrolling interests in subsidiaries represent third-party interests in the net assets under certain tax equity arrangements, which are consolidated by the Company, that have been entered into to finance the cost of wind facilities eligible for certain tax credits. Additionally, certain portions of the Company’s investments in unconsolidated affiliates reflect the Company’s interests in tax equity arrangements, that are not consolidated by the Company, that have been entered into to finance the cost of distributed solar energy systems under operating leases or PPAs eligible for certain tax credits. The Company has determined that the provisions in the contractual agreements of these structures represent substantive profit sharing arrangements. Further, the Company has determined that the appropriate methodology for calculating the noncontrolling interest and investment in unconsolidated affiliates that reflects the substantive profit sharing arrangements is a balance sheet approach utilizing the hypothetical liquidation at book value, or HLBV, method. Under the HLBV method, the amounts reported as noncontrolling interests and investment in unconsolidated affiliates represent the amounts the investors to the tax equity arrangements would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreements, assuming the net assets of the funding structures were liquidated at their recorded amounts determined in accordance with U.S. GAAP. The investors’ interests in the results of operations of the funding structures are determined as the difference in noncontrolling interests and investment in unconsolidated affiliates at the start and end of each reporting period, after taking into account any capital transactions between the structures and the funds’ investors. The calculations utilized to apply the HLBV method include estimated calculations of taxable income or losses for each reporting period. Reclassifications Certain prior year amounts have been reclassified for comparative purposes. Recent Accounting Developments ASU 2016-01 — In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , or ASU No. 2016-01. The amendments of ASU No. 2016-01 eliminate available-for-sale classification of equity investments and require that equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be generally measured at fair value with changes in fair value recognized in net income. Further, the amendments require that financial assets and financial liabilities to be presented separately in the notes to the financial statements, grouped by measurement category and form of financial asset. The guidance in ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those annual periods. The Company is currently evaluating the impact of the standard on the Company's results of operations, cash flows and financial position. ASU 2015-16 — In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments , or ASU No. 2015-16. The amendments of ASU No. 2015-16 require that an acquirer recognize measurement period adjustments to the provisional amounts recognized in a business combination in the reporting period during which the adjustments are determined. Additionally, the amendments of ASU No. 2015-16 require the acquirer to record in the same period's financial statements the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the measurement period adjustment, calculated as if the accounting had been completed at the acquisition date as well as disclosing on either the face of the income statement or in the notes the portion of the amount recorded in current period earnings that would have been recorded in previous reporting periods. The guidance in ASU No. 2015-16 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The amendments should be applied prospectively. The adoption of this standard is not expected to have a material impact on the Company's results of operations, cash flows or financial position. ASU 2015-03 and ASU 2015-15 — In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , or ASU No. 2015-03. The amendments of ASU No. 2015-03 were issued to reduce complexity in the balance sheet presentation of debt issuance costs. ASU No. 2015-03 requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this standard. Additionally, in August 2015, the FASB issued ASU No. 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, or ASU No. 2015-15, as ASU No. 2015-03 did not specifically address presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. ASU No. 2015-15 allows an entity to continue to defer and present debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The guidance in ASU No. 2015-03 and ASU No. 2015-15 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been previously issued. The Company adopted ASU No. 2015-03 for the year ended December 31, 2015, which resulted in decreases to other assets and debt of $50 million and $58 million as of December 31, 2015 , and December 31, 2014 , respectively. The adoption of this standard had no impact on the Company's results of operations, cash flows or net assets. ASU 2015-02 — In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis , or ASU No. 2015-02. The amendments of ASU No. 2015-02 were issued in an effort to minimize situations under previously existing guidance in which a reporting entity was required to consolidate another legal entity in which that reporting entity did not have: (1) the ability through contractual rights to act primarily on its own behalf; (2) ownership of the majority of the legal entity's voting rights; or (3) the exposure to a majority of the legal entity's economic benefits. ASU No. 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. The guidance in ASU No. 2015-02 is effective for periods beginning after December 15, 2015. Early adoption is permitted. The Company adopted the standard effective January 1, 2015 and the adoption of this standard did not impact the Company's results of operations, cash flows or financial position. ASU 2014-16 - In November 2014, the FASB issued ASU No. 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity , or ASU No. 2014-16. The amendments of ASU No. 2014-16 clarify how U.S. GAAP should be applied in determining whether the nature of a host contract is more akin to debt or equity and in evaluating whether the economic characteristics and risks of an embedded feature are "clearly and closely related" to its host contract. The guidance in ASU No. 2014-16 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The Company adopted the standard effective January 1, 2015 and the adoption of this standard did not impact the Company's results of operations, cash flows or financial position. ASU 2014-09 - In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU No. 2014-09. The amendments of ASU No. 2014-09 complete the joint effort between the FASB and the International Accounting Standards Board, or IASB, to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards, or IFRS, and to improve financial reporting. The guidance in ASU No. 2014-09 provides that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes the following steps to be applied by an entity: (1) identify the contract with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies the performance obligation. In August 2015, the FASB issued ASU 2015-14, which formally deferred the effective date by one year to make the guidance of ASU No. 2014-09 effective for annual reporting periods beginning after December 15, 2017, including interim reports therein. Early adoption is permitted, but not prior to the original effective date, which was for annual reporting periods beginning after December 15, 2016. The Company is currently evaluating the impact of the standard on the Company's results of operations, cash flows and financial position.

Business Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 31, 2015
Business Acquisition [Line Items]
Business Acquisition	Business Acquisitions 2015 Acquisitions November 2015 Drop Down Assets from NRG On November 3, 2015, the Company acquired 75% of the Class B interests of NRG Wind TE Holdco, or the November 2015 Drop Down Assets, which owns a portfolio of 12 wind facilities totaling 814 net MW, from NRG for cash consideration of $209 million , subject to working capital adjustments. In February 2016, NRG made a final working capital payment of $2 million , reducing total cash consideration to $207 million . The Company is responsible for its pro-rata share of non-recourse project debt of $193 million and noncontrolling interest associated with a tax equity structure of $159 million (as of the acquisition date). The Company funded the acquisition with borrowings from its revolving credit facility. The assets and liabilities transferred to the Company relate to interests under common control by NRG and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid and historical value of the entities' equity was recorded as a distribution from NRG with the offset to contributed capital. Because the transaction constituted a transfer of net assets under common control, the guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. The Class A interests of NRG Wind TE Holdco are owned by a tax equity investor, or TE Investor, who receives 99% of allocations of taxable income and other items until the flip point, which occurs when the TE Investor obtains a specified return on its initial investment, at which time the allocations to the TE Investor change to 8.53% . The Company generally receives 75% of CAFD until the flip point, at which time the allocations to the Company of CAFD change to 68.60% . If the flip point has not occurred by a specified date, 100% of CAFD is allocated to the TE Investor until the flip point occurs. NRG Wind TE Holdco is a VIE and the Company is the primary beneficiary, through its position as managing member, and consolidates NRG Wind TE Holdco. The following is a summary of assets and liabilities transferred in connection with the acquisition as of November 3, 2015: NRG Wind TE Holdco (In millions) Current assets $ 30 Property, plant and equipment 669 Non-current assets 177 Total assets 876 Debt 193 Other current and non-current liabilities 32 Total liabilities 225 Less: noncontrolling interest 282 Net assets acquired $ 369 The following table presents the historical information summary combining the financial information for the November 2015 Drop Down Assets transferred in connection with the acquisition: December 31, 2014 As Previously Reported NRG Wind TE Holdco As Currently Reported Current assets $ 590 $ 66 $ 656 Property, plant and equipment 4,466 709 5,175 Non-current assets 1,712 (a) 184 1,896 Total assets 6,768 959 7,727 Debt 4,740 (a) 198 4,938 Other current and non-current liabilities 292 21 313 Total liabilities 5,032 219 5,251 Net assets $ 1,736 $ 740 (b) $ 2,476 (a) Retrospectively adjusted to reclassify deferred financing costs in accordance with ASU 2015-03 as further discussed in Note 2 , Summary of Significant Accounting Policies . (b) Net Assets for NRG Wind TE Holdco as of December 31, 2014, includes noncontrolling interest of $199 million attributable to the TE Investor and $135 million attributable to NRG. Year ended December 31, 2014 As Previously Reported NRG Wind TE Holdco As Currently Reported Total operating revenues $ 689 $ 57 $ 746 Operating income 272 (6 ) 266 Net income 121 (13 ) 108 Year ended December 31, 2013 As Previously Reported NRG Wind TE Holdco As Currently Reported Total operating revenues $ 379 $ 8 $ 387 Operating income 167 (9 ) 158 Net income 143 (9 ) 134 Supplemental Pro Forma Information As described above, the Company's acquisition of the November 2015 Drop Down Assets was accounted for as a transfer of entities under common control. The following unaudited supplemental pro forma information represents the results of operations as if the Company had acquired the November 2015 Drop Down Assets on January 1, 2014, including the impact of acquisition accounting with respect to NRG's acquisition of the projects, all of which were acquired by NRG on April 1, 2014, except for Elbow Creek. (In millions) For the year ended December 31, 2014 Operating revenues $ 768 Net income 105 Since the acquisition date, the November 2015 Drop Down Assets contributed $14 million in operating revenues and $1 million in net income. Desert Sunlight — On June 29, 2015, the Company acquired 25% of the membership interest in Desert Sunlight Investment Holdings, LLC, which owns two solar photovoltaic facilities that total 550 MW, located in Desert Center, California from EFS Desert Sun, LLC, an affiliate of GE Energy Financial Services for a purchase price of $285 million . Power generated by the facilities is sold to Southern California Edison and Pacific Gas and Electric under long-term PPAs with approximately 20 years and 25 years of remaining contract life, respectively. The Company accounts for its 25% investment as an equity method investment. Spring Canyon — On May 7, 2015, the Company acquired a 90.1% interest in Spring Canyon II, a 32 MW wind facility, and Spring Canyon III, a 28 MW wind facility, each located in Logan County, Colorado, from Invenergy Wind Global LLC. The purchase price was funded with cash on hand. Power generated by Spring Canyon II and Spring Canyon III is sold to Platte River Power Authority under long-term PPAs, each with approximately 24 years of remaining contract life. University of Bridgeport Fuel Cell — On April 30, 2015, the Company completed the acquisition of the University of Bridgeport Fuel Cell project in Bridgeport, Connecticut from FuelCell Energy, Inc. The project added an additional 1.4 MW of thermal capacity to the Company's portfolio, with a 12 -year contract, with the option for a 7 -year extension. The acquisition is reflected in the Company's Thermal segment. January 2015 Drop Down Assets from NRG — On January 2, 2015, the Company acquired the following projects from NRG: (i) Laredo Ridge, an 80 MW wind facility located in Petersburg, Nebraska, (ii) Tapestry, which includes Buffalo Bear, a 19 MW wind facility in Buffalo, Oklahoma; Taloga, a 130 MW wind facility in Putnam, Oklahoma; and Pinnacle, a 55 MW wind facility in Keyser, West Virginia, and (iii) Walnut Creek, a 485 MW natural gas facility located in City of Industry, California, for total cash consideration of $489 million , including $9 million for working capital, plus assumed project-level debt of $737 million . The Company funded the acquisition with cash on hand and drawings under its revolving credit facility. The assets and liabilities transferred to the Company relate to interests under common control by NRG and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid and the historical value of the entities' equity of $61 million , as well as $23 million of AOCL, was recorded as a distribution to NRG and reduced the balance of its contributed capital. Since the transaction constituted a transfer of assets under common control, the guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. NRG acquired the majority of EME's assets, including Laredo Ridge, Tapestry and Walnut Creek, on April 1, 2014. Supplemental Pro Forma Information As described above, the Company's acquisition of the January 2015 Drop Down Assets was accounted for as a transfer of entities under common control and all periods were retrospectively adjusted to reflect the entities as if they were transferred on the date the entities were under common control, which was April 1, 2014, the date NRG acquired Walnut Creek, Laredo Ridge and Tapestry. The following unaudited supplemental pro forma information represents the results of operations as if the Company had acquired the January 2015 Drop Down Assets on January 1, 2014, including the impact of acquisition accounting with respect to NRG's acquisition of the projects. (In millions) For the year ended December 31, 2014 Operating revenues $ 772 Net income 100 Since the acquisition date, the January 2015 Drop Down Assets contributed $144 million in operating revenues and $44 million in net income. 2014 Acquisitions Alta Wind Portfolio Acquisition — On August 12, 2014, the Company acquired 100% of the membership interests of Alta Wind Asset Management Holdings, LLC, Alta Wind Company, LLC, Alta Wind X Holding Company, LLC and Alta Wind XI Holding Company, LLC, which collectively own seven wind facilities that total 947 MW located in Tehachapi, California and a portfolio of associated land leases, or the Alta Wind Portfolio. Power generated by the Alta Wind Portfolio is sold to Southern California Edison under long-term PPAs with 21 years of remaining contract life for Alta I-V. The Alta Wind X and XI PPAs began in 2016 with a term of 22 years and sold energy and renewable energy credits on a merchant basis during the years ending December 31, 2014, and 2015. The purchase price for the Alta Wind Portfolio was $923 million , which consisted of a base purchase price of $870 million , as well as a payment for working capital of $53 million , plus the assumption of $1.6 billion of non-recourse project-level debt. In order to fund the purchase price, the Company completed an equity offering of 12,075,000 shares of its Class A common stock at an offering price of $54.00 per share on July 29, 2014, which resulted in net proceeds of $630 million , after underwriting discounts and expenses. In addition, on August 5, 2014, NRG Yield Operating LLC issued $500 million of Senior Notes, which bear interest at a rate of 5.375% and mature in August 2024. The acquisition was recorded as a business combination under ASC 805-50, with identifiable assets acquired and liabilities assumed provisionally recorded at their estimated fair values on the acquisition date. The accounting for the business combination was completed as of August 11, 2015, at which point the fair values became final. The following table summarizes the provisional amounts recognized for assets acquired and liabilities assumed as of December 31, 2014, as well as adjustments made through August 11, 2015, when the allocation became final. The purchase price of $923 million was allocated as follows: Acquisition Date Fair Value at December 31, 2014 Measurement period adjustments Revised Acquisition Date (In millions) Assets Cash $ 22 $ — $ 22 Current and non-current assets 49 (2 ) 47 Property, plant and equipment 1,304 6 1,310 Intangible assets 1,177 (6 ) 1,171 Total assets acquired 2,552 (2 ) 2,550 Liabilities Debt 1,591 — 1,591 Current and non-current liabilities 38 (2 ) 36 Total liabilities assumed 1,629 (2 ) 1,627 Net assets acquired $ 923 $ — $ 923 The Company incurred and expensed acquisition-related transaction costs related to the acquisition of the Alta Wind Portfolio of $2 million for the year ended December 31, 2014 . June 2014 Drop Down Assets — On June 30, 2014, the Company acquired from NRG: (i) El Segundo, a 550 MW fast-start, gas-fired facility located in Los Angeles County, California; (ii) TA High Desert, a 20 MW solar facility located in Los Angeles County, California; and (iii) Kansas South, a 20 MW solar facility located in Kings County, California. The Company paid total cash consideration of $357 million , which represents a base purchase price of $349 million and $8 million of working capital adjustments. In addition, the acquisition included the assumption of $612 million of project- level debt. The assets and liabilities transferred to the Company relate to interests under common control by NRG and were recorded at historical cost in accordance with ASC 805-50 . The difference between the cash proceeds and the historical value of the net assets was recorded as a distribution to NRG and reduced the balance of its contributed capital. Since the transaction constituted a transfer of entities under common control, the guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the beginning of the financial statements period or the inception of common control (if later than the beginning of the financial statements period). Accordingly, the Company prepared its consolidated financial statements to reflect the transfer as if it had taken place from the beginning of the financial statements period. 2013 Acquisitions Energy Systems — On December 31, 2013, NRG Energy Center Omaha Holdings, LLC, an indirect wholly owned subsidiary of NRG Yield LLC, acquired Energy Systems Company, or Energy Systems, for approximately $120 million . The acquisition was financed using cash on hand. Energy Systems is an operator of steam and chilled water thermal facilities that provides heating and cooling services to nonresidential customers in Omaha, Nebraska. The acquisition was recorded as a business combination under ASC 805, with identifiable assets acquired and liabilities assumed recorded at their fair values. The purchase price was primarily allocated to property, plant and equipment of $60 million , customer relationships of $59 million , and $1 million of working capital.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Table Text Block]	The Company’s major classes of property, plant, and equipment were as follows: December 31, 2015 December 31, 2014 Depreciable Lives (In millions) Facilities and equipment $ 5,597 $ 5,454 2 - 40 Years Land and improvements 151 150 Construction in progress 9 9 Total property, plant and equipment 5,757 5,613 Accumulated depreciation (701 ) (438 ) Net property, plant and equipment $ 5,056 $ 5,175
Property, Plant and Equipment Disclosure	Property, Plant and Equipment The Company’s major classes of property, plant, and equipment were as follows: December 31, 2015 December 31, 2014 Depreciable Lives (In millions) Facilities and equipment $ 5,597 $ 5,454 2 - 40 Years Land and improvements 151 150 Construction in progress 9 9 Total property, plant and equipment 5,757 5,613 Accumulated depreciation (701 ) (438 ) Net property, plant and equipment $ 5,056 $ 5,175

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments Accounted for by the Equity Method and Variable Interest Entities	Investments Accounted for by the Equity Method and Variable Interest Entities Equity Method Investments The following table summarizes the Company's equity method investments as of December 31, 2015 : Name Economic Interest Investment Balance (In millions) Desert Sunlight 25% 291 GenConn (a)(b) 50% 110 CVSR 48.95% 101 Elkhorn Ridge (c) 50.3% 96 San Juan Mesa (c) 56.3% 80 NRG DGPV Holdco 1 LLC (d) 95% 71 NRG RPV Holdco 1 LLC (e) 95% 58 Avenal (b) 50% (9) (a) GenConn is a variable interest entity. (b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015. (c) San Juan Mesa and Elkhorn Ridge are part of the TE Wind Holdco tax equity structure, as described below. San Juan Mesa and Elkhorn Ridge are owned 75% and 66.7% , respectively, by TE Wind Holdco. The Company owns 75% of the Class B interests in TE Wind Holdco. (d) NRG DGPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below. (e) NRG RPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below. As of December 31, 2015 , the Company had no undistributed earnings from its equity method investments. As of December 31, 2014 , the Company had $17 million of undistributed earnings from its equity method investments. The Company acquired its interest in Desert Sunlight on June 30, 2015, for $285 million , which resulted in a difference between the purchase price and the basis of the acquired assets and liabilities of $171 million . The difference is attributable to the fair value of the property, plant and equipment and power purchase agreements. The Company is amortizing the related basis difference to equity in earnings (losses) over the related useful life of the underlying assets acquired. Non-recourse project-level debt of unconsolidated affiliates The Company's pro-rata share of non-recourse debt held by unconsolidated affiliates was approximately $842 million as of December 31, 2015 . Avenal — The Company owns a 50% equity interest in Avenal, which consists of three solar PV projects in Kings County, California totaling approximately 45 MWs. Eurus Energy owns the remaining 50% of Avenal. Power generated by the projects is sold under a 20 -year PPA. On September 22, 2010, Avenal entered into a $35 million promissory note facility with the Company. Amounts drawn under the promissory note facility accrue interest at 4.5% per annum. Also, on September 22, 2010, Avenal entered into a $209 million financing arrangement with a syndicate of banks, or the Avenal Facility. As of December 31, 2015 , and 2014 , Avenal had outstanding $143 million and $107 million , respectively, under the Avenal Facility. CVSR — In 2011, High Plains Ranch II, LLC, the direct owner of CVSR, entered into the CVSR Financing Agreement with the FFB to borrow up to $1.2 billion to fund the costs of constructing the solar facility. The CVSR Financing Agreement matures in 2037 and the loans provided by the FFB are guaranteed by the U.S. DOE. Amounts borrowed under the CVSR Financing Agreement accrue interest at a fixed rate based on U.S. Treasury rates plus a spread of 0.375% and are secured by the assets of CVSR. As of December 31, 2015 , and 2014 , $793 million and $815 million , respectively, were outstanding under the loan. T he U.S. Treasury Department awarded cash grants on the CVSR project of $307 million ( $285 million net of sequestration), which is approximately 75% of the cash grant amount for which the Company had applied. The cash grant proceeds were used to pay the outstanding balance of the bridge loan due in February 2014 and the remaining amount was used to pay a portion of the outstanding balance on the bridge loan due in August 2014. The remaining balance of the bridge loan due in August 2014 was paid by SunPower. GenConn — GenConn has a $237 million project note with an interest rate of 4.73% and a maturity date of July 2041 and a 5-year, $35 million working capital facility that matures in 2018 which can be used to issue letters of credit at an interest rate of 1.875% per annum. As of December 31, 2015 , $220 million was outstanding under the note and $14 million was drawn on the working capital facility. The note is secured by all of the GenConn assets. In March 2015, GenConn entered into a settlement agreement relating to a lawsuit it filed against the electrical contractor responsible for the design and installation of the 5X and 6X circuits at the GenConn Middletown facility and one of its subcontractors. The results of the settlement agreement are not expected to have a material impact on the Company's results of operations, cash flows or financial position. Desert Sunlight — Desert Sunlight 250 and Desert Sunlight 300 each entered into three distinct tranches of debt. As of December 31, 2015 , and 2014 , Desert Sunlight had total debt outstanding of $1.1 billion and $1.5 billion , respectively, under the three tranches. The following tables present summarized financial information for the Company's significant equity method investments: Year Ended December 31, 2015 2014 2013 Income Statement Data: (In millions) CVSR Operating revenues $ 83 $ 82 $ 47 Operating income 43 40 22 Net income 19 17 4 GenConn Operating revenues 78 82 80 Operating income 40 40 44 Net income 28 28 31 Desert Sunlight Operating revenues 206 Operating income 124 Net income 73 As of December 31, 2015 2014 Balance Sheet Data: (In millions) CVSR Current assets $ 98 $ 173 Non-current assets 917 868 Current liabilities 33 33 Non-current liabilities 775 799 GenConn Current assets 36 33 Non-current assets 416 438 Current liabilities 16 20 Non-current liabilities 215 223 Desert Sunlight Current assets 310 Non-current assets 1,435 Current liabilities 82 Non-current liabilities 1,086 Variable Interest Entities, or VIEs Entities that are Consolidated NRG Wind TE Holdco — On November 3, 2015, the Company acquired 75% of the Class B interests of NRG Wind TE Holdco, or the November 2015 Drop Down Assets, which owns a portfolio of 12 wind facilities totaling 814 net MW, from NRG for total cash consideration of $209 million , as described in Note 3 , Business Acquisitions . In February 2016, NRG made a final working capital payment of $2 million , reducing total cash consideration to $207 million . NRG retained a 25% ownership of the Class B interest. The Class A interests of NRG Wind TE Holdco are owned by a tax equity investor, or TE Investor, who receives 99% of allocations of taxable income and other items until the flip point, which occurs when the TE Investor obtains a specified return on its initial investment, at which time the allocations to the TE Investor change to 8.53% . The Company generally receives 75% of CAFD until the flip point, at which time the allocations to the Company of CAFD change to 68.60% . If the flip point has not occurred by a specified date, 100% of CAFD is allocated to the TE Investor until the flip point occurs. NRG Wind TE Holdco is a VIE and the Company is the primary beneficiary, through its position as managing member, and consolidates NRG Wind TE Holdco. The Company utilizes the HLBV method to determine the net income or loss allocated to the TE Investor noncontrolling interest. Net income or loss attributable to the Class B interests is allocated to NRG's noncontrolling interest based on its 25% ownership interest. Alta TE Holdco — On June 30, 2015, the Company sold an economic interest in Alta TE Holdco to a financial institution in order to monetize certain cash and tax attributes, primarily PTCs. The financial institution, or Alta Investor, receives 99% of allocations of taxable income and other items until the flip point, which occurs when the Alta Investor obtains a specified return on its initial investment, at which time the allocations to the Alta Investor change to 5% . The Company received 100% of CAFD through December 31, 2015, and subsequently will receive 94.34% until the flip point, at which time the allocations to the Company of CAFD will change to 97.12% , unless the flip point will not have occurred by a specified date, which would result in 100% of CAFD allocated to the Alta Investor until the flip point occurs. Alta TE Holdco is a VIE and the Company is the primary beneficiary through its position as managing member, and therefore consolidates Alta TE Holdco, with the Alta Investor's interest shown as noncontrolling interest. The Company utilizes the HLBV method to determine the net income or loss allocated to the noncontrolling interest. The net proceeds of $119 million are reflected as noncontrolling interest in the Company's balance sheet. Spring Canyon — On May 7, 2015, the Company acquired a 90.1% of the Class B interests in Spring Canyon II, a 32 MW wind facility, and Spring Canyon III, a 28 MW wind facility, each located in Logan County, Colorado, from Invenergy Wind Global LLC. Invenergy owns 9.9% of the Class B interests. Prior to the acquisition date, the projects were financed with a partnership flip tax-equity structure with a financial institution, who owns the Class A interests, to monetize certain cash and tax attributes, primarily PTCs. Until the flip point, the Class A member will receive 34.81% of the cash distributions based on the projects’ production level and the Company and Invenergy will receive 65.19% . After the flip point, cash distributions are allocated 5% to the Class A member and 95% to the Company and Invenergy. Spring Canyon is a VIE and the Company is the primary beneficiary through its position as managing member, and therefore consolidates Spring Canyon. The Class A member and Invenergy's interests are shown as noncontrolling interest. The Company utilizes the HLBV method to determine the net income or loss allocated to the Class A member. Net Income or loss attributable to the Class B interests is allocated to Invenergy's noncontrolling interest based on its 9.9% ownership interest. Summarized financial information for the Company's consolidated VIEs consisted of the following as of December 31, 2015 : (In millions) NRG TE Wind Holdco Alta Wind TE Holdco Spring Canyon Other current and non-current assets $ 204 $ 18 $ 3 Property, plant and equipment 663 484 104 Intangible assets 2 287 — Total assets 869 789 107 Current and non-current liabilities 220 10 5 Total liabilities 220 10 5 Noncontrolling interest 268 121 70 Net assets less noncontrolling interests $ 381 $ 658 $ 32 Entities that are not Consolidated The Company has interests in entities that are considered VIEs under ASC 810, Consolidation , but for which it is not considered the primary beneficiary. The Company accounts for its interests in these entities under the equity method of accounting. NRG DGPV Holdco 1 LLC — On May 8, 2015, NRG Yield DGPV Holding LLC, a subsidiary of the Company and NRG Renew DG Holdings LLC, a subsidiary of NRG, entered into a partnership by forming NRG DGPV Holdco 1 LLC, or DGPV Holdco 1, the purpose of which is to own or purchase solar power generation projects and other ancillary related assets from NRG Renew DG Holdings LLC, via intermediate funds, including: (i) a tax equity-financed portfolio of 10 recently completed community solar projects representing approximately 8 MW with a weighted average remaining PPA term of 20 years ; and (ii) a tax equity-financed portfolio of approximately 12 commercial photovoltaic systems representing approximately 37 MW with a weighted average remaining PPA term of 19 years . The following illustrates the structure of DGPV Holdco: As of December 31, 2015 , the Company's investment in DGPV Holdco 1 related to the recently completed community solar projects was $17 million . Additionally, as of December 31, 2015 , the Company's investment in DGPV Holdco 1 related to the commercial photovoltaic systems was $55 million , $44 million of which remained payable and is recorded in accounts payable — affiliate on the consolidated balance sheet at December 31, 2015 . Both of these investments relate to the Company's $100 million commitment to distributed solar projects in partnership with NRG. The Company's maximum exposure to loss is limited to its equity investment. NRG DGPV Holdco 2 LLC — On February 29, 2016, the Company and NRG entered into an additional partnership by forming NRG DGPV Holdco 2 LLC, or DGPV Holdco 2, to own or purchase solar power generation projects and other ancillary related assets from NRG Renew LLC or its subsidiaries, via intermediate funds. Under this partnership, the Company committed to fund up to $50 million of capital. NRG RPV Holdco 1 LLC — On April 9, 2015, NRG Yield RPV Holding LLC, a subsidiary of the Company and NRG Residential Solar Solutions LLC, a subsidiary of NRG, entered into a partnership by forming NRG RPV Holdco 1 LLC, or RPV Holdco, that will invest in and hold operating portfolios of residential solar assets developed by NRG Home Solar, a subsidiary of NRG, including: (i) an existing, unlevered portfolio of over 2,200 leases across nine states representing approximately 17 MW with a weighted average remaining lease term of approximately 17 years ; and (ii) a tax equity-financed portfolio of approximately 5,700 leases representing approximately 40 MW, with an average lease term for the existing and new leases of approximately 17 to 20 years . The following illustrates the structure of RPV Holdco: The Company invested $26 million in RPV Holdco in April 2015 related to the existing, unlevered portfolio of leases. The Company also invested $36 million of its $150 million commitment in the tax equity-financed portfolio through December 31, 2015 . The Company's maximum exposure to loss is limited to its equity investment.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments For cash and cash equivalents, restricted cash, accounts receivable — affiliate, accounts receivable accounts payable, accounts payable — affiliate, accrued expenses and other liabilities, the carrying amount approximates fair value because of the short-term maturity of those instruments and are classified as Level 1 within the fair value hierarchy. The estimated carrying amounts and fair values of the Company’s recorded financial instruments not carried at fair market value are as follows: As of December 31, 2015 As of December 31, 2014 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Assets: Notes receivable, including current portion 17 17 21 21 Liabilities: Long-term debt, including current portion — affiliate 618 553 337 386 Long-term debt, including current portion — external 4,267 4,181 4,659 4,676 The fair value of notes receivable and long-term debt are based on expected future cash flows discounted at market interest rates, or current interest rates for similar instruments and are classified as Level 3 within the fair value hierarchy. Fair Value Accounting under ASC 820 ASC 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows: • Level 1—quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date. • Level 2—inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data. • Level 3—unobservable inputs for the asset or liability only used when there is little, if any, market activity for the asset or liability at the measurement date. In accordance with ASC 820, the Company determines the level in the fair value hierarchy within which each fair value measurement in its entirety falls, based on the lowest level input that is significant to the fair value measurement. Recurring Fair Value Measurements The Company records its derivative assets and liabilities at fair market value on its consolidated balance sheet. There were no asset positions as of December 31, 2015 . The following table presents assets and liabilities measured and recorded at fair value on the Company's consolidated balance sheets on a recurring basis and their level within the fair value hierarchy: As of December 31, 2015 As of December 31, 2014 Fair Value (a) Fair Value (a) (In millions) Level 2 Level 2 Derivative assets: Commodity contracts $ — $ 2 Interest rate contracts — 2 Total assets $ — 4 Derivative liabilities: Commodity contracts $ 2 3 Interest rate contracts 98 126 Total liabilities $ 100 $ 129 (a) There were no assets or liabilities classified as Level 1 or Level 3 as of December 31, 2015 , and 2014 . Derivative Fair Value Measurements The Company's contracts are non-exchange-traded and valued using prices provided by external sources. For the Company’s energy markets, management receives quotes from multiple sources. To the extent that multiple quotes are received, the prices reflect the average of the bid-ask mid-point prices obtained from all sources believed to provide the most liquid market for the commodity. The fair value of each contract is discounted using a risk free interest rate. In addition, a credit reserve is applied to reflect credit risk, which for interest rate swaps, is calculated based on credit default swaps utilizing the bilateral method. For commodities, to the extent that NRG's net exposure under a specific master agreement is an asset, the Company uses the counterparty's default swap rate. If the exposure under a specific master agreement is a liability, the Company uses NRG's default swap rate. For interest rate swaps and commodities, the credit reserve is added to the discounted fair value to reflect the exit price that a market participant would be willing to receive to assume the liabilities or that a market participant would be willing to pay for the assets. As of December 31, 2015 , the credit reserve resulted in a $1 million increase in fair value which is a gain in OCI. It is possible that future market prices could vary from those used in recording assets and liabilities and such variations could be material. Concentration of Credit Risk In addition to the credit risk discussion as disclosed in Note 2 , Summary of Significant Accounting Policies , the following item is a discussion of the concentration of credit risk for the Company's financial instruments. Credit risk relates to the risk of loss resulting from non-performance or non-payment by counterparties pursuant to the terms of their contractual obligations. The Company monitors and manages credit risk through credit policies that include: (i) an established credit approval process; (ii) a daily monitoring of counterparties' credit limits; (iii) the use of credit mitigation measures such as margin, collateral, prepayment arrangements, or volumetric limits; (iv) the use of payment netting agreements; and (v) the use of master netting agreements that allow for the netting of positive and negative exposures of various contracts associated with a single counterparty. Risks surrounding counterparty performance and credit could ultimately impact the amount and timing of expected cash flows. The Company seeks to mitigate counterparty risk by having a diversified portfolio of counterparties. Counterparty credit exposure includes credit risk exposure under certain long-term agreements, including solar and other PPAs. As external sources or observable market quotes are not available to estimate such exposure, the Company estimates the exposure related to these contracts based on various techniques including but not limited to internal models based on a fundamental analysis of the market and extrapolation of observable market data with similar characteristics. Based on these valuation techniques, as of December 31, 2015 , credit risk exposure to these counterparties attributable to the Company's ownership interests was approximately $2.7 billion for the next five years . The majority of these power contracts are with utilities with strong credit quality and public utility commission or other regulatory support, as further described in Note 11 , Segment Reporting . However, such regulated utility counterparties can be impacted by changes in government regulations, which the Company is unable to predict.

Accounting for Derivative Instr

Accounting for Derivative Instruments and Hedging Activities (Notes)	12 Months Ended
	Dec. 31, 2015
Derivative [Line Items]
Accounting for Derivative Instruments and Hedging Activities	Accounting for Derivative Instruments and Hedging Activities ASC 815 requires the Company to recognize all derivative instruments on the balance sheet as either assets or liabilities and to measure them at fair value each reporting period unless they qualify for a NPNS exception. The Company may elect to designate certain derivatives as cash flow hedges, if certain conditions are met, and defer the effective portion of the change in fair value of the derivatives to accumulated OCI, until the hedged transactions occur and are recognized in earnings. The ineffective portion of a cash flow hedge is immediately recognized in earnings. For derivatives that are not designated as cash flow hedges or do not qualify for hedge accounting treatment, the changes in the fair value will be immediately recognized in earnings. Certain derivative instruments may qualify for the NPNS exception and are therefore exempt from fair value accounting treatment. ASC 815 applies to the Company's energy related commodity contracts and interest rate swaps. Energy-Related Commodities To manage the commodity price risk associated with its competitive supply activities and the price risk associated with wholesale power sales, the Company may enter into derivative hedging instruments, namely, forward contracts that commit the Company to sell energy commodities or purchase fuels in the future. The objectives for entering into derivatives contracts designated as hedges include fixing the price for a portion of anticipated future electricity sales and fixing the price of a portion of anticipated fuel purchases for the operation of its subsidiaries. As of December 31, 2015 , the Company had forward contracts for the purchase of fuel commodities relating to the forecasted usage of the Company’s district energy centers extending through 2018. At December 31, 2015 , these contracts were not designated as cash flow or fair value hedges. Also, as of December 31, 2015 , the Company had other energy-related contracts that did not meet the definition of a derivative instrument or qualified for the NPNS exception and were therefore exempt from fair value accounting treatment as follows: • Power tolling contracts through 2039, and • Natural gas transportation contracts through 2028 Interest Rate Swaps The Company is exposed to changes in interest rates through the issuance of variable rate debt. In order to manage interest rate risk, it enters into interest rate swap agreements. As of December 31, 2015 , the Company had interest rate derivative instruments on non-recourse debt extending through 2031, most of which are designated as cash flow hedges. Volumetric Underlying Derivative Transactions The following table summarizes the net notional volume buy/(sell) of the Company's open derivative transactions broken out by commodity as of December 31, 2015 and 2014 : Total Volume December 31, 2015 December 31, 2014 Commodity Units (In millions) Natural Gas MMBtu 4 2 Interest Dollars $ 1,991 $ 3,059 The decrease in the interest rate position is primarily the result of settling the Alta X and Alta XI interest rate swaps in connection with the repayment of the outstanding project-level debt during the second quarter of 2015, as further described in Note 9 , Long-term Debt . Fair Value of Derivative Instruments There were no derivative asset positions on the balance sheet as of December 31, 2015 . The following table summarizes the fair value within the derivative instrument valuation on the balance sheet: Fair Value Derivative Assets Derivative Liabilities December 31, 2014 December 31, 2015 December 31, 2014 (In millions) Derivatives Designated as Cash Flow Hedges: Interest rate contracts current $ — $ 34 $ 44 Interest rate contracts long-term 2 56 57 Total Derivatives Designated as Cash Flow Hedges 2 90 101 Derivatives Not Designated as Cash Flow Hedges : Interest rate contracts current — 3 5 Interest rate contracts long-term — 5 20 Commodity contracts current 2 2 3 Total Derivatives Not Designated as Cash Flow Hedges 2 10 28 Total Derivatives $ 4 $ 100 $ 129 The Company has elected to present derivative assets and liabilities on the balance sheet on a trade-by-trade basis and does not offset amounts at the counterparty master agreement level. As of December 31, 2015 , there were no offsetting amounts at the counterparty master agreement level or outstanding collateral paid or received. As of December 31, 2014 , there was no outstanding collateral paid or received. The following table summarizes the offsetting of derivatives by counterparty master agreement level as of December 31, 2014 : Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2014 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts: (In millions) Derivative assets $ 2 $ — $ 2 Derivative liabilities (3 ) — (3 ) Total commodity contracts (1 ) — (1 ) Interest rate contracts: Derivative assets 2 (2 ) — Derivative liabilities (126 ) 2 (124 ) Total interest rate contracts (124 ) — (124 ) Total derivative instruments $ (125 ) $ — $ (125 ) Accumulated Other Comprehensive Loss The following table summarizes the effects on the Company’s accumulated OCL balance attributable to interest rate swaps designated as cash flow hedge derivatives: Year ended December 31, 2015 2014 2013 (In millions) Accumulated OCL beginning balance $ (67 ) $ (1 ) $ (48 ) Reclassified from accumulated OCL to income due to realization of previously deferred amounts 16 14 12 Mark-to-market of cash flow hedge accounting contracts (34 ) (80 ) 35 Accumulated OCL ending balance (85 ) (67 ) (1 ) Accumulated OCL attributable to noncontrolling interests (3 ) (2 ) — Accumulated OCL attributable to NRG Yield LLC $ (82 ) $ (65 ) $ (1 ) Losses expected to be realized from OCL during the next 12 months $ 16 Amounts reclassified from accumulated OCL into income and amounts recognized in income from the ineffective portion of cash flow hedges are recorded to interest expense. There was no ineffectiveness for the years ended December 31, 2015 , 2014 and 2013 . Impact of Derivative Instruments on the Statements of Operations The Company has interest rate derivative instruments that are not designated as cash flow hedges. The effect of interest rate hedges is recorded to interest expense. For the years ended December 31, 2015 , and 2014 , the impact to the consolidated statements of operations was a gain of $16 million and a loss of $22 million , respectively. A portion of the Company’s derivative commodity contracts relates to its Thermal Business for the purchase of fuel commodities based on the forecasted usage of the thermal district energy centers. Realized gains and losses on these contracts are reflected in the fuel costs that are permitted to be billed to customers through the related customer contracts or tariffs and, accordingly, no gains or losses are reflected in the consolidated statements of operations for these contracts. Commodity contracts also hedge the forecasted sale of power for the Elbow Creek wind facility. The effect of these commodity hedges is recorded to operating revenues. For the years ended December 31, 2015 , and 2014 , the impact to the consolidated statements of operations was an unrealized loss of $2 million and gain of $2 million , respectively. See Note 6 , Fair Value of Financial Instruments , for discussion regarding concentration of credit risk.

