Clearway Energy (CWEN.A) 10-K 25 Feb 22 2021 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
Class of Stock [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	333-203369
Entity Registrant Name	Clearway Energy LLC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	32-0407370
Entity Address, Address Line One	300 Carnegie Center, Suite 300
Entity Address, City or Town	Princeton
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	08540
City Area Code	609
Local Phone Number	608-1525
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Entity Public Float			$ 0
Documents Incorporated by Reference	Documents Incorporated by Reference: None.
Entity Central Index Key	0001637757
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Common Class A
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		34,599,645
Common Class B
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		42,738,750
Common Class C
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		81,764,907
Common Class D
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		42,633,750

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Philadelphia, Pennsylvania

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Revenues
Total operating revenues	$ 1,286	$ 1,199	$ 1,032
Operating Costs and Expenses
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below	451	366	337
Depreciation, amortization and accretion	509	428	401
Impairment losses	6	24	33
General and administrative	38	33	27
Transaction and integration costs	7	9	3
Development costs	6	5	5
Total operating costs and expenses	1,017	865	806
Operating Income	269	334	226
Other Income (Expense)
Equity in earnings of unconsolidated affiliates	32	7	83
Impairment loss on investment	0	(8)	0
Gain on sale of unconsolidated affiliate	0	49	0
Other income, net	3	4	9
Loss on debt extinguishment	(53)	(24)	(16)
Interest expense	(312)	(414)	(403)
Total other expense, net	(330)	(386)	(327)
Loss Before Income Taxes	(61)	(52)	(101)
Income tax expense	2	0	0
Net Loss	(63)	(52)	(101)
Less: Net loss attributable to noncontrolling interests	(173)	(113)	(71)
Net Income (Loss) Attributable to Clearway Energy LLC	$ 110	$ 61	$ (30)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (63)	$ (52)	$ (101)
Other Comprehensive Income
Unrealized gain on derivatives	22	2	8
Other comprehensive income	22	2	8
Comprehensive Loss	(41)	(50)	(93)
Less: Comprehensive loss attributable to noncontrolling interests	(171)	(115)	(70)
Comprehensive Income (Loss) Attributable to Clearway Energy LLC	$ 130	$ 65	$ (23)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 179	$ 268
Restricted cash	475	197
Accounts receivable — trade	144	143
Inventory	37	42
Current assets held-for-sale	631	0
Prepayments and other current assets	65	58
Current assets	1,531	708
Property, plant and equipment, net	7,650	7,217
Other Assets
Equity investments in affiliates	381	741
Intangible assets for power purchase agreements, net	2,419	1,230
Other intangible assets, net	80	140
Derivative instruments	6	1
Right-of-use assets, net	550	337
Other non-current assets	101	114
Total other assets	3,537	2,563
Total Assets	12,718	10,488
Current Liabilities
Current portion of long-term debt — external	772	384
Current portion of long-term debt — affiliate	1	1
Accounts payable — trade	74	72
Accounts payable — affiliates	110	20
Derivative instruments	46	38
Accrued interest expense	54	44
Current liabilities held-for-sale	494	0
Accrued expenses and other current liabilities	84	79
Total current liabilities	1,635	638
Other Liabilities
Long-term debt — external	6,939	6,585
Deferred income taxes	2	0
Derivative instruments	196	135
Long-term lease liabilities	561	345
Other non-current liabilities	168	173
Total other liabilities	7,866	7,238
Total Liabilities	9,501	7,876
Commitments and Contingencies	0	0
Members' Equity
Contributed capital	1,495	1,723
Retained earnings (accumulated deficit)	43	(50)
Accumulated other comprehensive loss	(13)	(33)
Noncontrolling interest	1,692	972
Total Members' Equity	3,217	2,612
Total Liabilities and Members’ Equity	$ 12,718	$ 10,488

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net loss	$ (63)	$ (52)	$ (101)
Adjustments to reconcile net loss to net cash provided by operating activities:
Equity in earnings of unconsolidated affiliates	(32)	(7)	(83)
Distributions from unconsolidated affiliates	38	61	34
Depreciation, amortization and accretion	509	428	401
Amortization of financing costs and debt discounts	14	15	15
Amortization of intangibles and out-of-market contracts	146	90	71
Loss on debt extinguishment	53	24	16
Reduction in carrying amount of right-of-use assets	11	4	7
Gain on sale of unconsolidated affiliate	0	(49)	0
Impairment losses	6	32	33
Change in deferred income taxes	2	0	0
Changes in derivative instruments	28	44	85
Loss on disposal of asset components	0	3	9
Changes in prepaid and accrued liabilities for tolling agreements	5	(1)	1
Changes in other working capital	(16)	(47)	(19)
Net Cash Provided by Operating Activities	701	545	469
Cash Flows from Investing Activities
Acquisitions, net of cash acquired	(533)	0	(100)
Partnership interest acquisition	0	0	(29)
Acquisition of Drop Down Assets, net of cash acquired	(229)	(122)	(161)
Capital expenditures	(151)	(124)	(228)
Asset purchase from affiliate	(21)	0	0
Buyout of Wind TE Holdco non-controlling interest	0	0	(19)
Return of investment from unconsolidated affiliates	47	79	56
Investments in unconsolidated affiliates	0	(11)	(13)
Proceeds from sale of assets	0	90	20
Consolidation of DGPV Holdco 3 LLC	0	17	0
Other	22	9	6
Net Cash Used in Investing Activities	(865)	(62)	(468)
Cash Flows from Financing Activities
Contributions from noncontrolling interests, net of distributions	680	247	174
Contributions from CEG, net of distributions	287	0	0
Buyout of Repowering Partnership II LLC noncontrolling interest	0	(70)	0
Proceeds from the issuance of class C units	0	62	100
Payments of distributions	(268)	(211)	(155)
Proceeds from the revolving credit facility	622	265	152
Payments for the revolving credit facility	(377)	(265)	(152)
Proceeds from issuance of long-term debt — external	1,728	1,084	1,215
Proceeds from issuance of long-term debt — affiliate	2	3	0
Payments of debt issuance costs	(20)	(20)	(25)
Payments for long-term debt — external	(2,292)	(1,482)	(1,264)
Payments for long-term debt — affiliate	(2)	(45)	(215)
Other	7	0	0
Net Cash Provided by (Used in) Financing Activities	367	(432)	(170)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	189	51	(169)
Reclassification of Cash to Assets Held-for-Sale	(14)	0	0
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	465	414	583
Cash, Cash Equivalents and Restricted Cash at End of Period	654	465	414
Supplemental Disclosures
Interest paid, net of amount capitalized	(337)	(325)	(307)
Non-cash investing and financing activities:
Reductions to fixed assets for accrued capital expenditures	$ (32)	(18)	(2)
Non-cash contributions from CEG, net of distributions		$ 7	$ 35

Consolidated Statements of Memb

Consolidated Statements of Members' Equity - USD ($) $ in Millions	Total	Wind TE Holdco	Carlsbad	DGPV	Mesquite Star	Langford	Raymond Central	Repowering Partnership II LLC	Rattlesnake Dropdown	Mesquite Sky	Black Rock Drop Down	Aqua Acquisition	Cumulative Effect, Period of Adoption, Adjustment	CEG	Clearway Energy, Inc.	Tax Equity Investors	Contributed Capital	Contributed CapitalWind TE Holdco	Contributed CapitalCarlsbad	Contributed CapitalDGPV	Contributed CapitalMesquite Star	Contributed CapitalLangford	Contributed CapitalRaymond Central	Contributed CapitalRepowering Partnership II LLC	Contributed CapitalRattlesnake Dropdown	Contributed CapitalMesquite Sky	Contributed CapitalBlack Rock Drop Down	Contributed CapitalCEG	Contributed CapitalClearway Energy, Inc.	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit)Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings (Accumulated Deficit)CEG	Retained Earnings (Accumulated Deficit)Clearway Energy, Inc.	Accumulated Other Comprehensive Loss	Noncontrolling Interest	Noncontrolling InterestWind TE Holdco	Noncontrolling InterestDGPV	Noncontrolling InterestMesquite Star	Noncontrolling InterestRaymond Central	Noncontrolling InterestRepowering Partnership II LLC	Noncontrolling InterestMesquite Sky	Noncontrolling InterestBlack Rock Drop Down	Noncontrolling InterestAqua Acquisition	Noncontrolling InterestCEG	Noncontrolling InterestTax Equity Investors
Balance, beginning of period at Dec. 31, 2018	$ 2,182												$ (3)				$ 1,940													$ 86	$ (3)			$ (44)	$ 200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(101)																													(30)					(71)
Unrealized gain on derivatives	7																																	7
Payment for interests		$ (19)	$ (35)															$ (9)	$ (35)																	$ (10)
Contributions from CEG, net of distributions, non-cash	35																7													4					24
Distributions paid														$ (68)														$ (38)				$ (30)
Distributions paid to Clearway Energy, Inc., cash	(87)																(65)													(22)
Distributions paid to Clearway Energy, Inc., non-cash	(13)																(13)
Contributions to tax equity non-controlling interests, net of distributions, cash	243																(5)																		248
Distributions to CEG, net of contributions, cash														(68)																														$ (68)
Proceeds from the issuance of Class C Common Stock/Net proceeds from the sales of units, Clearway Energy, Inc	100																100
Balance, end of period at Dec. 31, 2019	2,173																1,882													5				(37)	323
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(52)																													61					(113)
Unrealized gain on derivatives	2																																	4	(2)
Payment for interests				$ (20)	$ 361	$ (44)	$ 55	$ (70)												$ (33)	$ 15	$ (44)	$ 3	$ (60)													$ 13	$ 346	$ 52	$ (10)
Contributions from CEG, net of distributions, non-cash														7														8																(1)
Contributions from CEG, net of distributions, cash														6		$ 361																												6	$ 361
Distributions paid														(90)	$ (121)													(36)	$ (59)			(54)	$ (62)
Distributions to noncontrolling interests, non-cash																(3)																													(3)
Lighthouse Partnership Yield Protection Agreement	(15)																(15)
Proceeds from the issuance of Class C Common Stock/Net proceeds from the sales of units, Clearway Energy, Inc	62																62
Balance, end of period at Dec. 31, 2020	2,612																1,723													(50)				(33)	972
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(63)
Net income (loss)	(66)																																		(176)
Unrealized gain on derivatives	22																																	20	2
Payment for interests									$ (117)	$ (120)	$ (137)														$ (117)	$ (42)	$ (122)														$ (78)	$ (15)
Contributions from CEG, net of distributions, non-cash	31																											2																$ 29
Contributions from CEG, net of distributions, cash	296															$ 676	287																		9										$ 676
Distributions paid														$ (113)	$ (155)													$ (96)	$ (155)			$ (17)	$ 0
Lighthouse Partnership Yield Protection Agreement	15																15
Agua Acquisition												$ 273																															$ 273
Balance, end of period at Dec. 31, 2021	$ 3,217																$ 1,495													$ 43				$ (13)	$ 1,692

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company’s segment structure reflects how management currently operates and allocates resources. The Company's businesses are segregated based on conventional power generation, renewable businesses, which consist of solar and wind, and the Thermal Business, which is held for sale as of December 31, 2021. The Corporate segment reflects the Company's corporate costs and includes eliminating entries. 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, 2021, 2020 and 2019: 2021 2020 2019 Customer Conventional Renewables Conventional Renewables Conventional Renewables SCE 17% 16% 18% 16% 21% 19% PG&E 10% 13% 10% 8% 12% 10% Year ended December 31, 2021 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 441 $ 641 $ 204 $ — $ 1,286 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 90 229 134 (2) 451 Depreciation, amortization and accretion 132 354 23 — 509 Impairment losses — 6 — — 6 General and administrative — — 4 34 38 Transaction and integration costs — — — 7 7 Development costs — — 4 2 6 Operating income (loss) 219 52 39 (41) 269 Equity in earnings of unconsolidated affiliates 6 26 — — 32 Other income, net — 2 1 — 3 Loss on debt extinguishment — (1) — (52) (53) Interest expense, net (53) (142) (18) (99) (312) Income (loss) before income taxes 172 (63) 22 (192) (61) Income tax expense — 2 — — 2 Net Income (Loss) 172 (65) 22 (192) (63) Net Income (Loss) Attributable to Clearway Energy LLC $ 172 $ 109 $ 22 $ (193) $ 110 Balance Sheet Equity investment in affiliates $ 86 $ 295 $ — $ — $ 381 Capital expenditures (b) 12 77 29 1 119 Total Assets (c) $ 2,442 $ 9,603 $ 631 $ 42 $ 12,718 (a) Includes eliminations (b) Includes accruals (c) Thermal Business assets were reclassified to held for sale during the fourth quarter of 2021. Year ended December 31, 2020 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 437 $ 569 $ 193 $ — $ 1,199 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 90 147 131 (2) 366 Depreciation amortization and accretion 132 264 32 — 428 Impairment losses — 24 — — 24 General and administrative — — 3 30 33 Transaction and integration costs — — — 9 9 Development costs — — 5 — 5 Operating income (loss) 215 134 22 (37) 334 Equity in earnings (losses) of unconsolidated affiliates 8 (1) — — 7 Impairment loss on investment — (8) — — (8) Gain on sale of unconsolidated affiliates — — — 49 49 Other income, net 1 4 — (1) 4 Loss on debt extinguishment — (21) — (3) (24) Interest expense, net (84) (216) (19) (95) (414) Net Income (Loss) 140 (108) 3 (87) (52) Net Income (Loss) Attributable to Clearway Energy LLC $ 140 $ 4 $ 3 $ (86) $ 61 Balance Sheet Equity investments in affiliates $ 90 $ 651 $ — $ — $ 741 Capital expenditures (b) 12 44 50 — 106 Total Assets $ 2,575 $ 7,157 $ 627 $ 129 $ 10,488 (a) Includes eliminations (b) Includes accruals Year ended December 31, 2019 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 346 $ 485 $ 201 $ — $ 1,032 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 60 143 134 — 337 Depreciation amortization and accretion 103 271 27 — 401 Impairment losses — 14 19 — 33 General and administrative — 1 3 23 27 Transaction and integration costs — — — 3 3 Development costs — — 5 — 5 Operating income (loss) 183 56 13 (26) 226 Equity in earnings of unconsolidated affiliates 9 74 — — 83 Other income, net 2 6 — 1 9 Loss on debt extinguishment — (1) — (15) (16) Interest expense, net (59) (239) (18) (87) (403) Net Income (Loss) 135 (104) (5) (127) (101) Net Income (Loss) Attributable to Clearway Energy LLC $ 135 $ (33) $ (5) $ (127) $ (30)

Nature of Business

Nature of Business	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Clearway Energy LLC, together with its consolidated subsidiaries, or the Company, is an energy infrastructure investor in and owner of modern, sustainable and long-term contracted assets across North America. The Company is sponsored by GIP through GIP's portfolio company, CEG. GIP is an independent infrastructure fund manager that makes equity and debt investments in infrastructure assets and businesses. The Company is one of the largest renewable energy owners in the U.S. with over 5,000 net MW of installed wind and solar generation projects. The Company's over 9,000 net MW of assets also includes approximately 2,500 net MW of environmentally-sound, highly efficient natural gas-fired generation facilities as well as the Thermal Business. Through this environmentally-sound, diversified and primarily contracted portfolio, the Company endeavors to increase distributions to its unit holders. Substantially all of the Company's generation assets are under long-term contractual arrangements for the output or capacity from these assets. On October 22, 2021, Clearway Energy Operating LLC entered into a binding agreement to sell the Thermal Business to KKR, or the Thermal Disposition. For further details of the Thermal Disposition, refer to Note 3, Acquisitions and Dispositions . Clearway Energy, Inc., or Clearway, Inc., consolidates the results of the Company through its controlling interest, with CEG's interest shown as non-controlling interest in the consolidated financial statements. The holders of Clearway, Inc.'s outstanding shares of Class A and Class C common stock are entitled to dividends as declared. CEG receives its distributions from the Company through its ownership of the Company's Class B and Class D units. As of December 31, 2021, Clearway, Inc. owned 57.65% of the economic interests of the Company, with CEG owning 42.35% of the economic interests of the Company. For further discussion, see Note 11, Members' Equity. The following table represents the structure of the Company as of December 31, 2021:

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The Company's consolidated financial statements have been prepared in accordance with GAAP. The FASB ASC is the source of authoritative 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 GAAP for SEC registrants. The consolidated 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, Cash Equivalents and Restricted Cash 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 $146 million and $149 million as of December 31, 2021 and 2020, respectively. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows: Year ended December 31, 2021 2020 (In millions) Cash and cash equivalents $ 179 $ 268 Restricted cash 475 197 Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 654 $ 465 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. As of December 31, 2021, these restricted funds comprised of $246 million designated to fund operating expenses, approximately $34 million designated for current debt service payments and $131 million restricted for reserves including debt service, performance obligations and other reserves as well as capital expenditures. The remaining $64 million is held in distributions reserve accounts. In 2020, the members of the partnerships holding the Oahu Solar and Kawailoa Solar projects submitted applications to the state of Hawaii for refundable tax credits based on the cost of construction of the projects. In April 2021, the members of the partnerships contributed their respective portions of the tax credits in the amount of $49 million to the Oahu Solar and Kawailoa project companies, which was recorded to restricted cash on the Company's consolidated balance sheet with an offsetting adjustment to noncontrolling interests. In accordance with the projects' related agreements, the cash is held in a restricted account and utilized to offset invoiced amounts under the projects' PPAs. As of December 31, 2021, $20 million of the $49 million has been utilized to offset invoiced amounts under the projects' PPAs. Accounts Receivable — Trade and Allowance for Credit Losses Accounts receivable — trade are reported on the consolidated balance sheet at the invoiced amount adjusted for any write-offs and the allowance for credit losses. The allowance for credit losses is reviewed periodically based on amounts past due and significance. The allowance for credit losses was immaterial as of December 31, 2021 and 2020. Inventory Inventory consists principally of spare parts and fuel oil. Spare parts inventory is valued at weighted average cost, unless evidence indicates that the weighted average cost will not be recovered with a normal profit in the ordinary course of business. Fuel oil inventory is valued at the lower of weighted average cost or market. The Company removes fuel inventories as they are used in the production of steam, chilled water or electricity. Spare parts inventory is removed when used for repairs, maintenance or capital projects. Property, Plant and Equipment Property, plant and equipment are stated at cost; however impairment adjustments are recorded whenever events or changes in circumstances indicate that their carrying values may not be recoverable. 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. For further discussion of the Company's property, plant and equipment refer to Note 4, Property, Plant and Equipment . Construction in-progress represents cumulative construction costs, including the costs incurred for the purchase of major equipment and engineering costs and capitalized interest. Once the project achieves commercial operation, the Company reclassifies the amounts recorded in construction in progress to facilities and equipment. Development costs include project development costs, which are expensed in the preliminary stages of a project and capitalized when the project is deemed to be commercially viable. Commercial viability is determined by one or a series of actions including, among others, Board of Director approval pursuant to a formal project plan that subjects the Company to significant future obligations that can only be discharged by the use of a Company asset. When a project is available for operations, capitalized interest and capitalized project development costs are reclassified to property, plant and equipment and depreciated on a straight-line basis over the estimated useful life of the project's related assets. Capitalized costs are charged to expense if a project is abandoned or management otherwise determines the costs to be unrecoverable. Asset Impairments Long-lived assets that are held and used are reviewed for impairment whenever events or changes in circumstances indicate their carrying values may not be recoverable. Such reviews are performed in accordance with ASC 360, Property, Plant and Equipment . An impairment loss is indicated if the total future estimated undiscounted cash flows expected from an asset are less than its carrying value. An impairment charge is measured as the excess of an asset's carrying amount over its fair value with the difference recorded in operating costs and expenses in the consolidated statements of operations. Fair values are determined by a variety of valuation methods, including appraisals, sales prices of similar assets and present value techniques. For further discussion of the Company's long-lived asset impairments, refer to Note 9, Asset Impairments . 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 an other-than-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. 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. Debt issuance costs related to the long-term debt are presented as a direct deduction from the carrying amount of the related debt. Debt issuance costs related to the senior secured revolving credit facility line of credit are recorded as a non-current asset on the consolidated balance sheet and are amortized over the term of the credit facility. Intangible Assets Intangible assets represent contractual rights held by the Company. The Company recognizes specifically identifiable intangible assets including power purchase agreements, leasehold rights, customer relationships, customer contracts, emission allowances, RECs and development rights when specific rights and contracts are acquired. These intangible assets are amortized primarily on a straight-line basis. For further discussion of the Company's intangible assets, refer to Note 8, Intangible Assets. Income Taxes The Company is classified as a partnership for federal and state income tax purposes. Therefore, federal and most state income taxes are assessed at the partner level. The franchise tax imposed by the state of Texas, however, is being assessed at the level of certain project subsidiaries of the Company, and therefore reflected as an income tax expense of the Company. For the year ended December 31, 2021, the Company recorded a deferred tax expense and associated deferred tax liability of $2 million with respect to future years. At December 31, 2021, the Company had no current tax liability. Revenue Recognition Revenue from Contracts with Customers The Company applies the guidance in ASC 606, Revenue from Contracts with Customers, or Topic 606, when recognizing revenue associated with its contracts with customers. The Company's policies with respect to its various revenue streams are detailed below. In general, the Company applies the invoicing practical expedient to recognize revenue for the revenue streams detailed below, except in circumstances where the invoiced amount does not represent the value transferred to the customer. Thermal Revenues Steam and chilled water revenue is recognized as the Company transfers the product to the customer, 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. For thermal contracts, the Company’s performance obligation to deliver steam and chilled water is satisfied over time and revenue is recognized based on the invoiced amount. 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 consolidated statements of operations. As contracts for steam and chilled water are long-term contracts, the Company has performance obligations under these contracts that have not yet been satisfied. These performance obligations have transaction prices that are both fixed and variable, and that vary based on the contract duration, customer type, inception date and other contract-specific factors. For the fixed price contracts, the Company cannot accurately estimate the amount of its unsatisfied performance obligations as it will vary based on customer usage, which will depend on factors such as weather and customer activity. On October 22, 2021, Clearway Energy Operating LLC entered into a binding agreement to sell the Thermal Business to KKR. For further details of the Thermal Disposition, refer to Note 3, Acquisitions and Dispositions . Power Purchase Agreements, or PPAs The majority of the Company’s revenues are obtained through PPAs or similar contractual agreements. Energy, capacity and, where applicable, renewable attributes, from the majority of the Company’s renewable energy assets and certain conventional energy plants is sold through long-term PPAs and tolling agreements to a single counterparty, which is often a utility or commercial customer. The majority of these PPAs are accounted for as operating leases as the Company retained its historical lease assessments and classification upon adoption of ASC 842, Leases . ASC 842 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 lease revenue derived from these leases is recorded as contingent rent on an actual basis when the electricity is delivered. The contingent lease revenue recognized in the years ended December 31, 2021, 2020 and 2019 was $741 million, $589 million and $537 million, respectively. See Note 15, Leases for additional information related to the Company's PPAs accounted for as leases. Renewable Energy Credits, or RECs As stated above, renewable energy credits, or RECs, are usually sold through long-term PPAs or through REC contracts with counterparties. Revenue from the sale of self-generated RECs is recognized when the related energy is generated and simultaneously delivered even in cases where there is a certification lag as it has been deemed to be perfunctory. In a bundled contract to sell energy, capacity and/or self-generated RECs, all performance obligations are deemed to be delivered at the same time and hence, timing of recognition of revenue for all performance obligations is the same and occurs over time. In such cases, it is often unnecessary to allocate transaction price to multiple performance obligations. Disaggregated Revenues The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2021, along with the reportable segment for each category: Year ended December 31, 2021 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 9 $ 784 $ 122 $ 915 Capacity revenue (a) 455 2 53 510 Other revenues — 60 32 92 Contract amortization (23) (118) (3) (144) Mark-to-market for economic hedges — (87) — (87) Total operating revenue 441 641 204 1,286 Less: Lease revenue (464) (716) (2) (1,182) Less: Contract amortization 23 118 3 144 Total revenue from contracts with customers $ — $ 43 $ 205 $ 248 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842. The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2020, along with the reportable segment for each category: Year ended December 31, 2020 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 10 $ 609 $ 101 $ 720 Capacity revenue (a) 451 — 63 514 Other revenues — 21 32 53 Contract amortization (24) (61) (3) (88) Total operating revenue 437 569 193 1,199 Less: Lease revenue (461) (554) (2) (1,017) Less: Contract amortization 24 61 3 88 Total revenue from contracts with customers $ — $ 76 $ 194 $ 270 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842. The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2019, along with the reportable segment for each category: Year ended December 31, 2019 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 5 $ 545 $ 120 $ 670 Capacity revenue (a) 348 — 54 402 Other revenues — 10 30 40 Contract amortization (7) (61) (3) (71) Mark-to-market for economic hedges — (9) — (9) Total operating revenue 346 485 201 1,032 Less: Lease revenue (353) (509) (2) (864) Less: Contract amortization 7 61 3 71 Total revenue from contracts with customers $ — $ 37 $ 202 $ 239 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842. Contract Amortization Assets and liabilities recognized from power sales agreements assumed through acquisitions relating to the sale of electric capacity and energy in future periods arising from differences in contract and market prices are amortized to revenue over the term of each underlying contract based on actual generation and/or contracted volumes or on a straight-line basis, where applicable. Contract Balances The following table reflects the net amount of contract assets and liabilities included on the Company’s consolidated balance sheets as of December 31, 2021 and December 31, 2020: (In millions) December 31, 2021 December 31, 2020 Accounts receivable, net - Contracts with customers $ 44 $ 57 Accounts receivable, net - Leases 100 86 Total accounts receivable, net $ 144 $ 143 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 interest rate instruments used to mitigate variability in earnings due to fluctuations in interest rates, power purchase or sale contracts used to mitigate variability in earnings due to fluctuations in market prices and commodity purchase contracts used to control customer reimbursable fuel cost. On an ongoing basis, the Company qualitatively assesses the effectiveness of its 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 cash flows of hedged items. If necessary, the Company will perform an analysis to measure the statistical correlation between the derivative and the associated hedged item to determine the effectiveness of such a contract designated as a hedge. The Company will discontinue hedge accounting if it is determined that the hedge is no longer effective. 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 accumulated 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 — trade and derivative instruments, which are concentrated within entities engaged in the energy and financial industries. 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. See Item 1A, Risk Factors, Risks related to the Company's Business, for a discussion on the Company’s dependence on major customers . See Note 6, Fair Value of Financial Instruments, for a further discussion of derivative concentrations and Note 12, Segment Reporting, for concentration of counterparties. Fair Value of Financial Instruments The carrying amount of cash and cash equivalents, restricted cash, accounts receivable — trade, accounts payable — trade, account payable — affiliate and accrued expenses and other current 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, other than when an ARO is assumed in an acquisition of the related long-lived asset, 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 AROs are primarily related to the future dismantlement of equipment on leased property and environmental obligations related to site closures and fuel storage facilities. The Company records AROs as part of other non-current liabilities on its consolidated balance sheet. The following table represents the balance of ARO obligations as of December 31, 2021 and 2020, along with the additions and accretion related to the Company's ARO obligations for the year ended December 31, 2021: (In millions) Balance as of December 31, 2020 $ 117 Thermal Business AROs reclassified to held for sale (1) Revisions in estimates for current obligations 2 Additions 19 Accretion — expense 9 Balance as of December 31, 2021 $ 146 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 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, the Company 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 various energy projects accounted for by the equity method, several of which are VIEs, where the Company is not a primary beneficiary, 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. Distributions from equity method investments that represent earnings on the Company's investment are included within cash flows from operating activities and distributions from equity method investments that represent a return of the Company's investment are included within cash flows from investing activities. 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 and Asset Acquisitions The Company accounts for its acquisitions in accordance with ASC 805, Business Combinations, or ASC 805. For third- party acquisitions, 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, for business combinations, transaction costs are expensed as incurred. For asset acquisitions, identifiable assets acquired and liabilities assumed are recorded at acquisition date fair value. No goodwill is recognized and excess purchase price or negative goodwill are allocated to the acquired assets on a relative fair value basis. For acquisitions that relate to entities under common control, ASC 805 requires retrospective combination of the entities for all annual periods presented as if the combination has been in effect from the beginning of the earliest financial statement period presented or from the date the entities were under common control (if later than the beginning of the earliest financial statement period). The difference between the cash paid and historical value of the entities' equity is recorded as a distribution/contribution from/to CEG with the offset to noncontrolling interest. Use of Estimates The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions. These estimates and assumptions impact the reported amounts 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 amounts of net earnings during the reporting periods. 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, AROs, acquisition accounting and legal costs incurred in connection with recorded loss contingencies, among others. In addition, estimates are used to test long-lived assets for impairment and to determine the fair value of impaired assets. 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 solar and 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 solar energy systems, under operating leases or PPAs, that are 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 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. In addition, in certain circumstances, the Company and its partners in the tax equity arrangements agree that certain tax benefits are to be utilized outside of the tax equity arrangements, which may result in differences in the amount an investor would hypothetically receive at the initial balance sheet date calculated strictly in accordance with related contractual agreements. These differences are recognized in the consolidated statement of operations using a systematic and rational method over the period during which the investor is expected to achieve its target return. Reclassification Certain prior year amounts have been reclassified for comparative purposes. Recently Adopted Accounting Standards In March 2020, the FASB issued ASU No. 2020-4, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide for optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. These amendments apply only to contracts that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform, which affects certain of the Company's debt and interest rate swap agreements. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. As of December 31, 2021, the Company has applied the amendments to all its eligible contract modifications, where