Intangible Assets Intangible As

Intangible Assets Intangible Assets - (Notes)	12 Months Ended
	Dec. 31, 2015
Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	Intangible Assets Intangible Assets — The Company's intangible assets as of December 31, 2015 and 2014 primarily reflect intangible assets established from its business acquisitions and are comprised of the following: • Emission Allowances — These intangibles primarily consist of SO 2 and NO x emission allowances established with the El Segundo and Walnut Creek acquisitions. These emission allowances are held-for-use and are amortized to cost of operations, with NO x allowances amortized on a straight-line basis and SO 2 allowances amortized based on units of production. • Development rights — Arising primarily from the acquisition of solar businesses in 2010 and 2011, these intangibles are amortized to depreciation and amortization expense on a straight-line basis over the estimated life of the related project portfolio. • Customer contracts — Established with the acquisition of NRG Energy Center Phoenix, these intangibles represent the fair value at the acquisition date of contracts that primarily provide chilled water, steam and electricity to its customers. These contracts are amortized to revenues based on expected volumes. • Customer relationships — Established with the acquisition of NRG Energy Center Phoenix and NRG Energy Systems, these intangibles represent the fair value at the acquisition date of the businesses' customer base. The customer relationships are amortized to depreciation and amortization expense based on the expected discounted future net cash flows by year. • PPAs — Established predominantly with the acquisitions of the Alta Wind Portfolio, Walnut Creek, Tapestry and Laredo Ridge, these represent the fair value of the PPAs acquired. These will be amortized, generally on a straight-line basis, over the term of the PPA. • Leasehold Rights — Established with the acquisition of the Alta Wind Portfolio, this represents the fair value of contractual rights to receive royalty payments equal to a percentage of PPA revenue from certain projects. These will be amortized on a straight-line basis. • Other — Consists of the acquisition date fair value of the contractual rights to a ground lease for South Trent and to utilize certain interconnection facilities for Blythe, as well as land rights acquired in connection with the acquisition of Elbow Creek. The following tables summarize the components of intangible assets subject to amortization: Year ended December 31, 2015 Emission Allowances Development Rights Customer Contracts Customer Relationships PPAs Leasehold Rights Other Total (In millions) January 1, 2015 $ 16 $ 4 $ 15 $ 66 $ 1,269 $ 86 $ 6 $ 1,462 Other (1 ) — — — (6 ) — — (7 ) December 31, 2015 15 4 15 66 1,263 86 6 1,455 Less accumulated amortization (1 ) (1 ) (6 ) (3 ) (75 ) (5 ) (2 ) (93 ) Net carrying amount $ 14 $ 3 $ 9 $ 63 $ 1,188 $ 81 $ 4 $ 1,362 Year ended December 31, 2014 Emission Allowances Development Rights Customer Contracts Customer Relationships PPAs Leasehold Rights Other Total (In millions) January 1, 2014 $ 8 $ 4 $ 15 $ 66 $ 14 $ — $ 6 $ 113 Acquisition of Alta Wind Portfolio — — — — 1,092 86 — 1,178 Transfer of January 2015 Drop Down Assets 7 — — — 160 — — 167 Other 1 — — — 3 — — 4 December 31, 2014 16 4 15 66 1,269 86 6 1,462 Less accumulated amortization — (1 ) (5 ) (2 ) (26 ) (2 ) (2 ) (38 ) Net carrying amount $ 16 $ 3 $ 10 $ 64 $ 1,243 $ 84 $ 4 $ 1,424 The Company recorded amortization of $55 million , $30 million and $4 million during the years ended December 31, 2015 , 2014 and 2013 . Of these amounts, $54 million and $29 million for the years ended December 31, 2015 , and 2014 , respectively, were recorded as contra-revenue. The following table presents estimated amortization of the Company's intangible assets for each of the next five years: Year Ended December 31, Total (In millions) 2016 $ 70 2017 70 2018 71 2019 71 2020 71 The weighted average amortization period related to the intangibles acquired in the year ended December 31, 2015, was 18 years for other intangible assets. Out-of-market contracts — The out-of-market contract liability represents the out-of-market value of the PPA for the Blythe solar project and Spring Canyon wind projects and the out-of-market value of the land lease for Alta Wind XI Holding Company, LLC, as of their respective acquisition dates. The Blythe solar project's liability of $5 million is recorded to other non-current liabilities and is amortized to revenue on a units-of-production basis over the twenty -year term of the agreement. Spring Canyon's liability of $3 million is recorded to other non-current liabilities and is amortized to revenue on a straight-line basis over the twenty-five year term of the agreement. The Alta Wind XI Holding Company, LLC's liability of $5 million is recorded to other non-current liabilities and is amortized to cost of operations on a straight-line basis over the term of the land lease. At December 31, 2015 , accumulated amortization of out-of-market contracts was $3 million and amortization expense was $1 million for the year ended December 31, 2015 .

Members' Equity (Notes)

Members' Equity (Notes)	12 Months Ended
	Dec. 31, 2015
Members' Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Members' Equity For all periods prior to the acquisition and Yield, Inc.'s initial public offering, members' equity reflects the combined capital contributed by NRG, as well as its retained earnings and accumulated comprehensive loss. The following table lists the distributions paid on the Company's Class A, Class B, Class C and Class D units during the year ended December 31, 2015 : Fourth Quarter 2015 Third Quarter 2015 Second Quarter 2015 First Quarter 2015 Distributions per Class A and Class B units $ 0.215 $ 0.210 $ 0.20 $ 0.39 Distributions per Class C and Class D units $ 0.215 $ 0.210 $ 0.20 N/A On February 17, 2016 , the Company declared a quarterly distribution on its Class A, Class B, Class C and Class D units of $0.225 per share payable on March 15, 2016 . During 2015 and 2014, the Company acquired the Drop Down Assets from NRG, as described in Note 3 , Business Acquisitions . The difference between the cash paid and historical value of the January 2015 Drop Down Assets and November 2015 Drop Down Assets of $109 million , as well as $32 million of AOCL, was recorded as a contribution from NRG and increased the balance of its contributed capital in 2015. The difference between the cash paid and historical value of the June 2014 Drop Down Assets of $113 million was recorded as a distribution to NRG and reduced the balance of its contributed capital in 2014. Prior to the date of acquisition, certain of the projects made distributions to NRG and NRG made contributions into certain projects. These amounts are reflected within the Company’s statement of stockholders’ equity as changes in the contributed capital balance. In addition, NRG maintained a 25% ownership interest in the Class B interests of NRG TE Wind Holdco. This 25% interest is reflected within the Company’s noncontrolling interest balance.

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt The Company's borrowings, including short term and long term portions consisted of the following: December 31, 2015 December 31, 2014 Interest rate % (a) Letters of Credit Outstanding at December 31, 2015 (In millions, except rates) Senior Notes, due 2024 $ 500 $ 500 5.375 Long-term debt - affiliate, due 2020 281 — 3.325 Long-term debt - affiliate, due 2019 337 337 3.580 NRG Yield LLC and NRG Yield Operating LLC Revolving Credit Facility, due 2019 (b) 306 — L+2.75 56 Project-level debt: Alpine, due 2022 154 163 L+1.75 37 Alta Wind I, lease financing arrangement, due 2034 252 261 7.015 16 Alta Wind II, lease financing arrangement, due 2034 198 205 5.696 28 Alta Wind III, lease financing arrangement, due 2034 206 212 6.067 28 Alta Wind IV, lease financing arrangement, due 2034 133 138 5.938 19 Alta Wind V, lease financing arrangement, due 2035 213 220 6.071 31 Alta Wind X, due 2021 — 300 L+2.00 — Alta Wind XI, due 2021 — 191 L+2.00 — Alta Realty Investments, due 2031 33 34 7.00 — Alta Wind Asset Management, due 2031 19 20 L+2.375 — Avra Valley, due 2031 60 63 L+1.75 3 Blythe, due 2028 21 22 L+1.625 6 Borrego, due 2025 and 2038 72 75 L+ 2.50/5.65 5 El Segundo Energy Center, due 2023 485 506 L+1.625 - L+2.25 82 Energy Center Minneapolis, due 2017 and 2025 108 121 5.95 -7.25 — Kansas South, due 2031 33 35 L+2.00 4 Laredo Ridge, due 2028 104 108 L+1.875 10 Marsh Landing, due 2017 and 2023 418 464 L+1.75 - L+1.875 22 PFMG and related subsidiaries financing agreement, due 2030 29 31 6.00 — Roadrunner, due 2031 40 42 L+1.625 5 South Trent Wind, due 2020 62 65 L+1.625 10 TA High Desert, due 2020 and 2032 52 55 L+2.50/5.15 8 Tapestry Wind, due 2021 181 192 L+1.625 20 Viento, due 2023 189 196 L+2.75 27 Walnut Creek, due 2023 351 391 L+1.625 41 WCEP Holdings, due 2023 46 46 L+3.00 — Other 2 3 various — Subtotal project-level debt: 3,461 4,159 Total debt 4,885 4,996 Less current maturities 241 224 Less deferred financing costs (c) 50 58 Total long-term debt $ 4,594 $ 4,714 (a) As of December 31, 2015 , L+ equals 3 month LIBOR plus x%, except for the NRG Marsh Landing term loan, Walnut Creek term loan, and the Revolving Credit Facility where L+ equals 1 month LIBOR plus x% and Kansas South where L+ equals 6 month LIBOR plus x%. (b) Applicable rate is determined by the Borrower Leverage Ratio, as defined in the credit agreement. (c) Total net debt reflects the reclassification of deferred financing costs to reduce long-term debt as further described in Note 2 , Summary of Significant Accounting Policies . The financing arrangements listed above contain certain covenants, including financial covenants, that the Company is required to be in compliance with during the term of the arrangement. As of December 31, 2015 , the Company was in compliance with all of the required covenants. The Company's pro-rata share of non-recourse debt held by unconsolidated affiliates was approximately $842 million as of December 31, 2015 . Yield, Inc. 2020 Convertible Senior Notes and Related Intercompany Note On June 29, 2015, Yield, Inc. closed on its offering of $287.5 million aggregate principal amount of 3.25% Convertible Senior Notes due 2020, or the 2020 Convertible Notes. The 2020 Convertible Notes are convertible, under certain circumstances, into Yield, Inc.'s Class C common stock, cash or a combination thereof at an initial conversion price of $27.50 per Class C common share, which is equivalent to an initial conversion rate of approximately 36.3636 shares of Class C common stock per $1,000 principal amount of 2020 Convertible Notes. The Company and Yield Operating LLC provided a guarantee to Yield, Inc. with respect to the 2020 Convertible Notes. In addition, Yield Operating LLC and Yield, Inc. entered into an intercompany borrowing arrangement, under which Yield Operating LLC received $281 million of the proceeds of the 2020 Convertible Notes. The intercompany note bears interest at a rate of 3.325% and matures in 2020. Yield, Inc. 2019 Convertible Senior Notes and Related Intercompany Note During the first quarter of 2014, Yield, Inc. closed on its offering of $345 million aggregate principal amount of 3.50% Convertible Senior Notes due 2019, or the 2019 Convertible Notes. The 2019 Convertible Notes were convertible, under certain circumstances, into Yield, Inc.’s Class A common stock, cash or a combination thereof at an initial conversion price of $46.55 per Class A common share, which is equivalent to an initial conversion rate of approximately 21.4822 shares of Class A common stock per $1,000 principal amount of Convertible Notes. In connection with the Recapitalization, effective May 15, 2015, the conversion rate was adjusted to 42.9644 shares of Class A common stock per $1,000 principal amount of 2019 Convertible Notes in accordance with the terms of the related indenture. The Company and Yield Operating provided a guarantee to Yield, Inc. with respect to the Convertible Notes. In addition, Yield Operating and Yield, Inc. entered into an intercompany borrowing arrangement, under which Yield Operating borrowed $337 million of the proceeds of the Convertible Notes. The intercompany note bears interest at a rate of 3.58% and matures in 2019. Yield Operating Senior Notes On August 5, 2014, NRG Yield Operating issued $500 million of senior unsecured notes, or the Senior Notes. The Senior Notes bear interest at 5.375% and mature in August 2024. Interest on the notes is payable semi-annually on February 15 and August 15 of each year, and commenced on February 15, 2015. The Senior Notes are senior unsecured obligations of Yield Operating and are guaranteed by the Company, and by certain of Yield Operating’s wholly owned current and future subsidiaries. NRG Yield LLC and NRG Yield Operating LLC Revolving Credit Facility In connection with the Yield, Inc. initial public offering in July 2013, as further described in Note 1 , Nature of Business , the Company and Yield Operating entered into a senior secured revolving credit facility, or the Yield Credit Facility, which was amended on June 26, 2015, to, among other things, increase the availability to $495 million . The Company's revolving credit facility can be used for cash or for the issuance of letters of credit. On November 3, 2015, the Company borrowed $209 million from the revolving credit facility to finance the acquisition of the November 2015 Drop Down Assets as discussed in Note 3 , Business Acquisitions . On December 14, 2015, the Company borrowed $45 million from the revolving credit facility to fund dividend payments and tax equity contributions. As of December 31, 2015 , $306 million of borrowings and $56 million of letters of credit were outstanding. Project - level Debt El Segundo Credit Agreement On August 23, 2011, NRG West Holdings LLC, or West Holdings, entered into a credit agreement with a group of lenders in respect to the El Segundo project, or the El Segundo Credit Agreement. The El Segundo Credit Agreement is comprised of a $540 million two tranche construction loan facility with additional facilities for the issuance of letters of credit or working capital loans and is secured by the assets of West Holdings. The two tranche construction loan facility consists of the $480 million Tranche A Construction Facility, or the Tranche A Facility, and the $60 million Tranche B Construction Facility, or the Tranche B Facility, both of which mature in August 2023 and convert to a term loan. On May 29, 2015, NRG West Holdings amended its financing agreement to increase borrowings under the Tranche A facility by $5 million and to reduce the related interest rate to LIBOR plus an applicable margin of 1.625% from May 29, 2015, to August 31, 2017, LIBOR plus an applicable margin of 1.75% from September 1, 2017, to August 31, 2020, and LIBOR plus 1.875% from September 1, 2020, through the maturity date; to reduce the Tranche B loan interest rate to LIBOR plus an applicable margin of 2.250% from May 29, 2015, to August 31, 2017, LIBOR plus 2.375% from September 1, 2017, to August 31, 2020, and LIBOR plus an applicable margin of 2.50% from September 1, 2020, through the maturity date and to reduce the working capital facility by $9 million . The proceeds of the increased borrowing were used to pay costs associated with the refinancing. Further, the amendment resulted in a $7 million loss on debt extinguishment. The Tranche A and Tranche B Facilities amortize based upon a predetermined schedule over the term of the loan with the balance payable at maturity. The construction loan converted to a term loan on January 28, 2014. The El Segundo Credit Agreement also provides for the issuance of letters of credit and working capital loans to support the El Segundo project's collateral needs. This includes letter of credit facilities on behalf of El Segundo of up to $90 million in support of the PPA, up to $48 million in support of the collateral agent, and a working capital facility which permits loans or the issuance of letters of credit of up to $10 million . Alta Wind Financing Arrangements On June 30, 2015, Yield Operating LLC entered into a tax equity financing arrangement through which it received $119 million in net proceeds, as described in Note 5 , Investments Accounted for by the Equity Method and Variable Interest Entities . These proceeds, as well as proceeds obtained from the June 29, 2015, Yield, Inc. common stock issuance, as described in Note 1 , Nature of Business , and the 2020 Convertible Notes issuance, as described above, were utilized to repay all of the project indebtedness associated with the Alta Wind X and Alta Wind XI wind facilities outstanding as of that date. The Company also settled interest rate swaps associated with the project level debt for the Alta Wind X and Alta Wind XI wind facilities at a value of $17 million . Avenal On March 18, 2015, Avenal, one of the Company's equity method investments, amended its credit agreement to increase its borrowings by $43 million and to reduce the related interest rate from 6 month LIBOR plus an applicable margin of 2.25% to 6 month LIBOR plus 1.75% from March 18, 2015, through March 17, 2022, 6 month LIBOR plus 2.00% from March 18, 2022, through March 17, 2027, and 6 month LIBOR plus 2.25% from March 18, 2027, through the maturity date. As a result of the credit agreement amendment, the Company received net proceeds of $20 million after fees from its 49.95% ownership in Avenal. Effective September 30, 2015, the Company increased its ownership to 50% by acquiring an additional 0.05% membership interest in Avenal. Viento On July 11, 2013, Viento entered into a credit agreement with lenders for a $200 million term loan with a maturity date of July 11, 2023 and a working capital facility in the amount of $9 million . The interest rate is 6 month LIBOR plus 2.75% until July 11, 2017 when it increases to LIBOR plus 3.00% . On July 11, 2021 it increases to LIBOR plus 3.25% through the maturity date. As of December 31, 2015 , $189 million was outstanding under the term loan, nothing was outstanding under the working capital facility, and $27 million of letters of credit were issued. Lease financing arrangements Alta Wind Holdings (Alta Wind II - V) and Alta I (operating entities) have finance lease obligations issued under lease transactions whereby the respective operating entities sold and leased back undivided interests in specific assets of the project. The sale and related lease transactions are accounted for as financing arrangements as the operating entities have continued involvement with the property. The terms and conditions of each facility lease are substantially similar. Each operating entity makes rental payments as stipulated in the facility lease agreements on a semiannual basis every June 30 and December 30 through the final maturity dates. In addition, the operating entities have a credit agreement with a group of lenders that provides for the issuance of letters of credit to support certain operating and debt service obligations. Certain O&M and rent reserve requirements are satisfied by letters of credit issued under the Yield Operating agreement. As of December 31, 2015 , $1,002 million was outstanding under the finance lease obligations, and $122 million of letters of credit were issued under the credit agreement and $19 million were issued under the Yield Credit Facility. Interest Rate Swaps — Project Financings Many of the Company's project subsidiaries entered into interest rate swaps, intended to hedge the risks associated with interest rates on non-recourse project level debt. These swaps amortize in proportion to their respective loans and are floating for fixed where the project subsidiary pays its counterparty the equivalent of a fixed interest payment on a predetermined notional value and will receive quarterly the equivalent of a floating interest payment based on the same notional value. All interest rate swap payments by the project subsidiary and its counterparty are made quarterly and the LIBOR is determined in advance of each interest period. In connection with the acquisition of the Alta Wind Portfolio, as described in Note 3 , Business Acquisitions , the Company acquired thirty-one additional interest rate swaps, thirty of which were settled during 2015 as discussed above. During 2015, the Company acquired thirty-two additional interest rate swaps in connection with the January 2015 and November 2015 drop downs, as described in Note 3 , Business Acquisitions . The following table summarizes the swaps, some of which are forward starting as indicated, related to the Company's project level debt as of December 31, 2015 . % of Principal Fixed Interest Rate Floating Interest Rate Notional Amount at December 31, 2015 Effective Date Maturity Date Alpine 85 % 2.744 % 3-Month LIBOR $ 122 various December 31, 2029 Alpine 85 % 2.421 % 3-Month LIBOR 9 June 24, 2014 June 30, 2025 Avra Valley 85 % 2.333 % 3-Month LIBOR 51 November 30, 2012 November 30, 2030 AWAM 100 % 2.47 % 3-Month LIBOR 19 May 22, 2013 May 15, 2031 Blythe 75 % 3.563 % 3-Month LIBOR 16 June 25, 2010 June 25, 2028 Borrego 75 % 1.125 % 3-Month LIBOR 9 April 3, 2013 June 30, 2020 El Segundo 75 % 2.417 % 3-Month LIBOR 358 November 30, 2011 August 31, 2023 Kansas South 75 % 2.368 % 6-Month LIBOR 25 June 28, 2013 December 31, 2030 Laredo Ridge 75 % 2.31 % 3-Month LIBOR 83 March 31, 2011 March 31, 2026 Marsh Landing 75 % 3.244 % 3-Month LIBOR 387 June 28, 2013 June 30, 2023 Roadrunner 75 % 4.313 % 3-Month LIBOR 30 September 30, 2011 December 31, 2029 South Trent 75 % 3.265 % 3-Month LIBOR 46 June 15, 2010 June 14, 2020 South Trent 75 % 4.95 % 3-Month LIBOR 21 June 30, 2020 June 14, 2028 Tapestry 75 % 2.21 % 3-Month LIBOR 163 December 30, 2011 December 21, 2021 Tapestry 50 % 3.57 % 3-Month LIBOR 60 December 21, 2021 December 21, 2029 Viento 90 % various 6-Month LIBOR 235 various various Walnut Creek Energy 75 % various 3-Month LIBOR 311 June 28, 2013 May 31, 2023 WCEP Holdings 90 % 4.003 % 3-Month LIBOR 46 June 28, 2013 May 31, 2023 Total $ 1,991 Annual Maturities Annual payments based on the maturities of the Company's debt, for the years ending after December 31, 2015 are as follows: (In millions) 2016 $ 241 2017 252 2018 260 2019 919 2020 607 Thereafter 2,606 Total $ 4,885

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2015
Segment Reporting	Segment Reporting The Company’s segment structure reflects how management currently operates and allocates resources. The Company's businesses are primarily segregated based on conventional power generation, renewable businesses which consist of solar and wind, and the thermal and chilled water business. The Corporate segment reflects the Company's corporate costs. The Company's chief operating decision maker, its Chief Executive Officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, and CAFD, as well as net income (loss). The Company generated more than 10% of its revenues from the following customers for the years ended December 31, 2015 , 2014 and 2013 : 2015 2014 2013 Customer Conventional (%) Renewables (%) Conventional (%) Renewables (%) Conventional (%) Renewables (%) SCE 25% 18% 26% 9% 14% 4% PG&E 14% 3% 16% 4% 21% 7% Year ended December 31, 2015 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 336 $ 359 $ 174 $ — $ 869 Cost of operations 59 127 126 — 312 Depreciation and amortization 81 165 19 — 265 General and administrative — — — 10 10 Acquisition-related transaction and integration costs — — — 3 3 Operating income (loss) 196 67 29 (13 ) 279 Equity in earnings of unconsolidated affiliates 14 21 — — 35 Other income, net 1 1 — — 2 Loss on extinguishment of debt (7 ) (2 ) — — (9 ) Interest expense (48 ) (122 ) (7 ) (52 ) (229 ) Net Income (Loss) $ 156 $ (35 ) $ 22 $ (65 ) $ 78 Balance Sheet Equity investment in affiliates $ 110 $ 688 $ — $ — $ 798 Capital expenditures (a) 4 6 20 — 30 Total Assets $ 2,102 $ 5,056 $ 428 $ 22 $ 7,608 (a) Includes accruals. Year ended December 31, 2014 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 317 $ 234 $ 195 $ — $ 746 Cost of operations 55 72 139 — 266 Depreciation and amortization 82 102 18 — 202 General and administrative — — — 8 8 Acquisition-related transaction and integration costs — — — 4 4 Operating income (loss) 180 60 38 (12 ) 266 Equity in earnings of unconsolidated affiliates 14 11 — — 25 Other income, net — 2 — 1 3 Interest expense (53 ) (101 ) (7 ) (25 ) (186 ) Net Income (Loss) $ 141 $ (28 ) $ 31 $ (36 ) $ 108 Balance Sheet Equity investments in affiliates $ 114 $ 296 $ — $ — $ 410 Capital expenditures (a) 6 — 7 — 13 Total Assets $ 2,169 $ 4,790 $ 436 $ 332 $ 7,727 (a) Includes accruals. Capital expenditures for Renewables include a sales tax refund received by Alpine in the first quarter of 2014. Year ended December 31, 2013 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 138 $ 97 $ 152 $ — $ 387 Cost of operations 23 15 110 — 148 Depreciation and amortization 20 39 15 — 74 General and administrative — — — 7 7 Operating income (loss) 95 43 27 (7 ) 158 Equity in earnings of unconsolidated affiliates 16 6 — — 22 Other income, net 1 2 — — 3 Interest expense (25 ) (20 ) (7 ) — (52 ) Income (loss) before income taxes 87 31 20 (7 ) 131 Income tax benefit — — — (3 ) (3 ) Net Income (Loss) $ 87 $ 31 $ 20 $ (4 ) $ 134

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transaction [Line Items]
Related Party Transactions Disclosure	Related Party Transactions In addition to the transactions and relationships described elsewhere in the notes to the consolidated financial statements, certain subsidiaries of NRG provide services to the Company's project entities. Amounts due to NRG subsidiaries are recorded as accounts payable — affiliate and amounts due to the Company from NRG subsidiaries are recorded as accounts receivable — affiliate in the Company's balance sheet. Power Hedge Contracts by and between Renewable Entities and NRG Texas Power LLC Elbow Creek and Goat Wind, the Company's subsidiaries from Renewable segment, entered into power hedge contracts with NRG Texas Power LLC and generated $16 million , $12 million and $7 million during the years ended December 31, 2015, 2014 and 2013, respectively. Included in the revenues for the years ended December 31, 2015, and 2014, are unrealized losses and gains, respectively, on forward contracts with NRG Texas Power LLC hedging the sale of power from the Elbow Creek wind facility extending through the end of 2015, as further described in Note 7 , Accounting for Derivative Instruments and Hedging Activities . Operations and Maintenance Services (O&M) Agreements by and between Thermal Entities and NRG On October 1, 2014, NRG entered into Plant O&M Services Agreements with certain wholly-owned subsidiaries of the Company. NRG provides necessary and appropriate services to operate and maintain the subsidiaries' plant operations, businesses and thermal facilities. NRG is to be reimbursed for the provided services, as well as for all reasonable and related expenses and expenditures, and payments to third parties for services and materials rendered to or on behalf of the parties to the agreements. NRG is not entitled to any management fee or mark-up under the agreements. Prior to October 1, 2014, NRG provided the same services to Thermal entities on an informal basis. For the years ended December 31, 2015 , 2014 , and 2013 , total fees incurred under the agreements were $29 million , $27 million , and $24 million , respectively. There was a balance of $29 million and $22 million due to NRG in accounts payable — affiliate as of December 31, 2015 , and 2014 , respectively. Power Sales and Services Agreement by and between NRG Energy Center Dover LLC and NRG NRG Energy Center Dover LLC, or NRG Dover, a subsidiary of the Company is party to a Power Sales and Services Agreement with NRG Power Marketing LLC, or NRG Power Marketing, a wholly-owned subsidiary of NRG. The agreement is automatically renewed on a month-to-month basis unless terminated by either party upon at least 30 day written notice. Under the agreement, NRG Power Marketing has the exclusive right to (i) manage, market and sell power, (ii) procure fuel and fuel transportation for operation of the Dover generating facility, to include for purposes other than generating power, (iii) procure transmission services required for the sale of power, and (iv) procure and market emissions credits for operation of the Dover generating facility. In addition, NRG Power Marketing has the exclusive right and obligation to direct the output from the generating facility, in accordance with and to meet the terms of any power sales contracts executed against the power generation of the Dover facility. Under the agreement, NRG Power Marketing pays NRG Dover gross receipts generated through sales, less costs incurred by NRG Power Marketing related to providing such services as transmission and delivery costs, as well as fuel costs. In July 2013, the originally coal-fueled plant was converted to a natural gas facility. For the years ended December 31, 2015 , 2014 and 2013 , NRG Dover purchased approximately $5 million , $10 million and $5 million , respectively, of natural gas from NRG Power Marketing. Energy Marketing Services Agreement by and between NRG Energy Center Minneapolis LLC and NRG NRG Energy Center Minneapolis LLC, or NRG Minneapolis, a subsidiary of the Company is party to an Energy Marketing Services Agreement with NRG Power Marketing, a wholly-owned subsidiary of NRG. The agreement commenced in August 2014 and is automatically renewed annually unless terminated by either party upon at least 90 day written notice prior to the end of any term. Under the agreement, NRG Power Marketing will procure fuel and fuel transportation for the operation of the Minneapolis generating facility. For the years ended December 31, 2015 and 2014 , NRG Minneapolis purchased approximately $8 million and $2 million , respectively, of natural gas from NRG Power Marketing. O&M Services Agreements by and between GenConn and NRG GenConn incurs fees under two O&M agreements with wholly-owned subsidiaries of NRG. The fees incurred under the agreements were $4 million , $6 million and $5 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. O&M Services Agreements by and between El Segundo and NRG El Segundo Operations El Segundo incurs fees under an O&M agreement with NRG El Segundo Operations, Inc., a wholly-owned subsidiary of NRG. Under the O&M agreement, NRG El Segundo Operations, Inc. manages, operates and maintains the El Segundo facility for an initial term of ten years following the commercial operations date. For the years ended December 31, 2015 , and 2014 , the costs incurred under the agreement were approximately $4 million . The Company incurred $5 million in costs under the agreement for the year ended December 31, 2013. There was a balance of $1 million due to NRG El Segundo in accounts payable — affiliate as of December 31, 2015 , and 2014 . Energy Marketing Services Agreement with NRG Power Marketing LLC El Segundo was a party to an energy marketing services agreement with NRG Power Marketing LLC to procure fuel and market capacity, energy and ancillary output of the facility prior to the start of the PPA with Southern California Edison. The agreement began in April 2013 and ended at the commercial operations date in August 2013. For the years ended December 31, 2014 , and 2013 , the Company recorded approximately, $1 million and $12 million , respectively, in costs related to this agreement, of which $9 million was recorded to property, plant and equipment in 2013 , with the remaining amount recorded to cost of operations in the Company's statement of operations. There were no costs incurred during the year ended December 31, 2015 . Administrative Services Agreement by and between Marsh Landing and GenOn Energy Services, LLC Marsh Landing is a party to an administrative services agreement with GenOn Energy Services, LLC, a wholly owned subsidiary of NRG, which provides with processing and paying invoices services on behalf of Marsh Landing. Marsh Landing reimburses GenOn Energy Services, LLC for the amounts paid by it. The Company reimbursed costs under this agreement of approximately $13 million for the years ended December 31, 2015, and 2014, respectively, and $36 million for the year ended December 31, 2013. For the years ended December 31, 2014 and 2013 , $2 million and $29 million , respectively, were capitalized. There was a balance of $6 million and $4 million due to GenOn Energy Services, LLC in accounts payable — affiliate as of December 31, 2015 , and 2014 , respectively. Administrative Services Agreement by and between CVSR and NRG CVSR is a party to an administrative services agreement with NRG Energy Services LLC, a wholly-owned subsidiary of NRG, which provides O&M services on behalf of CVSR. CVSR reimburses NRG Energy Services LLC for the amounts paid by it. CVSR reimbursed costs under this agreement of $5 million and $7 million for the years ended December 31, 2015 , and 2014 , respectively. Management Services Agreement by and between the Company and NRG NRG provides the Company with various operation, management, and administrative services, which include human resources, accounting, tax, legal, information systems, treasury, and risk management, as set forth in the Management Services Agreement. As of December 31, 2015 , the base management fee was approximately $7 million per year, subject to an inflation- based adjustment annually, at an inflation factor based on the year-over-year U.S. consumer price index. The fee is also subject to adjustments following the consummation of future acquisitions and as a result of a change in the scope of services provided under the Management Services Agreement. During the year ended December 31, 2015 , the fee was increased by approximately $1 million per year primarily in connection with the acquisition of the January 2015 and November 2015 Drop Down Assets. Costs incurred under this agreement were approximately $8 million and $6 million for the years ended December 31, 2015 , and 2014 and $3 million for the period from July 23, 2013 through December 31, 2013. These costs included certain direct expenses incurred by NRG on behalf of the Company in addition to the base management fee, none of which was payable as of December 31, 2015 . Administrative Services Agreements by and between Wind TE Holdco LLC and NRG Certain subsidiaries of NRG have entered into agreements with the Company's project entities to provide operation and maintenance services for the balance of the plants not covered by turbine supplier's maintenance and service agreements for the postwarranty period. The agreements have various terms with provisions for extension until terminated. For the years ended December 31, 2015 , and 2014 , the costs incurred under the agreements were $5 million and $3 million , respectively. Certain subsidiaries of NRG provide support services to NRG Wind TE Holdco LLC project entities pursuant to various support services agreements. The agreements provide for administrative and support services and reimbursements of certain insurance, consultant, and credit costs. For the years ended December 31, 2015 , and 2014 , the costs incurred under the agreements were $3 million and $1 million , respectively. Accounts Payable to NRG Repowering Holdings LLC During 2013, NRG Repowering Holdings, LLC, a wholly-owned subsidiary of NRG, made payments to BA Leasing BSC, LLC, or BA Leasing, of $18 million , which were expected to be repaid with the proceeds of the cash grant received by BA Leasing with respect to the PFMG DG Solar Projects, in connection with a sale-leaseback arrangement between the PFMG DG Solar Projects and BA Leasing. As of December 31, 2013 , PFMG DG Solar Projects had a corresponding receivable for the reimbursement of the cash grant from BA Leasing and related payable to NRG Repowering Holdings, LLC. In the first quarter of 2014, the PFMG DG Solar Projects received $11 million from BA Leasing and reduced the remaining receivable with an offset to the deferred liability recorded in connection with the sale - leaseback arrangement. The PFMG DG Solar Projects utilized the $11 million to repay NRG Repowering Holdings LLC. There was a balance of $7 million in accounts payable - affiliate as of December 31, 2015 , and 2014 .

Condensed Consolidating Financi

Condensed Consolidating Financial Information Condensed Consolidating Financial Information	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Leases [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan21

Condensed Consolidating Financial Information CP Income Statement CP Income Statement (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan22

Condensed Consolidating Financial Information CP Comprehensive Income Condensed Consolidating Financial Information CP Comprehensive Income (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Statement of Comprehensive Income [Table Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan23

Condensed Consolidating Financial Information CP Balance Sheet Condensed Consolidating CP Balance Sheet (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan24

Condensed Consolidating Financial Information CP Cash Flows Condensed Consolidating CP Cash Flows (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan25

Condensed Consolidating Financial Information PP Income Statement Condensed Consolidating PP Income Statement (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan26

Condensed Consolidating Financial Information PP Comprehensive Income Condensed Consolidating PP Comprehensive Income (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan27

Condensed Consolidating Financial Information PP Balance Sheet Condensed Consolidating PP Balance Sheet (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan28

Condensed Consolidating Financial Information PP Cash Flows Condensed Consolidating PP Cash Flows (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan29

Condensed Consolidating Financial Information PP2 Cash Flows (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Cash Flows [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan30

Condensed Consolidating Financial Information PP2 Comprehensive Income (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan31

Condensed Consolidating Financial Information PP2 Income Statement (Notes)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Financial Information As of December 31, 2015 , Yield Operating LLC had outstanding $500 million of Senior Notes as shown in Note 9 , Long-term Debt . These Senior Notes are guaranteed by the Company, as well as certain of the Company's subsidiaries, or guarantor subsidiaries. These guarantees are both joint and several. The non-guarantor subsidiaries include the rest of the Company's subsidiaries, including the ones that are subject to project financing. Unless otherwise noted below, each of the following guarantor subsidiaries fully and unconditionally guaranteed the Senior Notes as of December 31, 2015 : NRG Yield LLC Alta Wind 1-5 Holding Company, LLC Alta Wind Company, LLC NRG Energy Center Omaha Holdings LLC NRG Energy Center Omaha LLC NYLD Fuel Cell Holdings LLC UB Fuel Cell, LLC NRG South Trent Holdings LLC NRG Yield DGPV Holding LLC NRG Yield RPV Holding LLC Yield Operating LLC conducts much of its business through and derives much of its income from its subsidiaries. Therefore, its ability to make required payments with respect to its indebtedness and other obligations depends on the financial results and condition of its subsidiaries and Yield Operating LLC's ability to receive funds from its subsidiaries. There are no restrictions on the ability of any of the guarantor subsidiaries to transfer funds to Yield Operating LLC. However, there may be restrictions for certain non-guarantor subsidiaries. The following condensed consolidating financial information presents the financial information of Yield LLC, Yield Operating LLC, the issuer of the Senior Notes, the guarantor subsidiaries and the non-guarantor subsidiaries in accordance with Rule 3-10 under the SEC Regulation S-X. The financial information may not necessarily be indicative of results of operations or financial position had the guarantor subsidiaries or non-guarantor subsidiaries operated as independent entities. In this presentation, Yield LLC consists of parent company operations. Guarantor subsidiaries and non-guarantor subsidiaries of Yield LLC are reported on an equity basis. For companies acquired, the fair values of the assets and liabilities acquired have been presented on a push-down accounting basis. As described in Note 3 , Business Acquisitions , the Company has completed three acquisitions of Drop Down Assets from NRG during the years ended December 31, 2015 , and December 31, 2014 . The guidance requires retrospective combination of the entities for all periods presented as if the combination has been in effect since the inception of common control. Accordingly, the Company prepared its condensed consolidating financial statements to reflect the transfers as if they had taken place from the beginning of the financial statements period, or from the date the entities were under common control (if later than the beginning of the financial statements period), which was May 13, 2013 for Kansas South, March 28, 2013 for TA High Desert, and April 1, 2014 for the January 2015 Drop Down Assets and the majority of the November 2015 Drop Down Assets, and which represent the dates these entities were acquired by NRG. With respect to the November 2015 Drop Down Asset acquisition, the Company has recorded all minority interests in NRG Wind TE Holdco as noncontrolling interest in the Consolidated Financial Statements for all periods presented. In addition, the condensed parent company financial statements are provided in accordance with Rule 12-04, Schedule I of Regulation S-X, as the restricted net assets of Yield LLC’s subsidiaries exceed 25 percent of the consolidated net assets of Yield LLC. These statements should be read in conjunction with the consolidated statements and notes thereto of NRG Yield LLC. For a discussion of Yield LLC's long-term debt, see Note 9 , Long-term Debt . For a discussion of Yield LLC's commitments and contingencies, see Note 14 , Commitments and Contingencies . For a discussion of Yield LLC's distributions to Yield, Inc. and NRG Energy, see Note 10 , Members' Equity . For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes Effective Tax Rate The income tax provision consisted of the following amounts: Year Ended December 31, 2013 2013 (In millions, except percentages) Current U.S. Federal $ — Total — current — Deferred U.S. Federal (3 ) State — Total — deferred (3 ) Total income tax benefit $ (3 ) Effective tax rate (2.1 )% A reconciliation of the U.S. federal statutory rate of 35% to the Company's effective rate is as follows: Year Ended December 31, 2013 (In millions, except percentages) Income Before Income Taxes $ 131 Tax at 35% 46 Impact of change in tax status as of July 22, 2013 (49 ) Income tax benefit $ (3 ) Effective income tax rate (2.1 )% On July 22, 2013, Yield, Inc. acquired a controlling interest in the Company. As of that date, the Company is a disregarded entity of a partnership for federal and state income tax purposes; therefore, taxes recorded prior to the acquisition were reversed. Income tax expense represents proforma income tax expense for the Company for the period from January 1, 2013 to July 22, 2013.

Unaudited Quarterly Financial D

Unaudited Quarterly Financial Data (Notes)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	Unaudited Quarterly Data Refer to Note 2 , Summary of Significant Accounting Policies and Note 3 , Business Acquisitions for a description of the effect of unusual or infrequently occurring events during the quarterly periods. Summarized unaudited quarterly financial data is as follows: Quarter Ended December 31, September 30, (a) June 30, (a) March 31, (a) 2015 (In millions) Operating Revenues $ 209 $ 225 $ 235 $ 200 (As previously reported) Operating Revenues N/A 209 217 180 Change N/A 16 18 20 Operating Income 67 81 85 46 (As previously reported) Operating Income N/A 87 87 48 Change N/A (6 ) (2 ) (2 ) Net Income (Loss) 21 36 44 (23 ) (As previously reported) Net Income (Loss) N/A 46 47 (19 ) Change N/A $ (10 ) $ (3 ) $ (4 ) (a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets. Quarter Ended December 31, (a) September 30, (a) June 30, (a) March 31, (a) 2014 (In millions) Operating Revenues $ 212 $ 199 $ 194 $ 141 (As previously reported) Operating Revenues 192 184 173 140 Change 20 15 21 1 Operating Income 70 85 60 51 (As previously reported) Operating Income 69 85 64 54 Change 1 — (4 ) (3 ) Net Income (Loss) (6 ) 48 39 27 (As previously reported) Net Income (Loss) (5 ) 51 45 30 Change $ (1 ) $ (3 ) $ (6 ) $ (3 )

Commitments and Contingencies (

Commitments and Contingencies (Notes)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingencies Operating Lease Commitments The Company leases certain facilities and equipment under operating leases, some of which include escalation clauses, expiring on various dates through 2048. The effects of these scheduled rent increases, leasehold incentives, and rent concessions are recognized on a straight-line basis over the lease term unless another systematic and rational allocation basis is more representative of the time pattern in which the leased property is physically employed. Lease expense under operating leases was $9 million , $8 million and $2 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. Future minimum lease commitments under operating leases for the years ending after December 31, 2015 , are as follows: Period (In millions) 2016 $ 12 2017 9 2018 9 2019 9 2020 8 Thereafter 135 Total $ 182 Gas and Transportation Commitments The Company has entered into contractual arrangements to procure power, fuel and associated transportation services. For the years ended December 31, 2015 , 2014 and 2013 , the Company purchased $40 million , $55 million , and $40 million , respectively, under such arrangements. As further described in Note 13 Related Party Transactions , these balances include intercompany sales in the amount of $13 million , $12 million and $7 million , respectively. As of December 31, 2015 , the Company's commitments under such outstanding agreements are estimated as follows: Period (In millions) 2016 $ 12 2017 6 2018 3 2019 3 2020 3 Thereafter 21 Total $ 48 Contingencies In the normal course of business, the Company is subject to various claims and litigations. Management expects that these various litigation items will not have a material adverse effect on the Company's results of operations or financial position.