Acquisitions and Dispositions

Acquisitions and Dispositions	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Acquisitions Black Rock Drop Down — On December 29, 2021, the Company, through its indirect subsidiary Lighthouse Renewable Holding Sub LLC, acquired the Class B membership interests in Black Rock Wind Holding LLC from Clearway Renew LLC, a subsidiary of CEG, for $60 million in cash consideration, $37 million of which was paid on December 29, 2021 with the remaining $23 million paid in February 2022 after all remaining turbines were operational. Lighthouse Renewable Holding Sub LLC is a wholly-owned subsidiary of Lighthouse Renewable Holdco LLC, which is a partnership between the Company and a third-party investor. The third-party investor also contributed cash consideration utilized to acquire their portion of the Class B membership interests. The Class A membership interests in Black Rock Wind Holding LLC were acquired by another third-party investor in 2020. Black Rock Wind Holding LLC, through its wholly-owned subsidiary, Black Rock Class B Holdco LLC, is the primary beneficiary and consolidates its interests in a tax equity fund, Black Rock TE Holdco LLC, that holds the Black Rock wind project, a 115 MW utility scale wind project located in Mineral County and Grant County, West Virginia, which achieved commercial operations in December 2021, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities . As of December 31, 2021, 70 MW of the 115 MW rated capacity were operational, representing fourteen of the twenty-three wind turbines, and the remaining 45 MW rated capacity became operational in January 2022. A majority of the project’s output is backed by contracts with investment-grade counterparties with a 15-year weighted average contract life. The Black Rock operations are reflected in the Company's Renewables segment and the acquisition was funded with existing sources of liquidity. The acquisition was determined to be an asset acquisition and not a business combination, therefore the Company consolidated the financial information for Black Rock on a prospective basis. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid of $60 million and the historical cost of the Company's acquired interests of $19 million was recorded as an adjustment to CEG's contributed capital balance. In addition, the Company reflected additional contributions paid by CEG and the portion of the Company’s purchase price utilized to repay long-term debt, totaling $133 million, as contributions from CEG in the statement of stockholders’ equity, and as an impact of the Black Rock Drop Down in noncontrolling interest. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 29, 2021: (In millions) Black Rock Current assets (a) $ 36 Property, plant and equipment 178 Right-of-use-assets 7 Other non-current assets 2 Total assets acquired 223 Long-term debt (b) 186 Long-term lease liabilities 7 Other current and non-current liabilities 11 Total liabilities assumed (c) 204 Net assets acquired $ 19 (a) Includes $35 million reserved for project completion costs included in restricted cash on the Company's balance sheet at acquisition date, which is included within the $133 million contributed by CEG described above. (b) Repaid at acquisition date utilizing $56 million contributed by the tax equity investor, $36 million from the cash equity investor and $61 million contributed by CEG, all recorded as contributions in noncontrolling interest, as well as $37 million of the Company's acquisition price. Of the $190 million contributed, $186 million was utilized to pay down the acquired debt and $4 million was utilized to pay associated fees. The $61 million contributed by CEG and the Company’s initial acquisition price of $37 million are also included within the $133 million contributed by CEG described above. (c) Total liabilities assumed excludes amounts due to CEG as of December 31, 2021 for the remaining turbines that became operational in January 2022. The liabilities totaled $83 million, of which $59 million was received from the tax equity and cash equity investors and was held in escrow accounts as of December 31, 2021. Mesquite Sky Drop Down — On December 17, 2021, the Company, through its indirect subsidiary Lighthouse Renewable Holdco 2 LLC, acquired the Class B membership interests of Mesquite Sky Holding LLC from Clearway Renew LLC, a subsidiary of CEG, for $61 million in cash consideration. Lighthouse Renewable Holdco 2 LLC is a partnership between the Company and a third-party investor. The third-party investor also contributed cash consideration utilized to acquire their portion of the Class B membership interests. The Class A membership interests of Mesquite Sky Holding LLC were acquired by another third-party investor in 2020. Mesquite Sky Holding LLC, through its wholly-owned subsidiary, Mesquite Sky Class B Holdco LLC, is the primary beneficiary and consolidates its interests in a tax equity fund, Mesquite Sky TE Holdco LLC, that holds the Mesquite Sky wind project, a 340 MW utility scale wind project located in Callahan County, Texas, which achieved commercial operations in December 2021, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities . A majority of the project’s output is backed by contracts with investment-grade counterparties with a 12-year weighted average contract life. The Mesquite Sky operations are reflected in the Company's Renewables segment and the acquisition was funded with existing sources of liquidity. The acquisition was determined to be an asset acquisition and not a business combination, therefore the Company consolidated the financial information for Mesquite Sky on a prospective basis. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The sum of the cash paid of $61 million and the historical cost of the Company's net liabilities assumed of $7 million was recorded as an adjustment to CEG's contributed capital balance. The difference between cash paid, interests acquired, and the balance in equity is capital reserved for project completion. In addition, the Company reflected additional contributions paid by CEG and the portion of the Company’s purchase price utilized to repay long-term debt, totaling $52 million, as contributions from CEG in the statement of stockholders’ equity, and as an impact of the Mesquite Sky drop down in noncontrolling interest. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 17, 2021: (In millions) Mesquite Sky Current assets (a) $ 46 Property, plant and equipment 377 Right-of use assets 45 Other non-current assets 7 Total assets acquired 475 Long-term debt (b) 355 Long-term lease liabilities 45 Derivative liabilities 43 Other current and non-current liabilities 39 Total liabilities assumed (c) 482 Net liabilities assumed $ (7) (a) Includes $44 million reserved for project completion costs included in restricted cash on the Company's balance sheet at acquisition date, which is included within the $52 million contributed by CEG described above. (b) Repaid at acquisition date utilizing $241 million contributed by the tax equity investor and $107 million contributed by the cash equity investor, both recorded as contributions in noncontrolling interest, as well as the Company's $61 million acquisition price. Of the $409 million contributed, $355 million was utilized to pay down the acquired debt and $1 million was utilized to pay associated fees. The remaining $53 million was distributed to CEG for the acquisition. The net of the Company’s $61 million acquisition price and the distribution to CEG of $53 million are included within the $52 million contributed by CEG described above. (c) Total liabilities assumed excludes amounts due to CEG as of December 31, 2021 of $6 million, of which $5 million was received from the tax equity and cash equity investors and was held in escrow accounts as of December 31, 2021. Utah Solar Portfolio Acquisition — On December 1, 2021, the Company acquired the remaining 50% equity interest in the Utah Solar Portfolio from Dominion Solar Projects III, Inc., for approximately $335 million before working capital and purchase price adjustments in the net amount of $5 million, representing total net consideration of $330 million. The Utah Solar Portfolio consists of seven utility-scale solar farms located in Utah, representing 530 MW of capacity. The assets within the portfolio sell power subject to 20-year PPAs with PacifiCorp that have approximately 15 years remaining under the agreements. Following the close of the transaction, the Company owns 100% of the membership interests in the Utah Solar Portfolio and consolidates the Utah Solar Portfolio. The Utah Solar Portfolio operations are included in the Company's Renewables segment. The acquisition was determined to be an asset acquisition and the cash consideration of $330 million, net of restricted cash acquired of $8 million, represented a net cash outflow of $322 million, which was allocated to the fair value of the assets acquired and liabilities assumed on the acquisition date. The acquisition was funded with the borrowings under the Bridge Loan Agreement, as described in Note 10, Long-term Debt. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 1, 2021: (In millions) Utah Solar Portfolio Current assets $ 20 Property, plant and equipment 258 Intangible assets for power purchase agreement 302 Other intangible assets 4 Right-of use assets 163 Total assets acquired 747 Long-term lease liabilities 163 Other current and non-current liabilities 24 Total liabilities assumed 187 Equity method investment removed (230) Net assets acquired $ 330 Mt. Storm Wind Acquisition — On April 23, 2021, the Company acquired 100% of the equity interests in NedPower Mount Storm LLC, or Mt. Storm, from Castleton Commodities International for approximately $96 million before working capital and purchase price adjustments in the net amount of $4 million, representing a total net consideration of $100 million. Mt. Storm is a 264 MW wind project located in Grant County, West Virginia. Mt. Storm has a 10-year energy hedge with an investment-grade counterparty. The acquisition was determined to be an asset acquisition and the purchase price was allocated to the fair value of the assets acquired and liabilities assumed on the acquisition date as follows: (In millions) Mt. Storm Current assets $ 3 Property, plant and equipment 108 Other non-current assets 2 Total assets acquired 113 Derivative instruments 9 Other current and non-current liabilities 4 Total liabilities assumed 13 Net assets acquired $ 100 Agua Caliente Acquisition — On February 3, 2021, the Company acquired an additional 35% equity interest in the Agua Caliente solar project from NRG Energy, Inc. for $202 million. Agua Caliente is a 290 MW solar project located in Dateland, Arizona in which Clearway previously owned a 16% equity interest. The project has a 25-year PPA with PG&E, with approximately 17 years remaining under the agreement. Following the close of the transaction, the Company owns a 51% equity interest in Agua Caliente. The Agua Caliente operations are included in the Company's Renewables segment. The acquisition was determined to be an asset acquisition and the cash consideration of $202 million, net of restricted cash acquired of $91 million, represented a net cash outflow of $111 million, which was allocated to the fair value of the assets acquired and liabilities assumed on the acquisition date. A third-party investor holds the remaining 49% equity interest in Agua Caliente, which is reflected in noncontrolling interest at fair value at the acquisition date. The following is a summary of assets and liabilities obtained in connection with the acquisition as of February 3, 2021: (In millions) Agua Caliente Restricted cash $ 91 Property, plant and equipment 154 Intangible asset for power purchase agreement 1,022 Other current assets 9 Total assets acquired 1,276 Long-term debt 716 Other current and non-current liabilities 5 Total liabilities assumed 721 Noncontrolling interest 273 Equity method investment removed (80) Net assets acquired less noncontrolling interest $ 202 Rattlesnake Drop Down — On January 12, 2021, the Company acquired CEG's equity interest and a third-party investor's minority interest in CWSP Rattlesnake Holding, LLC for $132 million in cash consideration. CWSP Rattlesnake Holding LLC indirectly consolidates the Rattlesnake wind project, a 160 MW wind facility with 144 MW of deliverable capacity in Adams County, Washington, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities. The project has a 20-year PPA with Avista Corporation, which began when the facility reached commercial operations in December 2020. The Rattlesnake operations are included in the Company's Renewables segment. The acquisition was determined to be an asset acquisition and not a business combination, therefore, the Company consolidated the financial information for Rattlesnake on a prospective basis. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid of $132 million and the historical cost of the Company's acquired interests of $14 million was recorded as an adjustment to CEG's contributed capital balance. The following is a summary of assets and liabilities transferred in connection with the acquisition as of January 12, 2021: (In millions) Rattlesnake Current assets $ 8 Property, plant and equipment 200 Right-of-use assets 12 Total assets acquired 220 Long-term debt (a) 176 Long-term lease liabilities 12 Other current and non-current liabilities 18 Total liabilities assumed 206 Net assets acquired $ 14 (a) Repaid at acquisition date utilizing $107 million contributed by tax equity investor and $103 million contributed by CEG, both recorded as contributions in noncontrolling interest. Of the $210 million contributed, $176 million was utilized to pay down the acquired debt, $29 million was utilized to fund project reserve accounts and $5 million was utilized to pay associated fees. Langford Drop Down — On November 20, 2020, the Company acquired 100% of the Class B membership interest in Langford Holding LLC from CEG for $55 million as well as a minority interest from a third-party investor for $9 million. Langford Holding LLC indirectly consolidates its interest in the Langford wind project as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities. The Langford project is a 160 MW wind project located in West Texas which achieved repowering commercial operations in November 2020. The Langford operations are included in the Company's Renewables segment and the acquisition was funded with cash on hand. The acquisition was determined to be an asset acquisition and not a business combination, therefore the Company consolidated the financial information for Langford on a prospective basis. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid of $64 million and the historical value of the Company's acquired interests of $21 million was recorded as an adjustment to noncontrolling interest. The following is a summary of assets and liabilities transferred in connection with the acquisition as of November 20, 2020: (In millions) Langford Current assets $ 4 Property, plant and equipment 138 Other non-current assets 15 Total assets acquired 157 Other current and non-current liabilities 17 Total liabilities assumed 17 Noncontrolling interests 119 Net assets acquired less noncontrolling interests $ 21 Rosamond Central Drop Down — On December 21, 2020, Rosamond Solar Investment LLC, a subsidiary of the Company, acquired 100% of the Class A membership interests of Rosie TargetCo LLC from Renew Development HoldCo LLC, a subsidiary of CEG, for $23 million in cash consideration and an additional $1 million adjustment concurrent with the tax equity investor's final funding which was paid in January 2021. Rosie Target Co LLC is the primary beneficiary and consolidates its interest in a tax equity fund that owns the 192 MW Rosamond Central solar project, located in Kern County, California as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities . The Rosamond Central operations are included in the Company's Renewables segment. The acquisition was determined to be an asset acquisition and not a business combination, and therefore, the Company consolidated the financial information for Rosamond Central on a prospective basis. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid of $24 million and the historical value of the Company's acquired interests of $28 million was recorded as an adjustment to noncontrolling interest. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 21, 2020: (In millions) Rosamond Central Current assets $ 49 Property, plant and equipment 246 Other non-current assets 1 Total assets acquired 296 Long-term debt 205 Other current and non-current liabilities 11 Total liabilities assumed 216 Noncontrolling interests 52 Net assets acquired less noncontrolling interests $ 28 Mesquite Star Drop Down — On September 1, 2020, the Company, through its indirect subsidiary Lighthouse Renewable Class A LLC, acquired the Class A membership interests in Lighthouse Renewable Holdco LLC (formerly Mesquite Star Pledgor LLC) from Clearway Renew LLC, a subsidiary of CEG, for $74 million in cash consideration inclusive of a purchase price adjustment received in the fourth quarter of 2020 concurrent with the partnership amendment referenced below. Lighthouse Renewable Holdco LLC indirectly owns 100% of the Class B membership interests in Mesquite Star Tax Equity Holdco LLC, a tax equity partnership that it consolidates as the primary beneficiary, and owns the Mesquite Star wind project, a 419 MW utility scale wind project located in Fisher County, Texas. A majority of the project's output is backed by contracts with investment-grade counterparties with a 12 year weighted average contract life. The Mesquite Star operations are reflected in the Company's Renewables segment and the acquisition was funded with cash on hand. The Company initially recorded its interest in Lighthouse Renewable Class A LLC as an equity method investment. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the $74 million cash paid and the historical value of the Company's acquired interests of $83 million was recorded as an adjustment to noncontrolling interest. On December 21, 2020, Clearway Renew LLC sold the Class B membership interest in Lighthouse Renewable Holdco LLC to a third-party investor as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities. The investor and the Company amended the terms of the related partnership and as a result, the Company now consolidates its interest in the Mesquite Star wind project, through its consolidation of Lighthouse Renewable Holdco LLC. The membership interests acquired by the Company relate to interests under common control by GIP and were recorded at historical cost. The difference between the carrying value of the Company's equity method investment of $58 million and the historical value of the net assets consolidated for Mesquite Star of $63 million was recorded as an adjustment to noncontrolling interest. The following table shows the balances that were consolidated effective on December 21, 2020: (In millions) Mesquite Star Current assets $ 22 Property, plant and equipment 443 Other non-current assets 31 Total assets acquired 496 Other current and non-current liabilities 87 Total liabilities assumed 87 Noncontrolling interests and redeemable noncontrolling interests 346 Net assets acquired less noncontrolling interests $ 63 DG Residual Interest and SREC Contract Drop Down — On November 2, 2020, the Company acquired the Class B membership interests in DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3, or DGPV Holdco Entities, from Renew DG Holdings LLC, a subsidiary of CEG, for approximately $20 million in cash consideration and an SREC contract for approximately $24 million in cash consideration. The Company previously held the Class A membership interests in the DGPV Holdco Entities and accounted for its interests in DGPV Holdco 1 and DGPV Holdco 2 as equity method investments, while DGPV Holdco 3 was consolidated by the Company effective May 29, 2020 as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities . Subsequent to the acquisition of the remaining interests in the DGPV Holdco Entities, the Company transferred its interests to DG-CS Master Borrower LLC, and issued debt that was utilized to repay existing project-level debt outstanding and unwind interest rate swaps for certain of the tax equity arrangements related to the underlying project funds, as further described in Note 10, Long-term Debt . The acquired SREC contract is a contract to receive incremental cash flows related to renewable energy credits from certain underlying solar projects. The assets and liabilities transferred to the Company relate to interests under common control by GIP and were recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid for the residual interest of the DGPV Holdco Entities and the historical value of the net assets consolidated less the carrying value of the equity method investments was recorded as an adjustment to noncontrolling interest. The following table shows the balances that were consolidated: November 2, 2020 May 29, 2020 (In millions) DGPV Holdco 1 and 2 (a) DGPV Holdco 3 (b) Current assets $ 29 $ 32 Property, plant and equipment, net 324 331 Intangible assets, net 19 1 Other non-current assets 52 37 Total assets acquired 424 401 Long-term debt 160 206 Other current and non-current liabilities 54 84 Total liabilities assumed 214 290 Noncontrolling interests and redeemable noncontrolling interests 5 6 Net assets acquired less noncontrolling interests $ 205 $ 105 (a) Includes DGPV 1, LLC, DGPV 2, LLC, CA Fund, LLC, DGPV 4 Borrower LLC and Puma Class B LLC (b) Includes Renew Solar CS4 Fund LLC and Chestnut Fund LLC The fair value of property, plant and equipment determined at GIP's acquisition date was determined primarily based on an income method using discounted cash flows and validated using a cost approach based on the replacement cost of the assets less economic depreciation. This methodology was utilized as the forecasted cash flows incorporate specific attributes of each asset including age, useful life, equipment condition and technology. The fair value of intangible assets was determined utilizing a variation of the income approach determined by discounting incremental cash flows associated with the contracts to present value. Primary assumptions utilized included estimates of generation, contractual prices, operating expenses and the weighted average cost of capital reflective of a market participant. These assumptions are considered to be a Level 3 measurement as defined in ASC 820, as they utilize inputs that are not observable in the market. Dispositions Thermal Disposition — On October 22, 2021, Clearway Energy Operating LLC entered into a binding agreement to sell the Thermal Business to KKR for total consideration of $1.9 billion, subject to customary closing adjustments. The closing of the transaction is subject to various customary closing conditions, approvals and consents and is expected to close in the first half of 2022. Effective with the approval by the Board of Directors and signing of the agreement to sell the Thermal Business, the Company concluded that all entities that are included within the Thermal Business will be treated as held for sale on a prospective basis, resulting in the assets and liabilities being reported as separate held for sale line items on the Company’s consolidated balance sheet as of December 31, 2021. Property, plant and equipment represents 78% and intangible assets represents 9% of assets classified as held for sale while long-term debt represents 85% of liabilities classified as held for sale. The Company expects to recognize a gain upon the completion of the Thermal Disposition. The Company's Thermal segment is comprised solely of the Thermal Business's results of operations. Sale of RPV Holdco 1 LLC — On May 14, 2020, the Company sold its interests in RPV Holdco 1 LLC, or RPV Holdco, to Spruce Power for net proceeds of approximately $75 million. The Company previously accounted for its interest in RPV Holdco as an equity method investment. The sale of the investment resulted in a gain of approximately $49 million. Sale of Energy Center Dover LLC and Energy Center Smyrna LLC Assets — On March 3, 2020, the Company, through Clearway Thermal LLC, sold 100% of its interests in Energy Center Dover LLC and Energy Center Smyrna LLC to DB Energy Assets, LLC for cash proceeds of approximately $15 million.

Investments Accounted for by th

Investments Accounted for by the Equity Method and Variable Interest Entities	12 Months Ended
	Dec. 31, 2021
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 Company's maximum exposure to loss as of December 31, 2021 is limited to its equity investment in the unconsolidated entities, as further summarized in the table below: Name Economic Interest Investment Balance (In millions) Avenal 50% $ 4 Desert Sunlight 25% 239 Elkhorn Ridge 66.7% 29 GenConn (a) 50% 86 San Juan Mesa 75% 23 $ 381 (a) GenConn is a variable interest entity. As of December 31, 2021 and 2020, the Company had $14 million and $10 million, respectively, 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 differences to equity in earnings of unconsolidated subsidiaries over the related useful life of the underlying assets acquired. The Company's pro-rata share of non-recourse debt held by unconsolidated affiliates was $345 million as of December 31, 2021. The following tables present summarized financial information for the Company's equity method investments: Year Ended December 31, 2021 2020 2019 Income Statement Data: (In millions) GenConn Operating revenues $ 55 $ 60 $ 60 Operating income 22 26 27 Net income 13 17 17 Desert Sunlight Operating revenues 205 209 205 Operating income 146 142 123 Net income 112 88 58 Other (a) (b) Operating revenues 49 299 318 Operating income 16 138 110 Net income $ 13 $ 60 $ 50 As of December 31, 2021 2020 Balance Sheet Data: (In millions) GenConn Current assets $ 38 $ 40 Non-current assets 328 344 Current liabilities 15 17 Non-current liabilities 178 185 Desert Sunlight Current assets 131 132 Non-current assets 1,228 1,244 Current liabilities 64 71 Non-current liabilities 904 921 Other (a) (b) Current assets 26 177 Non-current assets 172 2,201 Current liabilities 24 114 Non-current liabilities 98 700 (a) Includes Avenal, Elkhorn Ridge, San Juan Mesa, DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3. DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3 were consolidated by the Company during 2020 and are therefore excluded from the summarized balance sheet data as of December 31, 2020. (b) On February 3, 2021, the Company acquired an additional 35% equity interest in Agua Caliente and removed its equity investment in Agua Caliente and, on December 1, 2021, the Company acquired the remaining 50% equity investment in the Utah Solar Portfolio and removed its equity investment in the Utah Solar Portfolio. As a result, both Agua Caliente and the Utah Solar Portfolio are excluded from the summarized balance sheet data as of December 31, 2021 and from the summarized income statement data for the year ended December 31, 2021. Variable Interest Entities, or VIEs Entities that are Consolidated The Company has a controlling financial interest in certain entities which have been identified as VIEs under ASC 810, Consolidations, or ASC 810. These arrangements are primarily related to tax equity arrangements entered into with third parties in order to monetize certain tax credits associated with wind and solar facilities and are further described below. Summarized financial information for the Company's consolidated VIEs consisted of the following as of December 31, 2021: (In millions) Alta TE Holdco Buckthorn Renewables, LLC DGPV Funds (a) Kawailoa Partnership Langford TE Partnership LLC Lighthouse Renewable Holdco LLC (b) Lighthouse Renewable Holdco 2 LLC (c) Other current and non-current assets $ 53 $ 4 $ 104 $ 40 $ 17 $ 84 $ 83 Property, plant and equipment 331 202 592 135 132 605 377 Intangible assets 212 — 16 — 2 — — Total assets 596 206 712 175 151 689 460 Current and non-current liabilities 40 10 76 103 18 150 118 Total liabilities 40 10 76 103 18 150 118 Noncontrolling interest 13 44 6 48 66 416 239 Net assets less noncontrolling interests $ 543 $ 152 $ 630 $ 24 $ 67 $ 123 $ 103 (a) DGPV Funds is comprised of DGPV Fund 2 LLC, Clearway & EFS Distributed Solar LLC, DGPV Fund 4 LLC, Golden Puma Fund LLC, Renew Solar CS4 Fund LLC and Chestnut Fund LLC. (b) Lighthouse Renewable Holdco LLC consolidates Mesquite Star Tax Equity Holdco LLC and Black Rock TE Holdco LLC, which are also consolidated VIEs. (c) Lighthouse Renewable Holdco 2 LLC consolidates Mesquite Sky TE Holdco LLC, which is also a consolidated VIE. (In millions) Oahu Pinnacle Repowering Partnership LLC Rattlesnake TE Holdco LLC Rosie Target Co LLC Wildorado TE Holdco Other(a) Other current and non-current assets $ 47 $ 12 $ 30 $ 26 $ 21 $ 16 Property, plant and equipment 172 108 194 251 225 168 Intangible assets — 18 — — — 1 Total assets 219 138 224 277 246 185 Current and non-current liabilities 114 6 23 100 18 44 Total liabilities 114 6 23 100 18 44 Noncontrolling interest 31 78 98 140 121 84 Net assets less noncontrolling interests $ 74 $ 54 $ 103 $ 37 $ 107 $ 57 (a) Other is comprised of Crosswind Transmission, LLC, Hardin Hilltop Wind LLC, Elbow Creek TE Holdco and Spring Canyon TE Holdco projects. Pinnacle Repowering Partnership LLC — On February 26, 2021, the Company entered into an amended agreement with CWSP Pinnacle Holding LLC, an indirect subsidiary of CEG, with respect to Pinnacle Repowering Partnership LLC in order to facilitate the repowering of the Pinnacle wind project, a 54 MW wind facility located in Mineral County, West Virginia. On March 10, 2021, the Company contributed its interest in the Pinnacle wind project to Pinnacle Repowering Partnership LLC concurrent with entering into a financing agreement as further described in Note 7, Long-term Debt . The Company owns 100% of the Class A membership interests in Pinnacle Repowering Partnership LLC, which is a VIE, and the Company consolidates its interest as the primary beneficiary and managing member. CWSP Pinnacle Holding LLC owns 100% of the Class B membership interests in Pinnacle Repowering Partnership LLC and is entitled to allocations of 15% of the cash distributions from the partnership. On March 10, 2021, CWSP Pinnacle Holding LLC contributed $27 million in equipment to the partnership, which was a transfer of assets under common control and recorded at historical cost in property, plant and equipment, with a corresponding non-cash contribution in Pinnacle Repowering Partnership LLC's noncontrolling interests. Additionally, on March 10, 2021, the Pinnacle wind project acquired equipment from CEG for $21 million in cash consideration. On December 15, 2021, in connection with the completion of the repowering of the project, a third-party tax equity investor acquired the Class A membership interests in Pinnacle Tax Equity Holdco LLC, which is a tax equity fund, and the holder of the Pinnacle wind project, for $48 million. The Company consolidates Pinnacle Tax Equity Holdco LLC, as primary beneficiary through its consolidated subsidiary Pinnacle Repowering Partnership LLC, who acts as managing member. In addition, upon completion of the repowering, the Company made a payment of $64 million, which was utilized along with the proceeds of the tax equity investment to repay the outstanding debt under the financing agreement referenced above. The Company utilizes the HLBV method to determine the net income or loss allocated to tax equity noncontrolling interest. Rattlesnake TE Holdco LLC — As described in Note 3, Acquisitions and Dispositions , on January 12, 2021, the Company acquired CEG's equity interest and a third-party investor's minority interest in CWSP Rattlesnake Holding LLC for $132 million. CWSP Rattlesnake Holding LLC owns Rattlesnake Class B LLC, which owns the Class B membership interests in Rattlesnake TE Holdco LLC, which is a VIE. Rattlesnake Class B LLC is the primary beneficiary and managing member and consolidates its interest in Rattlesnake TE Holdco LLC, which owns the Rattlesnake wind project. Subsequent to the acquisition, on January 12, 2021 the third-party tax equity investor contributed $107 million into Rattlesnake TE Holdco LLC in exchange for the Class A membership interests. The proceeds from the tax equity contribution along with cash contributed by CEG were used to repay a portion of the $176 million of the outstanding principal under the Rattlesnake Class B LLC credit facility. The Company utilizes the HLBV method to determine the net income or loss allocated to tax equity noncontrolling interest. DGPV Holdco 3 Consolidation — DGPV Holdco 3 LLC or DGPV Holdco 3 owned approximately 113 MW of Distributed Solar capacity, based on cash to be distributed, with a weighted average remaining contract life of approximately 21 years. On May 29, 2020, the final construction projects for DGPV Holdco 3 were placed in service which resulted in a reconsideration event for consolidation of the entity. Upon the reconsideration event, the Company determined that it was the primary beneficiary of DGPV Holdco 3, as it is entitled to 99% of allocations of income and cash distributions from the entity. As such, effective on May 29, 2020, the Company consolidates DGPV Holdco 3, and records the interest owned by CEG as noncontrolling interest. DGPV Holdco 3 owns an interest in two tax equity funds with tax equity investors, both of which are consolidated by DGPV Holdco 3, and the interests owned by the tax equity investors are shown as noncontrolling interests. The Company removed its equity method investment in DGPV Holdco 3 of $155 million as of May 29, 2020 and recorded the difference between the net assets consolidated and the investment balance as a reduction to noncontrolling interests. The Company acquired CEG's interest in DGPV Holdco 3 on November 2, 2020 as further described in Note 3, Acquisitions and Dispositions and below . Prior to the reconsideration event described above, the Company invested $10 million of cash in DGPV Holdco 3 during the first half of 2020. DGPV Tax Equity Funds — As described in Note 3, Acquisitions and Dispositions , on November 2, 2020, the Company acquired the Class B membership interests in DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3, or the DGPV Holdco Entities, from Renew DG Holdings LLC, a subsidiary of CEG. The Company previously held the Class A membership interests in the DGPV Holdco Entities and accounted for its interests in DGPV Holdco 1 and DGPV Holdco 2 as equity method investments, while DGPV Holdco 3 was consolidated by the Company effective May 29, 2020 as further described above. Concurrent with the acquisition, the Company transferred its interests to DG-CS Master Borrower LLC. Effective with the acquisition of the Class B membership interests of the DGPV Holdco Entities, the Company consolidates all of the DGPV Holdco Entities, including DG-CS Master Borrower LLC, and its subsidiaries, which consist of seven projects including six tax equity funds that collectively own approximately 172 distributed solar projects with a combined 286 MW of capacity. Each of the six tax equity funds is a VIE, where the Company is the primary beneficiary and consolidates the fund, with the tax equity investor's interest shown as noncontrolling interest or redeemable noncontrolling interest. The Company utilizes the HLBV method to determine its share of the income or losses in the investees. The Company removed its equity method investments in DGPV Holdco 1 and DGPV Holdco 2 of $144 million as of November 2, 2020 and recorded the difference between the net assets consolidated and the investment balance as a reduction to noncontrolling interests. Langford Tax Equity Partnership, LLC — As described in Note 3, Acquisitions and Dispositions , on November 20, 2020, the Company acquired 100% of the Class B membership interest in Langford Holding LLC from CEG for $55 million as well as 100% of the Class A membership interests in Langford Holding LLC from a third-party investor for $9 million. Langford Holding LLC owns 100% of the membership interests in Langford Class B Holdco LLC, which owns 100% of the Class B interest in Langford Tax Equity Partnership LLC, which indirectly owns 100% of the interest in a 160 MW wind project. Langford Tax Equity Partnership LLC is a variable interest entity. The Company is the primary beneficiary, through its position as managing member, and indirectly consolidates Langford Tax Equity Partnership LLC, through Langford Class B Holdco LLC. The Class A member is a tax equity investor whose interest is reflected as noncontrolling interest on the Company's consolidated balance sheet. The project achieved repowering COD in November 2020. The Company utilizes the HLBV method for income or loss allocation to the tax equity investor's noncontrolling interest. Lighthouse Partnership Arrangements Lighthouse Renewable Holdco LLC — As described in Note 3, Acquisitions and Dispositions , on September 1, 2020, the Company, through its indirect subsidiary Lighthouse Renewable Class A LLC, acquired the Class A membership interests in Lighthouse Renewable Holdco LLC (formerly Mesquite Star Pledgor LLC) from Clearway Renew LLC, a subsidiary of CEG. Lighthouse Renewable Holdco LLC is a VIE and at the time of the acquisition the Company was not the primary beneficiary. Accordingly, the Company recorded the acquired interest as an equity method investment. On December 21, 2020, CEG sold its Class B membership interest in Lighthouse Renewable Holdco LLC to a third-party investor which resulted in a reconsideration event for consolidation of the entity. Upon the reconsideration event, the Company determined that it was the primary beneficiary of Lighthouse Renewable Holdco LLC. As such, effective on December 21, 2020, the Company consolidates Lighthouse Renewable Holdco LLC, and shows the Class B interests owned by the third-party investor as noncontrolling interests on the Company’s consolidated balance sheet. Through its Class A membership interests, the Company receives 50.01% of income and distributable cash. In addition, Lighthouse Renewable Holdco LLC holds the Class B interests in a tax equity fund, Mesquite Star Tax Equity Holdco LLC, that holds the Mesquite Star project. The tax equity investor's interest is shown as noncontrolling interest. The HLBV method is utilized to allocate the income or losses of Mesquite Star Tax Equity Holdco LLC. As described in Note 3, Acquisitions and Dispositions , on December 29, 2021, Lighthouse Renewable Holdco LLC, through its indirect wholly-owned subsidiary, Lighthouse Renewable Holding Sub LLC, acquired the Class B interests in a partnership, Black Rock Wind Holding LLC, which consolidates, as the direct owner of the primary beneficiary, a tax equity fund, Black Rock TE Holdco LLC, that holds the Black Rock wind project. The tax equity investor’s interest is shown as noncontrolling interest and the HLBV method is utilized to allocate the income or losses of Black Rock TE Holdco LLC. As described in Note 3, Acquisitions and Dispositions , the third-party investor in Lighthouse Renewable Holdco LLC also acquired and contributed an interest in Black Rock Wind Holding LLC to Lighthouse Renewable Holdco LLC. The Company recorded the related noncontrolling interest at historical carrying amount, with the offset to contributed capital. Lighthouse Renewable Holdco 2 LLC — On December 17, 2021, the Company formed Lighthouse Renewable Holdco 2 LLC, a partnership between the Company and a third-party investor. Lighthouse Renewable Holdco 2 LLC is a VIE and the Company is the primary beneficiary, through its role as managing member. As described in Note 3, Acquisitions and Dispositions , on December 17, 2021, Lighthouse Renewable Holdco 2 LLC acquired the Class B interests in a partnership, Mesquite Sky Holding LLC, which consolidates, as the direct owner of the primary beneficiary, a tax equity fund, Mesquite Sky TE Holdco LLC, that holds the Mesquite Sky wind project. The tax equity investor’s interest is shown as noncontrolling interest and the HLBV method is utilized to allocate the income or losses of Mesquite Sky TE Holdco LLC. As described in Note 3, Acquisitions and Dispositions , the third-party investor in Lighthouse Renewable Holdco 2 LLC also acquired and contributed an interest in Mesquite Sky Holding LLC to Lighthouse Renewable Holdco 2 LLC. The Company recorded the related noncontrolling interest at historical carrying amount, with the offset to contributed capital. Rosie TargetCo LLC — As described in Note 3, Acquisitions and Dispositions , on December 21, 2020, the Company acquired 100% of CEG's Class A membership interests of Rosie TargetCo LLC which owns 100% interest in Rosie Class B LLC, which in turn owns 100% of the Class B membership interest of Rosie TE Holdco LLC. The Company consolidates Rosie TargetCo LLC as a VIE as the Company is the primary beneficiary, through its role as managing member. The Class B membership interest of Rosie TargetCo LLC is owned by a third-party investor and is reflected as noncontrolling interest on the Company’s consolidated balance sheet. Through its Class A membership interests in Rosie TargetCo LLC, the Company receives 50% of income and distributable cash. Rosie TargetCo indirectly consolidates Rosie TE Holdco LLC, which is also a VIE. The tax equity investor's interest is shown as noncontrolling interest. The HLBV method is utilized to allocate the income or losses of Rosie TE Holdco LLC. Kawailoa Partnership — On August 31, 2018, the Company entered into an agreement with Clearway Renew LLC, a subsidiary of CEG, to acquire the Class A membership interests in the Kawailoa Solar Partnership LLC, or Kawailoa Partnership, for $9 million in cash consideration. The purpose of the partnership is to own, finance, operate, and maintain the Kawailoa Solar project, a 49 MW utility-scale solar generation project, an indirect subsidiary of the Kawailoa Partnership, located in Oahu, Hawaii. The Kawailoa Solar project is contracted to sell power under a 22-year PPA with Hawaiian Electric Company, or HECO. The Kawailoa Solar project is 51% owned by the Kawailoa Partnership, with the remaining 49% owned by a third-party investor. The Kawailoa Partnership consolidates the Kawailoa Solar project through its controlling majority interest. On May 7, 2019, the Company made an initial capital contribution of $2 million, which represents 20% of its total anticipated capital contributions. The Company assumed non-recourse debt of $120 million, as further described in Note 10 , Long-term Debt, and non-controlling interests attributable to third parties in the amount of $21 million. Effective May 1, 2019, the Company, as a Class A member, is the primary beneficiary through its position as managing member and consolidates Kawailoa Partnership. Allocations of income and taxable items are equal to the distributions of available cash, which is currently 95% to the Company and 5% to Clearway Renew LLC. The Company's acquisition of the Class A membership interests in the Kawailoa Partnership was accounted for as a transfer of assets under common control and was recorded at historical cost in accordance with ASC 805-50, Business Combinations — Related Issues . The difference between the cash paid and payable recorded and the historical value of the assets was recorded as a distribution to CEG and decreased the balance of its noncontrolling interest. Upon reaching COD in November of 2019, the Kawailoa Solar project's fixed assets were placed in service and began to depreciate. On December 22, 2019, Kawailoa Solar Holdings LLC, a tax equity fund, received its final equity contribution of $61 million. The proceeds were utilized to repay the ITC bridge loan in the amount of $57 million, and the construction debt was converted to term debt (and upsized, with an additional $5 million drawn). Distributions were paid to the third-party investor and Clearway Renew LLC, funded by the excess of the tax equity investment and the term loan upsizing above the amount of the bridge loan repayment and related fees. On December 27, 2019, the Company made its substantial completion contribution of $7 million into the Kawailoa Partnership, which was also utilized to make a distribution to Clearway Renew LLC. In addition, the Company started applying HLBV to allocate income attributable to the tax equity investor during the fourth quarter of 2019. Oahu Partnership — On August 31, 2018, the Company entered into an agreement with Clearway Renew LLC, a subsidiary of CEG, to acquire the Class A membership interests in the Zephyr Oahu Partnership LLC, or Oahu Partnership, for $20 million in cash consideration. The purpose of the partnership is to own, finance, operate, and maintain the Oahu Solar projects, which consist of Lanikuhana and Waipio, utility-scale solar generation projects with rated capacity of 15 MW and 46 MW, respectively, the indirect subsidiaries of the Oahu Partnership, located in Oahu, Hawaii. The Oahu Solar projects are contracted to sell power under a 22-year PPA with HECO. The Oahu Partnership consolidates the Oahu Solar projects through its controlling majority interest. On March 8, 2019, the Company made an initial capital contribution of $4 million, which represents 20% of its total anticipated capital contributions. The Company also assumed non-recourse debt of $143 million, as further described in Note 10 , Long-term Debt , and $18 million of non-controlling interest attributable to a tax equity investor's initial contribution. Effective March 8, 2019, the Company, as a Class A member, is the primary beneficiary through its position as managing member and consolidates Oahu Partnership. Allocations of income and taxable items are equal to the distributions of available cash, which is currently 95% to the Company and 5% to Clearway Renew LLC. The Company's acquisition of the Class A membership interests in the Oahu Partnership was accounted for as a transfer of assets under common control and was recorded at historical cost in accordance with ASC 805-50, Business Combinations - Related Issues . The difference between the cash paid and payable recorded and the historical value of the assets was recorded as a contribution from CEG and increased the balance of its noncontrolling interest. Upon reaching COD in September 2019, the Oahu Solar projects' fixed assets were placed in service and began to depreciate. On November 12, 2019, the tax equity investor made its final tax-equity contribution of $71 million and the proceeds were utilized to repay the related ITC bridge loan in the amount of $67 million, and the construction loan was converted to term debt. The Company paid the remaining 80% of the equity commitment in the amount of $16 million to Clearway Renew LLC when the Oahu Solar projects reached certain milestones in December 2019. In addition, the Company started applying HLBV to allocate income attributable to the tax equity investor during the third quarter of 2019. Repowering Partnership II LLC — On August 30, 2018, Wind TE Holdco, an indirect subsidiary of the Company, formed Repowering Partnership LLC with Clearway Renew LLC, an indirect subsidiary of CEG, in order to facilitate the repowering of wind facilities of two of its indirect subsidiaries, Elbow Creek Wind Project LLC, or Elbow Creek, and Wildorado Wind LLC, or Wildorado Wind. Wind TE Holdco contributed its interests in the two facilities and Clearway Renew LLC contributed a turbine supply agreement, including title to certain components that qualify for production tax credits. Wind TE Holdco is the managing member of the partnership and consolidates the entity, which is a VIE. Clearway Renew LLC is initially entitled to allocations of 21% of income, which is reflected in Wind TE Holdco’s noncontrolling interests. On June 14, 2019, Repowering Partnership LLC was replaced with Repowering Partnership II LLC as the owner of the Elbow Creek and Wildorado Wind projects as well as Repowering Partnership Holdco LLC, which concurrently entered into a financing agreement for construction debt commitment totaling $352 million, as further described in Note 10, Long-term Debt . Repowering of the Elbow Creek project was completed and on November 26, 2019, a third-party tax equity investor purchased 100% of the Class A membership interests in Elbow Creek Repowering Tax Equity Holdco LLC, or Elbow TE Holdco for $89 million pursuant to a membership interest purchase agreement dated June 14, 2019. The Company also contributed $4 million. In connection with the completion of the Elbow Creek repowering, the construction loan of $93 million was repaid with the proceeds from the combined proceeds from the tax equity investor and the Company. The Company began applying HLBV during the fourth quarter to allocate income between the partners of Elbow TE Holdco. In connection with the closing, the allocations of income at Repowering Partnership II LLC (which indirectly consolidates both projects) changed to 59.63% for Wind TE Holdco LLC (the Company member) and 40.37% for CWSP Wildorado Elbow Holding LLC (the CEG member). In addition, approximately half of the repowered Wildorado equipment was placed in service in December 2019, with the remaining equipment being placed in service in January of 2020. In connection with repowering of the projects, the Company revised the remaining useful life of the property, plant and equipment that was replaced, resulting in additional expense of $54 million during the year ended December 31, 2019 related to accelerated depreciation. On February 7, 2020, a third- party tax equity investor purchased 100% of the Class A membership interests in Wildorado TE Holdco, for $148 million. In addition, the Company contributed $112 million to Wildorado TE Holdco. The combined proceeds were used to repay construction debt under the Repowering Partnership Holdco credit agreement, as described in Note 10, Long-term Debt . The third-party tax equity investor, or Wildorado Investor, will receive 99% of allocations of taxable income and other items until the Wildorado Investor obtains a specified return on its initial investment, or the last day of the PTC period, whichever occurs sooner. At such time, the allocations to the Wildorado Investor will change to 5%. Until such time, the Wildorado Investor will receive a variable percentage of cash distributions. Wildorado TE Holdco is a VIE and the Repowering Partnership II LLC is the primary beneficiary through its position as managing member. As a result, the Company consolidates Wildorado TE Holdco, with the Wildorado Investor's interest shown as noncontrolling interest. In connection with the Wildorado TE Holdco closing, the allocations of income at Repowering Partnership II LLC changed to 60.14% for Wind TE Holdco LLC (the Company member) and 39.86% for CWSP Wildorado Elbow Holding LLC (the CEG member). On May 11, 2020, the Company acquired CEG's interest in Repowering Partnership II LLC, for cash consideration of $70 million. Repowering Partnership II LLC is no longer a VIE and subsequent to the acquisition, is a wholly-owned subsidiary of the Company. Repowering Partnership II LLC continues to own interests in two VIEs, Wildorado Repowering Tax Equity Holdco LLC, or Wildorado TE Holdco, and Elbow Creek Repowering Tax Equity Holdco LLC, or Elbow Creek TE Holdco. The Company removed the related noncontrolling interest balance of $8 million and recorded the difference between the cash paid and the noncontrolling interest balance removed as a reduction to noncontrolling interests. The Company utilizes the HLBV method to determine the net income or loss allocated to tax equity noncontrolling 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 receives 94.34% until the flip point, at which time the allocations to the Company of distributable cash will change to 97.12%, unless the flip point will not have occurred by a specified date, which would result in 100% of distributable cash 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. Spring Canyon — The Company holds 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, and Invenergy Wind Global LLC owns 9.9% of the Class B interests. The projects are 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 receives a variable percentage of cash distributions based on the projects’ production level during the prior year. 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.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment The Company's major classes of property, plant, and equipment were as follows: December 31, 2021 December 31, 2020 Depreciable Lives (In millions) Facilities and equipment $ 9,747 $ 9,254 2 - 40 Years Land and improvements 320 224 Construction in progress (a) 84 62 Total property, plant and equipment 10,151 9,540 Accumulated depreciation (2,501) (2,323) Net property, plant and equipment $ 7,650 $ 7,217 (a) As of December 31, 2021 and 2020, construction in progress includes $17 million and $14 million, respectively, of capital expenditures that relate to prepaid long-term service agreements in the Conventional segment. Depreciation expense related to property, plant and equipment during the years ended December 31, 2021, 2020 and 2019 was $499 million, $420 million and $395 million, respectively. The Company accelerated depreciation of the Pinnacle wind project in connection with the repowering project, which resulted in additional depreciation expense in the amount of $34 million in 2021 and $9 million in 2020. The Company recorded long-lived asset impairments during each of the years ended December 31, 2021 and December 31, 2020, as further described in Note 9, Asset Impairments.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments 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. For cash and cash equivalents, restricted cash, accounts receivable — trade, accounts payable — trade, accounts payable — affiliates and accrued expenses and current other liabilities, the carrying amounts approximates fair value because of the short-term maturity of those instruments and are classified as Level 1 within the fair value hierarchy. The carrying amounts and estimated fair values of the Company’s recorded financial instruments not carried at fair market value or that do not approximate fair value are as follows: As of December 31, 2021 As of December 31, 2020 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Liabilities: Long-term debt, including current portion — affiliate $ 1 $ 1 $ 1 $ 1 Long-term debt, including current portion — external (a) 7,782 7,997 7,048 7,020 (a) Excludes net debt issuance costs, which are recorded as a reduction to long-term debt on the Company's consolidated balance sheets. The fair value of the Company's publicly-traded long-term debt is based on quoted market prices and is classified as Level 2 within the fair value hierarchy. The fair value of debt securities, non-publicly traded long-term debt and certain notes receivable of the Company are based on expected future cash flows discounted at market interest rates, or current interest rates for similar instruments with equivalent credit quality and are classified as Level 3 within the fair value hierarchy. The following table presents the level within the fair value hierarchy for long-term debt, including current portion as of December 31, 2021 and 2020: As of December 31, 2021 As of December 31, 2020 Level 2 Level 3 Level 2 Level 3 (In millions) Long-term debt, including current portion $ 2,160 $ 5,838 $ 1,906 $ 5,115 Recurring Fair Value Measurements The Company records its derivative assets and liabilities at fair market value on its consolidated balance sheets. 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, 2021 As of December 31, 2020 Fair Value Fair Value (a) Fair Value Fair Value (a) (In millions) Level 2 Level 3 Level 2 Level 3 Derivative assets Interest rate contracts $ 6 $ — $ 1 $ — Other financial instruments (b) — 25 — 29 Total assets $ 6 $ 25 $ 1 $ 29 Derivative liabilities Commodity contracts $ — $ 179 $ — $ 44 Interest rate contracts 63 — 129 — Total liabilities $ 63 $ 179 $ 129 $ 44 (a) There were no derivative assets classified as Level 1 or Level 3 and no liabilities classified as Level 1 as of December 31, 2021 and December 31, 2020. (b) SREC contract acquired on November 2, 2020. The following table reconciles the beginning and ending balances for instruments that are recognized at fair value in the consolidated financial statements using significant unobservable inputs: Year ended December 31, 2021 2020 (In millions) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Beginning balance $ (15) $ (9) Total losses for the period included in earnings (93) — Contracts acquired (52) (6) Settlements 6 — Ending balance $ (154) $ (15) Change in unrealized losses included in earnings for derivatives and other financial instruments held as of December 31, $ (93) $ 1 Derivative and Financial Instruments Fair Value Measurements The Company's contracts are non-exchange-traded and valued using prices provided by external sources. The Company uses quoted observable forward prices to value its energy contracts. To the extent that observable forward prices are not available, the quoted prices reflect the average of the forward prices from the prior year, adjusted for inflation. As of December 31, 2021, contracts valued with prices provided by models and other valuation techniques make up 74% of derivative liabilities and 100% of other financial instruments. The Company’s significant positions classified as Level 3 include physical commodity contracts executed in illiquid markets. The significant unobservable inputs used in developing fair value include illiquid power tenors and location pricing, which is derived by extrapolating pricing as a basis to liquid locations. The tenor pricing and basis spread are based on observable market data when available or derived from historic prices and forward market prices from similar observable markets when not available. The following table quantifies the significant unobservable inputs used in developing the fair value of the Company's Level 3 positions as of December 31, 2021: December 31, 2021 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Commodity Contracts $ — $ (179) Discounted Cash Flow Forward Market Price (per MWh) $ 13.93 $ 56.06 $ 27.46 Other Financial Instruments 25 — Discounted Cash Flow Forecast annual generation levels of certain DG solar facilities 80,872 MWh 129,913 MWh 124,783 MWh The following table provides the impact on the fair value measurements to increases/(decreases) in significant unobservable inputs as of December 31, 2021: Significant Observable Input Position Change In Input Impact on Fair Value Measurement Forward Market Price Power Buy Increase/(Decrease) Higher/(Lower) Forward Market Price Power Sell Increase/(Decrease) Lower/(Higher) Forecast Generation Levels Sell Increase/(Decrease) Higher/(Lower) 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 is, for interest rate swaps, calculated based on credit default swaps using the bilateral method. For commodities, to the extent that the Net Exposure under a specific master agreement is an asset, the Company uses the counterparty’s default swap rate. If the Net Exposure under a specific master agreement is a liability, the Company uses a proxy of its own 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, 2021, the non-performance reserve was a $17 million gain recorded primarily to total operating revenues in the consolidated statement of operations. 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) monitoring of counterparties' credit limits on as needed basis; (iii) as applicable, 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.