Summary of Significant Accoun35

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]	Guarantees The Company enters into various contracts that include indemnification and guarantee provisions as a routine part of its business activities. Examples of these contracts include EPC agreements, operation and maintenance agreements, service agreements, commercial sales arrangements and other types of contractual agreements with vendors and other third parties, as well as affiliates. These contracts generally indemnify the counterparty for tax, environmental liability, litigation and other matters, as well as breaches of representations, warranties and covenants set forth in these agreements. Because many of the guarantees and indemnities the Company issues to third parties and affiliates do not limit the amount or duration of its obligations to perform under them, there exists a risk that the Company may have obligations in excess of the amounts agreed upon in the contracts mentioned above. For those guarantees and indemnities that do not limit the liability exposure, it may not be able to estimate what the liability would be, until a claim is made for payment or performance, due to the contingent nature of these contracts.
Equity Method Investments, Policy [Policy Text Block]	Investments Accounted for by the Equity Method The Company has investments in nine energy projects accounted for by the equity method, three of which are VIEs, where the Company is not a primary beneficiary, and two of which are owned by a subsidiary that is consolidated as a VIE, as described in Note 5 , Investments Accounted for by the Equity Method and Variable Interest Entities . The equity method of accounting is applied to these investments in affiliates because the ownership structure prevents the Company from exercising a controlling influence over the operating and financial policies of the projects. Under this method, equity in pre-tax income or losses of the investments is reflected as equity in earnings of unconsolidated affiliates.
Derivatives, Policy [Policy Text Block]	Derivative Financial Instruments The Company accounts for derivative financial instruments under ASC 815, Derivatives and Hedging , or ASC 815, which requires the Company to record all derivatives on the balance sheet at fair value unless they qualify for a NPNS exception. Changes in the fair value of non-hedge derivatives are immediately recognized in earnings. Changes in the fair value of derivatives accounted for as hedges, if elected for hedge accounting, are either: • Recognized in earnings as an offset to the changes in the fair value of the related hedged assets, liabilities and firm commitments; or • Deferred and recorded as a component of accumulated OCI until the hedged transactions occur and are recognized in earnings. The Company's primary derivative instruments are power sales contracts used to mitigate variability in earnings due to fluctuations in market prices, fuels purchase contracts used to control customer reimbursable fuel cost, and interest rate instruments used to mitigate variability in earnings due to fluctuations in interest rates. On an ongoing basis, the Company assesses the effectiveness of all derivatives that are designated as hedges for accounting purposes in order to determine that each derivative continues to be highly effective in offsetting changes in fair values or cash flows of hedged items. Internal analyses that measure the statistical correlation between the derivative and the associated hedged item determine the effectiveness of such a contract designated as a hedge. If it is determined that the derivative instrument is not highly effective as a hedge, hedge accounting will be discontinued prospectively. In this case, the gain or loss previously deferred in accumulated OCI would be frozen until the underlying hedged item is delivered unless the transaction being hedged is no longer probable of occurring in which case the amount in OCI would be immediately reclassified into earnings. If the derivative instrument is terminated, the effective portion of this derivative deferred in accumulated OCI will be frozen until the underlying hedged item is delivered. Revenues and expenses on contracts that qualify for the NPNS exception are recognized when the underlying physical transaction is delivered. While these contracts are considered derivative financial instruments under ASC 815, they are not recorded at fair value, but on an accrual basis of accounting. If it is determined that a transaction designated as NPNS no longer meets the scope exception, the fair value of the related contract is recorded on the balance sheet and immediately recognized through earnings.
Debt, Policy [Policy Text Block]	Debt Issuance Costs Debt issuance costs are capitalized and amortized as interest expense on a basis which approximates the effective interest method over the term of the related debt. As discussed below, as of December 31, 2015, the Company adopted ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , and reclassified debt issuance costs to be presented as a direct deduction from the carrying amount of the related debt in both the current and prior periods.
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Intangible Assets Intangible assets represent contractual rights held by the Company. The Company recognizes specifically identifiable intangible assets including customer contracts, customer relationships, power purchase agreements and development rights when specific rights and contracts are acquired. These intangible assets are amortized primarily on a straight-line basis.
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation and Principles of Consolidation The Company's consolidated and combined financial statements have been prepared in accordance with U.S. GAAP. The FASB ASC is the source of authoritative U.S. GAAP to be applied by nongovernmental entities. In addition, the rules and interpretative releases of the SEC under authority of federal securities laws are also sources of authoritative U.S. GAAP for SEC registrants.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of accounts receivable, notes receivable and derivative instruments, which are concentrated within entities engaged in the energy and financial industry. These industry concentrations may impact the overall exposure to credit risk, either positively or negatively, in that the customers may be similarly affected by changes in economic, industry or other conditions. In addition, many of the Company's projects have only one customer. However, the Company believes that the credit risk posed by industry concentration is offset by the diversification and creditworthiness of its customer base. See Note 6 , Fair Value of Financial Instruments , for a further discussion of derivative concentrations and Note 11 , Segment Reporting for concentration of counterparties.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments The carrying amount of cash and cash equivalents, restricted cash, accounts receivable, accounts payable, intercompany accounts payable and receivable, and accrued expenses and other liabilities approximate fair value because of the short-term maturity of these instruments. See Note 6 , Fair Value of Financial Instruments , for a further discussion of fair value of financial instruments.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Asset Impairments Long-lived assets that are held and used are reviewed for impairment whenever events or changes in circumstances indicate carrying values may not be recoverable. Such reviews are performed in accordance with ASC 360. An impairment loss is recognized if the total future estimated undiscounted cash flows expected from an asset are less than its carrying value. An impairment charge is measured by the difference between an asset's carrying amount and fair value with the difference recorded in operating costs and expenses in the statements of operations. Fair values are determined by a variety of valuation methods, including appraisals, sales prices of similar assets and present value techniques. Investments accounted for by the equity method are reviewed for impairment in accordance with ASC 323, Investments-Equity Method and Joint Ventures , which requires that a loss in value of an investment that is other than a temporary decline should be recognized. The Company identifies and measures losses in the value of equity method investments based upon a comparison of fair value to carrying value.
Asset Retirement Obligations, Policy [Policy Text Block]	Asset Retirement Obligations Asset retirement obligations, or AROs, are accounted for in accordance with ASC 410-20, Asset Retirement Obligations, or ASC 410-20. Retirement obligations associated with long-lived assets included within the scope of ASC 410-20 are those for which a legal obligation exists under enacted laws, statutes, and written or oral contracts, including obligations arising under the doctrine of promissory estoppel, and for which the timing and/or method of settlement may be conditional on a future event. ASC 410-20 requires an entity to recognize the fair value of a liability for an ARO in the period in which it is incurred and a reasonable estimate of fair value can be made. Upon initial recognition of a liability for an ARO, the asset retirement cost is capitalized by increasing the carrying amount of the related long-lived asset by the same amount. Over time, the liability is accreted to its future value, while the capitalized cost is depreciated over the useful life of the related asset. The Company's asset retirement obligations were $39 million and $29 million as of December 31, 2015 , and 2014 , respectively. The Company records AROs as part of other non-current liabilities on its balance sheet.
Consolidation, Policy [Policy Text Block]	The consolidated and combined financial statements include the Company's accounts and operations and those of its subsidiaries in which it has a controlling interest. All significant intercompany transactions and balances have been eliminated in consolidation. The usual condition for a controlling financial interest is ownership of a majority of the voting interests of an entity. However, a controlling financial interest may also exist through arrangements that do not involve controlling voting interests. As such, the Company applies the guidance of ASC 810, Consolidations, or ASC 810, to determine when an entity that is insufficiently capitalized or not controlled through its voting interests, referred to as a variable interest entity, or VIE, should be consolidated.
Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents Cash and cash equivalents include highly liquid investments with an original maturity of three months or less at the time of purchase. Cash and cash equivalents held at project subsidiaries was $93 million and $74 million as of December 31, 2015 , and 2014 , respectively.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted Cash Restricted cash consists primarily of funds held to satisfy the requirements of certain debt agreements and funds held within the Company's projects that are restricted in their use. Of these funds as of December 31, 2015, approximately $2 million is designated for current debt service payments, $7 million is designated to fund operating expenses and $2 million is designated for distributions to the Company, with the remaining $37 million restricted for reserves including debt service, performance obligations and other reserves as well as capital expenditures.
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Trade Receivables and Allowance for Doubtful Accounts Trade receivables are reported on the balance sheet at the invoiced amount adjusted for any write-offs and the allowance for doubtful accounts. The allowance for doubtful accounts is reviewed periodically based on amounts past due and significance. The allowance for doubtful accounts was immaterial as of December 31, 2015 , and 2014 . Notes Receivable Notes receivable consists of receivables related to the financing of required network upgrades. The notes issued with respect to network upgrades will be repaid within a 5 year period following the date each facility reaches commercial operations.
Inventory, Policy [Policy Text Block]	Inventory Inventory consists principally of spare parts and fuel oil and is valued at the weighted average cost, unless evidence indicates that the weighted average cost will be recovered with a normal profit in the ordinary course of business. The Company removes fuel inventories as they are used in the production of steam, chilled water or electricity. Spare parts inventory are removed when they are used for repairs, maintenance or capital projects.
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment Property, plant and equipment are stated at cost or, in the case of business acquisitions, fair value; however impairment adjustments are recorded whenever events or changes in circumstances indicate that their carrying values may not be recoverable. See Note 3 , Business Acquisitions , for more information on acquired property, plant and equipment. Significant additions or improvements extending asset lives are capitalized as incurred, while repairs and maintenance that do not improve or extend the life of the respective asset are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated useful lives. Certain assets and their related accumulated depreciation amounts are adjusted for asset retirements and disposals with the resulting gain or loss included in cost of operations in the consolidated statements of operations. Additionally, the Company reduces the book value of the property, plant and equipment of its eligible renewable energy projects for any cash grants that are submitted to the U.S. Treasury Department when the receivable is recorded for the net realizable amount. A non-cash dividend to parent for the deferred tax asset is recorded with a corresponding reduction to the book value of the property, plant and equipment.
Interest Capitalization, Policy [Policy Text Block]	Capitalized Interest Interest incurred on funds borrowed to finance capital projects is capitalized, until the project under construction is ready for its intended use. The amount of interest capitalized for the year ended December 31, 2013 , was $18 million . The Company recorded less than $1 million of capitalized interest during the years ended December 31, 2015 , and 2014 . When a project is available for operations, capitalized interest is reclassified to property, plant and equipment and depreciated on a straight-line basis over the estimated useful life of the project's related assets.
Income Tax, Policy [Policy Text Block]	Income Taxes Subsequent to the date the Yield Assets were acquired and the Yield, Inc. initial public offering occurred, the Company is a disregarded entity of a partnership for federal and state income tax purposes. Therefore, federal and state income taxes are assessed at the partner level. Accordingly, no provision has been made for federal or state income taxes in the accompanying financial statements. For all periods prior to the Yield, Inc. public offering, federal and state income taxes represent proforma income taxes.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition Thermal Revenues Steam and chilled water revenue is recognized based on customer usage as determined by meter readings taken at month-end. Some locations read customer meters throughout the month, and recognize estimated revenue for the period between meter read date and month-end. The Thermal Business subsidiaries collect and remit state and local taxes associated with sales to their customers, as required by governmental authorities. These taxes are presented on a net basis in the income statement. Power Purchase Agreements, or PPAs The majority of the Company’s revenues are obtained through PPAs or other contractual agreements. In order to determine lease classification as operating, the Company evaluates the terms of the PPA to determine if the lease includes any of the following provisions which would indicate capital lease treatment: • Transfers the ownership of the generating facility, • Bargain purchase option at the end of the term of the lease, • Lease term is greater than 75% of the economic life of the generating facility, or • Present value of minimum lease payments exceeds 90% of the fair value of the generating facility at inception of the lease In considering the above it was determined that all of Company’s PPAs are operating leases. ASC 840 requires the minimum lease payments received to be amortized over the term of the lease and contingent rentals are recorded when the achievement of the contingency becomes probable. Judgment is required by management in determining the economic life of each generating facility, in evaluating whether certain lease provisions constitute minimum payments or represent contingent rent and other factors in determining whether a contract contains a lease and whether the lease is an operating lease or capital lease. Certain of these leases have no minimum lease payments and all of the rental income under these leases is recorded as contingent rent on an actual basis when the electricity is delivered. The contingent rental income recognized in the years ended December 31, 2015 , 2014 and 2013 was $332 million , $212 million and $88 million , respectively.
Lease, Policy [Policy Text Block]	Sale Leaseback Arrangements The Company is party to sale-leaseback arrangements that provide for the sale of certain assets to a third party and simultaneous leaseback to the Company. In accordance with ASC 840-40, Sale-Leaseback Transactions , if the seller-lessee retains, through the leaseback, substantially all of the benefits and risks incident to the ownership of the property sold, the sale-leaseback transaction is accounted for as a financing arrangement. An example of this type of continuing involvement would include an option to repurchase the assets or the buyer-lessor having the option to sell the assets back to the Company. This provision is included in most of the Company’s sale-leaseback arrangements. As such, the Company accounts for these arrangements as financings. Under the financing method, the Company does not recognize as income any of the sale proceeds received from the lessor that contractually constitutes payment to acquire the assets subject to these arrangements. Instead, the sale proceeds received are accounted for as financing obligations and leaseback payments made by the Company are allocated between interest expense and a reduction to the financing obligation. Interest on the financing obligation is calculated using the Company’s incremental borrowing rate at the inception of the arrangement on the outstanding financing obligation. Judgment is required to determine the appropriate borrowing rate for the arrangement and in determining any gain or loss on the transaction that would be recorded either at the end of or over the lease term.
Business Combinations Policy [Policy Text Block]	Business Combinations The Company accounts for its business combinations in accordance with ASC 805, Business Combinations, or ASC 805. ASC 805 requires an acquirer to recognize and measure in its financial statements the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest in the acquiree at fair value at the acquisition date. It also recognizes and measures the goodwill acquired or a gain from a bargain purchase in the business combination and determines what information to disclose to enable users of an entity's financial statements to evaluate the nature and financial effects of the business combination. In addition, transaction costs are expensed as incurred.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions impact the reported amount of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. They also impact the reported amount of net earnings during the reporting period. Actual results could be different from these estimates. In recording transactions and balances resulting from business operations, the Company uses estimates based on the best information available. Estimates are used for such items as plant depreciable lives, uncollectible accounts, environmental liabilities, acquisition accounting and legal costs incurred in connection with recorded loss contingencies, among others. As better information becomes available or actual amounts are determinable, the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates.
Tax Equity Arrangements, Policy [Policy Text Block]	Tax Equity Arrangements Certain portions of the Company’s noncontrolling interests in subsidiaries represent third-party interests in the net assets under certain tax equity arrangements, which are consolidated by the Company, that have been entered into to finance the cost of wind facilities eligible for certain tax credits. Additionally, certain portions of the Company’s investments in unconsolidated affiliates reflect the Company’s interests in tax equity arrangements, that are not consolidated by the Company, that have been entered into to finance the cost of distributed solar energy systems under operating leases or PPAs eligible for certain tax credits. The Company has determined that the provisions in the contractual agreements of these structures represent substantive profit sharing arrangements. Further, the Company has determined that the appropriate methodology for calculating the noncontrolling interest and investment in unconsolidated affiliates that reflects the substantive profit sharing arrangements is a balance sheet approach utilizing the hypothetical liquidation at book value, or HLBV, method. Under the HLBV method, the amounts reported as noncontrolling interests and investment in unconsolidated affiliates represent the amounts the investors to the tax equity arrangements would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreements, assuming the net assets of the funding structures were liquidated at their recorded amounts determined in accordance with U.S. GAAP. The investors’ interests in the results of operations of the funding structures are determined as the difference in noncontrolling interests and investment in unconsolidated affiliates at the start and end of each reporting period, after taking into account any capital transactions between the structures and the funds’ investors. The calculations utilized to apply the HLBV method include estimated calculations of taxable income or losses for each reporting period.
Recent Accounting Developments	Recent Accounting Developments ASU 2016-01 — In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , or ASU No. 2016-01. The amendments of ASU No. 2016-01 eliminate available-for-sale classification of equity investments and require that equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be generally measured at fair value with changes in fair value recognized in net income. Further, the amendments require that financial assets and financial liabilities to be presented separately in the notes to the financial statements, grouped by measurement category and form of financial asset. The guidance in ASU No. 2016-01 is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those annual periods. The Company is currently evaluating the impact of the standard on the Company's results of operations, cash flows and financial position. ASU 2015-16 — In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments , or ASU No. 2015-16. The amendments of ASU No. 2015-16 require that an acquirer recognize measurement period adjustments to the provisional amounts recognized in a business combination in the reporting period during which the adjustments are determined. Additionally, the amendments of ASU No. 2015-16 require the acquirer to record in the same period's financial statements the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the measurement period adjustment, calculated as if the accounting had been completed at the acquisition date as well as disclosing on either the face of the income statement or in the notes the portion of the amount recorded in current period earnings that would have been recorded in previous reporting periods. The guidance in ASU No. 2015-16 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The amendments should be applied prospectively. The adoption of this standard is not expected to have a material impact on the Company's results of operations, cash flows or financial position. ASU 2015-03 and ASU 2015-15 — In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , or ASU No. 2015-03. The amendments of ASU No. 2015-03 were issued to reduce complexity in the balance sheet presentation of debt issuance costs. ASU No. 2015-03 requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this standard. Additionally, in August 2015, the FASB issued ASU No. 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, or ASU No. 2015-15, as ASU No. 2015-03 did not specifically address presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. ASU No. 2015-15 allows an entity to continue to defer and present debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The guidance in ASU No. 2015-03 and ASU No. 2015-15 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been previously issued. The Company adopted ASU No. 2015-03 for the year ended December 31, 2015, which resulted in decreases to other assets and debt of $50 million and $58 million as of December 31, 2015 , and December 31, 2014 , respectively. The adoption of this standard had no impact on the Company's results of operations, cash flows or net assets. ASU 2015-02 — In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis , or ASU No. 2015-02. The amendments of ASU No. 2015-02 were issued in an effort to minimize situations under previously existing guidance in which a reporting entity was required to consolidate another legal entity in which that reporting entity did not have: (1) the ability through contractual rights to act primarily on its own behalf; (2) ownership of the majority of the legal entity's voting rights; or (3) the exposure to a majority of the legal entity's economic benefits. ASU No. 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. The guidance in ASU No. 2015-02 is effective for periods beginning after December 15, 2015. Early adoption is permitted. The Company adopted the standard effective January 1, 2015 and the adoption of this standard did not impact the Company's results of operations, cash flows or financial position. ASU 2014-16 - In November 2014, the FASB issued ASU No. 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity , or ASU No. 2014-16. The amendments of ASU No. 2014-16 clarify how U.S. GAAP should be applied in determining whether the nature of a host contract is more akin to debt or equity and in evaluating whether the economic characteristics and risks of an embedded feature are "clearly and closely related" to its host contract. The guidance in ASU No. 2014-16 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The Company adopted the standard effective January 1, 2015 and the adoption of this standard did not impact the Company's results of operations, cash flows or financial position. ASU 2014-09 - In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU No. 2014-09. The amendments of ASU No. 2014-09 complete the joint effort between the FASB and the International Accounting Standards Board, or IASB, to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards, or IFRS, and to improve financial reporting. The guidance in ASU No. 2014-09 provides that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes the following steps to be applied by an entity: (1) identify the contract with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies the performance obligation. In August 2015, the FASB issued ASU 2015-14, which formally deferred the effective date by one year to make the guidance of ASU No. 2014-09 effective for annual reporting periods beginning after December 15, 2017, including interim reports therein. Early adoption is permitted, but not prior to the original effective date, which was for annual reporting periods beginning after December 15, 2016. The Company is currently evaluating the impact of the standard on the Company's results of operations, cash flows and financial position.

Segment Reporting Segment Repor

Segment Reporting Segment Reporting (Policies)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Segment Reporting, Policy [Policy Text Block]	The Company’s segment structure reflects how management currently operates and allocates resources. The Company's businesses are primarily segregated based on conventional power generation, renewable businesses which consist of solar and wind, and the thermal and chilled water business. The Corporate segment reflects the Company's corporate costs.

Nature of Business Nature of Bu

Nature of Business Nature of Business (Tables)	12 Months Ended
	Dec. 31, 2015
IPO of NRG Yield [Abstract]
IPO of NRG Yield [Table Text Block]	The following table represents the structure of the Company as of December 31, 2015 :
Schedule of Ownership Percentage, Net Capacity, Offtake Counterparty and Year of Offtake Expiration by Operating Asset [Table Text Block]	As of December 31, 2015 , the Company's operating assets are comprised of the following projects: Projects Percentage Ownership Net Capacity (MW) (a) Offtake Counterparty Expiration Conventional El Segundo 100 % 550 Southern California Edison 2023 GenConn Devon (b) 50 % 95 Connecticut Light & Power 2040 GenConn Middletown (b) 50 % 95 Connecticut Light & Power 2041 Marsh Landing 100 % 720 Pacific Gas and Electric 2023 Walnut Creek 100 % 485 Southern California Edison 2023 1,945 Utility Scale Solar Alpine 100 % 66 Pacific Gas and Electric 2033 Avenal (b) 50 % 23 Pacific Gas and Electric 2031 Avra Valley 100 % 26 Tucson Electric Power 2032 Blythe 100 % 21 Southern California Edison 2029 Borrego 100 % 26 San Diego Gas and Electric 2038 CVSR 48.95 % 122 Pacific Gas and Electric 2038 Desert Sunlight 250 25 % 63 Southern California Edison 2035 Desert Sunlight 300 25 % 75 Pacific Gas and Electric 2040 Kansas South 100 % 20 Pacific Gas and Electric 2033 Roadrunner 100 % 20 El Paso Electric 2031 TA High Desert 100 % 20 Southern California Edison 2033 482 Distributed Solar AZ DG Solar Projects 100 % 5 Various 2025 - 2033 PFMG DG Solar Projects 51 % 4 Various 2032 9 Wind Alta I 100 % 150 Southern California Edison 2035 Alta II 100 % 150 Southern California Edison 2035 Alta III 100 % 150 Southern California Edison 2035 Alta IV 100 % 102 Southern California Edison 2035 Alta V 100 % 168 Southern California Edison 2035 Alta X (c)(d) 100 % 137 Southern California Edison 2038 Alta XI (c)(d) 100 % 90 Southern California Edison 2038 Buffalo Bear 100 % 19 Western Farmers Electric Co-operative 2033 Crosswinds 74.3 % 16 Corn Belt Power Cooperative 2027 Elbow Creek 75 % 92 NRG Power Marketing LLC 2022 Elkhorn Ridge 50.3 % 41 Nebraska Public Power District 2029 Forward 75 % 22 Constellation NewEnergy, Inc. 2017 Goat Wind 74.9 % 113 Dow Pipeline Company 2025 Hardin 74.3 % 11 Interstate Power and Light Company 2027 Laredo Ridge 100 % 80 Nebraska Public Power District 2031 Lookout 75 % 29 Southern Maryland Electric Cooperative 2030 Odin 74.9 % 15 Missouri River Energy Services 2028 Projects Percentage Ownership Net Capacity (MW) (a) Offtake Counterparty Expiration Pinnacle 100 % 55 Maryland Department of General Services and University System of Maryland 2031 San Juan Mesa 56.3 % 68 Southwestern Public Service Company 2025 Sleeping Bear 75 % 71 Public Service Company of Oklahoma 2032 South Trent 100 % 101 AEP Energy Partners 2029 Spanish Fork 75 % 14 PacifiCorp 2028 Spring Canyon II (c) 90.1 % 29 Platte River Power Authority 2039 Spring Canyon III (c) 90.1 % 25 Platte River Power Authority 2039 Taloga 100 % 130 Oklahoma Gas & Electric 2031 Wildorado 74.9 % 121 Southwestern Public Service Company 2027 1,999 Thermal Thermal equivalent MWt (e) 100 % 1,315 Various Various Thermal generation 100 % 124 Various Various Total net capacity (excluding equivalent MWt) (f) 4,559

Business Acquisitions (Tables)

Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2015
Business Acquisition [Line Items]
Business Acquisition, Purchase Price [Table Text Block]	The purchase price of $923 million was allocated as follows: Acquisition Date Fair Value at December 31, 2014 Measurement period adjustments Revised Acquisition Date (In millions) Assets Cash $ 22 $ — $ 22 Current and non-current assets 49 (2 ) 47 Property, plant and equipment 1,304 6 1,310 Intangible assets 1,177 (6 ) 1,171 Total assets acquired 2,552 (2 ) 2,550 Liabilities Debt 1,591 — 1,591 Current and non-current liabilities 38 (2 ) 36 Total liabilities assumed 1,629 (2 ) 1,627 Net assets acquired $ 923 $ — $ 923
November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table presents the historical information summary combining the financial information for the November 2015 Drop Down Assets transferred in connection with the acquisition: December 31, 2014 As Previously Reported NRG Wind TE Holdco As Currently Reported Current assets $ 590 $ 66 $ 656 Property, plant and equipment 4,466 709 5,175 Non-current assets 1,712 (a) 184 1,896 Total assets 6,768 959 7,727 Debt 4,740 (a) 198 4,938 Other current and non-current liabilities 292 21 313 Total liabilities 5,032 219 5,251 Net assets $ 1,736 $ 740 (b) $ 2,476 (a) Retrospectively adjusted to reclassify deferred financing costs in accordance with ASU 2015-03 as further discussed in Note 2 , Summary of Significant Accounting Policies . (b) Net Assets for NRG Wind TE Holdco as of December 31, 2014, includes noncontrolling interest of $199 million attributable to the TE Investor and $135 million attributable to NRG. Year ended December 31, 2014 As Previously Reported NRG Wind TE Holdco As Currently Reported Total operating revenues $ 689 $ 57 $ 746 Operating income 272 (6 ) 266 Net income 121 (13 ) 108 Year ended December 31, 2013 As Previously Reported NRG Wind TE Holdco As Currently Reported Total operating revenues $ 379 $ 8 $ 387 Operating income 167 (9 ) 158 Net income 143 (9 ) 134 The following is a summary of assets and liabilities transferred in connection with the acquisition as of November 3, 2015: NRG Wind TE Holdco (In millions) Current assets $ 30 Property, plant and equipment 669 Non-current assets 177 Total assets 876 Debt 193 Other current and non-current liabilities 32 Total liabilities 225 Less: noncontrolling interest 282 Net assets acquired $ 369
Business Acquisition, Pro Forma Information [Table Text Block]	The following unaudited supplemental pro forma information represents the results of operations as if the Company had acquired the November 2015 Drop Down Assets on January 1, 2014, including the impact of acquisition accounting with respect to NRG's acquisition of the projects, all of which were acquired by NRG on April 1, 2014, except for Elbow Creek. (In millions) For the year ended December 31, 2014 Operating revenues $ 768 Net income 105
January 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information [Table Text Block]	The following unaudited supplemental pro forma information represents the results of operations as if the Company had acquired the January 2015 Drop Down Assets on January 1, 2014, including the impact of acquisition accounting with respect to NRG's acquisition of the projects. (In millions) For the year ended December 31, 2014 Operating revenues $ 772 Net income 100

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	The Company’s major classes of property, plant, and equipment were as follows: December 31, 2015 December 31, 2014 Depreciable Lives (In millions) Facilities and equipment $ 5,597 $ 5,454 2 - 40 Years Land and improvements 151 150 Construction in progress 9 9 Total property, plant and equipment 5,757 5,613 Accumulated depreciation (701 ) (438 ) Net property, plant and equipment $ 5,056 $ 5,175

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	The following table summarizes the Company's equity method investments as of December 31, 2015 : Name Economic Interest Investment Balance (In millions) Desert Sunlight 25% 291 GenConn (a)(b) 50% 110 CVSR 48.95% 101 Elkhorn Ridge (c) 50.3% 96 San Juan Mesa (c) 56.3% 80 NRG DGPV Holdco 1 LLC (d) 95% 71 NRG RPV Holdco 1 LLC (e) 95% 58 Avenal (b) 50% (9) (a) GenConn is a variable interest entity. (b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015. (c) San Juan Mesa and Elkhorn Ridge are part of the TE Wind Holdco tax equity structure, as described below. San Juan Mesa and Elkhorn Ridge are owned 75% and 66.7% , respectively, by TE Wind Holdco. The Company owns 75% of the Class B interests in TE Wind Holdco. (d) NRG DGPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below. (e) NRG RPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below.
NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	The following illustrates the structure of RPV Holdco:
NRG DGPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	The following illustrates the structure of DGPV Holdco:
Consolidated Entities [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	Summarized financial information for the Company's consolidated VIEs consisted of the following as of December 31, 2015 : (In millions) NRG TE Wind Holdco Alta Wind TE Holdco Spring Canyon Other current and non-current assets $ 204 $ 18 $ 3 Property, plant and equipment 663 484 104 Intangible assets 2 287 — Total assets 869 789 107 Current and non-current liabilities 220 10 5 Total liabilities 220 10 5 Noncontrolling interest 268 121 70 Net assets less noncontrolling interests $ 381 $ 658 $ 32
Entities that are not consolidated [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	The following tables present summarized financial information for the Company's significant equity method investments: Year Ended December 31, 2015 2014 2013 Income Statement Data: (In millions) CVSR Operating revenues $ 83 $ 82 $ 47 Operating income 43 40 22 Net income 19 17 4 GenConn Operating revenues 78 82 80 Operating income 40 40 44 Net income 28 28 31 Desert Sunlight Operating revenues 206 Operating income 124 Net income 73 As of December 31, 2015 2014 Balance Sheet Data: (In millions) CVSR Current assets $ 98 $ 173 Non-current assets 917 868 Current liabilities 33 33 Non-current liabilities 775 799 GenConn Current assets 36 33 Non-current assets 416 438 Current liabilities 16 20 Non-current liabilities 215 223 Desert Sunlight Current assets 310 Non-current assets 1,435 Current liabilities 82 Non-current liabilities 1,086

Fair Value of Financial Instr41

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	The estimated carrying amounts and fair values of the Company’s recorded financial instruments not carried at fair market value are as follows: As of December 31, 2015 As of December 31, 2014 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Assets: Notes receivable, including current portion 17 17 21 21 Liabilities: Long-term debt, including current portion — affiliate 618 553 337 386 Long-term debt, including current portion — external 4,267 4,181 4,659 4,676
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following table presents assets and liabilities measured and recorded at fair value on the Company's consolidated balance sheets on a recurring basis and their level within the fair value hierarchy: As of December 31, 2015 As of December 31, 2014 Fair Value (a) Fair Value (a) (In millions) Level 2 Level 2 Derivative assets: Commodity contracts $ — $ 2 Interest rate contracts — 2 Total assets $ — 4 Derivative liabilities: Commodity contracts $ 2 3 Interest rate contracts 98 126 Total liabilities $ 100 $ 129 (a) There were no assets or liabilities classified as Level 1 or Level 3 as of December 31, 2015 , and 2014 .

Accounting for Derivative Ins42

Accounting for Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative [Line Items]
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	The following table summarizes the net notional volume buy/(sell) of the Company's open derivative transactions broken out by commodity as of December 31, 2015 and 2014 : Total Volume December 31, 2015 December 31, 2014 Commodity Units (In millions) Natural Gas MMBtu 4 2 Interest Dollars $ 1,991 $ 3,059 The decrease in the interest rate position is primarily the result of settling the Alta X and Alta XI interest rate swaps in connection with the repayment of the outstanding project-level debt during the second quarter of 2015, as further described in Note 9 , Long-term Debt .
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]	The following table summarizes the fair value within the derivative instrument valuation on the balance sheet: Fair Value Derivative Assets Derivative Liabilities December 31, 2014 December 31, 2015 December 31, 2014 (In millions) Derivatives Designated as Cash Flow Hedges: Interest rate contracts current $ — $ 34 $ 44 Interest rate contracts long-term 2 56 57 Total Derivatives Designated as Cash Flow Hedges 2 90 101 Derivatives Not Designated as Cash Flow Hedges : Interest rate contracts current — 3 5 Interest rate contracts long-term — 5 20 Commodity contracts current 2 2 3 Total Derivatives Not Designated as Cash Flow Hedges 2 10 28 Total Derivatives $ 4 $ 100 $ 129
Offsetting Liabilities [Table Text Block]	The following table summarizes the offsetting of derivatives by counterparty master agreement level as of December 31, 2014 : Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2014 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts: (In millions) Derivative assets $ 2 $ — $ 2 Derivative liabilities (3 ) — (3 ) Total commodity contracts (1 ) — (1 ) Interest rate contracts: Derivative assets 2 (2 ) — Derivative liabilities (126 ) 2 (124 ) Total interest rate contracts (124 ) — (124 ) Total derivative instruments $ (125 ) $ — $ (125 )
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table summarizes the effects on the Company’s accumulated OCL balance attributable to interest rate swaps designated as cash flow hedge derivatives: Year ended December 31, 2015 2014 2013 (In millions) Accumulated OCL beginning balance $ (67 ) $ (1 ) $ (48 ) Reclassified from accumulated OCL to income due to realization of previously deferred amounts 16 14 12 Mark-to-market of cash flow hedge accounting contracts (34 ) (80 ) 35 Accumulated OCL ending balance (85 ) (67 ) (1 ) Accumulated OCL attributable to noncontrolling interests (3 ) (2 ) — Accumulated OCL attributable to NRG Yield LLC $ (82 ) $ (65 ) $ (1 ) Losses expected to be realized from OCL during the next 12 months $ 16 Amounts reclassified from accumulated OCL into income and amounts recognized in income from the ineffective portion of cash flow hedges are recorded to interest expense. There was no ineffectiveness for the years ended December 31, 2015 , 2014 and 2013 .