Accounting for Derivative Instr

Accounting for Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
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 change in fair value of the derivatives to accumulated OCI/OCL, until the hedged transactions occur and are 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. Interest Rate Swaps The Company enters into interest rate swap agreements in order to hedge the variability of expected future cash interest payments. As of December 31, 2021, the Company had interest rate derivative instruments on non-recourse debt extending through 2031, a portion of which were designated as cash flow hedges. Under the interest rate swap agreements, the Company pays a fixed rate and the counterparties to the agreements pay a variable interest rate. Energy Related Commodities As of December 31, 2021, the Company had energy-related derivative instruments extending through 2033. At December 31, 2021, these contracts were not designated as cash flow or fair value 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, 2021 and 2020: Total Volume December 31, 2021 December 31, 2020 Commodity Units (In millions) Natural Gas MMBtu 2 1 Power MWh (17) (8) Interest Dollars $ 1,326 $ 1,600 Fair Value of Derivative Instruments The following table summarizes the fair value within the derivative instrument valuation on the consolidated balance sheets: Fair Value Derivative Assets Derivative Liabilities December 31, 2021 December 31, 2020 December 31, 2021 December 31, 2020 (In millions) Derivatives Designated as Cash Flow Hedges: Interest rate contracts current $ — $ — $ 5 $ 8 Interest rate contracts long-term 2 — 3 15 Total Derivatives Designated as Cash Flow Hedges $ 2 $ — $ 8 $ 23 Derivatives Not Designated as Cash Flow Hedges: Interest rate contracts current $ — $ — $ 17 $ 25 Interest rate contracts long-term 4 1 38 81 Commodity contracts current — — 24 5 Commodity contracts long-term — — 155 39 Total Derivatives Not Designated as Cash Flow Hedges $ 4 $ 1 $ 234 $ 150 Total Derivatives $ 6 $ 1 $ 242 $ 173 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 level. As of December 31, 2021 and 2020, there was no outstanding collateral paid or received. The following tables summarize the offsetting of derivatives by counterparty: Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2021 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts (In millions) Derivative liabilities $ (179) $ — $ (179) Total commodity contracts $ (179) $ — $ (179) Interest rate contracts Derivative assets $ 6 $ (5) $ 1 Derivative liabilities (63) 5 (58) Total interest rate contracts $ (57) $ — $ (57) Total derivative instruments $ (236) $ — $ (236) Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2020 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts (In millions) Derivative liabilities $ (44) $ — $ (44) Total commodity contracts $ (44) $ — $ (44) Interest rate contracts Derivative assets $ 1 $ — $ 1 Derivative liabilities (129) — (129) Total interest rate contracts $ (128) $ — $ (128) Total derivative instruments $ (172) $ — $ (172) 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, 2021 2020 2019 (In millions) Accumulated OCL beginning balance $ (35) $ (37) $ (45) Reclassified from accumulated OCL to income due to realization of previously deferred amounts 11 11 22 Mark-to-market of cash flow hedge accounting contracts 11 (9) (14) Accumulated OCL ending balance $ (13) $ (35) $ (37) Accumulated OCL attributable to noncontrolling interests — (2) — Accumulated OCL attributable to Clearway Energy LLC $ (13) $ (33) $ (37) Losses expected to be realized from OCL during the next 12 months $ (9) Amounts reclassified from accumulated OCL into income are recorded to interest expense. Impact of Derivative Instruments on the Consolidated Statements of Operations Mark-to-market gains and losses related to the Company's derivatives are recorded in the consolidated statements of operations as follows: Year ended December 31, 2021 2020 2019 (In millions) Interest Rate Contracts (Mark-to-market interest expense) $ 53 $ (38) $ (65) Commodity Contracts (Mark-to-market for economic hedging activities) (a) (83) (4) (9) (a) Relates to long-term commodity contracts at Elbow Creek Wind Project LLC, or Elbow Creek, Mesquite Star, Mt. Storm and Mesquite Sky and gains or losses are recognized in operating revenues. A portion of the Company’s derivative commodity contracts relates to its Thermal Business for the purchase of fuel/electricity 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. See Note 6, Fair Value of Financial Instruments

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets	Intangible Assets Intangible Assets — The Company's intangible assets as of December 31, 2021 and 2020 primarily reflect intangible assets established from its business acquisitions and are comprised of the following: • PPAs — Established predominantly with the acquisitions of the Alta Wind Portfolio, Walnut Creek, Tapestry, Laredo Ridge, Carlsbad Energy Center, Agua Caliente and the Utah Solar Portfolio. These represent the fair value of the PPAs acquired. These are amortized 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 are amortized as a reduction to operating revenue on a straight-line basis over the term of the PPAs. • Customer relationships — Established with the acquisition of Energy Center Omaha and Energy Center Phoenix, these intangibles represent the fair value at the acquisition date of the businesses' customer base. The customer relationships related to Energy Center Omaha are amortized as a reduction to operating revenue, which approximates the expected discounted future net cash flows by year. These intangible assets are included in the Thermal Business and were reclassified to held for sale during the fourth quarter of 2021. • Customer contracts — Established with the acquisition of 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. These intangible assets are included in the Thermal Business and were reclassified to held for sale during the fourth quarter of 2021. • Emission Allowances — These intangibles primarily consist of SO 2 and NO x emission allowances established with the El Segundo, Walnut Creek and Carlsbad Energy Center 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. • Other — Consists of a) 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 and Langford Wind; b) development rights related to certain solar business acquisitions; c) RECs acquired in connection with the acquisition of the Utah Solar Portfolio; and d) favorable leases acquired in connection with the acquisition of the Utah Star Portfolio. The following tables summarize the components of intangible assets subject to amortization: Year ended December 31, 2021 PPAs Leasehold Rights Customer Customer Contracts Emission Allowances Other Total (In millions) January 1, 2021 $ 1,661 $ 86 $ 66 $ 15 $ 17 $ 12 $ 1,857 Acquisitions (a) 1,324 — — — — 4 1,328 Reclassified to held for sale (b) — — (66) (15) — — (81) December 31, 2021 2,985 86 — — 17 16 3,104 Less accumulated amortization (566) (30) — — (3) (6) (605) Net carrying amount $ 2,419 $ 56 $ — $ — $ 14 $ 10 $ 2,499 (a) The weighted average life of acquired intangibles was 17 years for PPAs, 15 years for RECs and 15 years for favorable leases. (b) Thermal Business intangible assets were reclassified to held for sale during the fourth quarter of 2021. Year ended December 31, 2020 PPAs Leasehold Rights Customer Relationships Customer Contracts Emission Other Total (In millions) January 1, 2020 $ 1,630 $ 86 $ 66 $ 15 $ 17 $ 8 $ 1,822 Consolidation of DGPV Holdco Entities 23 — — — — — 23 Other 8 — — — — 4 12 December 31, 2020 1,661 86 66 15 17 12 1,857 Less accumulated amortization (431) (26) (11) (11) (3) (5) (487) Net carrying amount $ 1,230 $ 60 $ 55 $ 4 $ 14 $ 7 $ 1,370 The Company recorded amortization expense of $143 million during the year ended December 31, 2021, $91 million for the year ended December 31, 2020 and $73 million for the year ended December 31, 2019. Of these amounts, $135 million for the year ended December 31, 2021, $88 million for the year ended December 31, 2020 and $72 million for the year ended December 31, 2019, were related to the amortization of intangible assets for power purchase agreements and were recorded to contract amortization expense, which reduced operating revenues in the consolidated statements of operations. The Company estimates the future amortization expense for its intangibles for the next five years as follows: (In millions) 2022 $ 158 2023 155 2024 153 2025 153 2026 153

Asset Impairments

Asset Impairments	12 Months Ended
	Dec. 31, 2021
Asset Impairments [Abstract]
Asset Impairments	Asset Impairments 2021 Impairment Losses During the fourth quarter of 2021 in preparation and review of its annual budget, the Company updated its long-term estimates of operating and capital expenditures and revised its assessment of long-term merchant power prices, which was primarily informed by present conditions and did not contemplate future policy changes, which could impact renewable energy power prices. The annual budget process coincides with the Company's annual impairment analysis of long-lived assets. The impairment analysis reviews certain qualitative factors as well as the fair value of the facilities against its carrying value to determine if impairment indicators are present. The impairment analysis indicated that the projected future cash flows for several wind projects within the Renewables segment no longer supported the recoverability of the carrying value of the related long-lived assets. As such, the Company recorded an impairment loss of $6 million, which primarily related to property, plant, and equipment to reflect the assets at fair market value. The fair value of the facilities was determined using an income approach by applying a discounted cash flow methodology to the updated long-term budgets for each respective plant. The income approach included key inputs such as forecasted merchant power prices, operations and maintenance expense, and discount rates. The resulting fair value is a Level 3 fair value measurement. 2020 Impairment Losses During the fourth quarter of 2020 in preparation and review of its annual budget, the Company updated its long-term estimates of operating and capital expenditures and revised its assessment of long-term merchant power prices, which was primarily informed by present conditions and did not contemplate future policy changes, which could impact renewable energy power prices. The annual budget process coincides with the Company's annual impairment analysis of long-lived assets. The impairment analysis reviews certain qualitative factors as well as the fair value of the facilities against its carrying value to determine if impairment indicators are present. The impairment analysis indicated that the projected future cash flows for several wind projects within the Renewables segment no longer supported the recoverability of the carrying value of the related long-lived assets. As such, the Company recorded an impairment loss of $24 million, which primarily related to property, plant, and equipment to reflect the assets at fair market value. The fair value of the facilities was determined using an income approach by applying a discounted cash flow methodology to the updated long-term budgets for each respective plant. The income approach included key inputs such as forecasted merchant power prices, operations and maintenance expense, and discount rates. The resulting fair value is a Level 3 fair value measurement. Additionally, during the fourth quarter of 2020, as the Company updated its estimated cash flows in connection with the preparation and review of the Company's annual budget, the Company determined that there was a significant decrease in the estimated future cash flows for its equity method investment in San Juan Mesa, a facility in the Renewables segment located in Elida, New Mexico. The decrease in the forecasted cash flows which was primarily driven by a decline in forecasted revenue in future merchant periods, was significant enough to be considered an indication of a decline in value of the investment that was not temporary. The Company concluded there was an other-than-temporary impairment of its investment and recorded an impairment loss of $8 million to reflect the investment at fair market value. The resulting fair value is a Level 3 fair value measurement. 2019 Impairment Losses The Company recorded an impairment loss of $19 million related to a facility in the Thermal segment during the second quarter of 2019. The impairment was triggered by a potential sale negotiation with a third-party, which resulted in signing the purchase and sale agreement in September 2019, as further described in Note 3, Acquisitions and Dispositions . The fair value of the facility was determined using an income approach by applying a discounted cash flow methodology to the long-term budgets for each respective plant. The income approach utilized estimates of discounted future cash flows, which were Level 3 fair value measurement and include key inputs, such as forecasted power prices, operations and maintenance expense, and discount rates. The Company measured the impairment loss as the difference between the carrying amount and the fair value of the assets.

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2021
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, 2021 December 31, 2020 Interest rate % (a) Letters of Credit Outstanding at December 31, 2021 (In millions, except rates) Intercompany Note with Clearway Energy, Inc. $ 1 $ 1 1.490 2025 Senior Notes — 600 5.750 2026 Senior Notes — 350 5.000 2028 Senior Notes 850 850 4.750 2031 Senior Notes 925 — 3.750 2032 Senior Notes 350 — 3.750 Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 (b) 245 — 1.750 $ 83 Bridge Loan, due 2022 (c) 335 — S+1.000 Project-level debt: Agua Caliente Solar LLC, due 2037 684 — 2.395 - 3.633 45 Alta Wind Asset Management LLC, due 2031 13 14 L+2.625 — Alta Wind I-V lease financing arrangements, due 2034 and 2035 756 800 5.696 - 7.015 34 Alta Wind Realty Investments LLC, due 2031 24 25 7.000 — Borrego, due 2024 and 2038 54 57 Various — Buckthorn Solar, due 2025 123 126 L+1.750 21 Carlsbad Energy Holdings LLC, due 2027 136 156 L+1.625 62 Carlsbad Energy Holdings LLC, due 2038 407 407 4.120 — Carlsbad Holdco, due 2038 205 210 4.210 6 CVSR, due 2037 652 675 2.339 - 3.775 — CVSR Holdco Notes, due 2037 169 176 4.680 13 DG-CS Master Borrower LLC, due 2040 441 467 3.510 30 Duquesne, due 2059 (d) — 95 4.620 — El Segundo Energy Center, due 2023 193 250 L+1.875 - L+2.500 138 Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037 (d) — 327 Various — Kawailoa Solar Portfolio LLC, due 2026 78 81 L+1.375 14 Laredo Ridge, due 2028 72 78 L+2.125 3 Marsh Landing, due 2023 84 146 L+2.375 46 NIMH Solar, due 2024 176 191 L+2.000 10 Oahu Solar Holdings LLC, due 2026 86 89 L+1.375 10 Rosie Class B LLC, due 2027 78 80 L+1.750 17 Tapestry, due 2031 85 143 L+1.375 12 Utah Solar Holdings, due 2036 273 290 3.590 10 Walnut Creek, due 2023 74 126 L+1.750 116 WCEP Holdings, LLC, due 2023 30 35 L+3.000 — Other 180 199 Various 201 Subtotal project-level debt 5,073 5,243 Total debt 7,779 7,044 Less current maturities (773) (385) Less net debt issuance costs (71) (79) Add premiums (e) 4 5 Total long-term debt $ 6,939 $ 6,585 (a) As of December 31, 2021, L+ equals 3 month LIBOR plus x%, except Clearway Energy Operating LLC Revolving Credit Facility, due 2023, Marsh Landing, due 2023, and Walnut Creek, due 2023, where L+ equals 1 month LIBOR plus x% (b) Applicable rate is determined by the borrower leverage ratio, as defined in the credit agreement (c) S+ equals SOFR, plus x% (d) Thermal Business long-term debt reclassified to held for sale in the fourth quarter of 2021 (e) Premiums relate to the 2028 Senior Notes 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 respective arrangement. As of December 31, 2021, the Company was in compliance with all of the required principal, interest, sinking fund and redemption covenants. Bridge Loan Agreement On November 30, 2021, Clearway Energy Operating LLC entered into a senior secured bridge credit agreement, or the Bridge Loan Agreement. The Bridge Loan Agreement provides for a senior secured term loan facility in an aggregate principal amount of $335 million. Borrowings under the term loan facility bear interest, at Clearway Energy Operating LLC’s option, at a rate per annum equal to either (a) term SOFR, plus a SOFR adjustment and a margin equal to 1.00% during the period from December 1, 2021 through May 31, 2022, and 1.25% thereafter or (b) a base rate plus a margin equal to 0.00% during the period from December 1, 2021 through May 31, 2022, and 0.25% thereafter. The Bridge Loan Agreement will mature no later than November 29, 2022 and the Company intends to use the proceeds from the Thermal Disposition to repay the outstanding principal balance of the term loans under the Bridge Loan Agreement. Borrowings under the Bridge Loan Agreement are guaranteed by Clearway Energy LLC and certain subsidiaries of Clearway Operating LLC, other than subsidiaries that are excluded project companies, and are secured by substantially all of the assets of Clearway Energy Operating LLC and its guarantor subsidiaries. The borrowings under the term loan facility were used to acquire the Utah Solar Portfolio on December 1, 2021, as further described in Note 3, Acquisitions and Dispositions . Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility On November 30, 2021, Clearway Energy Operating LLC entered into the Sixth Amendment to Amended and Restated Credit Agreement, which amended the Company’s revolving credit facility to provide for an increase of the maximum permitted Borrower Leverage Ratio (as defined in the credit agreement governing the Company’s revolving credit facility) to 6.00 to 1.00 during the period commencing on November 30, 2021 and ending on the date which is the earliest of (i) two business days following the consummation of the Thermal Disposition, (ii) 120 days following the termination or expiration of the agreement entered into with KKR to sell the Thermal Business and (iii) the maturity date of the Bridge Loan Agreement, or the Leverage Period Termination Date. The Sixth Amendment also (i) permits the incurrence of the term loan facility under the Bridge Loan Agreement, (ii) permits the incurrence of hedging obligations, subject to certain conditions, and provides for a $40 million basket for cash collateral which may be provided to secure hedging obligations (iii) permits the prepayment of unsecured, junior or subordinated indebtedness at any time following the Leverage Period Termination Date, subject to certain conditions, including that, after giving effect to such payment, the Borrower Leverage Ratio would not be greater than 5.50 to 1.00 and the Borrower Interest Coverage Ratio (as defined in the credit agreement governing the Company's revolving credit facility) would not be less than 1.75 to 1.00 and (iv) implements certain other technical modifications. As of December 31, 2021, the Company had $245 million in outstanding borrowings under the revolving credit facility and $83 million in letters of credit outstanding. During the year ended December 31, 2021, the Company borrowed $622 million under the revolving credit facility, and subsequently repaid $377 million utilizing cash on hand and proceeds from the issuance of the 2031 Senior Notes, as described below. 2032 Senior Notes On October 1, 2021, Clearway Energy Operating LLC completed the sale of $350 million of senior unsecured notes due 2032, or the 2032 Senior Notes. The 2032 Senior Notes bear interest at 3.750% and mature on January 15, 2032. Interest on the 2032 Senior Notes is payable semi-annually on January 15 and July 15 of each year. The 2032 Senior Notes are unsecured obligations of Clearway Energy Operating LLC and are guaranteed by Clearway Energy LLC and by certain of Clearway Energy Operating LLC's wholly-owned current and future subsidiaries. The net proceeds from the 2032 Senior Notes were used, together with existing corporate liquidity, to repurchase the 2026 Senior Notes, as described below. 2026 Senior Notes Tender Offer and Redemption In October 2021, the Company repurchased and redeemed an aggregate principal amount of $350 million of the 2026 Senior Notes, through the cash tender offer announced on September 24, 2021 and the redemption of the remaining principal amount of $227 million on October 25, 2021. The 2026 Senior Notes repurchased and redeemed in October 2021 were effectuated at a premium of approximately 103% for total consideration of $359 million and, as a result, the Company recorded a loss on extinguishment in the amount of $9 million. The Company recorded an additional $3 million loss on extinguishment to write off the remaining unamortized deferred financing fees related to the 2026 Senior Notes. 2031 Senior Notes On March 9, 2021, Clearway Energy Operating LLC completed the sale of $925 million of senior unsecured notes due 2031, or the 2031 Senior Notes. The 2031 Senior Notes bear interest at 3.750% and mature on February 15, 2031. Interest on the 2031 Senior Notes is payable semi-annually on February 15 and August 15 of each year. The 2031 Senior Notes are unsecured obligations of Clearway Energy Operating LLC and are guaranteed by Clearway Energy LLC and by certain of Clearway Energy Operating LLC's wholly-owned current and future subsidiaries. The net proceeds from the 2031 Senior Notes were used to repurchase the 2025 Senior Notes, as described below, as well as to repay amounts outstanding under the Company’s revolving credit facility and for general corporate purposes. 2025 Senior Notes Tender Offer and Redemption In March 2021, the Company repurchased and redeemed an aggregate principal amount of $600 million of the 2025 Senior Notes, through the cash tender offer announced on March 2, 2021 and the redemption of the remaining principal amount of $183 million on March 17, 2021. The 2025 Senior Notes repurchased and redeemed in March 2021 were effectuated at a premium of approximately 106% for total consideration of $636 million and, as a result, the Company recorded a loss on extinguishment in the amount of $36 million. The Company recorded an additional $5 million loss on extinguishment to write off the remaining unamortized deferred financing fees related to the 2025 Senior Notes. 2020 Convertible Notes The 2020 Convertible Notes matured on June 1, 2020 and the Company repaid the outstanding principal amount of $45 million. The repayment was funded by the issuance of the 2028 Senior Notes. 2028 Senior Notes On May 21, 2020, the Company completed the issuance of an additional $250 million in aggregate principal amount of its 4.750% Senior Notes due 2028. The 2028 Senior Notes bear interest at 4.75% and mature on March 15, 2028. Interest on the 2028 Senior Notes is payable semi-annually on March 15 and September 15 of each year. The 2028 Senior Notes are unsecured obligations of Clearway Energy Operating, LLC and are guaranteed by Clearway Energy, LLC and by certain of Clearway Energy Operating LLC’s wholly-owned current and future subsidiaries. The notes were issued at a price of 102% of par plus accrued interest from December 11, 2019. The net proceeds were utilized to repay the $45 million outstanding principal amount of the Company's 2020 Convertible Notes on June 1, 2020, as well as to repay amounts outstanding under the Company’s revolving credit facility and for general corporate purposes. 2024 Senior Notes Redemption On January 3, 2020, the Company redeemed the $88 million aggregate principal amount of the 2024 Senior Notes that remained outstanding following the Company's tender offer for the 2024 Senior Notes in December 2019. The redemption was effectuated at a premium of 102.7% for a total consideration of $90 million and as a result, the Company recorded a loss on debt extinguishment in the amount of $3 million, which also included the write off of previously deferred financing fees related to the 2024 Senior Notes. Intercompany Note with Clearway Energy, Inc . On February 18, 2020, the Company entered into an intercompany demand promissory note with Clearway Energy, Inc. in the principal amount of $3 million. The unpaid principal amount bears interest at a rate equal to the short-term applicable federal rate, which is payable on the last day of each quarter, or at other times as agreed upon by the Company and Clearway Energy, Inc. As of December 31, 2021, $1 million was outstanding. Project level Debt Agua Caliente Solar LLC As part of the acquisition of Agua Caliente Borrower 1 LLC and the consolidation of Agua Caliente, as further described in Note 3, Acquisitions and Dispositions, the Company consolidated non-recourse debt of $716 million related to Agua Caliente Solar, LLC on February 3, 2021. The debt consists of a credit agreement with the Federal Financing Bank and accrues interest at fixed rates between 2.395% and 3.633%, which matures in 2037. Pinnacle Repowering Partnership HoldCo LLC On March 10, 2021, the Company entered into a financing agreement for non-recourse debt for a total commitment of $126 million related to the repowering of the Pinnacle wind project. The debt consists of a construction loan at an interest rate of LIBOR plus 1.00%. The Company's initial borrowings of $79 million were utilized to repay $53 million of the outstanding balance under the Tapestry Wind LLC financing agreement, which related to the Pinnacle wind project, to pay vendor invoices and fees and to acquire certain equipment from Clearway Renew LLC to be utilized in the repowering project. On December 15, 2021, the Company repaid the outstanding principal amount of $117 million. Rosamond Central (Rosie Class B LLC) On December 21, 2020, as part of the acquisition of Rosie TargetCo LLC, as further descried in Note 3, Acquisitions and Dispositions , the Company assumed the Amended and Restated Financing Agreement, which provided for a construction loan of up to $91 million, a cash equity bridge loan of up to $24 million and an investment tax credit loan of up to $132 million. On December 31, 2020, Rosie Class B, LLC converted the construction loan to a $80 million term loan and repaid the investment tax credit loan of $130 million, utilizing tax equity funding. The term loan bears annual interest at a rate of LIBOR plus an applicable margin, which is 1.75% per annum through the third anniversary of the term conversion, and 2.00% per annum thereafter through the maturity date of December 31, 2027. In addition, Rosie Class B LLC is party to several letter of credit facility agreements, not to exceed $23 million. As of December 31, 2021, a total of $17 million in letters of credit were outstanding. Consolidation of DGPV Holdco 3 Upon consolidation of DGPV Holdco 3, as described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities, the Company consolidates additional non-recourse debt for certain subsidiaries as further described below. Renew CS4 Borrower LLC, or CS4 Borrower, a consolidated subsidiary of DGPV Holdco 3, is party to a credit agreement for construction loans up to $97 million, an investment tax credit bridge loan, or ITC bridge loan, for up to $90 million and letter of credit facilities up to $5 million. The construction loan and the ITC bridge loan both have an interest rate of LIBOR plus an applicable margin of 2.00% per annum. As of June 30, 2020, all construction loans were converted to term loans and the ITC bridge loans were repaid in connection with tax equity funding. The term loan was repaid on November 2, 2020 with the proceeds of the term loan issued by DG-CS Master Borrower LLC, as described below. Chestnut Borrower LLC, a consolidated subsidiary of DGPV Holdco 3, is party to a credit agreement for term loans of up to $120 million and letters of credit of up to $8 million. The loans were repaid on November 2, 2020 with the proceeds of the term loan issued by DG-CS Master Borrower LLC, as described below DG-CS Master Borrower LLC On November 2, 2020, DG-CS Master Borrower LLC, a wholly-owned subsidiary of Clearway Energy Operating LLC, entered into a financing arrangement, which included the issuance of a $467 million term loan, as well as $30 million in letters of credit in support of debt service. The term loan bears interest at 3.51% and matures on September 30, 2040. The proceeds from the loan were utilized to repay existing project-level debt outstanding for Chestnut Borrower LLC, Renew Solar CS 4 Borrower LLC, DGPV 4 Borrower LLC and Puma Class B LLC of $107 million, $102 million, $92 million and $73 million, respectively and unwind related interest rate swaps in the amount of $42 million. The remaining proceeds were utilized to pay related fees and expenses and in part to acquire the Class B membership interests in the DGPV Holdco Entities and an SREC contract from CEG as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities. Concurrent with the refinancing, the projects were transferred under DG-CS Master Borrower LLC and the obligations under the financing arrangement are supported by the Company's interest in the projects. Utah Solar Holdings, LLC On September 1, 2020, Utah Solar Holdings, LLC, or Utah Solar, entered into a financing arrangement, which included the issuance of approximately $296 million in senior secured notes supported by the Company’s interest in the Utah projects (Four Brothers, Granite Mountain and Iron Springs, previously defined as the Utah Solar Portfolio), as well as $16 million in letters of credit in support of debt service obligations. The notes bear interest at 3.59% per annum and mature on December 31, 2036. The proceeds from the issuance were utilized to repay existing debt outstanding of approximately $247 million for the Utah projects and to unwind the related interest rate swaps in the amount of $33 million. The remaining proceeds were utilized to pay related fees and expenses, with the remaining $9 million distributed to Clearway Energy Operating LLC. NIMH Solar LLC On September 30, 2020, the Alpine, Blythe and Roadrunner projects were transferred under NIMH Solar LLC, a wholly- owned subsidiary of Clearway Energy Operating LLC. Concurrently, total project-level debt outstanding for Alpine, Blythe and Roadrunner of $158 million was assigned to NIMH Solar LLC. The consolidated facility was amended to a term loan for $193 million, as well as $16 million in letters of credit in support of debt service and project obligations. The term loan bears interest at an annual rate of LIBOR, plus an applicable margin, which is 2.00% per annum through the third anniversary of closing, and 2.125% per annum thereafter through the maturity date in September 2024. As a result of the amendment the Company received $35 million, which was utilized to pay related fees and expenses and along with existing project level cash, provided a distribution to Clearway Energy Operating LLC of $45 million. The obligations under the financing arrangement are supported by the Company’s interests in the projects. 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 a fixed rate 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. 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, 2021: % of Principal Fixed Interest Rate Floating Interest Rate Notional Amount at December 31, 2021 (In millions) Effective Date Maturity Date Avra Valley 88 % 2.33 % 3-Month LIBOR $ 35 November 30, 2012 November 30, 2030 Alta Wind Asset Management 100 % 2.47 % 3-Month LIBOR 13 May 22, 2013 May 15, 2031 Borrego 100 % 0.476 % 3-Month LIBOR 10 June 30, 2020 December 31, 2024 Buckthorn Solar 81 % Various 3-Month LIBOR 100 February 28, 2018 December 31, 2041 Carlsbad 100 % Various 3-Month LIBOR 136 Various September 30, 2027 El Segundo 100 % Various 3-Month LIBOR 193 Various Various Kansas South 75 % 2.368 % 6-Month LIBOR 15 June 28, 2013 December 31, 2030 Kawailoa Solar 94 % Various 3-Month LIBOR 74 November 30, 2019 October 31, 2040 Laredo Ridge 100 % Various 3-Month LIBOR 72 December 17, 2014 December 31, 2028 Marsh Landing 100 % Various 3-Month LIBOR 84 June 28, 2013 June 30, 2023 NIMH Solar LLC 100 % Various 3-Month LIBOR 176 September 30, 2020 Various Oahu Solar 96 % Various 3-Month LIBOR 83 November 30, 2019 October 31, 2040 Rosie Class B 95 % 1.446 % 3-Month LIBOR 74 December 31, 2020 Various South Trent 90 % 3.847 % 3-Month LIBOR 31 June 14, 2019 June 30, 2028 Tapestry 100 % Various 3-Month LIBOR 85 Various Various Viento Funding II 100 % 3.03 % 6-Month LIBOR 29 Various Various Viento Funding II 100 % 4.985 % 6-Month LIBOR 21 July 11, 2023 June 30, 2028 Walnut Creek Energy 90 % 3.543 % 3-Month LIBOR 66 June 28, 2013 May 31, 2023 WCEP Holdings 97 % 4.003 % 3-Month LIBOR 29 June 28, 2013 May 31, 2023 Total $ 1,326 Annual Maturities Annual payments based on the maturities of the Company's debt, for the years ending after December 31, 2021, are as follows: (In millions) 2022 $ 772 2023 709 2024 392 2025 (a) 369 2026 (a) 422 Thereafter (a) 5,537 Total $ 8,201 (a) Annual payments based on the maturities of Thermal Business long-term debt reclassified to held for sale in the fourth quarter of 2021 are $4 million, $15 million and $404 million due in 2025, 2026 and thereafter, respectively.