Intangible Assets Intangible 43

Intangible Assets Intangible Assets - (Tables)	12 Months Ended
	Dec. 31, 2015
Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets [Table Text Block]	The following tables summarize the components of intangible assets subject to amortization: Year ended December 31, 2015 Emission Allowances Development Rights Customer Contracts Customer Relationships PPAs Leasehold Rights Other Total (In millions) January 1, 2015 $ 16 $ 4 $ 15 $ 66 $ 1,269 $ 86 $ 6 $ 1,462 Other (1 ) — — — (6 ) — — (7 ) December 31, 2015 15 4 15 66 1,263 86 6 1,455 Less accumulated amortization (1 ) (1 ) (6 ) (3 ) (75 ) (5 ) (2 ) (93 ) Net carrying amount $ 14 $ 3 $ 9 $ 63 $ 1,188 $ 81 $ 4 $ 1,362 Year ended December 31, 2014 Emission Allowances Development Rights Customer Contracts Customer Relationships PPAs Leasehold Rights Other Total (In millions) January 1, 2014 $ 8 $ 4 $ 15 $ 66 $ 14 $ — $ 6 $ 113 Acquisition of Alta Wind Portfolio — — — — 1,092 86 — 1,178 Transfer of January 2015 Drop Down Assets 7 — — — 160 — — 167 Other 1 — — — 3 — — 4 December 31, 2014 16 4 15 66 1,269 86 6 1,462 Less accumulated amortization — (1 ) (5 ) (2 ) (26 ) (2 ) (2 ) (38 ) Net carrying amount $ 16 $ 3 $ 10 $ 64 $ 1,243 $ 84 $ 4 $ 1,424
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	The following table presents estimated amortization of the Company's intangible assets for each of the next five years: Year Ended December 31, Total (In millions) 2016 $ 70 2017 70 2018 71 2019 71 2020 71

Members' Equity (Tables)

Members' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Members' Equity [Abstract]
Schedule of Dividends Paid [Table Text Block]	The following table lists the distributions paid on the Company's Class A, Class B, Class C and Class D units during the year ended December 31, 2015 : Fourth Quarter 2015 Third Quarter 2015 Second Quarter 2015 First Quarter 2015 Distributions per Class A and Class B units $ 0.215 $ 0.210 $ 0.20 $ 0.39 Distributions per Class C and Class D units $ 0.215 $ 0.210 $ 0.20 N/A

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Instrument [Line Items]
Schedule of Derivative Instruments [Table Text Block]	The following table summarizes the swaps, some of which are forward starting as indicated, related to the Company's project level debt as of December 31, 2015 . % of Principal Fixed Interest Rate Floating Interest Rate Notional Amount at December 31, 2015 Effective Date Maturity Date Alpine 85 % 2.744 % 3-Month LIBOR $ 122 various December 31, 2029 Alpine 85 % 2.421 % 3-Month LIBOR 9 June 24, 2014 June 30, 2025 Avra Valley 85 % 2.333 % 3-Month LIBOR 51 November 30, 2012 November 30, 2030 AWAM 100 % 2.47 % 3-Month LIBOR 19 May 22, 2013 May 15, 2031 Blythe 75 % 3.563 % 3-Month LIBOR 16 June 25, 2010 June 25, 2028 Borrego 75 % 1.125 % 3-Month LIBOR 9 April 3, 2013 June 30, 2020 El Segundo 75 % 2.417 % 3-Month LIBOR 358 November 30, 2011 August 31, 2023 Kansas South 75 % 2.368 % 6-Month LIBOR 25 June 28, 2013 December 31, 2030 Laredo Ridge 75 % 2.31 % 3-Month LIBOR 83 March 31, 2011 March 31, 2026 Marsh Landing 75 % 3.244 % 3-Month LIBOR 387 June 28, 2013 June 30, 2023 Roadrunner 75 % 4.313 % 3-Month LIBOR 30 September 30, 2011 December 31, 2029 South Trent 75 % 3.265 % 3-Month LIBOR 46 June 15, 2010 June 14, 2020 South Trent 75 % 4.95 % 3-Month LIBOR 21 June 30, 2020 June 14, 2028 Tapestry 75 % 2.21 % 3-Month LIBOR 163 December 30, 2011 December 21, 2021 Tapestry 50 % 3.57 % 3-Month LIBOR 60 December 21, 2021 December 21, 2029 Viento 90 % various 6-Month LIBOR 235 various various Walnut Creek Energy 75 % various 3-Month LIBOR 311 June 28, 2013 May 31, 2023 WCEP Holdings 90 % 4.003 % 3-Month LIBOR 46 June 28, 2013 May 31, 2023 Total $ 1,991
Schedule of Maturities of Long-term Debt [Table Text Block]	Annual Maturities Annual payments based on the maturities of the Company's debt, for the years ending after December 31, 2015 are as follows: (In millions) 2016 $ 241 2017 252 2018 260 2019 919 2020 607 Thereafter 2,606 Total $ 4,885
Schedule of long-term debt	The Company's borrowings, including short term and long term portions consisted of the following: December 31, 2015 December 31, 2014 Interest rate % (a) Letters of Credit Outstanding at December 31, 2015 (In millions, except rates) Senior Notes, due 2024 $ 500 $ 500 5.375 Long-term debt - affiliate, due 2020 281 — 3.325 Long-term debt - affiliate, due 2019 337 337 3.580 NRG Yield LLC and NRG Yield Operating LLC Revolving Credit Facility, due 2019 (b) 306 — L+2.75 56 Project-level debt: Alpine, due 2022 154 163 L+1.75 37 Alta Wind I, lease financing arrangement, due 2034 252 261 7.015 16 Alta Wind II, lease financing arrangement, due 2034 198 205 5.696 28 Alta Wind III, lease financing arrangement, due 2034 206 212 6.067 28 Alta Wind IV, lease financing arrangement, due 2034 133 138 5.938 19 Alta Wind V, lease financing arrangement, due 2035 213 220 6.071 31 Alta Wind X, due 2021 — 300 L+2.00 — Alta Wind XI, due 2021 — 191 L+2.00 — Alta Realty Investments, due 2031 33 34 7.00 — Alta Wind Asset Management, due 2031 19 20 L+2.375 — Avra Valley, due 2031 60 63 L+1.75 3 Blythe, due 2028 21 22 L+1.625 6 Borrego, due 2025 and 2038 72 75 L+ 2.50/5.65 5 El Segundo Energy Center, due 2023 485 506 L+1.625 - L+2.25 82 Energy Center Minneapolis, due 2017 and 2025 108 121 5.95 -7.25 — Kansas South, due 2031 33 35 L+2.00 4 Laredo Ridge, due 2028 104 108 L+1.875 10 Marsh Landing, due 2017 and 2023 418 464 L+1.75 - L+1.875 22 PFMG and related subsidiaries financing agreement, due 2030 29 31 6.00 — Roadrunner, due 2031 40 42 L+1.625 5 South Trent Wind, due 2020 62 65 L+1.625 10 TA High Desert, due 2020 and 2032 52 55 L+2.50/5.15 8 Tapestry Wind, due 2021 181 192 L+1.625 20 Viento, due 2023 189 196 L+2.75 27 Walnut Creek, due 2023 351 391 L+1.625 41 WCEP Holdings, due 2023 46 46 L+3.00 — Other 2 3 various — Subtotal project-level debt: 3,461 4,159 Total debt 4,885 4,996 Less current maturities 241 224 Less deferred financing costs (c) 50 58 Total long-term debt $ 4,594 $ 4,714

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011
Segment Reporting [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	The Company generated more than 10% of its revenues from the following customers for the years ended December 31, 2015 , 2014 and 2013 : 2015 2014 2013 Customer Conventional (%) Renewables (%) Conventional (%) Renewables (%) Conventional (%) Renewables (%) SCE 25% 18% 26% 9% 14% 4% PG&E 14% 3% 16% 4% 21% 7%
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Year ended December 31, 2015 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 336 $ 359 $ 174 $ — $ 869 Cost of operations 59 127 126 — 312 Depreciation and amortization 81 165 19 — 265 General and administrative — — — 10 10 Acquisition-related transaction and integration costs — — — 3 3 Operating income (loss) 196 67 29 (13 ) 279 Equity in earnings of unconsolidated affiliates 14 21 — — 35 Other income, net 1 1 — — 2 Loss on extinguishment of debt (7 ) (2 ) — — (9 ) Interest expense (48 ) (122 ) (7 ) (52 ) (229 ) Net Income (Loss) $ 156 $ (35 ) $ 22 $ (65 ) $ 78 Balance Sheet Equity investment in affiliates $ 110 $ 688 $ — $ — $ 798 Capital expenditures (a) 4 6 20 — 30 Total Assets $ 2,102 $ 5,056 $ 428 $ 22 $ 7,608 (a) Includes accruals.	Year ended December 31, 2014 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 317 $ 234 $ 195 $ — $ 746 Cost of operations 55 72 139 — 266 Depreciation and amortization 82 102 18 — 202 General and administrative — — — 8 8 Acquisition-related transaction and integration costs — — — 4 4 Operating income (loss) 180 60 38 (12 ) 266 Equity in earnings of unconsolidated affiliates 14 11 — — 25 Other income, net — 2 — 1 3 Interest expense (53 ) (101 ) (7 ) (25 ) (186 ) Net Income (Loss) $ 141 $ (28 ) $ 31 $ (36 ) $ 108 Balance Sheet Equity investments in affiliates $ 114 $ 296 $ — $ — $ 410 Capital expenditures (a) 6 — 7 — 13 Total Assets $ 2,169 $ 4,790 $ 436 $ 332 $ 7,727 (a) Includes accruals. Capital expenditures for Renewables include a sales tax refund received by Alpine in the first quarter of 2014.	Year ended December 31, 2013 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 138 $ 97 $ 152 $ — $ 387 Cost of operations 23 15 110 — 148 Depreciation and amortization 20 39 15 — 74 General and administrative — — — 7 7 Operating income (loss) 95 43 27 (7 ) 158 Equity in earnings of unconsolidated affiliates 16 6 — — 22 Other income, net 1 2 — — 3 Interest expense (25 ) (20 ) (7 ) — (52 ) Income (loss) before income taxes 87 31 20 (7 ) 131 Income tax benefit — — — (3 ) (3 ) Net Income (Loss) $ 87 $ 31 $ 20 $ (4 ) $ 134

Condensed Consolidating Finan47

Condensed Consolidating Financial Information CP Income Statement Condensed Income Statement (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Leases [Abstract]
Condensed Income Statement [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan48

Condensed Consolidating Financial Information CP Comprehensive Income Condensed Consolidating CP Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Condensed Statement of Comprehensive Income [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan49

Condensed Consolidating Financial Information CP Balance Sheet Condensed Consolidating CP Balance Sheet (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Information [Abstract]
Condensed Balance Sheet [Table Text Block]	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan50

Condensed Consolidating Financial Information CP Cash Flows Condensed Consolidating CP Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Cash Flow Statement [Table Text Block]	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan51

Condensed Consolidating Financial Information PP Income Statement Condensed Consolidating PP Income Statement (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Condensed Income Statement [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan52

Condensed Consolidating Financial Information PP Comprehensive Income Condensed Consolidating PP Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Statement of Comprehensive Income [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan53

Condensed Consolidating Financial Information PP Balance Sheet Condensed Consolidating PP Balance Sheet (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Information [Abstract]
Condensed Balance Sheet [Table Text Block]	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 15 $ — $ 95 $ — $ — $ 110 Restricted cash — — 48 — — 48 Accounts receivable — trade — 1 94 — — 95 Accounts receivable — affiliate 55 4 6 10 (71 ) 4 Inventory — 2 33 — — 35 Notes receivable — — 7 3 (3 ) 7 Prepayments and other current assets — 1 21 — — 22 Total current assets 70 8 304 13 (74 ) 321 Net property, plant and equipment — 61 4,995 — — 5,056 Other Assets Investment in consolidated subsidiaries 1,904 548 — 3,270 (5,722 ) — Equity investments in affiliates — 70 176 552 — 798 Notes receivable — — 10 — — 10 Intangible assets, net — 57 1,305 — — 1,362 Other non-current assets — — 59 2 — 61 Total other assets 1,904 675 1,550 3,824 (5,722 ) 2,231 Total Assets $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC Eliminations (b) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 244 $ — $ (3 ) $ 241 Accounts payable — 1 19 3 — 23 Accounts payable — affiliate — 8 45 104 (72 ) 85 Derivative instruments — 1 38 — — 39 Accrued expenses and other current liabilities — 1 49 17 — 67 Total current liabilities — 11 395 124 (75 ) 455 Other Liabilities Long-term debt — external — — 3,176 800 — 3,976 Long-term debt — affiliate — — — 618 — 618 Derivative instruments — — 61 — — 61 Other non-current liabilities — — 64 — — 64 Total non-current liabilities — — 3,301 1,418 — 4,719 Total Liabilities — 11 3,696 1,542 (75 ) 5,174 Commitments and Contingencies Members' Equity Contributed capital 1,963 821 3,162 1,895 (5,878 ) 1,963 Retained earnings (accumulated deficit) 93 (85 ) (11 ) 93 3 93 Accumulated other comprehensive loss (82 ) (3 ) (69 ) (82 ) 154 (82 ) Noncontrolling interest — — 71 389 — 460 Total Members' Equity 1,974 733 3,153 2,295 (5,721 ) 2,434 Total Liabilities and Members’ Equity $ 1,974 $ 744 $ 6,849 $ 3,837 $ (5,796 ) $ 7,608 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2014 NRG Yield LLC (a)(c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b)(c) Consolidated ASSETS (In millions) Current Assets Cash and cash equivalents $ 328 $ — $ 101 $ — $ — $ 429 Restricted cash — — 47 — — 47 Accounts receivable — trade — 3 87 — — 90 Accounts receivable — affiliate — 17 111 268 (368 ) 28 Inventory — 1 31 — — 32 Derivative instruments — affiliate — — 2 — — 2 Notes receivable — — 6 — — 6 Prepayments and other current assets — 1 21 — — 22 Total current assets 328 22 406 268 (368 ) 656 Net property, plant and equipment — 56 5,119 — — 5,175 Other Assets Investment in consolidated subsidiaries 2,070 585 — 2,785 (5,440 ) — Equity investments in affiliates — — 183 227 — 410 Notes receivable — — 15 — — 15 Intangible assets, net — 58 1,366 — — 1,424 Derivative instruments — — 2 — — 2 Other non-current assets — — 35 10 — 45 Total other assets 2,070 643 1,601 3,022 (5,440 ) 1,896 Total Assets $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business . NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS (Continued) December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (c) Eliminations (b) (c) Consolidated LIABILITIES AND MEMBERS' EQUITY (In millions) Current Liabilities Current portion of long-term debt — external $ — $ — $ 224 $ — $ — $ 224 Accounts payable — 1 21 — — 22 Accounts payable — affiliate 256 8 116 33 (368 ) 45 Derivative instruments — — 52 — — 52 Accrued expenses and other current liabilities — 2 47 16 — 65 Total current liabilities 256 11 460 49 (368 ) 408 Other Liabilities Long-term debt — external — — 3,877 500 — 4,377 Long-term debt — affiliate — — — 337 — 337 Derivative instruments — — 77 — — 77 Other non-current liabilities — — 52 — — 52 Total non-current liabilities — — 4,006 837 — 4,843 Total Liabilities 256 11 4,466 886 (368 ) 5,251 Commitments and Contingencies Members' Equity Contributed capital 2,104 747 2,678 2,035 (5,460 ) 2,104 Retained earnings (accumulated deficit) 103 (34 ) 32 100 (98 ) 103 Accumulated other comprehensive loss (65 ) (3 ) (50 ) (65 ) 118 (65 ) Noncontrolling interest — — — 334 — 334 Total Members' Equity 2,142 710 2,660 2,404 (5,440 ) 2,476 Total Liabilities and Members’ Equity $ 2,398 $ 721 $ 7,126 $ 3,290 $ (5,808 ) $ 7,727 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan54

Condensed Consolidating Financial Information PP Cash Flows Condensed Consolidating PP Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Information [Abstract]
Condensed Cash Flow Statement [Table Text Block]	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan55

Condensed Consolidating Financial Information PP2 Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Cash Flows [Abstract]
Condensed Cash Flow Statement [Table Text Block]	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Consolidated (In millions) Net Cash Provided by Operating Activities $ — $ 19 $ 265 $ 88 $ 372 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (464 ) — — 464 — Acquisition of business, net of cash acquired — — — (37 ) (37 ) Acquisition of Drop Down Assets, net of cash acquired — — — (698 ) (698 ) Capital expenditures — — (29 ) — (29 ) Increase in restricted cash — — (1 ) — (1 ) Decrease in notes receivable, including affiliates — — 7 — 7 Net investments in unconsolidated affiliates — (28 ) — (332 ) (360 ) Net Cash Used in Investing Activities (464 ) (28 ) (23 ) (603 ) (1,118 ) Cash Flows from Financing Activities Contributions from tax equity investors — — — 122 122 Distributions and return of capital to NRG prior to the acquisition of Drop Down Assets and IPO — — (38 ) — (38 ) Proceeds from the issuance of Class C units 599 — — — 599 (Payments for) proceeds from intercompany loans (309 ) 9 — 300 — Payment of dividends and distributions (139 ) — — — (139 ) Proceeds from issuance of long-term debt — external — — 5 552 557 Proceeds from issuance of long-term debt — affiliate — — — 281 281 Payment of debt issuance costs — — (6 ) (1 ) (7 ) Payments for long-term debt — external — — (209 ) (739 ) (948 ) Net Cash Provided by (Used in) Financing Activities 151 9 (248 ) 515 427 Net Decrease in Cash and Cash Equivalents (313 ) — (6 ) — (319 ) Cash and Cash Equivalents at Beginning of Period 328 — 101 — 429 Cash and Cash Equivalents at End of Period $ 15 $ — $ 95 $ — $ 110 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2014 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 100 $ 12 $ 112 $ 86 $ 310 Cash Flows from Investing Activities Intercompany transactions from Yield LLC to subsidiaries (630 ) — — 630 — Acquisition of Drop Down Assets, net of cash acquired — — 46 (357 ) (311 ) Acquisition of businesses, net of cash acquired — — — (901 ) (901 ) Capital expenditures — — (33 ) — (33 ) Decrease in restricted cash — — 49 — 49 Decrease in notes receivable including affiliates, net — — 6 2 8 Proceeds from renewable energy grants — — 137 — 137 Investments in unconsolidated affiliates — — — 7 7 Other — — 11 — 11 Net Cash (Used in) Provided by Investing Activities (630 ) — 216 (619 ) (1,033 ) Cash Flows from Financing Activities Contributions from tax equity investors — — 190 — 190 Capital contributions from NRG — — 2 — 2 Distributions and returns of capital to NRG — — (290 ) — (290 ) Proceeds from the issuance of Class A units 630 — — — 630 Payment of dividends and distributions (101 ) — — — (101 ) Proceeds from issuance of long-term debt - external — — 130 500 630 Proceeds from issuance of long-term debt - affiliate — — — 337 337 Transfer of funds under intercompany cash management arrangement 326 (12 ) — (314 ) — Payments of long-term debt- external — — (277 ) — (277 ) Payment of debt issuance costs — — (18 ) (10 ) (28 ) Net Cash Provided by (Used in) Financing Activities 855 (12 ) (263 ) 513 1,093 Net Increase (Decrease) in Cash and Cash Equivalents 325 — 65 (20 ) 370 Cash and Cash Equivalents at Beginning of Period 3 — 36 20 59 Cash and Cash Equivalents at End of Period $ 328 $ — $ 101 $ — $ 429 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Year Ended December 31, 2013 NRG Yield LLC (a) (b) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (b) NRG Yield Operating LLC (Note Issuer) (b) Consolidated (In millions) Net Cash Provided by Operating Activities $ 57 $ 26 $ 24 $ 13 $ 120 Cash Flows from Investing Activities Acquisition of business, net of cash acquired — — — (120 ) (120 ) Capital expenditures — — (353 ) — (353 ) Increase in restricted cash, net — — (43 ) — (43 ) Decrease in notes receivable — — 8 2 10 Proceeds from renewable energy grants — — 25 — 25 Net investments in unconsolidated affiliates — — — (34 ) (34 ) Net Cash Used in Investing Activities — — (363 ) (152 ) (515 ) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (112 ) — — 112 — Capital contributions from NRG — — 171 — 171 Proceeds from issuance of Class A units 468 — — — 468 Distributions and return of capital to NRG (395 ) — (312 ) — (707 ) Payment of dividends and distributions (15 ) — — — (15 ) Distributions from project companies, net of contributions — — (48 ) 48 — Proceeds from issuance of long-term debt — external — — 594 — 594 Payments of long-term debt — affiliate — — (2 ) — (2 ) Payments of long-term debt — external — (26 ) (46 ) — (72 ) Payment of debt issuance costs — — (4 ) (1 ) (5 ) Net Cash (Used in) Provided by Financing Activities (54 ) (26 ) 353 159 432 Net Decrease in Cash and Cash Equivalents 3 — 14 20 37 Cash and Cash Equivalents at Beginning of Period — — 22 — 22 Cash and Cash Equivalents at End of Period $ 3 $ — $ 36 $ 20 $ 59 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan56

Condensed Consolidating Financial Information PP2 Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Condensed Statement of Comprehensive Income [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Net Income (Loss) $ 129 $ (41 ) $ 98 $ 80 $ (188 ) $ 78 Other Comprehensive Loss Unrealized loss on derivatives (17 ) — (19 ) (18 ) 36 (18 ) Other comprehensive loss (17 ) — (19 ) (18 ) 36 (18 ) Comprehensive Income 112 (41 ) 79 62 (152 ) 60 Less: Comprehensive loss attributable to noncontrolling interests — — — (52 ) — (52 ) Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 112 $ (41 ) $ 79 $ 114 $ (152 ) $ 112 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS) For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income (Loss) $ 105 $ (18 ) $ 113 $ 107 $ (199 ) $ 108 Other Comprehensive Income Unrealized loss on derivatives (64 ) — (65 ) (66 ) 129 (66 ) Other comprehensive loss (64 ) — (65 ) (66 ) 129 (66 ) Comprehensive Income (Loss) 41 (18 ) 48 41 (70 ) 42 Less: Comprehensive income attributable to noncontrolling interests — — — 1 — 1 Comprehensive Income (Loss) Attributable to NRG Yield LLC $ 41 $ (18 ) $ 48 $ 40 $ (70 ) $ 41 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Net Income $ 136 $ 3 $ 116 $ 131 $ (252 ) $ 134 Other Comprehensive Income (Loss) Unrealized gain on derivatives 47 3 56 47 (106 ) 47 Other comprehensive income 47 3 56 47 (106 ) 47 Comprehensive Income 183 6 172 178 (358 ) 181 Less: Comprehensive loss attributable to noncontrolling interests — — — (2 ) — (2 ) Comprehensive Income Attributable to NRG Yield LLC $ 183 $ 6 $ 172 $ 180 $ (358 ) $ 183 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Condensed Consolidating Finan57

Condensed Consolidating Financial Information PP2 Income Statement (Tables)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Income Statement [Table Text Block]	For the Year Ended December 31, 2015 NRG Yield LLC (a) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries NRG Yield Operating LLC (Note Issuer) Eliminations (b) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 21 $ 838 $ 10 $ — $ 869 Operating Costs and Expenses — Cost of operations — 14 298 — — 312 Depreciation and amortization — 4 261 — — 265 General and administrative — — — 10 — 10 Acquisition-related transaction and integration costs — — — 3 — 3 Total operating costs and expenses — 18 559 13 — 590 Operating Income (Loss) — 3 279 (3 ) — 279 Other Income (Expense) Equity in earnings of consolidated affiliates 129 (43 ) — 102 (188 ) — Equity in earnings of unconsolidated affiliates — (1 ) 3 33 — 35 Other income, net — — 2 — — 2 Loss on extinguishment of debt — — (9 ) — — (9 ) Interest expense — — (177 ) (52 ) — (229 ) Total other income (expense), net 129 (44 ) (181 ) 83 (188 ) (201 ) Net Income (Loss) 129 (41 ) 98 80 (188 ) 78 Less: Net loss attributable to noncontrolling interests — — (2 ) (49 ) — (51 ) Net Income (Loss) Attributable to NRG Yield LLC $ 129 $ (41 ) $ 100 $ 129 $ (188 ) $ 129 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation.	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2014 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ 24 $ 722 $ — $ — $ 746 Operating Costs and Expenses Cost of operations — 16 250 — — 266 Depreciation and amortization — 4 198 — — 202 General and administrative — — — 8 — 8 Acquisition-related transaction and integration costs — — — 4 — 4 Total operating costs and expenses — 20 448 12 — 480 Operating Income (Loss) — 4 274 (12 ) — 266 Other Income (Expense) Equity in earnings (losses) of consolidated affiliates 104 (22 ) — 117 (199 ) — Equity in (losses) earnings of unconsolidated affiliates — — (2 ) 27 — 25 Other income, net 1 — 2 — — 3 Interest expense — — (161 ) (25 ) — (186 ) Total other income (expense) 105 (22 ) (161 ) 119 (199 ) (158 ) Net Income (Loss) 105 (18 ) 113 107 (199 ) 108 Less: Net income attributable to noncontrolling interests — — — 3 — 3 Net Income (Loss) Attributable to NRG Yield LLC $ 105 $ (18 ) $ 113 $ 104 $ (199 ) $ 105 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .	NRG YIELD LLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS For the Year Ended December 31, 2013 NRG Yield LLC (a) (c) Other Guarantor Subsidiaries Non-Guarantor Subsidiaries (c) NRG Yield Operating LLC (Note Issuer) (c) Eliminations (b) (c) Consolidated (In millions) Operating Revenues Total operating revenues $ — $ — $ 387 $ — $ — $ 387 Operating Costs and Expenses Cost of operations — — 148 — — 148 Depreciation and amortization — — 74 — — 74 General and administrative — — — 7 — 7 Total operating costs and expenses — — 222 7 — 229 Operating Income (Loss) — — 165 (7 ) — 158 Other Income (Expense) Equity in earnings of consolidated affiliates 133 3 — 116 (252 ) — Equity in earnings of unconsolidated affiliates — — — 22 — 22 Other income, net — — 3 — — 3 Interest expense — — (52 ) — — (52 ) Total other income (expense), net 133 3 (49 ) 138 (252 ) (27 ) Net Income Before Income Taxes 133 3 116 131 (252 ) 131 Income tax benefit (3 ) — — — — (3 ) Net Income 136 3 116 131 (252 ) 134 Less: Net loss attributable to noncontrolling interests — — — (2 ) — (2 ) Net Income Attributable to NRG Yield LLC $ 136 $ 3 $ 116 $ 133 $ (252 ) $ 136 (a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X. (b) All significant intercompany transactions have been eliminated in consolidation. (c) Retrospectively adjusted as discussed in Note 1, Nature of Business .

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The income tax provision consisted of the following amounts: Year Ended December 31, 2013 2013 (In millions, except percentages) Current U.S. Federal $ — Total — current — Deferred U.S. Federal (3 ) State — Total — deferred (3 ) Total income tax benefit $ (3 ) Effective tax rate (2.1 )%
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	A reconciliation of the U.S. federal statutory rate of 35% to the Company's effective rate is as follows: Year Ended December 31, 2013 (In millions, except percentages) Income Before Income Taxes $ 131 Tax at 35% 46 Impact of change in tax status as of July 22, 2013 (49 ) Income tax benefit $ (3 ) Effective income tax rate (2.1 )%

Unaudited Quarterly Financial59

Unaudited Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]	Summarized unaudited quarterly financial data is as follows: Quarter Ended December 31, September 30, (a) June 30, (a) March 31, (a) 2015 (In millions) Operating Revenues $ 209 $ 225 $ 235 $ 200 (As previously reported) Operating Revenues N/A 209 217 180 Change N/A 16 18 20 Operating Income 67 81 85 46 (As previously reported) Operating Income N/A 87 87 48 Change N/A (6 ) (2 ) (2 ) Net Income (Loss) 21 36 44 (23 ) (As previously reported) Net Income (Loss) N/A 46 47 (19 ) Change N/A $ (10 ) $ (3 ) $ (4 ) (a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets. Quarter Ended December 31, (a) September 30, (a) June 30, (a) March 31, (a) 2014 (In millions) Operating Revenues $ 212 $ 199 $ 194 $ 141 (As previously reported) Operating Revenues 192 184 173 140 Change 20 15 21 1 Operating Income 70 85 60 51 (As previously reported) Operating Income 69 85 64 54 Change 1 — (4 ) (3 ) Net Income (Loss) (6 ) 48 39 27 (As previously reported) Net Income (Loss) (5 ) 51 45 30 Change $ (1 ) $ (3 ) $ (6 ) $ (3 )

Commitments and Contingencies60

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingencies Operating Lease Commitments The Company leases certain facilities and equipment under operating leases, some of which include escalation clauses, expiring on various dates through 2048. The effects of these scheduled rent increases, leasehold incentives, and rent concessions are recognized on a straight-line basis over the lease term unless another systematic and rational allocation basis is more representative of the time pattern in which the leased property is physically employed. Lease expense under operating leases was $9 million , $8 million and $2 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. Future minimum lease commitments under operating leases for the years ending after December 31, 2015 , are as follows: Period (In millions) 2016 $ 12 2017 9 2018 9 2019 9 2020 8 Thereafter 135 Total $ 182 Gas and Transportation Commitments The Company has entered into contractual arrangements to procure power, fuel and associated transportation services. For the years ended December 31, 2015 , 2014 and 2013 , the Company purchased $40 million , $55 million , and $40 million , respectively, under such arrangements. As further described in Note 13 Related Party Transactions , these balances include intercompany sales in the amount of $13 million , $12 million and $7 million , respectively. As of December 31, 2015 , the Company's commitments under such outstanding agreements are estimated as follows: Period (In millions) 2016 $ 12 2017 6 2018 3 2019 3 2020 3 Thereafter 21 Total $ 48 Contingencies In the normal course of business, the Company is subject to various claims and litigations. Management expects that these various litigation items will not have a material adverse effect on the Company's results of operations or financial position.
Long-term Purchase Commitment [Table Text Block]	As of December 31, 2015 , the Company's commitments under such outstanding agreements are estimated as follows: Period (In millions) 2016 $ 12 2017 6 2018 3 2019 3 2020 3 Thereafter 21 Total $ 48
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Future minimum lease commitments under operating leases for the years ending after December 31, 2015 , are as follows: Period (In millions) 2016 $ 12 2017 9 2018 9 2019 9 2020 8 Thereafter 135 Total $ 182

Nature of Business (Details)

Nature of Business (Details)

Feb. 19, 2016USD ($)

Nov. 03, 2015USD ($)

Jun. 29, 2015USD ($)shares

Jan. 02, 2015USD ($)

Jul. 29, 2014USD ($)shares

Jun. 30, 2014USD ($)

Jul. 22, 2013USD ($)shares

Dec. 31, 2013USD ($)

Jul. 22, 2013USD ($)

Dec. 31, 2015USD ($)MW

Dec. 31, 2014USD ($)

Dec. 31, 2013USD ($)

Nov. 02, 2015USD ($)MW

Sep. 30, 2015

Jun. 30, 2015

Dec. 31, 2012USD ($)

Nature of Business

Megawatts Thermal Equivalent, Available Under right-to-use Provisions

134

Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax | $

$ (1,000,000)

$ (85,000,000)

$ (67,000,000)

$ (1,000,000)

$ (48,000,000)

Allocation of Corporate Expenses | $

$ 3,000,000

Power Generation Capacity, Megawatts

[1],[2]

4,559

General and administrative | $

$ 10,000,000

8,000,000

[3]

7,000,000

[3]

Acquisition of businesses, net of cash acquired | $

(37,000,000)

(901,000,000)

[4]

(120,000,000)

Business Acquisition, Consideration Transferred, Working Capital | $

1,000,000

Proceeds from the issuance of Class C and Class A units | $

$ 599,000,000

630,000,000

[4]

468,000,000

[4]

Distributed Solar

Nature of Business

Power Generation Capacity, Megawatts

[1]

9

Wind Farms [Member]

Nature of Business

Power Generation Capacity, Megawatts

[1]

1,999

Thermal [Member]

Nature of Business

Percentage of Ownership

[5]

100.00%

Steam and Chilled Water Capacity, Megawatts Thermal Equivalent

[1],[5]

1,315

Power Generation Capacity, Megawatts

[1]

124

Conventional Generation [Member]

Nature of Business

Power Generation Capacity, Megawatts

[1]

1,945

Utility-Scale Solar

Nature of Business

Power Generation Capacity, Megawatts

[1]

482

NRG Yield [Member] | NRG Yield [Member]

Nature of Business

Sale of Stock, Number of Shares Issued in Transaction | shares

28,198,000

22,511,250

Sale of Stock, Number of Shares Acquired in Transaction | shares

19,011,250

Proceeds from Issuance Initial Public Offering | $

$ 395,000,000

NRG Yield LLC

Nature of Business

General and administrative | $

$ 0

[6]

0

[7],[8]

0

[9],[10]

Acquisition of businesses, net of cash acquired | $

0

[11]

0

[12],[13]

0

[14],[15]

Proceeds from the issuance of Class C and Class A units | $

$ 599,000,000

[11]

630,000,000

[12],[13]

$ 468,000,000

[14],[15]

NRG Yield LLC | NRG Yield, Inc. [Member]

Nature of Business

Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest

53.30%

44.90%

NRG Yield LLC | NRG

Nature of Business

Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest

55.10%

GenConn Middletown [Member] | Conventional Generation [Member]

Nature of Business

Equity Method Investment, Ownership Percentage

[16]

50.00%

Power Generation Capacity, Megawatts

[1],[16]

95

GenConn Devon [Member] | Conventional Generation [Member]

Nature of Business

Equity Method Investment, Ownership Percentage

[16]

50.00%

Power Generation Capacity, Megawatts

[1],[16]

95

Marsh Landing | Conventional Generation [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

720

El Segundo [Member] | Conventional Generation [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

550

Walnut Creek [Member] | Conventional Generation [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

485

Alpine [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

66

Avenal [Member] | Utility-Scale Solar

Nature of Business

Equity Method Investment, Ownership Percentage

50.00%

[16]

50.00%

49.95%

Power Generation Capacity, Megawatts

[1],[16]

23

Avra Valley [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

26

NRG Solar Blythe LLC [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

21

Borrego [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

26

NRG Solar Roadrunner LLC [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

20

CVSR [Member] | Utility-Scale Solar

Nature of Business

Equity Method Investment, Ownership Percentage

48.95%

Power Generation Capacity, Megawatts

[1]

122

RE Kansas South [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

20

TA - High Desert LLC [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

20

Desert Sunlight [Member] | Utility-Scale Solar

Nature of Business

Percentage of Ownership

25.00%

AZ DG Solar Projects | Distributed Solar

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

5

PFMG DG Solar Projects | Distributed Solar

Nature of Business

Percentage of Ownership

51.00%

Power Generation Capacity, Megawatts

[1]

4

Alta I [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

150

Alta II [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

150

Alta III [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

150

Alta IV [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

102

Alta V [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

168

Alta X [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

[17],[18]

100.00%

Power Generation Capacity, Megawatts

[1],[17],[18]

137

Alta XI [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

[17],[18]

100.00%

Power Generation Capacity, Megawatts

[1],[17],[18]

90

South Trent | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

101

Spanish Fork [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

75.00%

Power Generation Capacity, Megawatts

[1]

14

Laredo Ridge [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

80

Lookout [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

75.00%

Power Generation Capacity, Megawatts

[1]

29

Odin Wind Farm [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

74.90%

Power Generation Capacity, Megawatts

[1]

15

Taloga [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

130

Pinnacle [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

55

San Juan Mesa Wind Project, LLC [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

56.30%

Power Generation Capacity, Megawatts

[1]

68

Sleeping Bear [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

75.00%

Power Generation Capacity, Megawatts

[1]

71

Buffalo Bear [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

100.00%

Power Generation Capacity, Megawatts

[1]

19

Crosswinds [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

74.30%

Power Generation Capacity, Megawatts

[1]

16

Forward [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

75.00%

Power Generation Capacity, Megawatts

[1]

22

Goat Wind [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

74.90%

Power Generation Capacity, Megawatts

[1]

113

Elbow Creek [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

75.00%

Power Generation Capacity, Megawatts

[1]

92

Elkhorn Ridge Wind, LLC [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

50.30%

Power Generation Capacity, Megawatts

[1]

41

Hardin [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

74.30%

Power Generation Capacity, Megawatts

[1]

11

Spring Canyon II [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

[17]

90.10%

Power Generation Capacity, Megawatts

[1],[17]

29

Spring Canyon III [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

[17]

90.10%

Power Generation Capacity, Megawatts

[1],[17]

25

Wildorado [Member] | Wind Farms [Member]

Nature of Business

Percentage of Ownership

74.90%

Power Generation Capacity, Megawatts

[1]

121

November 2015 Drop Down Assets [Member]

Nature of Business

Payments to Acquire Businesses, Gross | $

$ 209,000,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt | $

193,000,000

198,000,000

Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value | $

$ 282,000,000

Business Acquisition, Percentage of Voting Interests Acquired

75.00%

Number of Facilities | $

12

November 2015 Drop Down Assets [Member] | Wind Farms [Member]

Nature of Business

Power Generation Capacity, Megawatts

814

January 2015 Drop Down Assets [Member]

Nature of Business

Acquisition of businesses, net of cash acquired | $

$ (489,000,000)

Business Combination, Consideration Transferred, Liabilities Incurred | $

737,000,000

Business Acquisition, Consideration Transferred, Working Capital | $

$ 9,000,000

Drop-down Acquisition [Member]

Nature of Business

Acquisition of businesses, net of cash acquired | $

$ (357,000,000)

$ (698,000,000)

(311,000,000)

Drop-down Acquisition [Member] | NRG Yield LLC

Nature of Business

Acquisition of businesses, net of cash acquired | $

0

[11]

0

[12],[13]

June 2014 Drop Down Assets [Member]

Nature of Business

Acquisition of businesses, net of cash acquired | $

(357,000,000)

Business Combination, Consideration Transferred, Liabilities Incurred | $

612,000,000

Business Acquisition, Consideration Transferred, Working Capital | $

$ 8,000,000

NRG | NRG Yield [Member]

Nature of Business

General and administrative | $

8,000,000

6,000,000

Affiliated Entity [Member]

Nature of Business

General and administrative | $

$ 3,000,000

$ 10,000,000

$ 8,000,000

Pacific Gas and Electric [Member] | Desert Sunlight [Member] | Utility-Scale Solar

Nature of Business

Power Generation Capacity, Megawatts

[1]

75

Southern California Edison [Member] | Desert Sunlight [Member] | Utility-Scale Solar

Nature of Business

Power Generation Capacity, Megawatts

[1]

63

Common Class B [Member] | NRG Yield LLC

Nature of Business

Sale of Stock, Percentage of Ownership after Transaction

100.00%

Common Class A [Member] | Public Shareholders [Member]

Nature of Business

Sale of Stock, Number of Shares Issued in Transaction | shares

12,075,000

Proceeds from the issuance of Class C and Class A units | $

$ 630,000,000

Common Class A [Member] | NRG Yield LLC

Nature of Business

Sale of Stock, Percentage of Ownership after Transaction

100.00%

Capital Unit, Class A [Member] | NRG Yield [Member] | NRG Yield [Member]

Nature of Business

Sale of Stock, Number of Shares Acquired in Transaction | shares

3,500,000

Proceeds from Issuance Initial Public Offering | $

$ 73,000,000

Common Class C [Member]

Nature of Business

Proceeds from the issuance of Class C and Class A units | $

$ 599,000,000

Subsequent Event [Member] | November 2015 Drop Down Assets [Member]

Nature of Business

Payments to Acquire Businesses, Gross | $

$ 207,000,000

Business Acquisition, Consideration Transferred, Working Capital | $

$ 2,000,000

[1]

(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.

[2]

(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.

[3]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[4]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

[5]

(e) For thermal energy, net capacity represents MWt for steam or chilled water and excludes 134 MWt available under the right-to-use provisions contained in agreements between two of the Company's thermal facilities and certain of its customers.

[6]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[7]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[8]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[9]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[10]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[11]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[12]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[13]

(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[14]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[15]

(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[16]

(b) On September 30, 2015, the Company acquired NRG's remaining 0.05% for an immaterial amount.

[17]

(c) Projects are part of tax equity arrangements, as further described in Note 2, Summary of Significant Accounting Policies

[18]

(d) PPA began on January 1, 2016.

Summary of Significant Accoun62

Summary of Significant Accounting Policies (Details) - USD ($)		Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Summary of Significant Accounting Policies [Line Items]
Interest Costs Capitalized				$ 1,000,000	$ 0		$ 18,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]		$ 50,000,000	50,000,000	58,000,000
Noncontrolling interest			$ 460,000,000	460,000,000	334,000,000	[2]
Contributions from noncontrolling interest for Alta Wind X-X1 TE Holdco				122,000,000	190,000,000	[3]	0	[3]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest				$ (52,000,000)	1,000,000		(2,000,000)
Dividends Payable, Date Declared				Feb. 17, 2016
Common Stock, Dividends, Per Share, Declared			$ 0
Dividends Payable, Date to be Paid				Mar. 15, 2016
Operating Leases, Income Statement, Contingent Revenue				$ 332,000,000	212,000,000		$ 88,000,000
Project Level Subsidiaries [Member]
Summary of Significant Accounting Policies [Line Items]
Other Cash Equivalents, at Carrying Value			$ 93,000,000	93,000,000	74,000,000
Alta X and XI TE Holdco [Member] | Financial Institutions [Member]
Summary of Significant Accounting Policies [Line Items]
Contributions from noncontrolling interest for Alta Wind X-X1 TE Holdco		$ 119,000,000		122,000,000	$ 190,000,000
Spring Canyon [Member] | Financial Institutions [Member]
Summary of Significant Accounting Policies [Line Items]
Noncontrolling interest acquired in Spring Canyon acquisition				74,000,000
Long-Term Debt, Current [Member]
Summary of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			2,000,000	2,000,000
Operating Expense [Member]
Summary of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			7,000,000	7,000,000
Cash Distribution [Member]
Summary of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			2,000,000	2,000,000
Reserves [Member]
Summary of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			$ 37,000,000	$ 37,000,000
[1]	(c) Total net debt reflects the reclassification of deferred financing costs to reduce long-term debt as further described in Note 2, Summary of Significant Accounting Policies.
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Summary of Significant Accoun63

Summary of Significant Accounting Policies ARO (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	$ 39	$ 29

Business Acquisitions - Novembe

Business Acquisitions - November 2015 Drop Down (Details)		Feb. 19, 2016USD ($)	Nov. 03, 2015USD ($)	Dec. 31, 2015USD ($)MW	Sep. 30, 2015USD ($)	[1]	Jun. 30, 2015USD ($)	[1]	Mar. 31, 2015USD ($)	[1]	Dec. 31, 2014USD ($)		Sep. 30, 2014USD ($)	[2]	Jun. 30, 2014USD ($)	[2]	Mar. 31, 2014USD ($)	[2]	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)		Nov. 02, 2015USD ($)MW
Business Acquisition [Line Items]
Revenues				$ 209,000,000	$ 225,000,000		$ 235,000,000		$ 200,000,000		$ 212,000,000	[2]	$ 199,000,000		$ 194,000,000		$ 141,000,000		$ 869,000,000	$ 746,000,000	[3]	$ 387,000,000	[3]
Total current assets				321,000,000							656,000,000	[4]							321,000,000	656,000,000	[4]
Business Acquisition, Consideration Transferred, Working Capital											1,000,000									1,000,000
Other Assets				$ 2,231,000,000							1,896,000,000	[4]							$ 2,231,000,000	1,896,000,000	[4]
Long-term Debt and Capital Lease Obligations, Including Current Maturities											4,938,000,000									4,938,000,000
Power Generation Capacity, Megawatts | MW	[5],[6]			4,559															4,559
Net property, plant and equipment				$ 5,056,000,000							5,175,000,000	[4]							$ 5,056,000,000	5,175,000,000	[4]
Total Assets				7,608,000,000							7,727,000,000	[4]							7,608,000,000	7,727,000,000	[4]
Long-term Debt				4,885,000,000							4,996,000,000								4,885,000,000	4,996,000,000
Other current and non-current liabilities											313,000,000									313,000,000
Liabilities				5,174,000,000							5,251,000,000	[7]							5,174,000,000	5,251,000,000	[7]
Net Assets											2,476,000,000									2,476,000,000
Operating Income (Loss)				67,000,000	81,000,000		85,000,000		46,000,000		70,000,000	[2]	85,000,000		60,000,000		51,000,000		279,000,000	266,000,000	[3]	158,000,000	[3]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				21,000,000	36,000,000		44,000,000		(23,000,000)		(6,000,000)	[2]	48,000,000		39,000,000		27,000,000		78,000,000	108,000,000	[3],[8],[9]	134,000,000	[3],[8],[9],[10]
November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Revenues																				57,000,000		8,000,000
Business Acquisition, Percentage of Voting Interests Acquired																								75.00%
Payments to Acquire Businesses, Gross			$ 209,000,000
Business Combination, Assets Acquired, Current Assets			30,000,000								66,000,000									66,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			669,000,000								709,000,000									709,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets			177,000,000								184,000,000									184,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			876,000,000								959,000,000									959,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			193,000,000								198,000,000									198,000,000
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value			282,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Current and Non-Current Liabilities			32,000,000								21,000,000									21,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			225,000,000								219,000,000									219,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 369,000,000								740,000,000	[11]								740,000,000	[11]
Business Acquisition, Pro Forma Revenue																				768,000,000
Business Acquisition, Pro Forma Net Income(Loss), Including Portion Attributable to Noncontrolling Interest																				105,000,000
Number of Facilities																								12
Operating Income (Loss)																				(6,000,000)		(9,000,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																				(13,000,000)		(9,000,000)
Financial Institutions [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Taxable Income Allocation, Pre-Flip																								99.00%
Taxable Income Allocation, Post-Flip																								8.53%
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value				$ 159,000,000							199,000,000								$ 159,000,000	199,000,000
NRG [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value											135,000,000									135,000,000
Pre-Flip Point [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Percentage of Cash Available for Distributions																								75.00%
Post-Flip Point [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Percentage of Cash Available for Distributions																								68.60%
Pre-determined Date Through Flip Point If Flip Has Not Occured [Member] | Financial Institutions [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Percentage of Cash Available for Distributions																								100.00%
Wind Farms [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[5]			1,999															1,999
Wind Farms [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW																								814
Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Revenues					209,000,000		217,000,000		180,000,000		192,000,000	[2]	184,000,000		173,000,000		140,000,000			689,000,000		379,000,000
Total current assets											590,000,000									590,000,000
Net property, plant and equipment											4,466,000,000									4,466,000,000
Assets, Noncurrent	[12]										1,712,000,000									1,712,000,000
Total Assets											6,768,000,000									6,768,000,000
Long-term Debt	[12]										4,740,000,000									4,740,000,000
Other current and non-current liabilities											292,000,000									292,000,000
Liabilities											5,032,000,000									5,032,000,000
Net Assets											1,736,000,000									1,736,000,000
Operating Income (Loss)					87,000,000		87,000,000		48,000,000		69,000,000	[2]	85,000,000		64,000,000		54,000,000			272,000,000		167,000,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest					$ 46,000,000		$ 47,000,000		$ (19,000,000)		$ (5,000,000)	[2]	$ 51,000,000		$ 45,000,000		$ 30,000,000			$ 121,000,000		$ 143,000,000
Subsequent Event [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 207,000,000
Business Acquisition, Consideration Transferred, Working Capital		$ 2,000,000
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[6]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[7]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[9]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[10]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[11]	(b) Net Assets for NRG Wind TE Holdco as of December 31, 2014, includes noncontrolling interest of $199 million attributable to the TE Investor and $135 million attributable to NRG.
[12]	(a) Retrospectively adjusted to reclassify deferred financing costs in accordance with ASU 2015-03 as further discussed in Note 2, Summary of Significant Accounting Policies.