Members' Equity

Members' Equity	12 Months Ended
	Dec. 31, 2021
Members' Equity [Abstract]
Members' Equity	Members' Equity 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, 2021: Fourth Quarter 2021 Third Quarter 2021 Second Quarter 2021 First Quarter 2021 Distributions per Class A and Class B units $ 0.3400 $ 0.3345 $ 0.3290 $ 0.3240 Distributions per Class C and Class D units 0.3400 0.3345 0.3290 0.3240 On February 17, 2022, the Company declared a quarterly distribution on its Class A, Class B, Class C and Class D units of $0.3468 per unit payable on March 15, 2022.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In addition to the transactions and relationships described elsewhere in the notes to the consolidated financial statements, certain subsidiaries of CEG provide services to the Company and its project entities. Amounts due to CEG subsidiaries are recorded as accounts payable — affiliates and amounts due to the Company from CEG subsidiaries are recorded as accounts receivable — affiliates in the Company's consolidated balance sheet. The disclosures below summarize the Company's material related party transactions with CEG and its subsidiaries that are included in the Company's operating costs. O&M Services Agreements by and between the Company and Clearway Renewable Operation & Maintenance LLC Various wholly-owned subsidiaries of the Company in the Renewables segment are party to services agreements with Clearway Renewable Operation & Maintenance LLC, or RENOM, a wholly-owned subsidiary of CEG, which provides operation and maintenance, or O&M, services to these subsidiaries. The Company incurred total expenses for these services of $56 million, $37 million and $31 million for the years ended December 31, 2021, 2020 and 2019, respectively. There was a balance of $9 million and $10 million due to RENOM as of December 31, 2021 and 2020, respectively. Administrative Services Agreements by and between the Company and CEG Various wholly-owned subsidiaries of the Company are parties to services agreements with Clearway Asset Services LLC and Clearway Solar Asset Management LLC, two wholly-owned subsidiaries of CEG, which provide various administrative services to the Company's subsidiaries. The Company incurred expenses under these agreements of $14 million, $10 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively. There was a balance of $2 million due to CEG as of both December 31, 2021 and 2020. CEG Master Services Agreements The Company is a party to Master Services Agreements with CEG, or MSAs, pursuant to which CEG and certain of its affiliates or third-party service providers provide certain services to the Company, including operational and administrative services, which include human resources, information systems, external affairs, accounting, procurement and risk management services, and the Company provides certain services to CEG, including accounting, internal audit, tax and treasury services, in exchange for the payment of fees in respect of such services. The Company incurred net expenses of $4 million, $2 million and $1 million under these agreements for the years ended December 31, 2021, 2020 and 2019, respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Gas and Transportation Commitments The Company has entered into contractual arrangements to procure power, fuel and associated transportation services for the Thermal Business. For the years ended December 31, 2021, 2020 and 2019, the Company purchased $40 million, $32 million, and $38 million, respectively, under such arrangements. As of December 31, 2021, the Company's future minimum commitments under such outstanding agreements are estimated as follows: (In millions) 2022 $ 7 2023 1 2024 — 2025 — 2026 — Thereafter — Total $ 8 Contingencies The Company's material legal proceedings are described below. The Company believes that it has valid defenses to these legal proceedings and intends to defend them vigorously. The Company records reserves for estimated losses from contingencies when information available indicates that a loss is probable and the amount of the loss, or range of loss, can be reasonably estimated. As applicable, the Company has established an adequate reserve for the matters discussed below. In addition, legal costs are expensed as incurred. Management assesses such matters based on current information and makes a judgment concerning its potential outcome, considering the nature of the claim, the amount and nature of damages sought and the probability of success. The Company is unable to predict the outcome of the legal proceedings below or reasonably estimate the scope or amount of any associated costs and potential liabilities. As additional information becomes available, management adjusts its assessment and estimates of such contingencies accordingly. Because litigation is subject to inherent uncertainties and unfavorable rulings or developments, it is possible that the ultimate resolution of the Company's liabilities and contingencies could be at amounts that are different from its currently recorded reserves and that such difference could be material. In addition to the legal proceedings noted below, the Company and its subsidiaries are party to other litigation or legal proceedings arising in the ordinary course of business. In management's opinion, the disposition of these ordinary course matters will not materially adversely affect the Company's consolidated financial position, results of operations, or cash flows. Nebraska Public Power District Litigation On January 11, 2019, Nebraska Public Power District, or NPPD, sent written notice to certain of the Company's subsidiaries which own the Laredo Ridge and Elkhorn Ridge wind projects alleging an event of default under each of the PPAs between NPPD and the projects. NPPD alleges that the Company moved forward with certain transactions without obtaining the consent of NPPD. NPPD threatened to terminate the applicable PPAs by February 11, 2019 if the alleged default was not cured. The Company filed a motion for a temporary restraining order and preliminary injunction in the U.S. District Court for the District of Nebraska relating to the Laredo Ridge project, and a similar motion in the District Court of Knox County, Nebraska for the Elkhorn Ridge project, to enjoin NPPD from taking any actions related to the PPAs. On February 19, 2019, the U.S. District Court in the Laredo Ridge matter approved a stipulation between the parties to provide for an injunction preventing NPPD from terminating the PPA pending disposition of the litigation. On February 26, 2019, the Knox County District Court approved a similar stipulation relating to the Elkhorn Ridge project. On April 13, 2020, the U.S. District Court granted the wind projects' motion for summary judgment and permanently enjoined NPPD from terminating the PPAs in reliance on the alleged events of default. The U.S. District Court decision was appealed by NPPD on May 11, 2020. On August 24, 2021, the U.S. Court of Appeals for the Eighth Circuit affirmed the U.S. District Court decision granting summary judgment. On October 18, 2021, the Appeals Court denied a petition by NPPD for rehearing and a request that the case be heard by the full Appeals Court. On November 2, 2021, the Knox County District Court issued an order dismissing the case with respect to the Elkhorn Ridge project. Accordingly, the federal case and the state case are now concluded. Buckthorn Solar Litigation On October 8, 2019, the City of Georgetown, Texas, or Georgetown, filed a petition in the District Court of Williamson County, Texas naming Buckthorn Westex, LLC, the Company’s subsidiary that owns the Buckthorn Westex solar project, as the defendant, alleging fraud by nondisclosure and breach of contract in connection with the project and the PPA, and seeking (i) rescission and/or cancellation of the PPA, (ii) declaratory judgment that the alleged breaches constitute an event of default under the PPA entitling Georgetown to terminate, and (iii) recovery of all damages, costs of court, and attorneys’ fees. On November 15, 2019, Buckthorn Westex filed an original answer and counterclaims (i) denying Georgetown’s claims, (ii) alleging Georgetown has breached its contracts with Buckthorn Westex by failing to pay amounts due, and (iii) seeking relief in the form of (x) declaratory judgment that Georgetown’s alleged failure to pay amounts due constitute breaches of and an event of default under the PPA and that Buckthorn did not commit any events of default under the PPA, (y) recovery of costs, expenses, interest, and attorneys’ fees, and (z) such other relief to which it is entitled at law or in equity. Buckthorn Westex believes the allegations of Georgetown are meritless, and Buckthorn Westex is vigorously defending its rights under the PPA.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	Leases Accounting for Leases The Company evaluates each arrangement at inception to determine if it contains a lease. Substantially all of the Company’s leases are operating leases. Lessee The Company records its operating lease liabilities at the present value of the lease payments over the lease term at lease commencement date. Lease payments include fixed payment amounts as well as variable rate payments based on an index initially measured at lease commencement date. Variable payments, including payments based on future performance and based on index changes, are recorded as the expense is incurred. The Company determines the relevant lease term by evaluating whether renewal and termination options are reasonably certain to be exercised. The Company uses its incremental borrowing rate to calculate the present value of the lease payments, based on information available at the lease commencement date. The Company’s leases consist of land leases for numerous operating asset locations, real estate leases and equipment leases. The terms and conditions for these leases vary by the type of underlying asset. Lease expense for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: (In millions) December 31, 2021 December 31, 2020 December 31, 2019 Operating lease cost - Fixed $ 27 $ 19 $ 13 Operating lease cost - Variable 15 9 8 Total lease cost $ 42 $ 28 $ 21 Operating lease information as of December 31, 2021 and 2020 was as follows: (In millions, except term and rate) December 31, 2021 December 31, 2020 Right-of-use assets - operating leases, net (a) (b) $ 550 $ 337 Short-term lease liability - operating leases (c) $ 8 $ 8 Long-term lease liability - operating leases 561 345 Total lease liabilities (a) (b) $ 569 $ 353 Weighted average remaining lease term (in years) 28 25 Weighted average discount rate 3.5 % 4.3 % Cash paid for operating leases $ 26 $ 19 (a) Increases in right-of-use assets and total lease liabilities are primarily due to third-party and drop down asset acquisitions, as further described in Note 3, Acquisitions and Dispositions . (b) Thermal Business right-of-use assets and lease liabilities were reclassified to held for sale during the fourth quarter of 2021. (c) Short-term lease liability balances are included within the accrued expenses and other current liabilities Minimum future rental payments of operating lease liabilities as of December 31, 2021 are as follows: (In millions) 2022 $ 28 2023 28 2024 28 2025 28 2026 29 Thereafter 801 Total lease payments (a) 942 Less imputed interest (352) Total lease liability - operating leases $ 590 (a) Minimum future rental payments of the Thermal Business operating lease liabilities classified as held for sale are $1 million for each of 2022, 2023, 2024, 2025 and 2026, with $31 million due thereafter. Oahu Solar Lease Agreements The Oahu Solar projects are party to various land lease agreements with a wholly-owned subsidiary of CEG. The projects are leasing the land for a period of 35 years, with the ability to renew the lease for two additional five-year periods. The Company has a lease liability of $20 million as of both December 31, 2021 and 2020 and corresponding right-of-use asset of $18 million related to the lease as of both December 31, 2021 and 2020. Rosamond Lease Agreement The Rosamond Central project is party to a land lease agreement with a wholly-owned subsidiary of CEG. The project is leasing the land for a period of 35 years, with the ability to renew the lease for two additional five-year periods. The Company has a lease liability of $12 million as of both December 31, 2021 and 2020 and corresponding right-of-use asset of $11 million related to the lease as of both December 31, 2021 and 2020. Lessor The majority of the Company’s revenue is obtained through PPAs or other contractual agreements that are accounted for as leases. These leases are comprised of both fixed payments and variable payments contingent upon volumes or performance metrics. The terms of the leases are further described in Item 2 — Properties of this Form 10-K. Many of the leases have renewal options at the end of the lease term. Termination may be allowed under specific circumstances in the lease arrangements, such as under an event of default. All but one of the Company’s leases are operating leases. The remaining lease met the criteria of a s ales-type lease and the impact of this sales-type lease to the consolidated financial statements was immaterial. Certain of these leases have both lease and non-lease components, and the Company allocates the transaction price to the components based on standalone selling prices. The following amounts of energy and capacity revenue are related to the Company’s operating leases: Conventional Generation Renewables Thermal Total December 31, 2021 (In millions) Energy revenue $ 9 $ 716 $ 2 $ 727 Capacity revenue 455 — — 455 Operating revenue $ 464 $ 716 $ 2 $ 1,182 Conventional Generation Renewables Thermal Total December 31, 2020 (In millions) Energy revenue $ 10 $ 554 $ 2 $ 566 Capacity revenue 451 — — 451 Operating revenue $ 461 $ 554 $ 2 $ 1,017 Conventional Generation Renewables Thermal Total December 31, 2019 (In millions) Energy revenue $ 5 $ 509 $ 2 $ 516 Capacity revenue 348 — — 348 Operating revenue $ 353 $ 509 $ 2 $ 864 Minimum future rent payments for the remaining periods related to the Conventional segment operating leases as of December 31, 2021 were as follows: (In millions) 2022 $ 453 2023 261 2024 106 2025 107 2026 108 Thereafter 1,390 Total lease payments $ 2,425 Property, plant and equipment, net related to the Company’s operating leases were as follows: (In millions) December 31, 2021 December 31, 2020 Property, plant and equipment $ 8,981 $ 7,201 Accumulated depreciation (2,827) (1,964) Net property, plant and equipment $ 6,154 $ 5,237

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information of Registrant	Clearway Energy LLC (Parent) Condensed Financial Information of Registrant Condensed Statements of Operations Year ended December 31, (In millions) 2021 2020 2019 Equity in earnings (losses) of consolidated affiliates $ 110 $ 61 $ (32) Other income, net — — 2 Total other income, net — — 2 Net Income (Loss) Attributable to Clearway Energy LLC $ 110 $ 61 $ (30) Clearway Energy LLC (Parent) Condensed Balance Sheets December 31, December 31, 2021 2020 ASSETS (In millions) Current Assets Cash and cash equivalents $ 33 $ 119 Investment in consolidated subsidiaries 1,497 1,545 Total Assets $ 1,530 $ 1,664 LIABILITIES AND MEMBERS' EQUITY Current Liabilities Accounts payable — affiliates $ 5 $ 24 Total Liabilities 5 24 Commitments and Contingencies Members' Equity Contributed capital 1,495 1,723 Retained earnings (Accumulated deficit) 43 (50) Accumulated other comprehensive loss (13) (33) Total Members' Equity 1,525 1,640 Total Liabilities and Members’ Equity $ 1,530 $ 1,664 Clearway Energy LLC (Parent) Condensed Statements of Cash Flows Years ended December 31, 2021 2020 2019 (In millions) Cash Flows from Operating Activities Net Cash Provided by Operating Activities $ — $ — $ — Cash Flows from Investing Activities Investments in consolidated affiliates 202 306 (211) Net Cash Provided by (Used in) Investing Activities 202 306 (211) Cash Flows from Financing Activities Transfer of funds under intercompany cash management arrangement (20) (65) (5) Proceeds from issuance of Class C units — 62 100 Payments of distributions (268) (211) (155) Net Cash Used in Financing Activities (288) (214) (60) Net (Decrease) Increase in Cash and Cash Equivalents (86) 92 (271) Cash and Cash Equivalents at Beginning of Period 119 27 298 Cash and Cash Equivalents at End of Period $ 33 $ 119 $ 27 Background Clearway Energy LLC, together with its consolidated subsidiaries, or the Company, is an energy infrastructure investor in and owner of modern, sustainable and long-term contracted assets across North America. The Company is sponsored by GIP through its portfolio company, CEG. GIP is an independent infrastructure fund manager that makes equity and debt investments in infrastructure assets and businesses. The Company is one of the largest renewable energy owners in the U.S. with over 5,000 net MW of installed wind and solar generation projects. The Company's over 9,000 net MW of assets includes approximately 2,500 net MW of environmentally-sound, highly efficient natural gas-fired generation facilities as well as the Thermal Business. Through this environmentally-sound, diversified and primarily contracted portfolio, the Company endeavors to increase distributions to its unit holders. Substantially all of the Company's generation assets are under long-term contractual arrangements for the output or capacity from these assets. Clearway Energy, Inc., or Clearway, Inc., consolidates the results of Clearway Energy LLC through its controlling interest, with CEG's interest shown as noncontrolling interest in the financial statements. The holders of Clearway, Inc.'s outstanding shares of Class A and Class C common stock are entitled to dividends as declared. CEG receives its distributions from Clearway Energy LLC through its ownership of Clearway Energy LLC Class B and Class D units. As of December 31, 2021, Clearway, Inc. owned 57.65% of the economic interests of the Company, with CEG owning 42.35% of the economic interests of the Company. For further discussion, see Note 11, Members' Equity. Basis of Presentation The condensed parent-only company financial statements have been prepared in accordance with Rule 12-04 of Regulation S-X, as the restricted net assets of Clearway Energy LLC's subsidiaries exceed 25% of the consolidated net assets of Clearway Energy LLC. The parent's 100% investment in its subsidiaries has been recorded using the equity basis of accounting in the accompanying condensed parent-only financial statements. These statements should be read in conjunction with the consolidated financial statements and notes thereto of Clearway Energy LLC. Note 2 — Long-Term Debt For a discussion of Clearway Energy LLC’s financing arrangements, see Note 10, Long-term Debt, to the Company's consolidated financial statements. Note 3 — Commitments, Contingencies and Guarantees See Note 14, Commitments and Contingencies, to the Company's consolidated financial statements for a detailed discussion of Clearway Energy LLC’s commitments and contingencies. Note 4 — Distributions

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	The Company's consolidated financial statements have been prepared in accordance with GAAP. The FASB ASC is the source of authoritative 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 GAAP for SEC registrants.
Principles of Consolidation	The consolidated 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,
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.
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.
Accounts Receivable - Trade and Allowance for Doubtful Accounts	Accounts Receivable — Trade and Allowance for Credit LossesAccounts receivable — trade are reported on the consolidated balance sheet at the invoiced amount adjusted for any write-offs and the allowance for credit losses. The allowance for credit losses is reviewed periodically based on amounts past due and significance. The allowance for credit losses
Inventory	Inventory Inventory consists principally of spare parts and fuel oil. Spare parts inventory is valued at weighted average cost, unless evidence indicates that the weighted average cost will not be recovered with a normal profit in the ordinary course of business. Fuel oil inventory is valued at the lower of weighted average cost or market. The Company removes fuel inventories as they are used in the production of steam, chilled water or electricity. Spare parts inventory is removed when used for repairs, maintenance or capital projects.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost; however impairment adjustments are recorded whenever events or changes in circumstances indicate that their carrying values may not be recoverable. 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. For further discussion of the Company's property, plant and equipment refer to Note 4, Property, Plant and Equipment . Construction in-progress represents cumulative construction costs, including the costs incurred for the purchase of major equipment and engineering costs and capitalized interest. Once the project achieves commercial operation, the Company reclassifies the amounts recorded in construction in progress to facilities and equipment. Development costs include project development costs, which are expensed in the preliminary stages of a project and capitalized when the project is deemed to be commercially viable. Commercial viability is determined by one or a series of actions including, among others, Board of Director approval pursuant to a formal project plan that subjects the Company to significant future obligations that can only be discharged by the use of a Company asset. When a project is available for operations, capitalized interest and capitalized project development costs are reclassified to property, plant and equipment and depreciated on a straight-line basis over the estimated useful life of the project's related assets. Capitalized costs are charged to expense if a project is abandoned or management otherwise determines the costs to be unrecoverable.
Asset Impairments	Asset Impairments Long-lived assets that are held and used are reviewed for impairment whenever events or changes in circumstances indicate their carrying values may not be recoverable. Such reviews are performed in accordance with ASC 360, Property, Plant and Equipment . An impairment loss is indicated if the total future estimated undiscounted cash flows expected from an asset are less than its carrying value. An impairment charge is measured as the excess of an asset's carrying amount over its fair value with the difference recorded in operating costs and expenses in the consolidated statements of operations. Fair values are determined by a variety of valuation methods, including appraisals, sales prices of similar assets and present value techniques. For further discussion of the Company's long-lived asset impairments, refer to Note 9, Asset Impairments . 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 an other-than-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.
Debt Issuance Costs	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. Debt issuance costs related to the long-term debt are presented as a direct deduction from the carrying amount of the related debt. Debt issuance costs related to the senior secured revolving credit facility line of credit are recorded as a non-current asset on the consolidated balance sheet and are amortized over the term of the credit facility.
Intangible Assets	Intangible AssetsIntangible assets represent contractual rights held by the Company. The Company recognizes specifically identifiable intangible assets including power purchase agreements, leasehold rights, customer relationships, customer contracts, emission allowances, RECs and development rights when specific rights and contracts are acquired. These intangible assets are amortized primarily on a straight-line basis.
Income Taxes	Income Taxes The Company is classified as a partnership for federal and state income tax purposes. Therefore, federal and most state income taxes are assessed at the partner level. The franchise tax imposed by the state of Texas, however, is being assessed at the level of certain project subsidiaries of the Company, and therefore reflected as an income tax expense of the Company. For the year ended December 31, 2021, the Company recorded a deferred tax expense and associated deferred tax liability of $2 million with respect to future years. At December 31, 2021, the Company had no current tax liability.
Revenue Recognition and Contract Amortization	Revenue Recognition Revenue from Contracts with Customers The Company applies the guidance in ASC 606, Revenue from Contracts with Customers, or Topic 606, when recognizing revenue associated with its contracts with customers. The Company's policies with respect to its various revenue streams are detailed below. In general, the Company applies the invoicing practical expedient to recognize revenue for the revenue streams detailed below, except in circumstances where the invoiced amount does not represent the value transferred to the customer. Thermal Revenues Steam and chilled water revenue is recognized as the Company transfers the product to the customer, 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. For thermal contracts, the Company’s performance obligation to deliver steam and chilled water is satisfied over time and revenue is recognized based on the invoiced amount. 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 consolidated statements of operations. As contracts for steam and chilled water are long-term contracts, the Company has performance obligations under these contracts that have not yet been satisfied. These performance obligations have transaction prices that are both fixed and variable, and that vary based on the contract duration, customer type, inception date and other contract-specific factors. For the fixed price contracts, the Company cannot accurately estimate the amount of its unsatisfied performance obligations as it will vary based on customer usage, which will depend on factors such as weather and customer activity. On October 22, 2021, Clearway Energy Operating LLC entered into a binding agreement to sell the Thermal Business to KKR. For further details of the Thermal Disposition, refer to Note 3, Acquisitions and Dispositions . Power Purchase Agreements, or PPAs The majority of the Company’s revenues are obtained through PPAs or similar contractual agreements. Energy, capacity and, where applicable, renewable attributes, from the majority of the Company’s renewable energy assets and certain conventional energy plants is sold through long-term PPAs and tolling agreements to a single counterparty, which is often a utility or commercial customer. The majority of these PPAs are accounted for as operating leases as the Company retained its historical lease assessments and classification upon adoption of ASC 842, Leases . ASC 842 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 lease revenue derived from these leases is recorded as contingent rent on an actual basis when the electricity is delivered. The contingent lease revenue recognized in the years ended December 31, 2021, 2020 and 2019 was $741 million, $589 million and $537 million, respectively. See Note 15, Leases for additional information related to the Company's PPAs accounted for as leases. Renewable Energy Credits, or RECs As stated above, renewable energy credits, or RECs, are usually sold through long-term PPAs or through REC contracts with counterparties. Revenue from the sale of self-generated RECs is recognized when the related energy is generated and simultaneously delivered even in cases where there is a certification lag as it has been deemed to be perfunctory. In a bundled contract to sell energy, capacity and/or self-generated RECs, all performance obligations are deemed to be delivered at the same time and hence, timing of recognition of revenue for all performance obligations is the same and occurs over time. In such cases, it is often unnecessary to allocate transaction price to multiple performance obligations. Contract Amortization Assets and liabilities recognized from power sales agreements assumed through acquisitions relating to the sale of electric capacity and energy in future periods arising from differences in contract and market prices are amortized to revenue over the term of each underlying contract based on actual generation and/or contracted volumes or on a straight-line basis, where applicable.
Derivatives Financial Instruments	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 interest rate instruments used to mitigate variability in earnings due to fluctuations in interest rates, power purchase or sale contracts used to mitigate variability in earnings due to fluctuations in market prices and commodity purchase contracts used to control customer reimbursable fuel cost. On an ongoing basis, the Company qualitatively assesses the effectiveness of its 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 cash flows of hedged items. If necessary, the Company will perform an analysis to measure the statistical correlation between the derivative and the associated hedged item to determine the effectiveness of such a contract designated as a hedge. The Company will discontinue hedge accounting if it is determined that the hedge is no longer effective. 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 accumulated 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	Concentrations of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of accounts receivable — trade and derivative instruments, which are concentrated within entities engaged in the energy and financial industries. 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. See Item 1A, Risk Factors, Risks related to the Company's Business, for a discussion on the Company’s dependence on major customers .
Fair Value of Financial Instruments	Fair Value of Financial InstrumentsThe carrying amount of cash and cash equivalents, restricted cash, accounts receivable — trade, accounts payable — trade, account payable — affiliate and accrued expenses and other current liabilities approximate fair value because of the short-term maturity of these instruments.
Asset Retirement Obligations	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.
Guarantees	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 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, the Company 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 Investments	Investments Accounted for by the Equity Method The Company has investments in various energy projects accounted for by the equity method, several of which are VIEs, where the Company is not a primary beneficiary, 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. Distributions from equity method investments that represent earnings on the Company's investment are included within cash flows from operating activities and distributions from equity method investments that represent a return of the Company's investment are included within cash flows from investing activities.
Sale Leaseback Arrangements	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	Business and Asset Acquisitions The Company accounts for its acquisitions in accordance with ASC 805, Business Combinations, or ASC 805. For third- party acquisitions, 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, for business combinations, transaction costs are expensed as incurred. For asset acquisitions, identifiable assets acquired and liabilities assumed are recorded at acquisition date fair value. No goodwill is recognized and excess purchase price or negative goodwill are allocated to the acquired assets on a relative fair value basis. For acquisitions that relate to entities under common control, ASC 805 requires retrospective combination of the entities for all annual periods presented as if the combination has been in effect from the beginning of the earliest financial statement period presented or from the date the entities were under common control (if later than the beginning of the earliest financial statement period). The difference between the cash paid and historical value of the entities' equity is recorded as a distribution/contribution from/to CEG with the offset to noncontrolling interest.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions. These estimates and assumptions impact the reported amounts 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 amounts of net earnings during the reporting periods. 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, AROs, acquisition accounting and legal costs incurred in connection with recorded loss contingencies, among others. In addition, estimates are used to test long-lived assets for impairment and to determine the fair value of impaired assets. 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	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 solar and 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 solar energy systems, under operating leases or PPAs, that are 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 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. In addition, in certain circumstances, the Company and its partners in the tax equity arrangements agree that certain tax benefits are to be utilized outside of the tax equity arrangements, which may result in differences in the amount an investor would hypothetically receive at the initial balance sheet date calculated strictly in accordance with related contractual agreements. These differences are recognized in the consolidated statement of operations using a systematic and rational method over the period during which the investor is expected to achieve its target return.
Reclassification	Reclassification Certain prior year amounts have been reclassified for comparative purposes.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In March 2020, the FASB issued ASU No. 2020-4, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide for optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. These amendments apply only to contracts that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform, which affects certain of the Company's debt and interest rate swap agreements. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. As of December 31, 2021, the Company has applied the amendments to all its eligible contract modifications, where applicable, during the reference rate reform period. Additionally, the Company has not elected any optional expedients provided in the standard.