Business Acquisitions - Desert

Business Acquisitions - Desert Sunlight/Spring Canyon/Fuel Cell (Details)		Nov. 03, 2015USD ($)	Jun. 30, 2015USD ($)	May. 08, 2015	Apr. 30, 2015	Aug. 12, 2014USD ($)	Dec. 31, 2015MW	Nov. 02, 2015USD ($)MW	Jun. 29, 2015USD ($)	May. 07, 2015
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts	[1],[2]						4,559
November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Number of Facilities | $								12
Business Acquisition, Percentage of Voting Interests Acquired								75.00%
Payments to Acquire Businesses, Gross | $		$ 209,000,000
Alta Wind Portfolio [Member]
Business Acquisition [Line Items]
Number of Facilities						7
Payments to Acquire Businesses, Gross | $						$ 923,000,000
Utility-Scale Solar [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts	[1]						482
Wind Farms [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts	[1]						1,999
Wind Farms [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts								814
Wind Farms [Member] | Spring Canyon [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired										90.10%
Wind Farms [Member] | Spring Canyon II [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts							32
Wind Farms [Member] | Spring Canyon III [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts							28
Thermal [Member]
Business Acquisition [Line Items]
Percentage of Ownership	[3]						100.00%
Power Generation Capacity, Megawatts	[1]						124
Desert Sunlight [Member]
Business Acquisition [Line Items]
Number of Facilities | $									2
Payments to Acquire Equity Method Investments | $			$ 285,000,000
Power Generation Capacity, Megawatts							550
UB Fuel Cell [Member] | Thermal [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts							1.4
Supply Commitment Arrangement [Domain] | Spring Canyon [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				24 years
Supply Commitment Arrangement [Domain] | UB Fuel Cell [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					12 years
Pacific Gas and Electric [Member] | Supply Commitment Arrangement [Domain] | Desert Sunlight [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			25 years
Southern California Edison [Member] | Supply Commitment Arrangement [Domain] | Desert Sunlight [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			20 years
Financial Institutions [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Taxable Income Allocation, Pre-Flip								99.00%
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(e) For thermal energy, net capacity represents MWt for steam or chilled water and excludes 134 MWt available under the right-to-use provisions contained in agreements between two of the Company's thermal facilities and certain of its customers.

Business Acquisitions - January

Business Acquisitions - January 2015 Drop Downs (Details) $ in Millions		Jan. 02, 2015USD ($)	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)	Nov. 03, 2015USD ($)	Nov. 02, 2015MW
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]		4,559
Acquisition of businesses, net of cash acquired			$ (37)	$ (901)	[3]	$ (120)
Business Acquisition, Consideration Transferred, Working Capital				1
Total current assets			321	656	[4]
Property, Plant and Equipment, Net			5,056	5,175	[4]
Total Assets			7,608	7,727	[4]
Long-term Debt			4,885	4,996
Other current and non-current liabilities				313
Total Liabilities			5,174	5,251	[5]
Net Assets				2,476
November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Business Combination, Assets Acquired, Current Assets				66			$ 30
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				709			669
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets				184			177
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				959			876
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt				198			193
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Current and Non-Current Liabilities				21			32
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				219			225
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				740	[6]		$ 369
Business Acquisition, Pro Forma Revenue				768
Business Acquisition, Pro Forma Net Income(Loss), Including Portion Attributable to Noncontrolling Interest				105
Business Combination, Revenue of Acquiree since Acquisition Date, Actual			14
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			1
January 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ (489)
Business Acquisition, Consideration Transferred, Working Capital		9
Business Combination, Consideration Transferred, Liabilities Incurred		737
Business Combination, Separately Recognized Transactions, Net Gains and Losses		61
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax		$ 23
Business Acquisition, Pro Forma Revenue				772
Business Acquisition, Pro Forma Net Income(Loss), Including Portion Attributable to Noncontrolling Interest				100
Business Combination, Revenue of Acquiree since Acquisition Date, Actual			144
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ 44
Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Total current assets				590
Property, Plant and Equipment, Net				4,466
Assets, Noncurrent	[7]			1,712
Total Assets				6,768
Long-term Debt	[7]			4,740
Other current and non-current liabilities				292
Total Liabilities				5,032
Net Assets				$ 1,736
Conventional Generation [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		1,945
Conventional Generation [Member] | Walnut Creek [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		485
Wind Farms [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		1,999
Wind Farms [Member] | November 2015 Drop Down Assets [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW								814
Wind Farms [Member] | Pinnacle [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		55
Wind Farms [Member] | Buffalo Bear [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		19
Wind Farms [Member] | Taloga [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		130
Wind Farms [Member] | Laredo Ridge [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		80
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(b) Net Assets for NRG Wind TE Holdco as of December 31, 2014, includes noncontrolling interest of $199 million attributable to the TE Investor and $135 million attributable to NRG.
[7]	(a) Retrospectively adjusted to reclassify deferred financing costs in accordance with ASU 2015-03 as further discussed in Note 2, Summary of Significant Accounting Policies.

Business Acquisitions - Alta Wi

Business Acquisitions - Alta Wind (Details) $ / shares in Units, $ in Millions		Aug. 12, 2014USD ($)MW	Aug. 05, 2014USD ($)	Jul. 29, 2014USD ($)shares	Dec. 31, 2014USD ($)	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)		Jul. 30, 2014$ / shares
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]					4,559
Acquisition-related transaction and integration costs						$ 3	$ 4	[3]	$ 0	[3]
Business Combination, Consideration Transferred						37	901	[4]	120
Business Acquisition, Consideration Transferred, Working Capital					$ 1		1
Proceeds from the issuance of Class C and Class A units						599	630	[4]	468	[4]
Alta Wind Portfolio [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 22
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash					0
Number of Facilities		7
Payments to Acquire Businesses, Gross		$ 923
Acquisition-related transaction and integration costs						$ 2
Business Combination, Consideration Transferred		870
Business Acquisition, Consideration Transferred, Working Capital		53
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		1,591
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current and Non-Current Assets		49
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets					(2)
Business Acquisition, Purchase Price Allocation, Other Assets, Adjusted		47
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		1,304
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment					6
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment, Adjusted		1,310
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		1,177
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles					(6)
Business Acquisition, Purchase Price Allocation, Intangible Assets, Other than Goodwill, Adjusted		1,171
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		2,552
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Total Assets					(2)
Business Acquisition, Purchase Price Allocation, Assets Acquired, Adjusted		2,550
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities Longterm Debt					0
Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities, Long-term Debt, Adjusted		1,591
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current and Non-Current Liabilities		38
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current and Noncurrent Liabilities					(2)
Business Acquisition, Purchase Price Allocation, Current and Non-current Liabilities, Adjusted		36
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		1,629
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					(2)
Business Acquisition, Purchase Price Allocation, Liabilities Assumed, Adjusted		1,627
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		923
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Assets Acquired					$ 0
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net Adjusted		$ 923
Alta Wind Holdings [Member]
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW		947
Leasehold Rights [Member] | Alta Wind Portfolio [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						18 years
Public Shareholders [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Sale of Stock, Number of Shares Issued in Transaction | shares				12,075,000
Share Price | $ / shares											$ 54
Proceeds from the issuance of Class C and Class A units				$ 630
NRG Yield Operating LLC [Member]
Business Acquisition [Line Items]
Acquisition-related transaction and integration costs						$ 3	4	[5]
Business Combination, Consideration Transferred						37	901	[6]	120	[7]
Proceeds from the issuance of Class C and Class A units						$ 0	$ 0	[6]	$ 0	[7]
5.375% Senior Notes due in 2024 [Member]
Business Acquisition [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[8]					5.375%
5.375% Senior Notes due in 2024 [Member] | NRG Yield Operating LLC [Member]
Business Acquisition [Line Items]
Proceeds from Issuance of Senior Long-term Debt			$ 500
Debt Instrument, Interest Rate, Stated Percentage			5.375%
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[7]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) As of December 31, 2015, L+ equals 3 month LIBOR plus x%, except for the NRG Marsh Landing term loan, Walnut Creek term loan, and the RevolvingCredit Facility where L+ equals 1 month LIBOR plus x% and Kansas South where L+ equals 6 month LIBOR plus x%.

Business Acquisitions - June 20

Business Acquisitions - June 2014 Drop Downs (Details) $ in Millions		Jun. 30, 2014USD ($)	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)
Business Acquisition [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]		4,559
Business Combination, Consideration Transferred			$ 37	$ 901	[3]	$ 120
Business Acquisition, Consideration Transferred, Working Capital				$ 1
June 2014 Drop Down Assets [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 357
Business Acquisitions, Consideration Transferred, Purchase Price		349
Business Acquisition, Consideration Transferred, Working Capital		8
Business Combination, Consideration Transferred, Liabilities Incurred		$ 612
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Business Acquisitions Business

Business Acquisitions Business Acquisitions - Energy Systems (Details) - USD ($) $ in Millions	Dec. 31, 2013	Dec. 31, 2014
Business Acquisition [Line Items]
Business Acquisition, Consideration Transferred, Working Capital		$ 1
Energy Systems Company [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 120
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		60
Customer Contracts [Member] | Energy Systems Company [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 59

Property, Plant and Equipment70

Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013	[2]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,757	$ 5,613	[1]
Under construction	9	9	[1]
Less accumulated depreciation	(701)	(438)	[1]
Property, Plant and Equipment, Net	5,056	5,175	[1]
Proceeds from Renewable Energy Grants	0	137	[2]	$ 25
Support Equipment and Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,597	5,454
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 151	$ 150
Minimum [Member] | Support Equipment and Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Maximum [Member] | Support Equipment and Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Variable Interest Entities Vari

Variable Interest Entities Variable Interest Entities - Alta TE Holdco (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013	[2]	Nov. 03, 2015
Schedule of Equity Method Investments [Line Items]
Total other assets		$ 2,231	$ 1,896	[1]
Proceeds from Noncontrolling Interests		122	190	[2]	$ 0
Property, Plant and Equipment, Net		5,056	5,175	[1]
Total Assets		7,608	7,727	[1]
Total Liabilities		5,174	5,251	[3]
Net Assets			2,476
November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total other assets		204
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		663
Total Assets		869
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							$ 220
Total Liabilities		220
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							$ 268
Net Assets		381
Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Total other assets		18
Property, Plant and Equipment, Net		484
Total Assets		789
Total Liabilities		10
Net Assets		$ 658
Alta X and XI TE Holdco [Member] | Financial Institutions [Member]
Schedule of Equity Method Investments [Line Items]
Taxable Income Allocation, Pre-Flip		99.00%
Taxable Income Allocation, Post-Flip		5.00%
Proceeds from Noncontrolling Interests	$ 119	$ 122	190
First Year [Member] | Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		100.00%
Second Year through Flip Point [Member] | Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		94.34%
Post-Flip Point [Member] | Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		97.12%
Pre-determined Date Through Flip Point If Flip Has Not Occured [Member] | Alta X and XI TE Holdco [Member] | Financial Institutions [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		100.00%
Noncontrolling Interest [Member] | Alta X and XI TE Holdco [Member] | Financial Institutions [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Noncontrolling Interests		$ 122	$ 190
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Variable Interest Entities Va72

Variable Interest Entities Variable Interest Entities - DGPV (Details) $ in Millions		May. 08, 2015generatingunitMW	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]		4,559
Payments to Acquire Businesses and Interest in Affiliates			$ 360	$ (7)	[3]	$ 34	[3]
Business Combination, Consideration Transferred			37	901	[3]	$ 120
Equity investments in affiliates			798	$ 410	[4]
NRG DGPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Equity investments in affiliates	[5]		71
NRG DGPV Fund 1 [Member]
Schedule of Equity Method Investments [Line Items]
Remaining Lease Term		19 years
Tax Equity Financed Portfolio of Leases - Community Solar [Member] | NRG DGPV Fund 1 [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW		8
Remaining Lease Term		20 years
Number of Solar Leases in Portfolio | generatingunit		10
Equity investments in affiliates			17
Tax Equity Financed Portfolio of Leases - Commercial PV [Member] | NRG DGPV Fund 2 [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW		37
Number of Solar Leases in Portfolio | generatingunit		12
Due to Affiliate			44
Equity investments in affiliates			$ 55
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(d) NRG DGPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below.

Variable Interest Entities Va73

Variable Interest Entities Variable Interest Entities - RPV (Details) $ in Millions		Apr. 09, 2015generatingunitMW	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)	[3]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]		4,559
Equity investments in affiliates			$ 798	$ 410
NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Equity investments in affiliates	[4]		58
Existing Portfolio of Leases [Member] | NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Number of Solar Leases in Portfolio | generatingunit		2,200
Power Generation Capacity, Megawatts | MW		17
Remaining Lease Term		17 years
Equity investments in affiliates			26
Tax Equity Financed Portfolio of Leases [Member] | NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Number of Solar Leases in Portfolio | generatingunit		5,700
Power Generation Capacity, Megawatts | MW		40
Equity investments in affiliates			36
Minimum [Member] | Tax Equity Financed Portfolio of Leases [Member] | NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Remaining Lease Term		17 years
Maximum [Member] | Tax Equity Financed Portfolio of Leases [Member] | NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Remaining Lease Term		20 years
Equity investments in affiliates			$ 150
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(e) NRG RPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below.

Variable Interest Entities Va74

Variable Interest Entities Variable Interest Entities - GenConn (Details) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015USD ($)MW	Sep. 30, 2015USD ($)		Jun. 30, 2015USD ($)	[4]	Mar. 31, 2015USD ($)	[4]	Dec. 31, 2014USD ($)		Sep. 30, 2014USD ($)	[5]	Jun. 30, 2014USD ($)	[5]	Mar. 31, 2014USD ($)	[5]	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]	4,559															4,559
Equity investments in affiliates		$ 798							$ 410	[3]							$ 798	$ 410	[3]
Long-term Debt		4,885							4,996								4,885	4,996
Revenues		209	$ 225	[4]	$ 235		$ 200		212	[5]	$ 199		$ 194		$ 141		869	746	[6]	$ 387	[6]
Operating Income (Loss)		67	81	[4]	85		46		70	[5]	85		60		51		279	266	[6]	158	[6]
Net Income (Loss)		21	$ 36	[4]	$ 44		$ (23)		(6)	[5]	$ 48		$ 39		$ 27		78	108	[6],[7],[8]	134	[6],[7],[8],[9]
Total current assets		321							656	[3]							321	656	[3]
Current Liabilities		455							408	[10]							455	408	[10]
Total non-current liabilities		$ 4,719							4,843	[10]							$ 4,719	4,843	[10]
GCE Holding LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%	49.95%														50.00%
Equity investments in affiliates	[11],[12]	$ 110															$ 110
Revenues																	78	82		80
Operating Income (Loss)																	40	(40)		44
Net Income (Loss)																	28	28		$ 31
Total current assets		36							33								36	33
Assets, Noncurrent		416							438								416	438
Current Liabilities		16							20								16	20
Total non-current liabilities		$ 215							223								$ 215	223
Fixed Rate Notes [Member] | Gen Conn Energy LLC [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									$ 237									$ 237
Debt Instrument, Interest Rate, Stated Percentage									4.73%									4.73%
Long-term Debt									$ 220									$ 220
Working Capital Facility [Member] | Gen Conn Energy LLC [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									$ 35									$ 35
Debt Instrument, Interest Rate, Stated Percentage									1.875%									1.875%
Conventional Generation [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1]	1,945															1,945
GenConn Facility [Member] | Working Capital Facility [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding		$ 14															$ 14
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[5]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[7]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[9]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[10]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[11]	(a) GenConn is a variable interest entity.
[12]	(b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015.

Variable Interest Entities Va75

Variable Interest Entities Variable Interest Entities - Desert Sunlight (Details)		Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)MW	Sep. 30, 2015USD ($)	[1]	Jun. 30, 2015USD ($)	[1]	Mar. 31, 2015USD ($)	[1]	Dec. 31, 2014USD ($)		Sep. 30, 2014USD ($)	[2]	Jun. 30, 2014USD ($)	[2]	Mar. 31, 2014USD ($)	[2]	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)	[3]	Jun. 29, 2015USD ($)
Schedule of Equity Method Investments [Line Items]
Pro-Rate Share of Debt Held by Unconsolidated Affiliates			$ 842,000,000															$ 842,000,000
Business Acquisition, Consideration Transferred, Working Capital										$ 1,000,000									$ 1,000,000
Long-term Debt			4,885,000,000							4,996,000,000								4,885,000,000	4,996,000,000
Revenues			209,000,000	$ 225,000,000		$ 235,000,000		$ 200,000,000		212,000,000	[2]	$ 199,000,000		$ 194,000,000		$ 141,000,000		869,000,000	746,000,000	[3]	$ 387,000,000
Operating Income (Loss)			(67,000,000)	(81,000,000)		(85,000,000)		(46,000,000)		(70,000,000)	[2]	(85,000,000)		(60,000,000)		(51,000,000)		(279,000,000)	(266,000,000)	[3]	(158,000,000)
Net Income (Loss)			21,000,000	$ 36,000,000		$ 44,000,000		$ (23,000,000)		(6,000,000)	[2]	$ 48,000,000		$ 39,000,000		$ 27,000,000		78,000,000	108,000,000	[3],[4],[5]	$ 134,000,000	[4],[5],[6]
Total current assets			321,000,000							656,000,000	[7]							321,000,000	656,000,000	[7]
Current Liabilities			455,000,000							408,000,000	[8]							455,000,000	408,000,000	[8]
Total non-current liabilities			$ 4,719,000,000							4,843,000,000	[8]							$ 4,719,000,000	4,843,000,000	[8]
Power Generation Capacity, Megawatts | MW	[9],[10]		4,559															4,559
Equity investments in affiliates			$ 798,000,000							410,000,000	[7]							$ 798,000,000	410,000,000	[7]
Desert Sunlight [Member]
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Equity Method Investments		$ 285,000,000
Business Acquisition, Consideration Transferred, Working Capital																							$ 171,000,000
Long-term Debt			1,100,000,000							$ 1,500,000,000								1,100,000,000	$ 1,500,000,000
Revenues																		206,000,000
Operating Income (Loss)																		(124,000,000)
Net Income (Loss)																		73,000,000
Total current assets			310,000,000															310,000,000
Assets, Noncurrent			1,435,000,000															1,435,000,000
Current Liabilities			82,000,000															82,000,000
Total non-current liabilities			$ 1,086,000,000															$ 1,086,000,000
Number of Facilities																							2
Power Generation Capacity, Megawatts | MW			550															550
Equity investments in affiliates			$ 291,000,000															$ 291,000,000
Utility-Scale Solar [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[9]		482															482
Utility-Scale Solar [Member] | Desert Sunlight [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage			25.00%															25.00%
Supply Commitment Arrangement [Domain] | Pacific Gas and Electric [Member] | Desert Sunlight [Member]
Schedule of Equity Method Investments [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		25 years
Supply Commitment Arrangement [Domain] | Southern California Edison [Member] | Desert Sunlight [Member]
Schedule of Equity Method Investments [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		20 years
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[7]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[9]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[10]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.

Variable Interest Entities Equi

Variable Interest Entities Equity Method Investments - Avenal (Details) $ in Millions		1 Months Ended
		Apr. 30, 2010	Dec. 31, 2015USD ($)MW		Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014USD ($)		Sep. 22, 2010USD ($)
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1],[2]		4,559
Long-term Debt			$ 4,885				$ 4,996
Equity investments in affiliates			$ 798				410	[3]
CVSR [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage			48.95%
Equity investments in affiliates			$ 101
Avenal [Member]
Schedule of Equity Method Investments [Line Items]
Notes and Loans Payable									$ 35
Debt Instrument, Interest Rate, Stated Percentage									4.50%
Equity Method Investment, Ownership Percentage	[4]		50.00%
Power Purchase Agreement Period		20 years
Power Generation Capacity, Megawatts | MW			45
Equity investments in affiliates	[4]		$ (9)
EurusEnergy [Member] | Avenal [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage			50.00%
SyndicateofBanks [Member] | Avenal [Member]
Schedule of Equity Method Investments [Line Items]
Long-term Debt			$ 143				$ 107		$ 209
Utility-Scale Solar [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[1]		482
Utility-Scale Solar [Member] | Avenal [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage			50.00%	[5]	50.00%	49.95%
Power Generation Capacity, Megawatts | MW	[1],[5]		23
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015.
[5]	(b) On September 30, 2015, the Company acquired NRG's remaining 0.05% for an immaterial amount.

Variable Interest Entities Eq77

Variable Interest Entities Equity Method Investments - CVSR (Details) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015USD ($)MW	Sep. 30, 2015USD ($)	[1]	Jun. 30, 2015USD ($)	[1]	Mar. 31, 2015USD ($)	[1]	Dec. 31, 2014USD ($)		Sep. 30, 2014USD ($)	[2]	Jun. 30, 2014USD ($)	[2]	Mar. 31, 2014USD ($)	[2]	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)		Jan. 31, 2014USD ($)	Sep. 30, 2011USD ($)
Schedule of Equity Method Investments [Line Items]
Revenues		$ 209	$ 225		$ 235		$ 200		$ 212	[2]	$ 199		$ 194		$ 141		$ 869	$ 746	[3]	$ 387	[3]
Power Generation Capacity, Megawatts | MW	[4],[5]	4,559															4,559
Equity investments in affiliates		$ 798							410	[6]							$ 798	410	[6]
Operating Income (Loss)		67	81		85		46		70	[2]	85		60		51		279	266	[3]	158	[3]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		21	$ 36		$ 44		$ (23)		(6)	[2]	$ 48		$ 39		$ 27		78	108	[3],[7],[8]	134	[3],[7],[8],[9]
Total current assets		321							656	[6]							321	656	[6]
Current Liabilities		455							408	[10]							455	408	[10]
Total non-current liabilities		$ 4,719							4,843	[10]							4,719	4,843	[10]
CVSR [Member]
Schedule of Equity Method Investments [Line Items]
Revenues																	$ 83	82		47
Equity Method Investment, Ownership Percentage		48.95%															48.95%
Equity investments in affiliates		$ 101															$ 101
Operating Income (Loss)																	43	40		22
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																	19	17		$ 4
Total current assets		98							173								98	173
Assets, Noncurrent		917							868								917	868
Current Liabilities		33							33								33	33
Total non-current liabilities		775							799								775	799
CVSR [Member]
Schedule of Equity Method Investments [Line Items]
Renewable energy grant, gross																						$ 307
Renewable energy grants, net																						$ 285
CVSR Financing Agreement [Member]
Schedule of Equity Method Investments [Line Items]
Other Borrowings		$ 793							$ 815								$ 793	$ 815
CVSR Financing Agreement [Member] | High Plains II [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																							$ 1,200
Debt Instrument, Basis Spread on Variable Rate																	0.375%
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[5]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[7]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[9]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[10]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Variable Interest Entities Va78

Variable Interest Entities Variable Interest Entity - NRG Wind TE Holdco (Details)		Feb. 19, 2016USD ($)	Nov. 03, 2015USD ($)	Dec. 31, 2015USD ($)MW	Nov. 02, 2015USD ($)MW	Dec. 31, 2014USD ($)
Schedule of Equity Method Investments [Line Items]
Equity investments in affiliates				$ 798,000,000		$ 410,000,000	[1]
Other Assets				$ 2,231,000,000		1,896,000,000	[1]
Power Generation Capacity, Megawatts | MW	[2],[3]			4,559
Business Acquisition, Consideration Transferred, Working Capital						1,000,000
Total Assets				$ 7,608,000,000		7,727,000,000	[1]
Liabilities				$ 5,174,000,000		5,251,000,000	[4]
Net Assets						2,476,000,000
San Juan Mesa Wind Project, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Ownership	[5]			56.30%
Equity investments in affiliates	[5]			$ 80,000,000
Equity Method Investment, Ownership Percentage				75.00%
Elkhorn Ridge Wind, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Ownership	[5]			50.30%
Equity investments in affiliates	[5]			$ 96,000,000
Equity Method Investment, Ownership Percentage				66.70%
November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			$ 669,000,000			709,000,000
Business Acquisition, Percentage of Voting Interests Acquired					75.00%
Number of Facilities					12
Payments to Acquire Businesses, Gross			209,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			193,000,000			198,000,000
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value			282,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			225,000,000			219,000,000
Wind Farms [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[2]			1,999
Wind Farms [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW					814
Financial Institutions [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value				$ 159,000,000		$ 199,000,000
Taxable Income Allocation, Pre-Flip					99.00%
Taxable Income Allocation, Post-Flip					8.53%
Pre-Flip Point [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions					75.00%
Post-Flip Point [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions					68.60%
Pre-determined Date Through Flip Point If Flip Has Not Occured [Member] | Financial Institutions [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions					100.00%
November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Other Assets				204,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				663,000,000
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value			268,000,000
Total Assets				869,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			$ 220,000,000
Liabilities				220,000,000
Net Assets				$ 381,000,000
Subsequent Event [Member] | November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Businesses, Gross		$ 207,000,000
Business Acquisition, Consideration Transferred, Working Capital		$ 2,000,000
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[3]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(c) San Juan Mesa and Elkhorn Ridge are part of the TE Wind Holdco tax equity structure, as described below. San Juan Mesa and Elkhorn Ridge are owned 75% and 66.7%, respectively, by TE Wind Holdco. The Company owns 75% of the Class B interests in TE Wind Holdco.

Variable Interest Entities Va79

Variable Interest Entities Variable Interest Entities - Undistributed earnings from equity investments (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Consideration Transferred, Working Capital		$ 1
GCE Holding LLC [Member]
Schedule of Equity Method Investments [Line Items]
Retained Earnings, Undistributed Earnings from Equity Method Investees	$ 0	$ 17

Variable Interest Entities Eq80

Variable Interest Entities Equity Methods and VIE (Details) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015USD ($)MW	Sep. 30, 2015USD ($)		Jun. 30, 2015USD ($)	[3]	Mar. 31, 2015USD ($)	[3]	Dec. 31, 2014USD ($)		Sep. 30, 2014USD ($)	[4]	Jun. 30, 2014USD ($)	[4]	Mar. 31, 2014USD ($)	[4]	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)		Dec. 31, 2013USD ($)		Nov. 03, 2015USD ($)	May. 07, 2015
Schedule of Equity Method Investments [Line Items]
Other Assets		$ 2,231							$ 1,896	[1]							$ 2,231	$ 1,896	[1]
Property, Plant and Equipment, Net		5,056							5,175	[1]							5,056	5,175	[1]
Total Assets		7,608							7,727	[1]							7,608	7,727	[1]
Liabilities		5,174							5,251	[2]							5,174	5,251	[2]
Revenues		209	$ 225	[3]	$ 235		$ 200		212	[4]	$ 199		$ 194		$ 141		869	746	[5]	$ 387	[5]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		21	36	[3]	44		(23)		(6)	[4]	48		39		27		78	108	[5],[6],[7]	134	[5],[6],[7],[8]
Total current assets		321							656	[1]							321	656	[1]
Current Liabilities		455							408	[2]							455	408	[2]
Operating Income (Loss)		67	$ 81	[3]	$ 85		$ 46		70	[4]	$ 85		$ 60		$ 51		279	266	[5]	158	[5]
Total non-current liabilities		4,719							4,843	[2]							4,719	4,843	[2]
Equity investments in affiliates		$ 798							410	[1]							$ 798	410	[1]
Power Generation Capacity, Megawatts | MW	[9],[10]	4,559															4,559
Net Assets									2,476									2,476
GCE Holding LLC [Member]
Schedule of Equity Method Investments [Line Items]
Revenues																	$ 78	82		80
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																	28	28		31
Total current assets		$ 36							33								36	33
Current Liabilities		16							20								16	20
Assets, Noncurrent		416							438								416	438
Operating Income (Loss)																	40	(40)		$ 44
Total non-current liabilities		$ 215							$ 223								$ 215	$ 223
Equity Method Investment, Ownership Percentage		50.00%	49.95%														50.00%
Equity investments in affiliates	[11],[12]	$ 110															$ 110
San Juan Mesa Wind Project, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		75.00%															75.00%
Percentage of Ownership	[13]	56.30%															56.30%
Equity investments in affiliates	[13]	$ 80															$ 80
NRG DGPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Ownership	[14]	95.00%															95.00%
Equity investments in affiliates	[14]	$ 71															$ 71
NRG RPV Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Ownership	[15]	95.00%															95.00%
Equity investments in affiliates	[15]	$ 58															$ 58
Wind Farms [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW	[9]	1,999															1,999
Wind Farms [Member] | Spring Canyon III [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW		28															28
Wind Farms [Member] | Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired																							90.10%
Wind Farms [Member] | Spring Canyon II [Member]
Schedule of Equity Method Investments [Line Items]
Power Generation Capacity, Megawatts | MW		32															32
November 2015 Drop Down Assets [Member]
Schedule of Equity Method Investments [Line Items]
Other Assets		$ 204															$ 204
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		663															663
Intangible Assets, Net (Excluding Goodwill)		2															2
Total Assets		869															869
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities																						$ 220
Liabilities		220															220
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value																						$ 268
Net Assets		381															381
Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Other Assets		3															3
Property, Plant and Equipment, Net		104															104
Intangible Assets, Net (Excluding Goodwill)		0															0
Total Assets		107															107
Liabilities		5															5
Noncontrolling Interest in Variable Interest Entity		70															70
Net Assets		32															32
Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Other Assets		18															18
Property, Plant and Equipment, Net		484															484
Intangible Assets, Net (Excluding Goodwill)		287															287
Total Assets		789															789
Liabilities		10															10
Noncontrolling Interest in Variable Interest Entity		121															121
Net Assets		$ 658															$ 658
Pre-Flip Point [Member] | Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		65.19%															65.19%
Post-Flip Point [Member] | Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		95.00%															95.00%
Post-Flip Point [Member] | Alta X and XI TE Holdco [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		97.12%															97.12%
Financial Institutions [Member] | Pre-Flip Point [Member] | Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		34.81%															34.81%
Financial Institutions [Member] | Post-Flip Point [Member] | Spring Canyon [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of Cash Available for Distributions		5.00%															5.00%
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[4]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[7]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[8]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[9]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[10]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[11]	(a) GenConn is a variable interest entity.
[12]	(b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015.
[13]	(c) San Juan Mesa and Elkhorn Ridge are part of the TE Wind Holdco tax equity structure, as described below. San Juan Mesa and Elkhorn Ridge are owned 75% and 66.7%, respectively, by TE Wind Holdco. The Company owns 75% of the Class B interests in TE Wind Holdco.
[14]	(d) NRG DGPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below.
[15]	(e) NRG RPV Holdco 1 LLC is a tax equity structure and is a VIE. The related allocations are described below.

Fair Value of Financial Instr81

Fair Value of Financial Instruments Fair Value of Financial Instruments - Balance Sheet Grouping (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt — affiliate	$ 618	$ 337	[1]
Long-term Debt and Capital Lease Obligations, Including Current Maturities		4,938
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financing Receivable, Net	17	21
Long-term Debt and Capital Lease Obligations, Including Current Maturities	4,267	4,659
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financing Receivable, Net	17	21
Long-term debt — affiliate	553	386
Long-term Debt and Capital Lease Obligations, Including Current Maturities	$ 4,181	$ 4,676
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Fair Value of Financial Instr82

Fair Value of Financial Instruments Fair Value of Financial Instruments - Recurring Fair Value (Details) - USD ($)		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets, Measured on Recurring Basis, Valuation Techniques, Impact of Credit Reserve to Fair Value		$ 1,000,000
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure		2,700,000,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	0	$ 4,000,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	100,000,000	129,000,000
Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset			2,000,000
Derivative Liability, Fair Value, Gross Liability			3,000,000
Commodity Contract [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	0	2,000,000
Derivative Liability, Fair Value, Gross Liability	[1]	2,000,000	3,000,000
Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset			2,000,000
Derivative Liability, Fair Value, Gross Liability			126,000,000
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	0	2,000,000
Derivative Liability, Fair Value, Gross Liability	[1]	$ 98,000,000	$ 126,000,000
[1]	(a) There were no assets or liabilities classified as Level 1 or Level 3 as of December 31, 2015, and 2014.

Fair Value of Financial Instr83

Fair Value of Financial Instruments Fair Value of Financial Instruments - Credit Risk and Derivative FV Measurements (Details) - USD ($)		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets, Measured on Recurring Basis, Valuation Techniques, Impact of Credit Reserve to Fair Value		$ 1,000,000
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure		$ 2,700,000,000
Estimated Counterparty Credit Risk Exposure to Certain Counterparties, Period		5 years
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 0	$ 0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	0	4,000,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	100,000,000	129,000,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net		$ 0	$ 0
[1]	(a) There were no assets or liabilities classified as Level 1 or Level 3 as of December 31, 2015, and 2014.

Accounting for Derivative Ins84

Accounting for Derivative Instruments and Hedging Activities - FV of Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 1,991
Derivative, Collateral, Right to Reclaim Cash	0	$ 0
Derivative, Collateral, Obligation to Return Cash	0	0
United States of America, Dollars | Interest [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,991	3,059
MMbtu [Member] | Natural Gas [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	4	2
Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability		3
Fair Value of Gross Derivative Assets/(Liabilities), Net		(1)
Derivative Asset, Fair Value, Gross Liability		0
Derivative Liability, Fair Value, Gross Asset		0
Derivative Asset Fair Value Gross Liability Net Of Derivative Liability Fair Value Gross Asset		0
Derivative Asset, Net Amount		2
Derivative Liability, Net Amount		3
Derivative Asset, Fair Value, Amount Offset Against Collateral Net Of Derivative Liability, Fair Value, Amount Offset Against Collateral		(1)
Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability		126
Fair Value of Gross Derivative Assets/(Liabilities), Net		(124)
Derivative Asset, Fair Value, Gross Liability		2
Derivative Liability, Fair Value, Gross Asset		2
Derivative Asset Fair Value Gross Liability Net Of Derivative Liability Fair Value Gross Asset		0
Derivative Asset, Net Amount		0
Derivative Liability, Net Amount		124
Derivative Asset, Fair Value, Amount Offset Against Collateral Net Of Derivative Liability, Fair Value, Amount Offset Against Collateral		(124)
Derivative Contract [Domain]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		4
Derivative Liability, Fair Value, Gross Liability	100	129
Fair Value of Gross Derivative Assets/(Liabilities), Net		(125)
Derivative Asset Fair Value Gross Liability Net Of Derivative Liability Fair Value Gross Asset		0
Derivative Asset, Fair Value, Amount Offset Against Collateral Net Of Derivative Liability, Fair Value, Amount Offset Against Collateral		(125)
Designated as Hedging Instrument [Member] | Interest Rate Contract Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		0
Derivative Liability, Fair Value, Gross Liability	34	44
Designated as Hedging Instrument [Member] | Interest Rate Contract Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability	56	57
Designated as Hedging Instrument [Member] | Derivative Contract [Domain]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability	90	101
Not Designated as Hedging Instrument [Member] | Interest Rate Contract Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		0
Derivative Liability, Fair Value, Gross Liability	3	5
Not Designated as Hedging Instrument [Member] | Interest Rate Contract Non Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		0
Derivative Liability, Fair Value, Gross Liability	5	20
Not Designated as Hedging Instrument [Member] | Commodity Contract Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability	2	3
Not Designated as Hedging Instrument [Member] | Derivative Contract [Domain]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		2
Derivative Liability, Fair Value, Gross Liability	$ 10	$ 28

Accounting for Derivative Ins85

Accounting for Derivative Instruments and Hedging Activities - AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 0	$ 0
Derivative, Collateral, Obligation to Return Cash	0	0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(85)	(67)	$ (1)	$ (48)
Mark-to-market of cash flow hedge accounting contracts	(34)	(80)	35
Losses expected to be realized from OCL during the next 12 months	16
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Reclassified from accumulated OCL to income due to realization of previously deferred amounts	$ 16	$ 14	$ 12

Accounting for Derivative Ins86

Accounting for Derivative Instruments and Hedging Activities - Impact on Statement of Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Derivatives	$ (18)	$ (66)	[1]	$ 47
Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Derivatives	16	(22)
Commodity Contract [Member] | Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Derivatives	$ (2)	$ 2
[1]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.

Intangible Assets Intangible 87

Intangible Assets Intangible Assets - (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 70
Contra Revenue Intangibles Amortization	54	$ 29
Amortization of Intangible Assets	55	30		$ 4
Finite-Lived Intangible Assets, Gross	1,455	1,462		113
Finite-Lived Intangible Assets, Other Changes	(7)	4
Finite-Lived Intangible Assets, Accumulated Amortization	93	38
Intangible assets, net	1,362	1,424	[1]
Finite-Lived Intangible Assets, Amortization Expense, Year Two	70
Finite-Lived Intangible Assets, Amortization Expense, Year Three	71
Finite-Lived Intangible Assets, Amortization Expense, Year Four	71
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 71
Finite-Lived Intangible Asset, Useful Life	20 years
Accumulated Amortization of Out of Market Contracts	$ 3
Emission Allowances [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	15	16		8
Finite-Lived Intangible Assets, Other Changes	(1)	1
Finite-Lived Intangible Assets, Accumulated Amortization	1	0
Intangible assets, net	14	16
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	4	4		4
Finite-Lived Intangible Assets, Other Changes	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	1	1
Intangible assets, net	3	3
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	15	15		15
Finite-Lived Intangible Assets, Other Changes	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	6	5
Intangible assets, net	9	10
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	66	66		66
Finite-Lived Intangible Assets, Other Changes	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	3	2
Intangible assets, net	63	64
Supply Commitment Arrangement [Domain]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,263	1,269		14
Finite-Lived Intangible Assets, Other Changes	(6)	3
Finite-Lived Intangible Assets, Accumulated Amortization	75	26
Intangible assets, net	1,188	1,243
Leasehold Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	86	86		0
Finite-Lived Intangible Assets, Other Changes	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	5	2
Intangible assets, net	81	84
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	6	6		$ 6
Finite-Lived Intangible Assets, Other Changes	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	2	2
Intangible assets, net	4	4
Out of Market Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization	$ 1
Alta Wind Portfolio [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		1,178
Alta Wind Portfolio [Member] | Emission Allowances [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
Alta Wind Portfolio [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
Alta Wind Portfolio [Member] | Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
Alta Wind Portfolio [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
Alta Wind Portfolio [Member] | Supply Commitment Arrangement [Domain]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		1,092
Alta Wind Portfolio [Member] | Leasehold Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		86
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	18 years
Alta Wind Portfolio [Member] | Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
January 2015 Drop Down Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		167
January 2015 Drop Down Assets [Member] | Emission Allowances [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		7
January 2015 Drop Down Assets [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
January 2015 Drop Down Assets [Member] | Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
January 2015 Drop Down Assets [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
January 2015 Drop Down Assets [Member] | Supply Commitment Arrangement [Domain]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		160
January 2015 Drop Down Assets [Member] | Leasehold Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		0
January 2015 Drop Down Assets [Member] | Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 0
NRG Solar Blythe LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Out of Market Contracts	$ 5
Spring Canyon [Member]
Finite-Lived Intangible Assets [Line Items]
Out of Market Contracts	$ 3
Finite-Lived Intangible Asset, Useful Life	25 years
Alta Wind XI [Member]
Finite-Lived Intangible Assets [Line Items]
Out of Market Contracts	$ 5
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Members' Equity (Details)

Members' Equity (Details) $ / shares in Units, $ in Millions		3 Months Ended				12 Months Ended
		Dec. 31, 2015USD ($)$ / sharesMW	Sep. 30, 2015$ / shares	Jun. 30, 2015$ / shares	Mar. 31, 2015$ / shares	Dec. 31, 2015USD ($)MW	Dec. 31, 2014USD ($)	[3]	Dec. 31, 2013USD ($)
Schedule of Capitalization, Equity [Line Items]
Dividends Payable, Date Declared						Feb. 17, 2016
Distribution Made to Limited Liability Company (LLC) Member, Distributions Paid, Per Unit | $ / shares		$ 0.215	$ 0.210	$ 0.20	$ 0.39
Common Stock, Dividends, Per Share, Declared | $ / shares		$ 0
Dividends Payable, Date to be Paid						Mar. 15, 2016
Power Generation Capacity, Megawatts | MW	[1],[2]	4,559				4,559
Payments of Capital Distribution						$ 38	$ 290		$ 707	[3]
Proceeds from Contributions from Affiliates									$ 75
2015 Drop Down Asssets [Member]
Schedule of Capitalization, Equity [Line Items]
Business Combination, Separately Recognized Transactions, Net Gains and Losses						109
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax		$ 32				32
June 2014 Drop Down Assets [Member]
Schedule of Capitalization, Equity [Line Items]
Business Combination, Separately Recognized Transactions, Net Gains and Losses						$ 113
Wind Farms [Member]
Schedule of Capitalization, Equity [Line Items]
Power Generation Capacity, Megawatts | MW	[1]	1,999				1,999
[1]	(a) Net capacity represents the maximum, or rated, generating capacity of the facility multiplied by the Company's percentage ownership in the facility as of December 31, 2015.
[2]	(f) Total net capacity excludes capacity for RPV Holdco and DGPV Holdco, which are consolidated by NRG, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Long-term Debt Long-term Debt -

Long-term Debt Long-term Debt - Debt Table (Details) - USD ($) $ in Millions		May. 29, 2015	Dec. 31, 2015	Dec. 31, 2014		Jul. 11, 2013
Debt Instrument [Line Items]
Long-term debt — affiliate			$ 618	$ 337	[1]
Long-term Debt			4,885	4,996
Current portion of long-term debt — external			241	224	[1]
Cumulative Effect of New Accounting Principle in Period of Adoption	[2]		50	58
Long-term Debt, Excluding Current Maturities			4,594	4,714
5.375% Senior Notes due in 2024 [Member]
Debt Instrument [Line Items]
Senior Notes			$ 500	500
Debt Instrument, Interest Rate, Stated Percentage	[3]		5.375%
Intercompany Credit Agreement due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt — affiliate			$ 337	337
Debt Instrument, Interest Rate, Stated Percentage	[3]		3.58%
Intercompany Credit Agreement due 2020 [Member]
Debt Instrument [Line Items]
Long-term debt — affiliate			$ 281	0
Debt Instrument, Interest Rate, Stated Percentage	[3]		3.325%
NRG Yield Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt	[4]		$ 306	0
Debt Instrument, Description of Variable Rate Basis			1 month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.75%
Alta Wind I, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 252	261
Debt Instrument, Interest Rate, Stated Percentage	[3]		7.015%
Alta Wind II, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 198	205
Debt Instrument, Interest Rate, Stated Percentage	[3]		5.696%
Alta Wind III, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 206	212
Debt Instrument, Interest Rate, Stated Percentage	[3]		6.067%
Alta Wind IV, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 133	138
Debt Instrument, Interest Rate, Stated Percentage	[3]		5.938%
Alta Wind V, lease financing arrangement, due 2035 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 213	220
Debt Instrument, Interest Rate, Stated Percentage	[3]		6.071%
Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 0	300
Debt Instrument, Description of Variable Rate Basis			3 month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.00%
Alta Wind XI, due 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 0	191
Debt Instrument, Description of Variable Rate Basis			3 month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.00%
Alta Realty Investments, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt				34
Debt Instrument, Interest Rate, Stated Percentage	[3]		7.00%
Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt				20
Debt Instrument, Description of Variable Rate Basis			3 month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.375%
West Holdings Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 485	506
West Holdings Credit Agreement due 2023 Tranche A [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis		LIBOR
Debt Instrument, Basis Spread on Variable Rate		1.625%
Marsh Landing Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term Debt			418	464
Walnut Creek Energy, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 351	391
Debt Instrument, Description of Variable Rate Basis			1 month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.625%
Tapestry Wind LLC due in 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 181	192
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.625%
NRG Energy Center Minneapolis LLC Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 108	121
Laredo Ridge Wind, LLC, due in 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 104	108
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.875%
South Trent Financing Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 62	$ 65
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.625%
Avra Valley [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.75%
Avra Valley Financing Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 60	$ 63
High Desert Facility [Member]
Debt Instrument [Line Items]
Long-term Debt			52	55
WCEP Holdings, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 46	46
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			3.00%
Other Debt [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 2	3
Roadrunner Financing Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 40	42
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.625%
Kansas South Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			6 month LIBOR
Kansas South Facility, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 33	$ 35
Debt Instrument, Basis Spread on Variable Rate			2.00%
NRG Solar Blythe LLC Credit Agreement Due 2028 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 21	$ 22
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.625%
PFMG Financing Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 29	31
Debt Instrument, Interest Rate, Stated Percentage	[3]		6.00%
Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 189	196		$ 200
Project [Domain]
Debt Instrument [Line Items]
Long-term Debt			$ 3,461	$ 4,159
West Holdings Credit Agreement due 2023 Tranche B [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis		LIBOR
Debt Instrument, Basis Spread on Variable Rate		2.25%
Marsh Landing Tranche A due December 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.75%
Marsh Landing Tranche B due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			1.875%
Alpine Financing Agreement, due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 154	$ 163
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
NRG Energy Center Minneapolis LLC Senior Secured Notes, due 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.95%
NRG Energy Center Minneapolis LLC Senior Secured Notes, due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			7.25%
Borrego Financing Agreement, due 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 72	$ 75
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.50%
Borrego Financing Agreement, due 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			5.65%
High Desert Facility, due 2033 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.50%
TA - High Desert, due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.15%
Letter of Credit [Member] | NRG Yield Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	[4]		$ 56
Letter of Credit [Member] | Alta Wind I, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			16
Letter of Credit [Member] | Alta Wind II, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			28
Letter of Credit [Member] | Alta Wind III, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			28
Letter of Credit [Member] | Alta Wind IV, lease financing arrangement, due 2034 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			19
Letter of Credit [Member] | Alta Wind V, lease financing arrangement, due 2035 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			31
Letter of Credit [Member] | Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Alta Wind XI, due 2020 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Alta Realty Investments, due 2031 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | West Holdings Credit Agreement [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			82
Letter of Credit [Member] | Marsh Landing Term Loan Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			22
Letter of Credit [Member] | Walnut Creek Energy, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			41
Letter of Credit [Member] | Tapestry Wind LLC due in 2021 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			20
Letter of Credit [Member] | NRG Energy Center Minneapolis LLC Senior Secured Notes [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Laredo Ridge Wind, LLC, due in 2026 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			10
Letter of Credit [Member] | South Trent Financing Agreement [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			10
Letter of Credit [Member] | Avra Valley Financing Agreement [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			3
Letter of Credit [Member] | High Desert Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			8
Letter of Credit [Member] | Other Debt [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Roadrunner Financing Agreement [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			5
Letter of Credit [Member] | Kansas South Facility, due 2031 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			4
Letter of Credit [Member] | NRG Solar Blythe LLC Credit Agreement Due 2028 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			6
Letter of Credit [Member] | PFMG Financing Agreement [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			0
Letter of Credit [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			27
Letter of Credit [Member] | Alpine Financing Agreement, due 2022 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			37
Letter of Credit [Member] | Borrego Financing Agreement, due 2024 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			$ 5
Minimum [Member] | West Holdings Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			1 month LIBOR
Debt Instrument, Basis Spread on Variable Rate
Minimum [Member] | West Holdings Credit Agreement due 2023 Tranche A [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.625%
Minimum [Member] | West Holdings Credit Agreement due 2023 Tranche B [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
Minimum [Member] | Alpine Financing Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.75%
Minimum [Member] | Alpine [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
Maximum [Member] | West Holdings Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
Maximum [Member] | Alpine Financing Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
Maximum [Member] | Alpine [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
January 31, 2031 [Member] | Notes Payable, Other Payables [Member] | Alta Realty Investments, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 33
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[2]	(c) Total net debt reflects the reclassification of deferred financing costs to reduce long-term debt as further described in Note 2, Summary of Significant Accounting Policies.
[3]	(a) As of December 31, 2015, L+ equals 3 month LIBOR plus x%, except for the NRG Marsh Landing term loan, Walnut Creek term loan, and the RevolvingCredit Facility where L+ equals 1 month LIBOR plus x% and Kansas South where L+ equals 6 month LIBOR plus x%.
[4]	(b) Applicable rate is determined by the Borrower Leverage Ratio, as defined in the credit agreement.

Long-term Debt Long-term Debt90

Long-term Debt Long-term Debt - Corporate Debt (Details)

Feb. 25, 2016USD ($)

Dec. 15, 2015USD ($)

Nov. 03, 2015USD ($)

Jun. 30, 2015

May. 29, 2015USD ($)

May. 15, 2015

Dec. 31, 2015USD ($)

Sep. 30, 2015

Jun. 29, 2015USD ($)$ / shares

Mar. 31, 2014USD ($)

Feb. 11, 2014USD ($)$ / shares

West Holdings Credit Agreement due 2023 Tranche A [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.625%

Proceeds from Issuance of Debt

$ 5,000,000

3.25% Convertible Notes due 2020 [Member]

Debt Instrument [Line Items]

Convertible Debt

$ 287,500,000

Debt Instrument, Interest Rate, Stated Percentage

3.25%

Debt Instrument, Convertible, Conversion Price | $ / shares

$ 27.50

Debt Instrument, Convertible, Conversion Ratio

36.3636

Debt Instrument, Face Amount

$ 1,000

Convertible Notes Payable [Member]

Debt Instrument [Line Items]

Convertible Debt

$ 281,000,000

$ 337,000,000

Debt Instrument, Interest Rate, Stated Percentage

3.325%

3.58%

3.5% Convertible Notes due 2019 [Member]

Debt Instrument [Line Items]

Convertible Debt

$ 345,000,000

Debt Instrument, Convertible, Conversion Ratio

42.9644

Convertible Debt [Member]

Debt Instrument [Line Items]

Debt Instrument, Convertible, Conversion Price | $ / shares

$ 46.55

Debt Instrument, Convertible, Conversion Ratio

21.4822

Debt Instrument, Face Amount

$ 1,000

NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

2.75%

Line of Credit Facility, Maximum Borrowing Capacity

$ 495,000,000

Proceeds from Issuance of Debt

$ 45,000,000

$ 209,000,000

Line of Credit Facility, Fair Value of Amount Outstanding

306,000,000

Letter of Credit [Member] | NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

[1]

$ 56,000,000

September 1, 2017 to August 31, 2020 [Member] | West Holdings Credit Agreement due 2023 Tranche A [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.75%

Subsequent Event [Member] | NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Proceeds from Issuance of Debt

$ 40,000,000

[1]

(b) Applicable rate is determined by the Borrower Leverage Ratio, as defined in the credit agreement.

Long-term Debt Long-term Debt91

Long-term Debt Long-term Debt - Alta/Avenal/West Holdings (Details) - USD ($)

Dec. 15, 2015

Nov. 03, 2015

Jun. 30, 2015

May. 29, 2015

Mar. 18, 2015

Sep. 30, 2015

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

[1]

Feb. 11, 2014

Aug. 23, 2011

Sep. 22, 2010

Debt Instrument [Line Items]

Long-term Debt

$ 4,885,000,000

$ 4,996,000,000

Proceeds from Noncontrolling Interests

122,000,000

190,000,000

[1]

$ 0

Loss on debt extinguishment

$ (9,000,000)

0

[1],[2]

$ 0

[2]

Convertible Debt [Member]

Debt Instrument [Line Items]

Debt Instrument, Face Amount

$ 1,000

Debt Instrument, Convertible, Conversion Ratio

21.4822

West Holdings Credit Agreement Tranche B [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

$ 60,000,000

West Holdings PPA [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

90,000,000

West Holding Collateral Agent [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

48,000,000

West Holdings Working Capital Facility [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

10,000,000

NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Long-term Debt

[3]

$ 306,000,000

0

Debt Instrument, Description of Variable Rate Basis

1 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.75%

Proceeds from Issuance of Debt

$ 45,000,000

$ 209,000,000

Line of Credit Facility, Maximum Borrowing Capacity

$ 495,000,000

Alta Realty Investments, due 2031 [Member]

Debt Instrument [Line Items]

Long-term Debt

34,000,000

Debt Instrument, Interest Rate, Stated Percentage

[4]

7.00%

Alta Wind Asset Management, due 2031 [Member]

Debt Instrument [Line Items]

Long-term Debt

20,000,000

Debt Instrument, Description of Variable Rate Basis

3 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.375%

Alta Wind XI, due 2020 [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 0

191,000,000

Debt Instrument, Description of Variable Rate Basis

3 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.00%

Alta Wind X, due 2020 [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 0

300,000,000

Debt Instrument, Description of Variable Rate Basis

3 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.00%

West Holdings Credit Agreement Tranche A [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

480,000,000

West Holdings Credit Agreement due 2023 Tranche A [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

LIBOR

Debt Instrument, Basis Spread on Variable Rate

1.625%

Proceeds from Issuance of Debt

$ 5,000,000

West Holdings Credit Agreement due 2023 Tranche B [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.25%

West Holdings Credit Agreement [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 485,000,000

506,000,000

Loss on debt extinguishment

$ (7,000,000)

Line of Credit Facility, Maximum Borrowing Capacity

$ 540,000,000

Alta Wind I - V Lease financing arrangement [Member]

Debt Instrument [Line Items]

Long-term Debt

1,002,000,000

Letter of Credit [Member] | Alta Wind I - V Lease financing arrangement [Member]

Debt Instrument [Line Items]

Long-term Debt

122,000,000

Letter of Credit [Member] | NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

[3]

56,000,000

Letter of Credit [Member] | Alta Realty Investments, due 2031 [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

0

Letter of Credit [Member] | Alta Wind Asset Management, due 2031 [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

0

Letter of Credit [Member] | Alta Wind XI, due 2020 [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

0

Letter of Credit [Member] | Alta Wind X, due 2020 [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

0

Letter of Credit [Member] | West Holdings Credit Agreement [Member]

Debt Instrument [Line Items]

Letters of Credit Outstanding, Amount

82,000,000

Working Capital Facility [Member] | West Holdings Credit Agreement [Member]

Debt Instrument [Line Items]

Credit Facility, Maximum Borrowing Capacity, Amendment

$ (9,000,000)

Alta Wind I - V Lease financing arrangement [Member] | Revolving Credit Facility [Member] | NRG Yield Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Letters of Credit, Issued Amount

19,000,000

Financial Institutions [Member] | Alta X and XI TE Holdco [Member]

Debt Instrument [Line Items]

Proceeds from Noncontrolling Interests

$ 119,000,000

$ 122,000,000

$ 190,000,000

Avenal [Member]

Debt Instrument [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

4.50%

Debt Instrument, Face Amount

$ 43,000,000

Proceeds from Debt, Net of Issuance Costs

$ 20,000,000

Equity Method Investment, Ownership Percentage

[5]

50.00%

September 22, 2010 to March 18, 2015 [Member] | Avenal [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

6 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.25%

March 18, 2015 to March 17, 2022 [Member] | Avenal [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

6 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

1.75%

March 18, 2022 to March 17, 2027 [Member] | Avenal [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

6 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.00%

March 18, 2027 through Maturity [Member] | Avenal [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

6 month LIBOR

Debt Instrument, Basis Spread on Variable Rate

2.25%

September 1, 2017 to August 31, 2020 [Member] | West Holdings Credit Agreement due 2023 Tranche A [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.75%

September 1, 2017 to August 31, 2020 [Member] | West Holdings Credit Agreement due 2023 Tranche B [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

2.375%

September 1, 2020 through maturity [Member] | West Holdings Credit Agreement due 2023 Tranche A [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.875%

September 1, 2020 through maturity [Member] | West Holdings Credit Agreement due 2023 Tranche B [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

2.50%

Utility-Scale Solar [Member] | Avenal [Member]

Debt Instrument [Line Items]

Equity Method Investment, Ownership Percentage

49.95%

50.00%

50.00%

[6]

January 31, 2031 [Member] | Notes Payable, Other Payables [Member] | Alta Realty Investments, due 2031 [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 33,000,000

May 15, 2031 [Member] | Term Loan Facility [Member] | Alta Wind Asset Management, due 2031 [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 19,000,000

Maximum [Member] | West Holdings Credit Agreement [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

Interest Rate Swap [Member] | Alta Wind Asset Management, due 2031 [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

3-Month LIBOR

Interest Rate Swap [Member] | Alta Wind X and Alta Wind XI, due 2020 [Member]

Debt Instrument [Line Items]

Extinguishment of Debt, Amount

$ 17,000,000

[1]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

[2]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[3]

(b) Applicable rate is determined by the Borrower Leverage Ratio, as defined in the credit agreement.

[4]

(a) As of December 31, 2015, L+ equals 3 month LIBOR plus x%, except for the NRG Marsh Landing term loan, Walnut Creek term loan, and the RevolvingCredit Facility where L+ equals 1 month LIBOR plus x% and Kansas South where L+ equals 6 month LIBOR plus x%.

[5]

(b) The Company's interest in GenConn and Avenal increased from 49.95% to 50% on September 30, 2015.

[6]

(b) On September 30, 2015, the Company acquired NRG's remaining 0.05% for an immaterial amount.

Long-term Debt Long Term Debt N

Long-term Debt Long Term Debt November 2015 Drop Downs (Details) - USD ($)		Dec. 15, 2015	Nov. 03, 2015	Jul. 11, 2013	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term Debt					$ 4,885,000,000	$ 4,996,000,000
Viento Funding [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						9,000,000
Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis					3 month LIBOR
Debt Instrument, Basis Spread on Variable Rate					2.00%
Long-term Debt					$ 0	300,000,000
Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt				$ 200,000,000	$ 189,000,000	196,000,000
NRG Yield Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis					1 month LIBOR
Debt Instrument, Basis Spread on Variable Rate					2.75%
Long-term Debt	[1]				$ 306,000,000	$ 0
Line of Credit Facility, Maximum Borrowing Capacity					495,000,000
Line of Credit Facility, Fair Value of Amount Outstanding					306,000,000
Proceeds from Issuance of Debt		$ 45,000,000	$ 209,000,000
Working Capital Facility [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding					0
Letter of Credit [Member] | Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount					0
Letter of Credit [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount					27,000,000
Letter of Credit [Member] | NRG Yield Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	[1]				$ 56,000,000
Interest Rate Swap [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis					6-Month LIBOR
Viento Funding [Member] | July 11, 2013 to July 11, 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis				6 month LIBOR
Debt Instrument, Basis Spread on Variable Rate				2.75%
Viento Funding [Member] | July 11, 2017 to July 11, 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis				LIBOR
Debt Instrument, Basis Spread on Variable Rate				3.00%
Viento Funding [Member] | July 11, 2021 through Maturity [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis				LIBOR
Debt Instrument, Basis Spread on Variable Rate				3.25%
[1]	(b) Applicable rate is determined by the Borrower Leverage Ratio, as defined in the credit agreement.

Long-term Debt Long Term Debt O

Long-term Debt Long Term Debt Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Jul. 11, 2013
Debt Instrument [Line Items]
Pro-Rate Share of Debt Held by Unconsolidated Affiliates	$ 842
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	241
Derivative, Notional Amount	1,991
Long-term Debt	4,885	$ 4,996
Long-term Debt, Maturities, Repayments of Principal in Year Two	252
Long-term Debt, Maturities, Repayments of Principal in Year Three	260
Long-term Debt, Maturities, Repayments of Principal in Year Four	919
Long-term Debt, Maturities, Repayments of Principal in Year Five	607
Long-term Debt, Maturities, Repayments of Principal after Year Five	2,606
West Holdings PPA [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		90
Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 189	$ 196	$ 200
Avra Valley [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate	1.75%
Kansas South Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	6 month LIBOR
Marsh Landing Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 418	$ 464
Marsh Landing Tranche A due December 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Marsh Landing Tranche B due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Debt Instrument, Basis Spread on Variable Rate	1.875%
High Desert Facility [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 52	$ 55
Kansas South Facility, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 33	$ 35
Debt Instrument, Basis Spread on Variable Rate	2.00%
Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3 month LIBOR
Long-term Debt	$ 0	$ 300
Debt Instrument, Basis Spread on Variable Rate	2.00%
Alta Wind XI, due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3 month LIBOR
Long-term Debt	$ 0	191
Debt Instrument, Basis Spread on Variable Rate	2.00%
Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3 month LIBOR
Long-term Debt		20
Debt Instrument, Basis Spread on Variable Rate	2.375%
Laredo Ridge Wind, LLC, due in 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Long-term Debt	$ 104	108
Debt Instrument, Basis Spread on Variable Rate	1.875%
Tapestry Wind LLC due in 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Long-term Debt	$ 181	192
Debt Instrument, Basis Spread on Variable Rate	1.625%
Walnut Creek Energy, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	1 month LIBOR
Long-term Debt	$ 351	391
Debt Instrument, Basis Spread on Variable Rate	1.625%
WCEP Holdings, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Long-term Debt	$ 46	$ 46
Debt Instrument, Basis Spread on Variable Rate	3.00%
Letter of Credit [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 27
Letter of Credit [Member] | Marsh Landing Term Loan Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	22
Letter of Credit [Member] | High Desert Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	8
Letter of Credit [Member] | Kansas South Facility, due 2031 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	4
Letter of Credit [Member] | Alta Wind X, due 2020 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	0
Letter of Credit [Member] | Alta Wind XI, due 2020 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	0
Letter of Credit [Member] | Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	0
Letter of Credit [Member] | Laredo Ridge Wind, LLC, due in 2026 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	10
Letter of Credit [Member] | Tapestry Wind LLC due in 2021 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	20
Letter of Credit [Member] | Walnut Creek Energy, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 41
Interest Rate Swap [Member] | Viento Funding II, Inc., due in 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	6-Month LIBOR
Derivative, Notional Amount	$ 235
Percentage of Debt Hedged by Interest Rate Derivatives	90.00%
Interest Rate Swap [Member] | Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 19
Percentage of Debt Hedged by Interest Rate Derivatives	100.00%
Derivative, Fixed Interest Rate	2.47%
Interest Rate Swap [Member] | Walnut Creek [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 311
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Interest Rate Swap [Member] | WCEP Holdings, LLC, due in 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 46
Percentage of Debt Hedged by Interest Rate Derivatives	90.00%
Derivative, Fixed Interest Rate	4.003%
Laredo Ridge [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 83
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	2.31%
Borrego [Member] | Interest Rate Swap [Member] | Maturity - December 31, 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 9
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	1.125%
Marsh Landing [Member] | Interest Rate Swap [Member] | Maturity - June 30, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 387
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	3.244%
Kansas South [Member] | Interest Rate Swap [Member] | Maturity - June 30, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	6-Month LIBOR
Derivative, Notional Amount	$ 25
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	2.368%
NRG West Holdings LLC [Member] | Interest Rate Swap [Member] | Maturity - June 30, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 358
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	2.417%
South Trent Wind LLC [Member] | Interest Rate Swap [Member] | Maturity - June14, 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 46
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	3.265%
South Trent Wind LLC [Member] | Interest Rate Swap [Member] | Maturity - June 14, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 21
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	4.95%
NRG Solar Roadrunner LLC [Member] | Interest Rate Swap [Member] | Maturity - December 31, 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 30
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	4.313%
NRG Solar Blythe LLC [Member] | Interest Rate Swap [Member] | Maturity - June 25, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 16
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	3.563%
NRG Solar Avra Valley [Member] | Interest Rate Swap [Member] | Maturity - November 30, 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 51
Percentage of Debt Hedged by Interest Rate Derivatives	85.00%
Derivative, Fixed Interest Rate	2.333%
NRG Solar Alpine LLC [Member] | Interest Rate Swap [Member] | Maturity - December 31, 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 122
Percentage of Debt Hedged by Interest Rate Derivatives	85.00%
Derivative, Fixed Interest Rate	2.744%
NRG Solar Alpine LLC [Member] | Interest Rate Swap [Member] | Maturity - June 30, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 9
Percentage of Debt Hedged by Interest Rate Derivatives	85.00%
Derivative, Fixed Interest Rate	2.421%
Tapestry Wind [Member] | Interest Rate Swap [Member] | Maturity - December 21, 2021 [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 163
Percentage of Debt Hedged by Interest Rate Derivatives	75.00%
Derivative, Fixed Interest Rate	2.21%
Tapestry Wind [Member] | Interest Rate Swap [Member] | Maturity - December 21, 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	3-Month LIBOR
Derivative, Notional Amount	$ 60
Percentage of Debt Hedged by Interest Rate Derivatives	50.00%
Derivative, Fixed Interest Rate	3.57%
Minimum [Member] | Alpine Financing Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Minimum [Member] | Alpine [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
Maximum [Member] | Alpine Financing Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
Maximum [Member] | Alpine [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate
May 15, 2031 [Member] | Term Loan Facility [Member] | Alta Wind Asset Management, due 2031 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 19

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended																5 Months Ended	12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014		Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2013	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Segment Reporting
Operating revenues	$ 209		$ 225		$ 235		$ 200		$ 212	[2]	$ 199		$ 194		$ 141			$ 869		$ 746	[3]	$ 387	[3]
Cost of operations																		312		266		148
Depreciation and amortization																		265		202	[3],[4]	74	[3],[4]
General and administrative																		10		8	[3]	7	[3]
Acquisition-related transaction and integration costs																		3		4	[3]	0	[3]
Operating income (loss)	67		81		85		46		70	[2]	85		60		51			279		266	[3]	158	[3]
Equity in earnings of unconsolidated affiliates																		35		25	[3]	22	[3]
Other income, net																		2		3	[3]	3	[3]
Loss on debt extinguishment																		(9)		0	[3],[4]	0	[3],[4]
Interest expense																		(229)		(186)	[3]	(52)	[3]
Income Before Income Taxes																				108	[3]	131
Net Income (Loss)	21		$ 36		$ 44		$ (23)		(6)	[2]	$ 48		$ 39		$ 27			78		108	[3],[5],[6]	134	[3],[4],[5],[6]
Income Tax Expense (Benefit)																		0		0	[3]	(3)	[3]
Equity Method Investments	798								410	[7]								798		410	[7]
Total Assets	7,608								7,727	[7]								7,608		7,727	[7]
Capital Expenditures	30	[8]							13	[9]								30	[8]	13	[9]
Conventional Generation [Member]
Segment Reporting
Operating revenues																		336		317		138
Cost of operations																		59		55		23
Depreciation and amortization																		81		82		20
General and administrative																		0		0		0
Acquisition-related transaction and integration costs																		0		0
Operating income (loss)																		196		180		95
Equity in earnings of unconsolidated affiliates																		14		14		16
Other income, net																		1		0		1
Loss on debt extinguishment																		(7)
Interest expense																		(48)		(53)		(25)
Income Before Income Taxes																				141		87
Net Income (Loss)																		156				87
Income Tax Expense (Benefit)																						0
Equity Method Investments	110								114									110		114
Total Assets	2,102								2,169									2,102		2,169
Capital Expenditures	4	[8]							6	[9]								4	[8]	6	[9]
Corporate
Segment Reporting
Operating revenues																		0		0		0
Cost of operations																		0		0		0
Depreciation and amortization																		0		0		0
General and administrative																						7
Acquisition-related transaction and integration costs																		3
Operating income (loss)																		(13)		(12)		(7)
Equity in earnings of unconsolidated affiliates																		0		0		0
Other income, net																		0		1		0
Loss on debt extinguishment																		0
Interest expense																		(52)		(25)		0
Income Before Income Taxes																				(36)		(7)
Net Income (Loss)																		(65)				(4)
Income Tax Expense (Benefit)																						(3)
Equity Method Investments									0											0
Total Assets	22								332									22		332
Capital Expenditures	0	[8]							0	[9]								0	[8]	0	[9]
Thermal [Member]
Segment Reporting
Operating revenues																		174		195		152
Cost of operations																		126		139		110
Depreciation and amortization																		19		18		15
General and administrative																		0		0		0
Acquisition-related transaction and integration costs																		0		0
Operating income (loss)																		29		38		27
Equity in earnings of unconsolidated affiliates																		0		0		0
Other income, net																		0		0		0
Loss on debt extinguishment																		0
Interest expense																		(7)		(7)		(7)
Income Before Income Taxes																				31		20
Net Income (Loss)																		22				20
Income Tax Expense (Benefit)																						0
Equity Method Investments	0								0									0		0
Total Assets	428								436									428		436
Capital Expenditures	20	[8]							7	[9]								20	[8]	7	[9]
Renewables
Segment Reporting
Operating revenues																		359		234		97
Cost of operations																		127		72		15
Depreciation and amortization																		165		102		39
General and administrative																		0		0		0
Acquisition-related transaction and integration costs																		0		0
Operating income (loss)																		67		60		43
Equity in earnings of unconsolidated affiliates																		21		11		6
Other income, net																		1		2		2
Loss on debt extinguishment																		(2)
Interest expense																		(122)		(101)		(20)
Income Before Income Taxes																				(28)		31
Net Income (Loss)																		(35)				31
Income Tax Expense (Benefit)																						$ 0
Equity Method Investments	688								296									688		296
Total Assets	5,056								4,790									5,056		4,790
Capital Expenditures	$ 6	[8]							$ 0	[9]								6	[8]	0	[9]
Affiliated Entity [Member]
Segment Reporting
General and administrative																	$ 3	10		8
Acquisition-related transaction and integration costs																				4
Affiliated Entity [Member] | Corporate
Segment Reporting
General and administrative																		$ 10		8
Acquisition-related transaction and integration costs																				$ 4
Southern California Edison [Member] | Conventional Generation [Member]
Segment Reporting
Customer's Percentage of Total Revenue																		25.00%		26.00%		14.00%
Southern California Edison [Member] | Renewables
Segment Reporting
Customer's Percentage of Total Revenue																		18.00%		9.00%		4.00%
PG&E [Member] | Conventional Generation [Member]
Segment Reporting
Customer's Percentage of Total Revenue																		14.00%		16.00%		21.00%
PG&E [Member] | Renewables
Segment Reporting
Customer's Percentage of Total Revenue																		3.00%		4.00%		7.00%
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[7]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) Includes accruals.
[9]	(a) Includes accruals. Capital expenditures for Renewables include a sales tax refund received by Alpine in the first quarter of 2014.

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Related Party Transaction [Line Items]
General and administrative		$ 10,000,000	$ 8,000,000	[1]	$ 7,000,000	[1]
Repayments of Related Party Debt					2,000,000
NRG Repowering Holdings LLC [Member]
Related Party Transaction [Line Items]
Due to Affiliate		7,000,000
Payments			18,000,000
Receipt of payments	$ 11,000,000
GenOn Energy Services LLC [Member]
Related Party Transaction [Line Items]
Due to Affiliate		6,000,000	4,000,000
NRG Yield [Member] | NRG [Member]
Related Party Transaction [Line Items]
Management Services Fee, Increase		1,000,000
General and administrative		8,000,000	6,000,000
NRG Yield [Member] | NRG [Member] | Scenario, Plan [Member]
Related Party Transaction [Line Items]
Management Services Fee, Annual		7,000,000
NRG Yield, Inc. [Member] | NRG [Member]
Related Party Transaction [Line Items]
Due to Affiliate		0
Thermal [Member] | NRG [Member]
Related Party Transaction [Line Items]
Due to Affiliate		29,000,000	22,000,000
Related Party Transaction, Expenses from Transactions with Related Party		29,000,000	27,000,000		24,000,000
Marsh Landing [Member] | GenOn Energy Services LLC [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		13,000,000
El Segundo [Member] | NRG El Segundo Operations, Inc. [Member]
Related Party Transaction [Line Items]
Due to Affiliate		1,000,000
Related Party Transaction, Expenses from Transactions with Related Party		4,000,000
CVSR [Member] | NRG Energy Services LLC [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		5,000,000	7,000,000
November 2015 Drop Down Assets [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Other Revenues from Transactions with Related Party		16,000,000	12,000,000		7,000,000
NRG Energy Center Minneapolis LLC [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		8,000,000	2,000,000
Operations and Maintenance services [Member] | November 2015 Drop Down Assets [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		5,000,000	3,000,000
NRG Repowering Holdings LLC [Member]
Related Party Transaction [Line Items]
Due to Affiliate			7,000,000
Support services [Member] | November 2015 Drop Down Assets [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		3,000,000	1,000,000
NRG Power Marketing LLC [Member] | El Segundo [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		$ 0	1,000,000		12,000,000
Related Party Costs, Capitalized Amount			9,000,000
NRG El Segundo Operations, Inc. [Member] | El Segundo [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party					5,000,000
GenOn Energy Services LLC [Member] | Marsh Landing [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party					36,000,000
Related Party Costs, Capitalized Amount			$ 2,000,000		$ 29,000,000
Utility-Scale Solar [Member] | CVSR [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage		48.95%
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Related Party Transactions O&M

Related Party Transactions O&M Thermal (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Related Party Transaction [Line Items]
General and administrative	$ 10	$ 8	[1]	$ 7	[1]
Thermal [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	29	27		$ 24
Due to Affiliate	$ 29	$ 22
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Related Party Transactions O&97

Related Party Transactions O&M GenConn (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
GCE Holding LLC [Member] | NRG [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 4	$ 6	$ 5

Related Party Transactions NRG

Related Party Transactions NRG and Dover (Details) - NRG Repowering Holdings LLC [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Cost of Natural Gas Purchases	$ 5	$ 10
coal, gas purchases			$ 5

Related Party Transactions El S

Related Party Transactions El Segundo (Details) - El Segundo [Member] - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
NRG El Segundo Operations, Inc. [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party			$ 5,000,000
NRG Power Marketing LLC [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 0	$ 1,000,000	$ 12,000,000
NRG El Segundo Operations, Inc. [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	4,000,000
Due to Affiliate	$ 1,000,000

Related Party Transactions CVSR

Related Party Transactions CVSR (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
CVSR [Member] | NRG Energy Services LLC [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 5	$ 7

Condensed Consolidating Fina101

Condensed Consolidating Financial Information Condensed Consolidating Financial Information Condensed Consolidating Financial Information (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
5.375% Senior Notes due in 2024 [Member]
Senior Notes	$ 500	$ 500

Condensed Consolidating Fina102

Condensed Consolidating Financial Information CP Income Statement (Details) - USD ($) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014	[2]	Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Condensed Income Statements, Captions [Line Items]
Revenues		$ 209	$ 225		$ 235		$ 200		$ 212		$ 199		$ 194		$ 141		$ 869		$ 746	[3]	$ 387	[3]
Operating Costs and Expenses [Abstract]
Cost of operations																	312		266	[3]	148	[3]
Depreciation and amortization																	265		202	[3],[4]	74	[3],[4]
General and administrative																	10		8	[3]	7	[3]
Acquisition-related transaction and integration costs																	3		4	[3]	0	[3]
Total operating costs and expenses																	590		480	[3]	229	[3]
Operating Income (Loss)		67	81		85		46		70		85		60		51		279		266	[3]	158	[3]
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	0		0		0
Equity in earnings of unconsolidated affiliates																	35		25	[3]	22	[3]
Other income, net																	2		3	[3]	3	[3]
Loss on debt extinguishment																	(9)		0	[3],[4]	0	[3],[4]
Interest expense																	(229)		(186)	[3]	(52)	[3]
Total other income (expense), net																	(201)		(158)	[3]	(27)	[3]
Net Income (Loss)		$ 21	$ 36		$ 44		$ (23)		$ (6)		$ 48		$ 39		$ 27		78		108	[3],[5],[6]	134	[3],[4],[5],[6]
Net Income (Loss) Attributable to NRG Yield LLC																	129		105	[3]	136	[3]
Net Income (Loss) Attributable to Noncontrolling Interest																	(51)		3	[3]	(2)	[3]
NRG Yield LLC [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																	0	[7]	0	[8],[9]
Operating Costs and Expenses [Abstract]
Cost of operations																	0	[7]	0	[8],[9]	0	[10],[11]
Depreciation and amortization																	0	[7]	0	[8],[9]	0	[10],[11]
General and administrative																	0	[7]	0	[8],[9]	0	[10],[11]
Acquisition-related transaction and integration costs																	0	[7]	0	[8],[9]
Total operating costs and expenses																	0	[7]	0	[8],[9]	0	[10],[11]
Operating Income (Loss)																	0	[7]	0	[8],[9]	0	[10],[11]
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	129	[7]	104	[8],[9]	133	[10],[11]
Equity in earnings of unconsolidated affiliates																	0	[7]	0	[8],[9]	0	[10],[11]
Other income, net																	0	[7]	1	[8],[9]	0	[10],[11]
Loss on debt extinguishment	[7]																0
Interest expense																	0	[7]	0	[8],[9]	0	[10],[11]
Total other income (expense), net																	129	[7]	105	[8],[9]	133	[10],[11]
Net Income (Loss)																	129	[12]	105	[8],[9],[13],[14]	136	[15],[16]
Net Income (Loss) Attributable to NRG Yield LLC																	129	[7]	105	[8],[9]	136	[10],[11]
Net Income (Loss) Attributable to Noncontrolling Interest																	0	[7]	0	[8],[9]	0	[10],[11]
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																	21		24		0	[10],[11]
Operating Costs and Expenses [Abstract]
Cost of operations																	14		16		0
Depreciation and amortization																	4		4		0
General and administrative																	0		0		0
Acquisition-related transaction and integration costs																	0		0
Total operating costs and expenses																	18		20		0
Operating Income (Loss)																	3		4		0
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	(43)		(22)		3
Equity in earnings of unconsolidated affiliates																	(1)		0		0
Other income, net																	0		0		0
Loss on debt extinguishment																	0
Interest expense																	0		0		0
Total other income (expense), net																	(44)		(22)		3
Net Income (Loss)																	(41)		(18)		3
Net Income (Loss) Attributable to NRG Yield LLC																	(41)		(18)		3
Net Income (Loss) Attributable to Noncontrolling Interest																	0		0		0
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																	838		722	[9]	387	[11]
Operating Costs and Expenses [Abstract]
Cost of operations																	298		250	[9]	148	[11]
Depreciation and amortization																	261		198	[9]	74	[11]
General and administrative																	0		0	[9]	0	[11]
Acquisition-related transaction and integration costs																	0		0	[9]
Total operating costs and expenses																	559		448	[9]	222	[11]
Operating Income (Loss)																	279		274	[9]	165	[11]
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	0		0	[9]	0	[11]
Equity in earnings of unconsolidated affiliates																	3		(2)	[9]	0	[11]
Other income, net																	2		2	[9]	3	[11]
Loss on debt extinguishment																	(9)
Interest expense																	(177)		(161)	[9]	(52)	[11]
Total other income (expense), net																	(181)		(161)	[9]	(49)	[11]
Net Income (Loss)																	98		113	[9],[14]	116	[11]
Net Income (Loss) Attributable to NRG Yield LLC																	100		113	[9]	116	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																	(2)		0	[9]	0	[11]
NRG Yield Operating LLC [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																	10		0	[9]	0	[11]
Operating Costs and Expenses [Abstract]
Cost of operations																	0		0	[9]	0	[11]
Depreciation and amortization																	0		0	[9]	0	[11]
General and administrative																	10		8	[9]	7	[11]
Acquisition-related transaction and integration costs																	3		4	[9]
Total operating costs and expenses																	13		12	[9]	7	[11]
Operating Income (Loss)																	(3)		(12)	[9]	(7)	[11]
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	102		117	[9]	116	[11]
Equity in earnings of unconsolidated affiliates																	33		27	[9]	22	[11]
Other income, net																	0		0	[9]	0	[11]
Loss on debt extinguishment																	0
Interest expense																	(52)		(25)	[9]	0	[11]
Total other income (expense), net																	83		119	[9]	138	[11]
Net Income (Loss)																	80		107	[9],[14]	131	[11]
Net Income (Loss) Attributable to NRG Yield LLC																	129		104	[9]	133	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																	(49)		3	[9]	(2)	[11]
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																	0	[17]	0	[9],[18]	0	[11],[19]
Operating Costs and Expenses [Abstract]
Cost of operations																	0	[17]	0	[9],[18]	0	[11],[19]
Depreciation and amortization																	0	[17]	0	[9],[18]	0	[11],[19]
General and administrative																	0	[17]	0	[9],[18]	0	[11],[19]
Acquisition-related transaction and integration costs																	0	[17]	0	[9],[18]
Total operating costs and expenses																	0	[17]	0	[9],[18]	0	[11],[19]
Operating Income (Loss)																	0	[17]	0	[9],[18]	0	[11],[19]
Costs and Expenses [Abstract]
Equity in earnings (losses) of consolidated affiliates																	(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Equity in earnings of unconsolidated affiliates																	0	[17]	0	[9],[18]	0	[11],[19]
Other income, net																	0	[17]	0	[9],[18]	0	[11],[19]
Loss on debt extinguishment	[17]																0
Interest expense																	0	[17]	0	[9],[18]	0	[11],[19]
Total other income (expense), net																	(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Net Income (Loss)																	(188)	[17]	(199)	[9],[14],[18],[20]	(252)	[16],[21]
Net Income (Loss) Attributable to NRG Yield LLC																	(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Net Income (Loss) Attributable to Noncontrolling Interest																	$ 0	[17]	$ 0	[9],[18]	$ 0	[11],[19]
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[7]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[8]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[12]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[13]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[14]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[15]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[16]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[17]	(b) All significant intercompany transactions have been eliminated in consolidation.
[18]	(b) All significant intercompany transactions have been eliminated in consolidation.
[19]	(b) All significant intercompany transactions have been eliminated in consolidation.
[20]	(b) All significant intercompany transactions have been eliminated in consolidation.
[21]	(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina103

Condensed Consolidating Financial Information CP Comprehensive Income (Details) - USD ($) $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2015

Sep. 30, 2015

[1]

Jun. 30, 2015

[1]

Mar. 31, 2015

[1]

Dec. 31, 2014

[2]

Sep. 30, 2014

[2]

Jun. 30, 2014

[2]

Mar. 31, 2014

[2]

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

$ 21

$ 36

$ 44

$ (23)

$ (6)

$ 48

$ 39

$ 27

$ 78

$ 108

[3],[4],[5]

$ 134

[3],[4],[5],[6]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(18)

(66)

[4]

47

[4]

Other comprehensive (loss) income

(18)

(66)

[4]

47

[4]

Comprehensive Income

60

42

[4]

181

[4]

Less: Comprehensive (loss) income attributable to noncontrolling interests

(52)

1

(2)

Comprehensive Income Attributable to NRG Yield LLC

112

41

[4]

183

[4]

NRG Yield LLC [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

129

[7]

105

[8],[9],[10],[11]

136

[12],[13]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(17)

[7]

(64)

[9],[11]

47

[12],[13]

Other comprehensive (loss) income

(17)

[7]

(64)

[9],[11]

47

[12],[13]

Comprehensive Income

112

[7]

41

[9],[11]

183

[12],[13]

Less: Comprehensive (loss) income attributable to noncontrolling interests

0

[7]

0

[9],[11]

0

[12],[13]

Comprehensive Income Attributable to NRG Yield LLC

112

[7]

41

[9],[11]

183

[12],[13]

Guarantor Subsidiaries [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

(41)

(18)

3

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

0

0

3

Other comprehensive (loss) income

0

0

3

Comprehensive Income

(41)

(18)

6

Less: Comprehensive (loss) income attributable to noncontrolling interests

0

0

0

Comprehensive Income Attributable to NRG Yield LLC

(41)

(18)

6

Non-Guarantor Subsidiaries [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

98

113

[10],[11]

116

[14]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(19)

(65)

[11]

56

[13]

Other comprehensive (loss) income

(19)

(65)

[11]

56

[13]

Comprehensive Income

79

48

[11]

172

[13]

Less: Comprehensive (loss) income attributable to noncontrolling interests

0

0

[11]

0

[13]

Comprehensive Income Attributable to NRG Yield LLC

79

48

[11]

172

[13]

NRG Yield Operating LLC [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

80

107

[10],[11]

131

[14]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(18)

(66)

[11]

47

[13]

Other comprehensive (loss) income

(18)

(66)

[11]

47

[13]

Comprehensive Income

62

41

[11]

178

[13]

Less: Comprehensive (loss) income attributable to noncontrolling interests

(52)

1

[11]

(2)

[13]

Comprehensive Income Attributable to NRG Yield LLC

114

40

[11]

180

[13]

Consolidation, Eliminations [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

(188)

[15]

(199)

[10],[11],[16],[17]

(252)

[13],[18]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

36

[19]

129

[11],[17]

(106)

[13],[18]

Other comprehensive (loss) income

36

[19]

129

[11],[17]

(106)

[13],[18]

Comprehensive Income

(152)

[19]

(70)

[11],[17]

(358)

[13],[18]

Less: Comprehensive (loss) income attributable to noncontrolling interests

0

[19]

0

[11],[17]

0

[13],[18]

Comprehensive Income Attributable to NRG Yield LLC

$ (152)

[19]

$ (70)

[11],[17]

$ (358)

[13],[18]

[1]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[2]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[3]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[4]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[5]

(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.

[6]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

[7]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[8]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[9]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[10]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[11]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[12]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[13]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[14]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[15]

(b) All significant intercompany transactions have been eliminated in consolidation.

[16]

(b) All significant intercompany transactions have been eliminated in consolidation.

[17]

(b) All significant intercompany transactions have been eliminated in consolidation.

[18]

(b) All significant intercompany transactions have been eliminated in consolidation.

[19]

(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina104

Condensed Consolidating Financial Information CP Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 110		$ 429	[1],[2]	$ 59	[1]	$ 22	[1]
Restricted cash	48		47	[2]
Accounts receivable — trade	95		90	[2]
Accounts receivable — affiliate	4		28	[2]
Inventory	35		32	[2]
Notes receivable	7		6	[2]
Prepayments and other current assets	22		22	[2]
Total current assets	321		656	[2]
Property, Plant and Equipment, Net	5,056		5,175	[2]
Investment in consolidated subsidiaries	0		0
Equity investments in affiliates	798		410	[2]
Notes receivable	10		15	[2]
Intangible assets, net	1,362		1,424	[2]
Other non-current assets	61		45	[2]
Total other assets	2,231		1,896	[2]
Total Assets	7,608		7,727	[2]
Current portion of long-term debt — external	241		224	[3]
Accounts payable — trade	23		22	[3]
Accounts payable — affiliate	85		45	[3]
Derivative instruments	39		52	[3]
Accrued expenses and other current liabilities	67		65	[3]
Current Liabilities	455		408	[3]
Other Liabilities
Long-term debt — external	3,976		4,377	[3]
Long-term debt — affiliate	618		337	[3]
Derivative instruments	61		77	[3]
Other non-current liabilities	64		52	[3]
Total non-current liabilities	4,719		4,843	[3]
Total Liabilities	5,174		5,251	[3]
Contributed capital	1,963		2,104	[3]
Retained earnings	93		103	[3]
Accumulated other comprehensive loss	(82)		(65)	[3]
Stockholders' Equity Attributable to Noncontrolling Interest	460		334	[3]
Total Members' Equity	2,434		2,476	[3]
Total Liabilities and Members’ Equity	7,608		7,727	[3]
NRG Yield LLC [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	15	[4],[5]	328	[5],[6],[7],[8],[9]	3	[7],[8],[10],[11]	0	[10],[11]
Restricted cash	0	[4]	0	[6],[9]
Accounts receivable — trade	0	[4]	0	[6],[9]
Accounts receivable — affiliate	55	[4]	0	[6],[9]
Inventory	0	[4]	0	[6],[9]
Notes receivable	0	[4]	0	[6],[9]
Prepayments and other current assets	0	[4]	0	[6],[9]
Total current assets	70	[4]	328	[6],[9]
Property, Plant and Equipment, Net	0	[4]	0	[6],[12]
Investment in consolidated subsidiaries	1,904	[4]	2,070	[6],[9]
Equity investments in affiliates	0	[4]	0	[6],[9]
Notes receivable	0	[4]	0	[6],[9]
Intangible assets, net	0	[4]	0	[6],[9]
Other non-current assets	0	[4]	0	[6],[9]
Total other assets	1,904	[4]	2,070	[6],[9]
Total Assets	1,974	[4]	2,398	[6],[9]
Current portion of long-term debt — external	0	[13]	0	[14],[15]
Accounts payable — trade	0	[13]	0	[14],[15]
Accounts payable — affiliate	0	[13]	256	[14],[15]
Derivative instruments	0	[13]	0	[14],[15]
Accrued expenses and other current liabilities	0	[13]	0	[14],[15]
Current Liabilities	0	[13]	256	[14],[15]
Other Liabilities
Long-term debt — external	0	[13]	0	[14],[15]
Long-term debt — affiliate	0	[13]	0	[14],[15]
Derivative instruments	0	[13]	0	[14],[15]
Other non-current liabilities	0	[13]	0	[14],[15]
Total non-current liabilities	0	[13]	0	[14],[15]
Total Liabilities	0	[13]	256	[14],[15]
Contributed capital	1,963	[13]	2,104	[14],[15]
Retained earnings	93	[13]	103	[14],[15]
Accumulated other comprehensive loss	(82)	[13]	(65)	[14],[15]
Stockholders' Equity Attributable to Noncontrolling Interest	0	[13]	0	[14],[15]
Total Members' Equity	1,974	[13]	2,142	[14],[15]
Total Liabilities and Members’ Equity	1,974	[13]	2,398	[14],[15]
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0		0		0		0
Restricted cash	0		0
Accounts receivable — trade	1		3
Accounts receivable — affiliate	4		17
Inventory	2		1
Notes receivable	0		0
Prepayments and other current assets	1		1
Total current assets	8		22
Property, Plant and Equipment, Net	61		56
Investment in consolidated subsidiaries	548		585
Equity investments in affiliates	70		0
Notes receivable	0		0
Intangible assets, net	57		58
Other non-current assets	0		0
Total other assets	675		643
Total Assets	744		721
Current portion of long-term debt — external	0		0
Accounts payable — trade	1		1
Accounts payable — affiliate	8		8
Derivative instruments	1		0
Accrued expenses and other current liabilities	1		2
Current Liabilities	11		11
Other Liabilities
Long-term debt — external	0		0
Long-term debt — affiliate	0		0
Derivative instruments	0		0
Other non-current liabilities	0		0
Total non-current liabilities	0		0
Total Liabilities	11		11
Contributed capital	821		747
Retained earnings	(85)		(34)
Accumulated other comprehensive loss	(3)		(3)
Stockholders' Equity Attributable to Noncontrolling Interest	0		0
Total Members' Equity	733		710
Total Liabilities and Members’ Equity	744		721
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	95		101	[8],[9]	36	[8],[11]	22	[11]
Restricted cash	48		47	[9]
Accounts receivable — trade	94		87	[9]
Accounts receivable — affiliate	6		111	[9]
Inventory	33		31	[9]
Notes receivable	7		6	[9]
Prepayments and other current assets	21		21	[9]
Total current assets	304		406	[9]
Property, Plant and Equipment, Net	4,995		5,119	[9]
Investment in consolidated subsidiaries	0		0	[9]
Equity investments in affiliates	176		183	[9]
Notes receivable	10		15	[9]
Intangible assets, net	1,305		1,366	[9]
Other non-current assets	59		35	[9]
Total other assets	1,550		1,601	[9]
Total Assets	6,849		7,126	[9]
Current portion of long-term debt — external	244		224	[15]
Accounts payable — trade	19		21	[15]
Accounts payable — affiliate	45		116	[15]
Derivative instruments	38		52	[15]
Accrued expenses and other current liabilities	49		47	[15]
Current Liabilities	395		460	[15]
Other Liabilities
Long-term debt — external	3,176		3,877	[15]
Long-term debt — affiliate	0		0	[15]
Derivative instruments	61		77	[15]
Other non-current liabilities	64		52	[15]
Total non-current liabilities	3,301		4,006	[15]
Total Liabilities	3,696		4,466	[15]
Contributed capital	3,162		2,678	[16]
Retained earnings	(11)		32	[16]
Accumulated other comprehensive loss	(69)		(50)	[16]
Stockholders' Equity Attributable to Noncontrolling Interest	71		0	[16]
Total Members' Equity	3,153		2,660	[16]
Total Liabilities and Members’ Equity	6,849		7,126	[16]
NRG Yield Operating LLC [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0		0	[8],[9]	$ 20	[8],[11]	$ 0	[11]
Restricted cash	0		0	[9]
Accounts receivable — trade	0		0	[9]
Accounts receivable — affiliate	10		268	[9]
Inventory	0		0	[9]
Notes receivable	3		0	[9]
Prepayments and other current assets	0		0	[9]
Total current assets	13		268	[9]
Property, Plant and Equipment, Net	0		0	[9]
Investment in consolidated subsidiaries	3,270		2,785	[9]
Equity investments in affiliates	552		227	[9]
Notes receivable	0		0	[9]
Intangible assets, net	0		0	[9]
Other non-current assets	2		10	[9]
Total other assets	3,824		3,022	[9]
Total Assets	3,837		3,290	[9]
Current portion of long-term debt — external	0		0	[15]
Accounts payable — trade	3		0	[15]
Accounts payable — affiliate	104		33	[15]
Derivative instruments	0		0	[15]
Accrued expenses and other current liabilities	17		16	[15]
Current Liabilities	124		49	[15]
Other Liabilities
Long-term debt — external	800		500	[15]
Long-term debt — affiliate	618		337	[15]
Derivative instruments	0		0	[15]
Other non-current liabilities	0		0	[15]
Total non-current liabilities	1,418		837	[15]
Total Liabilities	1,542		886	[15]
Contributed capital	1,895		2,035	[15]
Retained earnings	93		100	[15]
Accumulated other comprehensive loss	(82)		(65)	[15]
Stockholders' Equity Attributable to Noncontrolling Interest	389		334	[15]
Total Members' Equity	2,295		2,404	[15]
Total Liabilities and Members’ Equity	3,837		3,290	[15]
Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	[17]	0	[9],[12]
Restricted cash	0	[17]	0	[9],[12]
Accounts receivable — trade	0	[17]	0	[9],[12]
Accounts receivable — affiliate	(71)	[17]	(368)	[9],[12]
Inventory	0	[17]	0	[9],[12]
Notes receivable	(3)	[17]	0	[9],[12]
Prepayments and other current assets	0	[17]	0	[9],[12]
Total current assets	(74)	[17]	(368)	[9],[12]
Property, Plant and Equipment, Net	0	[17]	0	[9],[12]
Investment in consolidated subsidiaries	(5,722)	[17]	(5,440)	[9],[12]
Equity investments in affiliates	0	[17]	0	[9],[12]
Notes receivable	0	[17]	0	[9],[12]
Intangible assets, net	0	[17]	0	[9],[12]
Other non-current assets	0	[17]	0	[9],[12]
Total other assets	(5,722)	[17]	(5,440)	[9],[12]
Total Assets	(5,796)	[17]	(5,808)	[9],[12]
Current portion of long-term debt — external	(3)	[18]	0	[15],[16]
Accounts payable — trade	0	[18]	0	[15],[16]
Accounts payable — affiliate	(72)	[18]	(368)	[15],[16]
Derivative instruments	0	[18]	0	[15],[16]
Accrued expenses and other current liabilities	0	[18]	0	[15],[16]
Current Liabilities	(75)	[18]	(368)	[15],[16]
Other Liabilities
Long-term debt — external	0	[18]	0	[15],[16]
Long-term debt — affiliate	0	[18]	0	[15],[16]
Derivative instruments	0	[18]	0	[15],[16]
Other non-current liabilities	0	[18]	0	[15],[16]
Total non-current liabilities	0	[18]	0	[15],[16]
Total Liabilities	(75)	[18]	(368)	[15],[16]
Contributed capital	(5,878)	[18]	(5,460)	[15],[16]
Retained earnings	3	[18]	(98)	[15],[16]
Accumulated other comprehensive loss	154	[18]	118	[15],[16]
Stockholders' Equity Attributable to Noncontrolling Interest	0	[18]	0	[15],[16]
Total Members' Equity	(5,721)	[18]	(5,440)	[15],[16]
Total Liabilities and Members’ Equity	$ (5,796)	[18]	$ (5,808)	[15],[16]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[5]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[6]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[7]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[8]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[12]	(b) All significant intercompany transactions have been eliminated in consolidation.
[13]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[14]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[15]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[16]	(b) All significant intercompany transactions have been eliminated in consolidation.
[17]	(b) All significant intercompany transactions have been eliminated in consolidation.
[18]	(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina105

Condensed Consolidating Financial Information CP Cash Flows (Details) - USD ($) $ in Millions		Jun. 30, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			$ 372		$ 310	[1]	$ 120	[1]
Intercompany transactions between Yield LLC and subsidiaries			0		0
Acquisition of businesses, net of cash acquired			(37)		(901)	[1]	(120)
Capital expenditures			(29)		(33)	[1]	(353)	[1]
Increase (Decrease) in Restricted Cash			(1)		49	[1]	(43)	[1]
Decrease in notes receivable			7		8	[1]	10
Proceeds from Renewable Energy Grants			0		137	[1]	25	[1]
Net investments in unconsolidated affiliates			(360)		7	[1]	(34)	[1]
Other			0		11	[1]	0	[1]
Net Cash Used in Investing Activities			(1,118)		(1,033)	[1]	(515)	[1]
Proceeds from Contributions from Parent			0		2	[1]	171	[1]
Payments of Capital Distribution			(38)		(290)	[1]	(707)	[1]
Transfer of funds under intercompany cash management arrangement			0		0		0
Proceeds from Noncontrolling Interests			122		190	[1]	0	[1]
Proceeds from the issuance of Class C units			599		630	[1]	468	[1]
Payment of distributions			(139)		(101)	[1]	(15)	[1]
Proceeds from issuance of long-term debt — external			557		630	[1]	594	[1]
Proceeds from issuance of long-term debt — affiliate			281		337	[1]	0	[1]
Payment of debt issuance costs			(7)		(28)	[1]	(5)	[1]
Payments for long-term debt — external			(948)		(277)	[1]	(72)	[1]
Net Cash Provided by Financing Activities			427		1,093	[1]	432	[1]
Cash and Cash Equivalents, Period Increase (Decrease)			(319)		370	[1]	37	[1]
Cash and cash equivalents			110		429	[1],[2]	59	[1]	$ 22	[1]
NRG Yield LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			0	[3]	100	[4],[5]	57	[6],[7]
Intercompany transactions between Yield LLC and subsidiaries			(464)	[3]	(630)	[4],[5]
Acquisition of businesses, net of cash acquired			0	[3]	0	[4],[5]	0	[6],[7]
Capital expenditures			0	[3]	0	[4],[5]	0	[6],[7]
Increase (Decrease) in Restricted Cash			0	[3]	0	[4],[5]	0	[6],[7]
Decrease in notes receivable			0	[3]	0	[4],[5]	0	[6],[7]
Proceeds from Renewable Energy Grants					0	[4],[5]	0	[6],[7]
Net investments in unconsolidated affiliates			0	[3]	0	[4],[5]	0	[6],[7]
Other	[4],[5]				0
Net Cash Used in Investing Activities			(464)	[3]	(630)	[4],[5]	0	[6],[7]
Proceeds from Contributions from Parent					0	[4],[5]	0	[6],[7]
Payments of Capital Distribution			0	[3]	0	[4],[5]	(395)	[6],[7]
Transfer of funds under intercompany cash management arrangement			(309)	[3]	326	[4],[5]	(112)	[6],[7]
Proceeds from Noncontrolling Interests			0	[3]	0	[4],[5]
Proceeds from the issuance of Class C units			599	[3]	630	[4],[5]	468	[6],[7]
Payment of distributions			(139)	[3]	(101)	[4],[5]	(15)	[6],[7]
Proceeds from issuance of long-term debt — external			0	[3]	0	[4],[5]	0	[6],[7]
Proceeds from issuance of long-term debt — affiliate			0	[3]	0	[4],[5]
Payment of debt issuance costs	[3]		0
Payments for long-term debt — external			0	[3]	0	[4],[5]	0	[6],[7]
Net Cash Provided by Financing Activities			151	[3]	855	[4],[5]	(54)	[6],[7]
Cash and Cash Equivalents, Period Increase (Decrease)			(313)	[3]	325	[4],[5]	3	[6],[7]
Cash and cash equivalents			15	[3],[8]	328	[3],[4],[5],[9],[10]	3	[4],[5],[6],[7]	0	[6],[7]
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			19		12		26
Intercompany transactions between Yield LLC and subsidiaries			0		0
Acquisition of businesses, net of cash acquired			0		0		0
Capital expenditures			0		0		0
Increase (Decrease) in Restricted Cash			0		0		0
Decrease in notes receivable			0		0		0
Proceeds from Renewable Energy Grants					0		0
Net investments in unconsolidated affiliates			(28)		0		0
Other					0
Net Cash Used in Investing Activities			(28)		0		0
Proceeds from Contributions from Parent					0		0
Payments of Capital Distribution			0		0		0
Transfer of funds under intercompany cash management arrangement			9		(12)		0
Proceeds from Noncontrolling Interests			0		0
Proceeds from the issuance of Class C units			0		0		0
Payment of distributions			0		0		0
Proceeds from issuance of long-term debt — external			0		0		0
Proceeds from issuance of long-term debt — affiliate			0		0
Payment of debt issuance costs			0
Payments for long-term debt — external			0		0		(26)
Net Cash Provided by Financing Activities			9		(12)		(26)
Cash and Cash Equivalents, Period Increase (Decrease)			0		0		0
Cash and cash equivalents			0		0		0		0
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			265		112	[5]	24	[7]
Intercompany transactions between Yield LLC and subsidiaries			0		0	[5]
Acquisition of businesses, net of cash acquired			0		0	[5]	0	[7]
Capital expenditures			(29)		(33)	[5]	(353)	[7]
Increase (Decrease) in Restricted Cash			(1)		49	[5]	(43)	[7]
Decrease in notes receivable			7		6	[5]	8	[7]
Proceeds from Renewable Energy Grants					137	[5]	25	[7]
Net investments in unconsolidated affiliates			0		0	[5]	0	[7]
Other	[5]				11
Net Cash Used in Investing Activities			(23)		216	[5]	(363)	[7]
Proceeds from Contributions from Parent					2	[5]	171	[7]
Payments of Capital Distribution			(38)		(290)	[5]	(312)	[7]
Transfer of funds under intercompany cash management arrangement			0		0	[5]	0	[7]
Proceeds from Noncontrolling Interests			0		190	[5]
Proceeds from the issuance of Class C units			0		0	[5]	0	[7]
Payment of distributions			0		0	[5]	0	[7]
Proceeds from issuance of long-term debt — external			5		130	[5]	594	[7]
Proceeds from issuance of long-term debt — affiliate			0		0	[5]
Payment of debt issuance costs			(6)
Payments for long-term debt — external			(209)		(277)	[5]	(46)	[7]
Net Cash Provided by Financing Activities			(248)		(263)	[5]	353	[7]
Cash and Cash Equivalents, Period Increase (Decrease)			(6)		65	[5]	14	[7]
Cash and cash equivalents			95		101	[5],[10]	36	[5],[7]	22	[7]
NRG Yield Operating LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			88		86	[5]	13	[7]
Intercompany transactions between Yield LLC and subsidiaries			464		630	[5]
Acquisition of businesses, net of cash acquired			(37)		(901)	[5]	(120)	[7]
Capital expenditures			0		0	[5]	0	[7]
Increase (Decrease) in Restricted Cash			0		0	[5]	0	[7]
Decrease in notes receivable			0		2	[5]	2	[7]
Proceeds from Renewable Energy Grants					0	[5]	0	[7]
Net investments in unconsolidated affiliates			(332)		7	[5]	(34)	[7]
Other	[5]				0
Net Cash Used in Investing Activities			(603)		(619)	[5]	(152)	[7]
Proceeds from Contributions from Parent					0	[5]	0	[7]
Payments of Capital Distribution			0		0	[5]	0	[7]
Transfer of funds under intercompany cash management arrangement			300		(314)	[5]	112	[7]
Proceeds from Noncontrolling Interests			122		0	[5]
Proceeds from the issuance of Class C units			0		0	[5]	0	[7]
Payment of distributions			0		0	[5]	0	[7]
Proceeds from issuance of long-term debt — external			552		500	[5]	0	[7]
Proceeds from issuance of long-term debt — affiliate			281		337	[5]
Payment of debt issuance costs			(1)
Payments for long-term debt — external			(739)		0	[5]	0	[7]
Net Cash Provided by Financing Activities			515		513	[5]	159	[7]
Cash and Cash Equivalents, Period Increase (Decrease)			0		(20)	[5]	20	[7]
Cash and cash equivalents			0		0	[5],[10]	$ 20	[5],[7]	$ 0	[7]
Consolidation, Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents			0	[11]	0	[10],[12]
Drop-down Acquisition [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired		$ (357)	(698)		(311)
Drop-down Acquisition [Member] | NRG Yield LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0	[3]	0	[4],[5]
Drop-down Acquisition [Member] | Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0		0
Drop-down Acquisition [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0		(46)	[5]
Drop-down Acquisition [Member] | NRG Yield Operating LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			$ (698)		$ (357)	[5]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[4]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[5]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[7]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[9]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[10]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[11]	(b) All significant intercompany transactions have been eliminated in consolidation.
[12]	(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina106

Condensed Consolidating Financial Information PP Income Statement (Details) - USD ($) $ in Millions	3 Months Ended															12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014	[2]	Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Condensed Income Statements, Captions [Line Items]
Revenues	$ 209	$ 225		$ 235		$ 200		$ 212		$ 199		$ 194		$ 141		$ 869		$ 746	[3]	$ 387	[3]
Operating Costs and Expenses [Abstract]
Cost of operations																312		266	[3]	148	[3]
Depreciation and amortization																265		202	[3],[4]	74	[3],[4]
General and administrative																10		8	[3]	7	[3]
Acquisition-related transaction and integration costs																3		4	[3]	0	[3]
Total operating costs and expenses																590		480	[3]	229	[3]
Operating Income (Loss)	67	81		85		46		70		85		60		51		279		266	[3]	158	[3]
Equity in earnings (losses) of consolidated affiliates																0		0		0
Equity in earnings of unconsolidated affiliates																35		25	[3]	22	[3]
Other income, net																2		3	[3]	3	[3]
Interest expense																(229)		(186)	[3]	(52)	[3]
Total other income (expense), net																(201)		(158)	[3]	(27)	[3]
Net Income (Loss)	$ 21	$ 36		$ 44		$ (23)		$ (6)		$ 48		$ 39		$ 27		78		108	[3],[5],[6]	134	[3],[4],[5],[6]
Net Income (Loss) Attributable to Noncontrolling Interest																(51)		3	[3]	(2)	[3]
Net Income (Loss) Attributable to NRG Yield LLC																129		105	[3]	136	[3]
NRG Yield LLC [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																0	[7]	0	[8],[9]
Operating Costs and Expenses [Abstract]
Cost of operations																0	[7]	0	[8],[9]	0	[10],[11]
Depreciation and amortization																0	[7]	0	[8],[9]	0	[10],[11]
General and administrative																0	[7]	0	[8],[9]	0	[10],[11]
Acquisition-related transaction and integration costs																0	[7]	0	[8],[9]
Total operating costs and expenses																0	[7]	0	[8],[9]	0	[10],[11]
Operating Income (Loss)																0	[7]	0	[8],[9]	0	[10],[11]
Equity in earnings (losses) of consolidated affiliates																129	[7]	104	[8],[9]	133	[10],[11]
Equity in earnings of unconsolidated affiliates																0	[7]	0	[8],[9]	0	[10],[11]
Other income, net																0	[7]	1	[8],[9]	0	[10],[11]
Interest expense																0	[7]	0	[8],[9]	0	[10],[11]
Total other income (expense), net																129	[7]	105	[8],[9]	133	[10],[11]
Net Income (Loss)																129	[12]	105	[8],[9],[13],[14]	136	[15],[16]
Net Income (Loss) Attributable to Noncontrolling Interest																0	[7]	0	[8],[9]	0	[10],[11]
Net Income (Loss) Attributable to NRG Yield LLC																129	[7]	105	[8],[9]	136	[10],[11]
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																21		24		0	[10],[11]
Operating Costs and Expenses [Abstract]
Cost of operations																14		16		0
Depreciation and amortization																4		4		0
General and administrative																0		0		0
Acquisition-related transaction and integration costs																0		0
Total operating costs and expenses																18		20		0
Operating Income (Loss)																3		4		0
Equity in earnings (losses) of consolidated affiliates																(43)		(22)		3
Equity in earnings of unconsolidated affiliates																(1)		0		0
Other income, net																0		0		0
Interest expense																0		0		0
Total other income (expense), net																(44)		(22)		3
Net Income (Loss)																(41)		(18)		3
Net Income (Loss) Attributable to Noncontrolling Interest																0		0		0
Net Income (Loss) Attributable to NRG Yield LLC																(41)		(18)		3
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																838		722	[9]	387	[11]
Operating Costs and Expenses [Abstract]
Cost of operations																298		250	[9]	148	[11]
Depreciation and amortization																261		198	[9]	74	[11]
General and administrative																0		0	[9]	0	[11]
Acquisition-related transaction and integration costs																0		0	[9]
Total operating costs and expenses																559		448	[9]	222	[11]
Operating Income (Loss)																279		274	[9]	165	[11]
Equity in earnings (losses) of consolidated affiliates																0		0	[9]	0	[11]
Equity in earnings of unconsolidated affiliates																3		(2)	[9]	0	[11]
Other income, net																2		2	[9]	3	[11]
Interest expense																(177)		(161)	[9]	(52)	[11]
Total other income (expense), net																(181)		(161)	[9]	(49)	[11]
Net Income (Loss)																98		113	[9],[14]	116	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																(2)		0	[9]	0	[11]
Net Income (Loss) Attributable to NRG Yield LLC																100		113	[9]	116	[11]
NRG Yield Operating LLC [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																10		0	[9]	0	[11]
Operating Costs and Expenses [Abstract]
Cost of operations																0		0	[9]	0	[11]
Depreciation and amortization																0		0	[9]	0	[11]
General and administrative																10		8	[9]	7	[11]
Acquisition-related transaction and integration costs																3		4	[9]
Total operating costs and expenses																13		12	[9]	7	[11]
Operating Income (Loss)																(3)		(12)	[9]	(7)	[11]
Equity in earnings (losses) of consolidated affiliates																102		117	[9]	116	[11]
Equity in earnings of unconsolidated affiliates																33		27	[9]	22	[11]
Other income, net																0		0	[9]	0	[11]
Interest expense																(52)		(25)	[9]	0	[11]
Total other income (expense), net																83		119	[9]	138	[11]
Net Income (Loss)																80		107	[9],[14]	131	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																(49)		3	[9]	(2)	[11]
Net Income (Loss) Attributable to NRG Yield LLC																129		104	[9]	133	[11]
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Revenues																0	[17]	0	[9],[18]	0	[11],[19]
Operating Costs and Expenses [Abstract]
Cost of operations																0	[17]	0	[9],[18]	0	[11],[19]
Depreciation and amortization																0	[17]	0	[9],[18]	0	[11],[19]
General and administrative																0	[17]	0	[9],[18]	0	[11],[19]
Acquisition-related transaction and integration costs																0	[17]	0	[9],[18]
Total operating costs and expenses																0	[17]	0	[9],[18]	0	[11],[19]
Operating Income (Loss)																0	[17]	0	[9],[18]	0	[11],[19]
Equity in earnings (losses) of consolidated affiliates																(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Equity in earnings of unconsolidated affiliates																0	[17]	0	[9],[18]	0	[11],[19]
Other income, net																0	[17]	0	[9],[18]	0	[11],[19]
Interest expense																0	[17]	0	[9],[18]	0	[11],[19]
Total other income (expense), net																(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Net Income (Loss)																(188)	[17]	(199)	[9],[14],[18],[20]	(252)	[16],[21]
Net Income (Loss) Attributable to Noncontrolling Interest																0	[17]	0	[9],[18]	0	[11],[19]
Net Income (Loss) Attributable to NRG Yield LLC																$ (188)	[17]	$ (199)	[9],[18]	$ (252)	[11],[19]
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[7]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[8]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[12]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[13]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[14]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[15]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[16]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[17]	(b) All significant intercompany transactions have been eliminated in consolidation.
[18]	(b) All significant intercompany transactions have been eliminated in consolidation.
[19]	(b) All significant intercompany transactions have been eliminated in consolidation.
[20]	(b) All significant intercompany transactions have been eliminated in consolidation.
[21]	(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina107

Condensed Consolidating Financial Information PP Comprehensive Income (Details) - USD ($) $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2015

Sep. 30, 2015

[1]

Jun. 30, 2015

[1]

Mar. 31, 2015

[1]

Dec. 31, 2014

[2]

Sep. 30, 2014

[2]

Jun. 30, 2014

[2]

Mar. 31, 2014

[2]

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

$ 21

$ 36

$ 44

$ (23)

$ (6)

$ 48

$ 39

$ 27

$ 78

$ 108

[3],[4],[5]

$ 134

[3],[4],[5],[6]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(18)

(66)

[4]

47

[4]

Other comprehensive (loss) income

(18)

(66)

[4]

47

[4]

Comprehensive Income

60

42

[4]

181

[4]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

(52)

1

(2)

Comprehensive Income Attributable to NRG Yield LLC

112

41

[4]

183

[4]

NRG Yield LLC [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

129

[7]

105

[8],[9],[10],[11]

136

[12],[13]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(17)

[7]

(64)

[9],[11]

47

[12],[13]

Other comprehensive (loss) income

(17)

[7]

(64)

[9],[11]

47

[12],[13]

Comprehensive Income

112

[7]

41

[9],[11]

183

[12],[13]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

0

[7]

0

[9],[11]

0

[12],[13]

Comprehensive Income Attributable to NRG Yield LLC

112

[7]

41

[9],[11]

183

[12],[13]

Guarantor Subsidiaries [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

(41)

(18)

3

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

0

0

3

Other comprehensive (loss) income

0

0

3

Comprehensive Income

(41)

(18)

6

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

0

0

0

Comprehensive Income Attributable to NRG Yield LLC

(41)

(18)

6

Non-Guarantor Subsidiaries [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

98

113

[10],[11]

116

[14]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(19)

(65)

[11]

56

[13]

Other comprehensive (loss) income

(19)

(65)

[11]

56

[13]

Comprehensive Income

79

48

[11]

172

[13]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

0

0

[11]

0

[13]

Comprehensive Income Attributable to NRG Yield LLC

79

48

[11]

172

[13]

NRG Yield Operating LLC [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

80

107

[10],[11]

131

[14]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

(18)

(66)

[11]

47

[13]

Other comprehensive (loss) income

(18)

(66)

[11]

47

[13]

Comprehensive Income

62

41

[11]

178

[13]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

(52)

1

[11]

(2)

[13]

Comprehensive Income Attributable to NRG Yield LLC

114

40

[11]

180

[13]

Consolidation, Eliminations [Member]

Condensed Statement of Income Captions [Line Items]

Net Income (Loss)

(188)

[15]

(199)

[10],[11],[16],[17]

(252)

[13],[18]

Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax

36

[19]

129

[11],[17]

(106)

[13],[18]

Other comprehensive (loss) income

36

[19]

129

[11],[17]

(106)

[13],[18]

Comprehensive Income

(152)

[19]

(70)

[11],[17]

(358)

[13],[18]

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest

0

[19]

0

[11],[17]

0

[13],[18]

Comprehensive Income Attributable to NRG Yield LLC

$ (152)

[19]

$ (70)

[11],[17]

$ (358)

[13],[18]

[1]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[2]

(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.

[3]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[4]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[5]

(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.

[6]

(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

[7]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[8]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[9]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[10]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[11]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[12]

(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

[13]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[14]

(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.

[15]

(b) All significant intercompany transactions have been eliminated in consolidation.

[16]

(b) All significant intercompany transactions have been eliminated in consolidation.

[17]

(b) All significant intercompany transactions have been eliminated in consolidation.

[18]

(b) All significant intercompany transactions have been eliminated in consolidation.

[19]

(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina108

Condensed Consolidating Financial Information PP Balance Sheet (Details) - USD ($) $ in Millions		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		$ 110		$ 429	[1],[2]	$ 59	[1]	$ 22	[1]
Restricted cash		48		47	[2]
Accounts receivable — trade		95		90	[2]
Accounts receivable — affiliate		4		28	[2]
Inventory		35		32	[2]
Derivative Instruments and Hedges, Assets				2
Notes receivable		7		6	[2]
Prepayments and other current assets		22		22	[2]
Total current assets		321		656	[2]
Property, Plant and Equipment, Net		5,056		5,175	[2]
Investment in consolidated subsidiaries		0		0
Equity investments in affiliates		798		410	[2]
Notes receivable		10		15	[2]
Intangible assets, net		1,362		1,424	[2]
Derivative instruments		0		2	[2]
Other non-current assets		61		45	[2]
Total other assets		2,231		1,896	[2]
Total Assets		7,608		7,727	[2]
Current portion of long-term debt — external		241		224	[3]
Accounts payable — trade		23		22	[3]
Accounts payable — affiliate		85		45	[3]
Derivative instruments		39		52	[3]
Accrued expenses and other current liabilities		67		65	[3]
Current Liabilities		455		408	[3]
Other Liabilities
Long-term debt — external		3,976		4,377	[3]
Long-term debt — affiliate		618		337	[3]
Derivative instruments		61		77	[3]
Other non-current liabilities		64		52	[3]
Total non-current liabilities		4,719		4,843	[3]
Total Liabilities		5,174		5,251	[3]
Contributed capital		1,963		2,104	[3]
Retained earnings		93		103	[3]
Accumulated other comprehensive loss		(82)		(65)	[3]
Stockholders' Equity Attributable to Noncontrolling Interest		460		334	[3]
Total Members' Equity		2,434		2,476	[3]
Total Liabilities and Members’ Equity		7,608		7,727	[3]
NRG Yield LLC [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		15	[4],[5]	328	[5],[6],[7],[8],[9]	3	[7],[8],[10],[11]	0	[10],[11]
Restricted cash		0	[4]	0	[6],[9]
Accounts receivable — trade		0	[4]	0	[6],[9]
Accounts receivable — affiliate		55	[4]	0	[6],[9]
Inventory		0	[4]	0	[6],[9]
Derivative Instruments and Hedges, Assets	[6],[9]			0
Notes receivable		0	[4]	0	[6],[9]
Prepayments and other current assets		0	[4]	0	[6],[9]
Total current assets		70	[4]	328	[6],[9]
Property, Plant and Equipment, Net		0	[4]	0	[6],[12]
Investment in consolidated subsidiaries		1,904	[4]	2,070	[6],[9]
Equity investments in affiliates		0	[4]	0	[6],[9]
Notes receivable		0	[4]	0	[6],[9]
Intangible assets, net		0	[4]	0	[6],[9]
Derivative instruments	[6],[9]			0
Other non-current assets		0	[4]	0	[6],[9]
Total other assets		1,904	[4]	2,070	[6],[9]
Total Assets		1,974	[4]	2,398	[6],[9]
Current portion of long-term debt — external		0	[13]	0	[14],[15]
Accounts payable — trade		0	[13]	0	[14],[15]
Accounts payable — affiliate		0	[13]	256	[14],[15]
Derivative instruments		0	[13]	0	[14],[15]
Accrued expenses and other current liabilities		0	[13]	0	[14],[15]
Current Liabilities		0	[13]	256	[14],[15]
Other Liabilities
Long-term debt — external		0	[13]	0	[14],[15]
Long-term debt — affiliate		0	[13]	0	[14],[15]
Derivative instruments		0	[13]	0	[14],[15]
Other non-current liabilities		0	[13]	0	[14],[15]
Total non-current liabilities		0	[13]	0	[14],[15]
Total Liabilities		0	[13]	256	[14],[15]
Contributed capital		1,963	[13]	2,104	[14],[15]
Retained earnings		93	[13]	103	[14],[15]
Accumulated other comprehensive loss		(82)	[13]	(65)	[14],[15]
Stockholders' Equity Attributable to Noncontrolling Interest		0	[13]	0	[14],[15]
Total Members' Equity		1,974	[13]	2,142	[14],[15]
Total Liabilities and Members’ Equity		1,974	[13]	2,398	[14],[15]
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		0		0		0		0
Restricted cash		0		0
Accounts receivable — trade		1		3
Accounts receivable — affiliate		4		17
Inventory		2		1
Derivative Instruments and Hedges, Assets				0
Notes receivable		0		0
Prepayments and other current assets		1		1
Total current assets		8		22
Property, Plant and Equipment, Net		61		56
Investment in consolidated subsidiaries		548		585
Equity investments in affiliates		70		0
Notes receivable		0		0
Intangible assets, net		57		58
Derivative instruments				0
Other non-current assets		0		0
Total other assets		675		643
Total Assets		744		721
Current portion of long-term debt — external		0		0
Accounts payable — trade		1		1
Accounts payable — affiliate		8		8
Derivative instruments		1		0
Accrued expenses and other current liabilities		1		2
Current Liabilities		11		11
Other Liabilities
Long-term debt — external		0		0
Long-term debt — affiliate		0		0
Derivative instruments		0		0
Other non-current liabilities		0		0
Total non-current liabilities		0		0
Total Liabilities		11		11
Contributed capital		821		747
Retained earnings		(85)		(34)
Accumulated other comprehensive loss		(3)		(3)
Stockholders' Equity Attributable to Noncontrolling Interest		0		0
Total Members' Equity		733		710
Total Liabilities and Members’ Equity		744		721
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		95		101	[8],[9]	36	[8],[11]	22	[11]
Restricted cash		48		47	[9]
Accounts receivable — trade		94		87	[9]
Accounts receivable — affiliate		6		111	[9]
Inventory		33		31	[9]
Derivative Instruments and Hedges, Assets	[9]			2
Notes receivable		7		6	[9]
Prepayments and other current assets		21		21	[9]
Total current assets		304		406	[9]
Property, Plant and Equipment, Net		4,995		5,119	[9]
Investment in consolidated subsidiaries		0		0	[9]
Equity investments in affiliates		176		183	[9]
Notes receivable		10		15	[9]
Intangible assets, net		1,305		1,366	[9]
Derivative instruments	[9]			2
Other non-current assets		59		35	[9]
Total other assets		1,550		1,601	[9]
Total Assets		6,849		7,126	[9]
Current portion of long-term debt — external		244		224	[15]
Accounts payable — trade		19		21	[15]
Accounts payable — affiliate		45		116	[15]
Derivative instruments		38		52	[15]
Accrued expenses and other current liabilities		49		47	[15]
Current Liabilities		395		460	[15]
Other Liabilities
Long-term debt — external		3,176		3,877	[15]
Long-term debt — affiliate		0		0	[15]
Derivative instruments		61		77	[15]
Other non-current liabilities		64		52	[15]
Total non-current liabilities		3,301		4,006	[15]
Total Liabilities		3,696		4,466	[15]
Contributed capital		3,162		2,678	[16]
Retained earnings		(11)		32	[16]
Accumulated other comprehensive loss		(69)		(50)	[16]
Stockholders' Equity Attributable to Noncontrolling Interest		71		0	[16]
Total Members' Equity		3,153		2,660	[16]
Total Liabilities and Members’ Equity		6,849		7,126	[16]
NRG Yield Operating LLC [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		0		0	[8],[9]	$ 20	[8],[11]	$ 0	[11]
Restricted cash		0		0	[9]
Accounts receivable — trade		0		0	[9]
Accounts receivable — affiliate		10		268	[9]
Inventory		0		0	[9]
Derivative Instruments and Hedges, Assets	[9]			0
Notes receivable		3		0	[9]
Prepayments and other current assets		0		0	[9]
Total current assets		13		268	[9]
Property, Plant and Equipment, Net		0		0	[9]
Investment in consolidated subsidiaries		3,270		2,785	[9]
Equity investments in affiliates		552		227	[9]
Notes receivable		0		0	[9]
Intangible assets, net		0		0	[9]
Derivative instruments	[9]			0
Other non-current assets		2		10	[9]
Total other assets		3,824		3,022	[9]
Total Assets		3,837		3,290	[9]
Current portion of long-term debt — external		0		0	[15]
Accounts payable — trade		3		0	[15]
Accounts payable — affiliate		104		33	[15]
Derivative instruments		0		0	[15]
Accrued expenses and other current liabilities		17		16	[15]
Current Liabilities		124		49	[15]
Other Liabilities
Long-term debt — external		800		500	[15]
Long-term debt — affiliate		618		337	[15]
Derivative instruments		0		0	[15]
Other non-current liabilities		0		0	[15]
Total non-current liabilities		1,418		837	[15]
Total Liabilities		1,542		886	[15]
Contributed capital		1,895		2,035	[15]
Retained earnings		93		100	[15]
Accumulated other comprehensive loss		(82)		(65)	[15]
Stockholders' Equity Attributable to Noncontrolling Interest		389		334	[15]
Total Members' Equity		2,295		2,404	[15]
Total Liabilities and Members’ Equity		3,837		3,290	[15]
Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents		0	[17]	0	[9],[12]
Restricted cash		0	[17]	0	[9],[12]
Accounts receivable — trade		0	[17]	0	[9],[12]
Accounts receivable — affiliate		(71)	[17]	(368)	[9],[12]
Inventory		0	[17]	0	[9],[12]
Derivative Instruments and Hedges, Assets	[9],[12]			0
Notes receivable		(3)	[17]	0	[9],[12]
Prepayments and other current assets		0	[17]	0	[9],[12]
Total current assets		(74)	[17]	(368)	[9],[12]
Property, Plant and Equipment, Net		0	[17]	0	[9],[12]
Investment in consolidated subsidiaries		(5,722)	[17]	(5,440)	[9],[12]
Equity investments in affiliates		0	[17]	0	[9],[12]
Notes receivable		0	[17]	0	[9],[12]
Intangible assets, net		0	[17]	0	[9],[12]
Derivative instruments	[9],[12]			0
Other non-current assets		0	[17]	0	[9],[12]
Total other assets		(5,722)	[17]	(5,440)	[9],[12]
Total Assets		(5,796)	[17]	(5,808)	[9],[12]
Current portion of long-term debt — external		(3)	[18]	0	[15],[16]
Accounts payable — trade		0	[18]	0	[15],[16]
Accounts payable — affiliate		(72)	[18]	(368)	[15],[16]
Derivative instruments		0	[18]	0	[15],[16]
Accrued expenses and other current liabilities		0	[18]	0	[15],[16]
Current Liabilities		(75)	[18]	(368)	[15],[16]
Other Liabilities
Long-term debt — external		0	[18]	0	[15],[16]
Long-term debt — affiliate		0	[18]	0	[15],[16]
Derivative instruments		0	[18]	0	[15],[16]
Other non-current liabilities		0	[18]	0	[15],[16]
Total non-current liabilities		0	[18]	0	[15],[16]
Total Liabilities		(75)	[18]	(368)	[15],[16]
Contributed capital		(5,878)	[18]	(5,460)	[15],[16]
Retained earnings		3	[18]	(98)	[15],[16]
Accumulated other comprehensive loss		154	[18]	118	[15],[16]
Stockholders' Equity Attributable to Noncontrolling Interest		0	[18]	0	[15],[16]
Total Members' Equity		(5,721)	[18]	(5,440)	[15],[16]
Total Liabilities and Members’ Equity		$ (5,796)	[18]	$ (5,808)	[15],[16]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[5]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[6]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[7]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[8]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[12]	(b) All significant intercompany transactions have been eliminated in consolidation.
[13]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[14]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[15]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[16]	(b) All significant intercompany transactions have been eliminated in consolidation.
[17]	(b) All significant intercompany transactions have been eliminated in consolidation.
[18]	(b) All significant intercompany transactions have been eliminated in consolidation.

Condensed Consolidating Fina109

Condensed Consolidating Financial Information PP Cash Flows (Details) - USD ($) $ in Millions		Jun. 30, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			$ 372		$ 310	[1]	$ 120	[1]
Intercompany (Payments to) Receipts from Consolidated Subsidiaries			0		0
Acquisition of businesses, net of cash acquired			(37)		(901)	[1]	(120)
Capital expenditures			(29)		(33)	[1]	(353)	[1]
Increase (Decrease) in Restricted Cash			(1)		49	[1]	(43)	[1]
Decrease in notes receivable			7		8	[1]	10
Proceeds from Renewable Energy Grants			0		137	[1]	25	[1]
Net investments in unconsolidated affiliates			(360)		7	[1]	(34)	[1]
Other			0		11	[1]	0	[1]
Net Cash Used in Investing Activities			(1,118)		(1,033)	[1]	(515)	[1]
Proceeds from Noncontrolling Interests			122		190	[1]	0	[1]
Capital contributions from NRG			0		2	[1]	171	[1]
Distributions and return of capital to NRG			(38)		(290)	[1]	(707)	[1]
Proceeds from the issuance of Class C and Class A units			599		630	[1]	468	[1]
Transfer of funds under intercompany cash management arrangement			0		0		0
Payment of distributions			(139)		(101)	[1]	(15)	[1]
Proceeds from issuance of long-term debt — external			557		630	[1]	594	[1]
Payments for long-term debt — external			(948)		(277)	[1]	(72)	[1]
Repayments of Related Party Debt							2
Proceeds from issuance of long-term debt — affiliate			281		337	[1]	0	[1]
Payment of debt issuance costs					(28)		(5)
Net Cash Provided by Financing Activities			427		1,093	[1]	432	[1]
Cash and Cash Equivalents, Period Increase (Decrease)			(319)		370	[1]	37	[1]
NRG Yield LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			0	[2]	100	[3],[4]	57	[5],[6]
Intercompany (Payments to) Receipts from Consolidated Subsidiaries			(464)	[2]	(630)	[3],[4]
Acquisition of businesses, net of cash acquired			0	[2]	0	[3],[4]	0	[5],[6]
Capital expenditures			0	[2]	0	[3],[4]	0	[5],[6]
Increase (Decrease) in Restricted Cash			0	[2]	0	[3],[4]	0	[5],[6]
Decrease in notes receivable			0	[2]	0	[3],[4]	0	[5],[6]
Proceeds from Renewable Energy Grants					0	[3],[4]	0	[5],[6]
Net investments in unconsolidated affiliates			0	[2]	0	[3],[4]	0	[5],[6]
Other	[3],[4]				0
Net Cash Used in Investing Activities			(464)	[2]	(630)	[3],[4]	0	[5],[6]
Proceeds from Noncontrolling Interests			0	[2]	0	[3],[4]
Capital contributions from NRG					0	[3],[4]	0	[5],[6]
Distributions and return of capital to NRG			0	[2]	0	[3],[4]	(395)	[5],[6]
Proceeds from the issuance of Class C and Class A units			599	[2]	630	[3],[4]	468	[5],[6]
Transfer of funds under intercompany cash management arrangement			(309)	[2]	326	[3],[4]	(112)	[5],[6]
Payment of distributions			(139)	[2]	(101)	[3],[4]	(15)	[5],[6]
Proceeds from issuance of long-term debt — external			0	[2]	0	[3],[4]	0	[5],[6]
Payments for long-term debt — external			0	[2]	0	[3],[4]	0	[5],[6]
Repayments of Related Party Debt	[5],[6]						0
Proceeds from issuance of long-term debt — affiliate			0	[2]	0	[3],[4]
Payment of debt issuance costs					0	[3],[4]	0	[5],[6]
Net Cash Provided by Financing Activities			151	[2]	855	[3],[4]	(54)	[5],[6]
Cash and Cash Equivalents, Period Increase (Decrease)			(313)	[2]	325	[3],[4]	3	[5],[6]
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			19		12		26
Intercompany (Payments to) Receipts from Consolidated Subsidiaries			0		0
Acquisition of businesses, net of cash acquired			0		0		0
Capital expenditures			0		0		0
Increase (Decrease) in Restricted Cash			0		0		0
Decrease in notes receivable			0		0		0
Proceeds from Renewable Energy Grants					0		0
Net investments in unconsolidated affiliates			(28)		0		0
Other					0
Net Cash Used in Investing Activities			(28)		0		0
Proceeds from Noncontrolling Interests			0		0
Capital contributions from NRG					0		0
Distributions and return of capital to NRG			0		0		0
Proceeds from the issuance of Class C and Class A units			0		0		0
Transfer of funds under intercompany cash management arrangement			9		(12)		0
Payment of distributions			0		0		0
Proceeds from issuance of long-term debt — external			0		0		0
Payments for long-term debt — external			0		0		(26)
Repayments of Related Party Debt							0
Proceeds from issuance of long-term debt — affiliate			0		0
Payment of debt issuance costs					0		0
Net Cash Provided by Financing Activities			9		(12)		(26)
Cash and Cash Equivalents, Period Increase (Decrease)			0		0		0
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			265		112	[4]	24	[6]
Intercompany (Payments to) Receipts from Consolidated Subsidiaries			0		0	[4]
Acquisition of businesses, net of cash acquired			0		0	[4]	0	[6]
Capital expenditures			(29)		(33)	[4]	(353)	[6]
Increase (Decrease) in Restricted Cash			(1)		49	[4]	(43)	[6]
Decrease in notes receivable			7		6	[4]	8	[6]
Proceeds from Renewable Energy Grants					137	[4]	25	[6]
Net investments in unconsolidated affiliates			0		0	[4]	0	[6]
Other	[4]				11
Net Cash Used in Investing Activities			(23)		216	[4]	(363)	[6]
Proceeds from Noncontrolling Interests			0		190	[4]
Capital contributions from NRG					2	[4]	171	[6]
Distributions and return of capital to NRG			(38)		(290)	[4]	(312)	[6]
Proceeds from the issuance of Class C and Class A units			0		0	[4]	0	[6]
Transfer of funds under intercompany cash management arrangement			0		0	[4]	0	[6]
Payment of distributions			0		0	[4]	0	[6]
Proceeds from issuance of long-term debt — external			5		130	[4]	594	[6]
Payments for long-term debt — external			(209)		(277)	[4]	(46)	[6]
Repayments of Related Party Debt	[6]						2
Proceeds from issuance of long-term debt — affiliate			0		0	[4]
Payment of debt issuance costs					(18)	[4]	(4)	[6]
Net Cash Provided by Financing Activities			(248)		(263)	[4]	353	[6]
Cash and Cash Equivalents, Period Increase (Decrease)			(6)		65	[4]	14	[6]
NRG Yield Operating LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by Operating Activities			88		86	[4]	13	[6]
Intercompany (Payments to) Receipts from Consolidated Subsidiaries			464		630	[4]
Acquisition of businesses, net of cash acquired			(37)		(901)	[4]	(120)	[6]
Capital expenditures			0		0	[4]	0	[6]
Increase (Decrease) in Restricted Cash			0		0	[4]	0	[6]
Decrease in notes receivable			0		2	[4]	2	[6]
Proceeds from Renewable Energy Grants					0	[4]	0	[6]
Net investments in unconsolidated affiliates			(332)		7	[4]	(34)	[6]
Other	[4]				0
Net Cash Used in Investing Activities			(603)		(619)	[4]	(152)	[6]
Proceeds from Noncontrolling Interests			122		0	[4]
Capital contributions from NRG					0	[4]	0	[6]
Distributions and return of capital to NRG			0		0	[4]	0	[6]
Proceeds from the issuance of Class C and Class A units			0		0	[4]	0	[6]
Transfer of funds under intercompany cash management arrangement			300		(314)	[4]	112	[6]
Payment of distributions			0		0	[4]	0	[6]
Proceeds from issuance of long-term debt — external			552		500	[4]	0	[6]
Payments for long-term debt — external			(739)		0	[4]	0	[6]
Repayments of Related Party Debt	[6]						0
Proceeds from issuance of long-term debt — affiliate			281		337	[4]
Payment of debt issuance costs					(10)	[4]	(1)	[6]
Net Cash Provided by Financing Activities			515		513	[4]	159	[6]
Cash and Cash Equivalents, Period Increase (Decrease)			0		(20)	[4]	$ 20	[6]
Drop-down Acquisition [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired		$ (357)	(698)		(311)
Drop-down Acquisition [Member] | NRG Yield LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0	[2]	0	[3],[4]
Drop-down Acquisition [Member] | Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0		0
Drop-down Acquisition [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			0		(46)	[4]
Drop-down Acquisition [Member] | NRG Yield Operating LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Acquisition of businesses, net of cash acquired			$ (698)		$ (357)	[4]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[3]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[4]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[6]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Condensed Consolidating Fina110

Condensed Consolidating Financial Information PP2 Cash Flows (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Net Cash Provided by Operating Activities		$ 372		$ 310	[1]	$ 120	[1]
Business Combination, Consideration Transferred		37		901	[1]	120
Payments to Acquire Property, Plant, and Equipment		29		33	[1]	353	[1]
Increase (Decrease) in Restricted Cash		1		(49)	[1]	43	[1]
Increase (Decrease) in Notes Receivables		(7)		(8)	[1]	(10)
Proceeds from Renewable Energy Grants		0		(137)	[1]	(25)	[1]
Net investments in unconsolidated affiliates		(360)		7	[1]	(34)	[1]
Net Cash Used in Investing Activities		(1,118)		(1,033)	[1]	(515)	[1]
Proceeds from Payments to Intercompany Loans		0		0		0
Proceeds from Contributions from Parent		0		2	[1]	171	[1]
Proceeds from the issuance of Class C and Class A units		599		630	[1]	468	[1]
Payments of Capital Distribution		38		290	[1]	707	[1]
Payments of Dividends		139		101	[1]	15	[1]
Cash Distribution paid to Parent Company						0
Proceeds from Issuance of Long-term Debt		557		630	[1]	594	[1]
Repayments of Related Party Debt						(2)
Proceeds from (Repayments of) Debt		(948)		(277)	[1]	(72)	[1]
Payments of Financing Costs				28		5
Net Cash Provided by Financing Activities		427		1,093	[1]	432	[1]
Cash and Cash Equivalents, Period Increase (Decrease)		(319)		370	[1]	37	[1]
Cash and Cash Equivalents, at Carrying Value		110		429	[1],[2]	59	[1]	$ 22	[1]
Consolidation, Eliminations [Member]
Cash and Cash Equivalents, at Carrying Value		0	[3]	0	[4],[5]
Guarantor Subsidiaries [Member]
Net Cash Provided by Operating Activities		19		12		26
Business Combination, Consideration Transferred		0		0		0
Payments to Acquire Property, Plant, and Equipment		0		0		0
Increase (Decrease) in Restricted Cash		0		0		0
Increase (Decrease) in Notes Receivables		0		0		0
Proceeds from Renewable Energy Grants				0		0
Net investments in unconsolidated affiliates		(28)		0		0
Net Cash Used in Investing Activities		(28)		0		0
Proceeds from Payments to Intercompany Loans		9		(12)		0
Proceeds from Contributions from Parent				0		0
Proceeds from the issuance of Class C and Class A units		0		0		0
Payments of Capital Distribution		0		0		0
Payments of Dividends		0		0		0
Cash Distribution paid to Parent Company						0
Proceeds from Issuance of Long-term Debt		0		0		0
Repayments of Related Party Debt						0
Proceeds from (Repayments of) Debt		0		0		(26)
Payments of Financing Costs				0		0
Net Cash Provided by Financing Activities		9		(12)		(26)
Cash and Cash Equivalents, Period Increase (Decrease)		0		0		0
Cash and Cash Equivalents, at Carrying Value		0		0		0		0
Non-Guarantor Subsidiaries [Member]
Net Cash Provided by Operating Activities		265		112	[6]	24	[7]
Business Combination, Consideration Transferred		0		0	[6]	0	[7]
Payments to Acquire Property, Plant, and Equipment		29		33	[6]	353	[7]
Increase (Decrease) in Restricted Cash		1		(49)	[6]	43	[7]
Increase (Decrease) in Notes Receivables		(7)		(6)	[6]	(8)	[7]
Proceeds from Renewable Energy Grants				(137)	[6]	(25)	[7]
Net investments in unconsolidated affiliates		0		0	[6]	0	[7]
Net Cash Used in Investing Activities		(23)		216	[6]	(363)	[7]
Proceeds from Payments to Intercompany Loans		0		0	[6]	0	[7]
Proceeds from Contributions from Parent				2	[6]	171	[7]
Proceeds from the issuance of Class C and Class A units		0		0	[6]	0	[7]
Payments of Capital Distribution		38		290	[6]	312	[7]
Payments of Dividends		0		0	[6]	0	[7]
Cash Distribution paid to Parent Company	[7]					(48)
Proceeds from Issuance of Long-term Debt		5		130	[6]	594	[7]
Repayments of Related Party Debt	[7]					(2)
Proceeds from (Repayments of) Debt		(209)		(277)	[6]	(46)	[7]
Payments of Financing Costs				18	[6]	4	[7]
Net Cash Provided by Financing Activities		(248)		(263)	[6]	353	[7]
Cash and Cash Equivalents, Period Increase (Decrease)		(6)		65	[6]	14	[7]
Cash and Cash Equivalents, at Carrying Value		95		101	[5],[6]	36	[6],[7]	22	[7]
NRG Yield Operating LLC [Member]
Net Cash Provided by Operating Activities		88		86	[6]	13	[7]
Business Combination, Consideration Transferred		37		901	[6]	120	[7]
Payments to Acquire Property, Plant, and Equipment		0		0	[6]	0	[7]
Increase (Decrease) in Restricted Cash		0		0	[6]	0	[7]
Increase (Decrease) in Notes Receivables		0		(2)	[6]	(2)	[7]
Proceeds from Renewable Energy Grants				0	[6]	0	[7]
Net investments in unconsolidated affiliates		(332)		7	[6]	(34)	[7]
Net Cash Used in Investing Activities		(603)		(619)	[6]	(152)	[7]
Proceeds from Payments to Intercompany Loans		300		(314)	[6]	112	[7]
Proceeds from Contributions from Parent				0	[6]	0	[7]
Proceeds from the issuance of Class C and Class A units		0		0	[6]	0	[7]
Payments of Capital Distribution		0		0	[6]	0	[7]
Payments of Dividends		0		0	[6]	0	[7]
Cash Distribution paid to Parent Company	[7]					48
Proceeds from Issuance of Long-term Debt		552		500	[6]	0	[7]
Repayments of Related Party Debt	[7]					0
Proceeds from (Repayments of) Debt		(739)		0	[6]	0	[7]
Payments of Financing Costs				10	[6]	1	[7]
Net Cash Provided by Financing Activities		515		513	[6]	159	[7]
Cash and Cash Equivalents, Period Increase (Decrease)		0		(20)	[6]	20	[7]
Cash and Cash Equivalents, at Carrying Value		0		0	[5],[6]	20	[6],[7]	0	[7]
NRG Yield LLC [Member]
Net Cash Provided by Operating Activities		0	[8]	100	[6],[9]	57	[7],[10]
Business Combination, Consideration Transferred		0	[8]	0	[6],[9]	0	[7],[10]
Payments to Acquire Property, Plant, and Equipment		0	[8]	0	[6],[9]	0	[7],[10]
Increase (Decrease) in Restricted Cash		0	[8]	0	[6],[9]	0	[7],[10]
Increase (Decrease) in Notes Receivables		0	[8]	0	[6],[9]	0	[7],[10]
Proceeds from Renewable Energy Grants				0	[6],[9]	0	[7],[10]
Net investments in unconsolidated affiliates		0	[8]	0	[6],[9]	0	[7],[10]
Net Cash Used in Investing Activities		(464)	[8]	(630)	[6],[9]	0	[7],[10]
Proceeds from Payments to Intercompany Loans		(309)	[8]	326	[6],[9]	(112)	[7],[10]
Proceeds from Contributions from Parent				0	[6],[9]	0	[7],[10]
Proceeds from the issuance of Class C and Class A units		599	[8]	630	[6],[9]	468	[7],[10]
Payments of Capital Distribution		0	[8]	0	[6],[9]	395	[7],[10]
Payments of Dividends		139	[8]	101	[6],[9]	15	[7],[10]
Cash Distribution paid to Parent Company	[7],[10]					0
Proceeds from Issuance of Long-term Debt		0	[8]	0	[6],[9]	0	[7],[10]
Repayments of Related Party Debt	[7],[10]					0
Proceeds from (Repayments of) Debt		0	[8]	0	[6],[9]	0	[7],[10]
Payments of Financing Costs				0	[6],[9]	0	[7],[10]
Net Cash Provided by Financing Activities		151	[8]	855	[6],[9]	(54)	[7],[10]
Cash and Cash Equivalents, Period Increase (Decrease)		(313)	[8]	325	[6],[9]	3	[7],[10]
Cash and Cash Equivalents, at Carrying Value		$ 15	[8],[11]	$ 328	[5],[6],[8],[9],[12]	$ 3	[6],[7],[9],[10]	$ 0	[7],[10]
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[2]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[3]	(b) All significant intercompany transactions have been eliminated in consolidation.
[4]	(b) All significant intercompany transactions have been eliminated in consolidation.
[5]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[7]	(b) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[9]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[12]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

Condensed Consolidating Fina111

Condensed Consolidating Financial Information PP2 Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended															12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014	[2]	Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21	$ 36		$ 44		$ (23)		$ (6)		$ 48		$ 39		$ 27		$ 78		$ 108	[3],[4],[5]	$ 134	[3],[4],[5],[6]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																(18)		(66)	[4]	47	[4]
Other comprehensive (loss) income																(18)		(66)	[4]	47	[4]
Comprehensive Income																60		42	[4]	181	[4]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																(52)		1		(2)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																112		41	[4]	183	[4]
Guarantor Subsidiaries [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																(41)		(18)		3
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																0		0		3
Other comprehensive (loss) income																0		0		3
Comprehensive Income																(41)		(18)		6
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																0		0		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																(41)		(18)		6
Non-Guarantor Subsidiaries [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																98		113	[7],[8]	116	[9]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																(19)		(65)	[8]	56	[10]
Other comprehensive (loss) income																(19)		(65)	[8]	56	[10]
Comprehensive Income																79		48	[8]	172	[10]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																0		0	[8]	0	[10]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																79		48	[8]	172	[10]
NRG Yield Operating LLC [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																80		107	[7],[8]	131	[9]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																(18)		(66)	[8]	47	[10]
Other comprehensive (loss) income																(18)		(66)	[8]	47	[10]
Comprehensive Income																62		41	[8]	178	[10]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																(52)		1	[8]	(2)	[10]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																114		40	[8]	180	[10]
Consolidation, Eliminations [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																(188)	[11]	(199)	[7],[8],[12],[13]	(252)	[10],[14]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																36	[15]	129	[8],[13]	(106)	[10],[14]
Other comprehensive (loss) income																36	[15]	129	[8],[13]	(106)	[10],[14]
Comprehensive Income																(152)	[15]	(70)	[8],[13]	(358)	[10],[14]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																0	[15]	0	[8],[13]	0	[10],[14]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																(152)	[15]	(70)	[8],[13]	(358)	[10],[14]
NRG Yield LLC [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest																129	[16]	105	[7],[8],[17],[18]	136	[10],[19]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax																(17)	[16]	(64)	[8],[18]	47	[10],[19]
Other comprehensive (loss) income																(17)	[16]	(64)	[8],[18]	47	[10],[19]
Comprehensive Income																112	[16]	41	[8],[18]	183	[10],[19]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest																0	[16]	0	[8],[18]	0	[10],[19]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																$ 112	[16]	$ 41	[8],[18]	$ 183	[10],[19]
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[7]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[8]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[11]	(b) All significant intercompany transactions have been eliminated in consolidation.
[12]	(b) All significant intercompany transactions have been eliminated in consolidation.
[13]	(b) All significant intercompany transactions have been eliminated in consolidation.
[14]	(b) All significant intercompany transactions have been eliminated in consolidation.
[15]	(b) All significant intercompany transactions have been eliminated in consolidation.
[16]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[17]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[18]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[19]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.

Condensed Consolidating Fina112

Condensed Consolidating Financial Information PP2 Income Statement (Details) - USD ($) $ in Millions		3 Months Ended															12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014	[2]	Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Revenues		$ 209	$ 225		$ 235		$ 200		$ 212		$ 199		$ 194		$ 141		$ 869		$ 746	[3]	$ 387	[3]
Cost of operations																	312		266	[3]	148	[3]
Depreciation, Depletion and Amortization																	265		202	[3],[4]	74	[3],[4]
General and Administrative Expense																	10		8	[3]	7	[3]
Total operating costs and expenses																	590		480	[3]	229	[3]
Operating Income (Loss)		67	81		85		46		70		85		60		51		279		266	[3]	158	[3]
Equity in earnings (losses) of consolidated affiliates																	0		0		0
Income (Loss) from Equity Method Investments																	35		25	[3]	22	[3]
Other Nonoperating Income (Expense)																	2		3	[3]	3	[3]
Interest expense																	(229)		(186)	[3]	(52)	[3]
Nonoperating Income (Expense)																	(201)		(158)	[3]	(27)	[3]
Income Before Income Taxes																			108	[3]	131
Income Tax Expense (Benefit)																	0		0	[3]	(3)	[3]
Net Income		$ 21	$ 36		$ 44		$ (23)		$ (6)		$ 48		$ 39		$ 27		78		108	[3],[5],[6]	134	[3],[4],[5],[6]
Net Income (Loss) Attributable to Noncontrolling Interest																	(51)		3	[3]	(2)	[3]
Net Income (Loss) Attributable to NRG Yield LLC																	129		105	[3]	136	[3]
NRG Yield LLC [Member]
Revenues																	0	[7]	0	[8],[9]
Cost of operations																	0	[7]	0	[8],[9]	0	[10],[11]
Depreciation, Depletion and Amortization																	0	[7]	0	[8],[9]	0	[10],[11]
General and Administrative Expense																	0	[7]	0	[8],[9]	0	[10],[11]
Total operating costs and expenses																	0	[7]	0	[8],[9]	0	[10],[11]
Operating Income (Loss)																	0	[7]	0	[8],[9]	0	[10],[11]
Equity in earnings (losses) of consolidated affiliates																	129	[7]	104	[8],[9]	133	[10],[11]
Income (Loss) from Equity Method Investments																	0	[7]	0	[8],[9]	0	[10],[11]
Other Nonoperating Income (Expense)																	0	[7]	1	[8],[9]	0	[10],[11]
Interest expense																	0	[7]	0	[8],[9]	0	[10],[11]
Nonoperating Income (Expense)																	129	[7]	105	[8],[9]	133	[10],[11]
Income Before Income Taxes	[10],[11]																				133
Income Tax Expense (Benefit)	[10],[11]																				(3)
Net Income																	129	[12]	105	[8],[9],[13],[14]	136	[15],[16]
Net Income (Loss) Attributable to Noncontrolling Interest																	0	[7]	0	[8],[9]	0	[10],[11]
Net Income (Loss) Attributable to NRG Yield LLC																	129	[7]	105	[8],[9]	136	[10],[11]
Guarantor Subsidiaries [Member]
Revenues																	21		24		0	[10],[11]
Cost of operations																	14		16		0
Depreciation, Depletion and Amortization																	4		4		0
General and Administrative Expense																	0		0		0
Total operating costs and expenses																	18		20		0
Operating Income (Loss)																	3		4		0
Equity in earnings (losses) of consolidated affiliates																	(43)		(22)		3
Income (Loss) from Equity Method Investments																	(1)		0		0
Other Nonoperating Income (Expense)																	0		0		0
Interest expense																	0		0		0
Nonoperating Income (Expense)																	(44)		(22)		3
Income Before Income Taxes																					3
Income Tax Expense (Benefit)																					0
Net Income																	(41)		(18)		3
Net Income (Loss) Attributable to Noncontrolling Interest																	0		0		0
Net Income (Loss) Attributable to NRG Yield LLC																	(41)		(18)		3
Non-Guarantor Subsidiaries [Member]
Revenues																	838		722	[9]	387	[11]
Cost of operations																	298		250	[9]	148	[11]
Depreciation, Depletion and Amortization																	261		198	[9]	74	[11]
General and Administrative Expense																	0		0	[9]	0	[11]
Total operating costs and expenses																	559		448	[9]	222	[11]
Operating Income (Loss)																	279		274	[9]	165	[11]
Equity in earnings (losses) of consolidated affiliates																	0		0	[9]	0	[11]
Income (Loss) from Equity Method Investments																	3		(2)	[9]	0	[11]
Other Nonoperating Income (Expense)																	2		2	[9]	3	[11]
Interest expense																	(177)		(161)	[9]	(52)	[11]
Nonoperating Income (Expense)																	(181)		(161)	[9]	(49)	[11]
Income Before Income Taxes	[11]																				116
Income Tax Expense (Benefit)	[11]																				0
Net Income																	98		113	[9],[14]	116	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																	(2)		0	[9]	0	[11]
Net Income (Loss) Attributable to NRG Yield LLC																	100		113	[9]	116	[11]
NRG Yield Operating LLC [Member]
Revenues																	10		0	[9]	0	[11]
Cost of operations																	0		0	[9]	0	[11]
Depreciation, Depletion and Amortization																	0		0	[9]	0	[11]
General and Administrative Expense																	10		8	[9]	7	[11]
Total operating costs and expenses																	13		12	[9]	7	[11]
Operating Income (Loss)																	(3)		(12)	[9]	(7)	[11]
Equity in earnings (losses) of consolidated affiliates																	102		117	[9]	116	[11]
Income (Loss) from Equity Method Investments																	33		27	[9]	22	[11]
Other Nonoperating Income (Expense)																	0		0	[9]	0	[11]
Interest expense																	(52)		(25)	[9]	0	[11]
Nonoperating Income (Expense)																	83		119	[9]	138	[11]
Income Before Income Taxes	[11]																				131
Income Tax Expense (Benefit)	[11]																				0
Net Income																	80		107	[9],[14]	131	[11]
Net Income (Loss) Attributable to Noncontrolling Interest																	(49)		3	[9]	(2)	[11]
Net Income (Loss) Attributable to NRG Yield LLC																	129		104	[9]	133	[11]
Consolidation, Eliminations [Member]
Revenues																	0	[17]	0	[9],[18]	0	[11],[19]
Cost of operations																	0	[17]	0	[9],[18]	0	[11],[19]
Depreciation, Depletion and Amortization																	0	[17]	0	[9],[18]	0	[11],[19]
General and Administrative Expense																	0	[17]	0	[9],[18]	0	[11],[19]
Total operating costs and expenses																	0	[17]	0	[9],[18]	0	[11],[19]
Operating Income (Loss)																	0	[17]	0	[9],[18]	0	[11],[19]
Equity in earnings (losses) of consolidated affiliates																	(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Income (Loss) from Equity Method Investments																	0	[17]	0	[9],[18]	0	[11],[19]
Other Nonoperating Income (Expense)																	0	[17]	0	[9],[18]	0	[11],[19]
Interest expense																	0	[17]	0	[9],[18]	0	[11],[19]
Nonoperating Income (Expense)																	(188)	[17]	(199)	[9],[18]	(252)	[11],[19]
Income Before Income Taxes	[11],[19]																				(252)
Income Tax Expense (Benefit)	[11],[19]																				0
Net Income																	(188)	[17]	(199)	[9],[14],[18],[20]	(252)	[16],[21]
Net Income (Loss) Attributable to Noncontrolling Interest																	0	[17]	0	[9],[18]	0	[11],[19]
Net Income (Loss) Attributable to NRG Yield LLC																	$ (188)	[17]	$ (199)	[9],[18]	$ (252)	[11],[19]
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business
[5]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[6]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[7]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[8]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[9]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[10]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[11]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[12]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[13]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[14]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[15]	(a) Shown separately from the other guarantors in lieu of preparing Schedule I pursuant to the requirements of Rule 5-04(c) of Regulation S-X.
[16]	(c) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[17]	(b) All significant intercompany transactions have been eliminated in consolidation.
[18]	(b) All significant intercompany transactions have been eliminated in consolidation.
[19]	(b) All significant intercompany transactions have been eliminated in consolidation.
[20]	(b) All significant intercompany transactions have been eliminated in consolidation.
[21]	(b) All significant intercompany transactions have been eliminated in consolidation.

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	Jul. 22, 2013	Dec. 31, 2015	Dec. 31, 2014	[1]	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Income Before Income Taxes			$ 108		$ 131
Current Federal Tax Expense (Benefit)					0
Current Income Tax Expense (Benefit)					0
Deferred Federal Income Tax Expense (Benefit)					(3)
Deferred State and Local Income Tax Expense (Benefit)					0
Deferred Income Tax Expense (Benefit)					(3)
Income Tax Expense (Benefit)		$ 0	$ 0		$ (3)	[1]
Effective Income Tax Rate Reconciliation, Percent					(2.10%)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount					$ 46
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	$ (49)
[1]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.

Unaudited Quarterly Financia114

Unaudited Quarterly Financial Data (Details) - USD ($) $ in Millions	3 Months Ended															12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014	[2]	Sep. 30, 2014	[2]	Jun. 30, 2014	[2]	Mar. 31, 2014	[2]	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Revenues	$ 209	$ 225		$ 235		$ 200		$ 212		$ 199		$ 194		$ 141		$ 869	$ 746	[3]	$ 387	[3]
Operating Income (Loss)	67	81		85		46		70		85		60		51		279	266	[3]	158	[3]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21	36		44		(23)		(6)		48		39		27		$ 78	108	[3],[4],[5]	134	[3],[4],[5],[6]
Scenario, Previously Reported [Member]
Revenues		209		217		180		192		184		173		140			689		379
Operating Income (Loss)		87		87		48		69		85		64		54			272		167
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		46		47		(19)		(5)		51		45		30			$ 121		$ 143
Operating Revenues [Member]
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results		16		18		20		20		15		21		1
Operating Income (Loss) [Member]
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results		(6)		(2)		(2)		1		0		(4)		(3)
Net Income (Loss) [Member]
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results		$ (10)		$ (3)		$ (4)		$ (1)		$ (3)		$ (6)		$ (3)
[1]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[2]	(a) The Company's unaudited quarterly financial data was recast for the effect of the November 2015 Drop Down Assets.
[3]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[4]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business.
[5]	(c) Retrospectively adjusted, as discussed in Note 1, Nature of Business.
[6]	(a) Retrospectively adjusted as discussed in Note 1, Nature of Business

Commitments and Contingencie115

Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Long-term Purchase Commitment [Line Items]
Purchase Obligation, Due in Next Twelve Months	$ 12
Utilities Operating Expense, Purchased Power under Long-term Contracts	40	$ 55	$ 40
Unrecorded Unconditional Purchase Obligation, Due within Two Years	6
Unrecorded Unconditional Purchase Obligation, Due within Three Years	3
Unrecorded Unconditional Purchase Obligation, Due within Four Years	3
Unrecorded Unconditional Purchase Obligation, Due within Five Years	3
Unrecorded Unconditional Purchase Obligation, Due after Five Years	21
Purchase Obligation	48
Operating Leases, Future Minimum Payments Due, Next Twelve Months	12
Operating Leases, Rent Expense	9	8	2
Operating Leases, Future Minimum Payments, Due in Two Years	9
Operating Leases, Future Minimum Payments, Due in Three Years	9
Operating Leases, Future Minimum Payments, Due in Four Years	9
Operating Leases, Future Minimum Payments, Due in Five Years	8
Operating Leases, Future Minimum Payments, Due Thereafter	135
Operating Leases, Future Minimum Payments Due	182
NRG [Member]
Long-term Purchase Commitment [Line Items]
Utilities Operating Expense, Purchased Power under Long-term Contracts	$ 13	$ 12	$ 7

Uncategorized Items - nrg-20151

Label	Element	Value
AOCI Attributable to Parent [Member] | Non-cash [Member]
Proceeds from Contributions from Affiliates	us-gaap_ProceedsFromContributionsFromAffiliates	$ 0
Noncontrolling Interest [Member] | Non-cash [Member]
Proceeds from Contributions from Affiliates	us-gaap_ProceedsFromContributionsFromAffiliates	60,000,000
Other Additional Capital [Member] | Non-cash [Member]
Proceeds from Contributions from Affiliates	us-gaap_ProceedsFromContributionsFromAffiliates	224,000,000
Retained Earnings [Member] | Non-cash [Member]
Proceeds from Contributions from Affiliates	us-gaap_ProceedsFromContributionsFromAffiliates	$ (44,000,000)