Nature of Business (Tables)

Nature of Business (Tables)	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company Organization Chart	The following table represents the structure of the Company as of December 31, 2021:

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows: Year ended December 31, 2021 2020 (In millions) Cash and cash equivalents $ 179 $ 268 Restricted cash 475 197 Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 654 $ 465
Restrictions on Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows: Year ended December 31, 2021 2020 (In millions) Cash and cash equivalents $ 179 $ 268 Restricted cash 475 197 Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 654 $ 465
Disaggregation of Revenue	The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2021, along with the reportable segment for each category: Year ended December 31, 2021 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 9 $ 784 $ 122 $ 915 Capacity revenue (a) 455 2 53 510 Other revenues — 60 32 92 Contract amortization (23) (118) (3) (144) Mark-to-market for economic hedges — (87) — (87) Total operating revenue 441 641 204 1,286 Less: Lease revenue (464) (716) (2) (1,182) Less: Contract amortization 23 118 3 144 Total revenue from contracts with customers $ — $ 43 $ 205 $ 248 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842. The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2020, along with the reportable segment for each category: Year ended December 31, 2020 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 10 $ 609 $ 101 $ 720 Capacity revenue (a) 451 — 63 514 Other revenues — 21 32 53 Contract amortization (24) (61) (3) (88) Total operating revenue 437 569 193 1,199 Less: Lease revenue (461) (554) (2) (1,017) Less: Contract amortization 24 61 3 88 Total revenue from contracts with customers $ — $ 76 $ 194 $ 270 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842. The following tables represent the Company’s disaggregation of revenue from contracts with customers for the year ended December 31, 2019, along with the reportable segment for each category: Year ended December 31, 2019 (In millions) Conventional Generation Renewables Thermal Total Energy revenue (a) $ 5 $ 545 $ 120 $ 670 Capacity revenue (a) 348 — 54 402 Other revenues — 10 30 40 Contract amortization (7) (61) (3) (71) Mark-to-market for economic hedges — (9) — (9) Total operating revenue 346 485 201 1,032 Less: Lease revenue (353) (509) (2) (864) Less: Contract amortization 7 61 3 71 Total revenue from contracts with customers $ — $ 37 $ 202 $ 239 (a) See Note 15 , Leases, for the amounts of energy and capacity revenue that relate to leases and are accounted for under ASC 842.
Schedule of Contract Balances	The following table reflects the net amount of contract assets and liabilities included on the Company’s consolidated balance sheets as of December 31, 2021 and December 31, 2020: (In millions) December 31, 2021 December 31, 2020 Accounts receivable, net - Contracts with customers $ 44 $ 57 Accounts receivable, net - Leases 100 86 Total accounts receivable, net $ 144 $ 143
Schedule of Change in Asset Retirement Obligation	The following table represents the balance of ARO obligations as of December 31, 2021 and 2020, along with the additions and accretion related to the Company's ARO obligations for the year ended December 31, 2021: (In millions) Balance as of December 31, 2020 $ 117 Thermal Business AROs reclassified to held for sale (1) Revisions in estimates for current obligations 2 Additions 19 Accretion — expense 9 Balance as of December 31, 2021 $ 146

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	12 Months Ended
	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 29, 2021: (In millions) Black Rock Current assets (a) $ 36 Property, plant and equipment 178 Right-of-use-assets 7 Other non-current assets 2 Total assets acquired 223 Long-term debt (b) 186 Long-term lease liabilities 7 Other current and non-current liabilities 11 Total liabilities assumed (c) 204 Net assets acquired $ 19 (a) Includes $35 million reserved for project completion costs included in restricted cash on the Company's balance sheet at acquisition date, which is included within the $133 million contributed by CEG described above. (b) Repaid at acquisition date utilizing $56 million contributed by the tax equity investor, $36 million from the cash equity investor and $61 million contributed by CEG, all recorded as contributions in noncontrolling interest, as well as $37 million of the Company's acquisition price. Of the $190 million contributed, $186 million was utilized to pay down the acquired debt and $4 million was utilized to pay associated fees. The $61 million contributed by CEG and the Company’s initial acquisition price of $37 million are also included within the $133 million contributed by CEG described above. (c) Total liabilities assumed excludes amounts due to CEG as of December 31, 2021 for the remaining turbines that became operational in January 2022. The liabilities totaled $83 million, of which $59 million was received from the tax equity and cash equity investors and was held in escrow accounts as of December 31, 2021. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 17, 2021: (In millions) Mesquite Sky Current assets (a) $ 46 Property, plant and equipment 377 Right-of use assets 45 Other non-current assets 7 Total assets acquired 475 Long-term debt (b) 355 Long-term lease liabilities 45 Derivative liabilities 43 Other current and non-current liabilities 39 Total liabilities assumed (c) 482 Net liabilities assumed $ (7) (a) Includes $44 million reserved for project completion costs included in restricted cash on the Company's balance sheet at acquisition date, which is included within the $52 million contributed by CEG described above. (b) Repaid at acquisition date utilizing $241 million contributed by the tax equity investor and $107 million contributed by the cash equity investor, both recorded as contributions in noncontrolling interest, as well as the Company's $61 million acquisition price. Of the $409 million contributed, $355 million was utilized to pay down the acquired debt and $1 million was utilized to pay associated fees. The remaining $53 million was distributed to CEG for the acquisition. The net of the Company’s $61 million acquisition price and the distribution to CEG of $53 million are included within the $52 million contributed by CEG described above. (c) Total liabilities assumed excludes amounts due to CEG as of December 31, 2021 of $6 million, of which $5 million was received from the tax equity and cash equity investors and was held in escrow accounts as of December 31, 2021. The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 1, 2021: (In millions) Utah Solar Portfolio Current assets $ 20 Property, plant and equipment 258 Intangible assets for power purchase agreement 302 Other intangible assets 4 Right-of use assets 163 Total assets acquired 747 Long-term lease liabilities 163 Other current and non-current liabilities 24 Total liabilities assumed 187 Equity method investment removed (230) Net assets acquired $ 330 (In millions) Mt. Storm Current assets $ 3 Property, plant and equipment 108 Other non-current assets 2 Total assets acquired 113 Derivative instruments 9 Other current and non-current liabilities 4 Total liabilities assumed 13 Net assets acquired $ 100 The following is a summary of assets and liabilities obtained in connection with the acquisition as of February 3, 2021: (In millions) Agua Caliente Restricted cash $ 91 Property, plant and equipment 154 Intangible asset for power purchase agreement 1,022 Other current assets 9 Total assets acquired 1,276 Long-term debt 716 Other current and non-current liabilities 5 Total liabilities assumed 721 Noncontrolling interest 273 Equity method investment removed (80) Net assets acquired less noncontrolling interest $ 202 The following is a summary of assets and liabilities transferred in connection with the acquisition as of January 12, 2021: (In millions) Rattlesnake Current assets $ 8 Property, plant and equipment 200 Right-of-use assets 12 Total assets acquired 220 Long-term debt (a) 176 Long-term lease liabilities 12 Other current and non-current liabilities 18 Total liabilities assumed 206 Net assets acquired $ 14 (a) Repaid at acquisition date utilizing $107 million contributed by tax equity investor and $103 million contributed by CEG, both recorded as contributions in noncontrolling interest. Of the $210 million contributed, $176 million was utilized to pay down the acquired debt, $29 million was utilized to fund project reserve accounts and $5 million was utilized to pay associated fees. The following is a summary of assets and liabilities transferred in connection with the acquisition as of November 20, 2020: (In millions) Langford Current assets $ 4 Property, plant and equipment 138 Other non-current assets 15 Total assets acquired 157 Other current and non-current liabilities 17 Total liabilities assumed 17 Noncontrolling interests 119 Net assets acquired less noncontrolling interests $ 21 The following is a summary of assets and liabilities transferred in connection with the acquisition as of December 21, 2020: (In millions) Rosamond Central Current assets $ 49 Property, plant and equipment 246 Other non-current assets 1 Total assets acquired 296 Long-term debt 205 Other current and non-current liabilities 11 Total liabilities assumed 216 Noncontrolling interests 52 Net assets acquired less noncontrolling interests $ 28 The following table shows the balances that were consolidated effective on December 21, 2020: (In millions) Mesquite Star Current assets $ 22 Property, plant and equipment 443 Other non-current assets 31 Total assets acquired 496 Other current and non-current liabilities 87 Total liabilities assumed 87 Noncontrolling interests and redeemable noncontrolling interests 346 Net assets acquired less noncontrolling interests $ 63 The following table shows the balances that were consolidated: November 2, 2020 May 29, 2020 (In millions) DGPV Holdco 1 and 2 (a) DGPV Holdco 3 (b) Current assets $ 29 $ 32 Property, plant and equipment, net 324 331 Intangible assets, net 19 1 Other non-current assets 52 37 Total assets acquired 424 401 Long-term debt 160 206 Other current and non-current liabilities 54 84 Total liabilities assumed 214 290 Noncontrolling interests and redeemable noncontrolling interests 5 6 Net assets acquired less noncontrolling interests $ 205 $ 105 (a) Includes DGPV 1, LLC, DGPV 2, LLC, CA Fund, LLC, DGPV 4 Borrower LLC and Puma Class B LLC (b) Includes Renew Solar CS4 Fund LLC and Chestnut Fund LLC

Investments Accounted for by _2

Investments Accounted for by the Equity Method and Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity method investments	Name Economic Interest Investment Balance (In millions) Avenal 50% $ 4 Desert Sunlight 25% 239 Elkhorn Ridge 66.7% 29 GenConn (a) 50% 86 San Juan Mesa 75% 23 $ 381 (a) GenConn is a variable interest entity. The following tables present summarized financial information for the Company's equity method investments: Year Ended December 31, 2021 2020 2019 Income Statement Data: (In millions) GenConn Operating revenues $ 55 $ 60 $ 60 Operating income 22 26 27 Net income 13 17 17 Desert Sunlight Operating revenues 205 209 205 Operating income 146 142 123 Net income 112 88 58 Other (a) (b) Operating revenues 49 299 318 Operating income 16 138 110 Net income $ 13 $ 60 $ 50 As of December 31, 2021 2020 Balance Sheet Data: (In millions) GenConn Current assets $ 38 $ 40 Non-current assets 328 344 Current liabilities 15 17 Non-current liabilities 178 185 Desert Sunlight Current assets 131 132 Non-current assets 1,228 1,244 Current liabilities 64 71 Non-current liabilities 904 921 Other (a) (b) Current assets 26 177 Non-current assets 172 2,201 Current liabilities 24 114 Non-current liabilities 98 700 (a) Includes Avenal, Elkhorn Ridge, San Juan Mesa, DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3. DGPV Holdco 1, DGPV Holdco 2 and DGPV Holdco 3 were consolidated by the Company during 2020 and are therefore excluded from the summarized balance sheet data as of December 31, 2020. (b) On February 3, 2021, the Company acquired an additional 35% equity interest in Agua Caliente and removed its equity investment in Agua Caliente and, on December 1, 2021, the Company acquired the remaining 50% equity investment in the Utah Solar Portfolio and removed its equity investment in the Utah Solar Portfolio. As a result, both Agua Caliente and the Utah Solar Portfolio are excluded from the summarized balance sheet data as of December 31, 2021 and from the summarized income statement data for the year ended December 31, 2021.
Schedule of variable interest entities	Summarized financial information for the Company's consolidated VIEs consisted of the following as of December 31, 2021: (In millions) Alta TE Holdco Buckthorn Renewables, LLC DGPV Funds (a) Kawailoa Partnership Langford TE Partnership LLC Lighthouse Renewable Holdco LLC (b) Lighthouse Renewable Holdco 2 LLC (c) Other current and non-current assets $ 53 $ 4 $ 104 $ 40 $ 17 $ 84 $ 83 Property, plant and equipment 331 202 592 135 132 605 377 Intangible assets 212 — 16 — 2 — — Total assets 596 206 712 175 151 689 460 Current and non-current liabilities 40 10 76 103 18 150 118 Total liabilities 40 10 76 103 18 150 118 Noncontrolling interest 13 44 6 48 66 416 239 Net assets less noncontrolling interests $ 543 $ 152 $ 630 $ 24 $ 67 $ 123 $ 103 (a) DGPV Funds is comprised of DGPV Fund 2 LLC, Clearway & EFS Distributed Solar LLC, DGPV Fund 4 LLC, Golden Puma Fund LLC, Renew Solar CS4 Fund LLC and Chestnut Fund LLC. (b) Lighthouse Renewable Holdco LLC consolidates Mesquite Star Tax Equity Holdco LLC and Black Rock TE Holdco LLC, which are also consolidated VIEs. (c) Lighthouse Renewable Holdco 2 LLC consolidates Mesquite Sky TE Holdco LLC, which is also a consolidated VIE. (In millions) Oahu Pinnacle Repowering Partnership LLC Rattlesnake TE Holdco LLC Rosie Target Co LLC Wildorado TE Holdco Other(a) Other current and non-current assets $ 47 $ 12 $ 30 $ 26 $ 21 $ 16 Property, plant and equipment 172 108 194 251 225 168 Intangible assets — 18 — — — 1 Total assets 219 138 224 277 246 185 Current and non-current liabilities 114 6 23 100 18 44 Total liabilities 114 6 23 100 18 44 Noncontrolling interest 31 78 98 140 121 84 Net assets less noncontrolling interests $ 74 $ 54 $ 103 $ 37 $ 107 $ 57 (a) Other is comprised of Crosswind Transmission, LLC, Hardin Hilltop Wind LLC, Elbow Creek TE Holdco and Spring Canyon TE Holdco projects.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021 December 31, 2020 Depreciable Lives (In millions) Facilities and equipment $ 9,747 $ 9,254 2 - 40 Years Land and improvements 320 224 Construction in progress (a) 84 62 Total property, plant and equipment 10,151 9,540 Accumulated depreciation (2,501) (2,323) Net property, plant and equipment $ 7,650 $ 7,217 (a) As of December 31, 2021 and 2020, construction in progress includes $17 million and $14 million, respectively, of capital expenditures that relate to prepaid long-term service agreements in the Conventional segment.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping	The carrying amounts and estimated fair values of the Company’s recorded financial instruments not carried at fair market value or that do not approximate fair value are as follows: As of December 31, 2021 As of December 31, 2020 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Liabilities: Long-term debt, including current portion — affiliate $ 1 $ 1 $ 1 $ 1 Long-term debt, including current portion — external (a) 7,782 7,997 7,048 7,020 (a) Excludes net debt issuance costs, which are recorded as a reduction to long-term debt on the Company's consolidated balance sheets.
Fair Value Hierarchy of Long-term Debt	The following table presents the level within the fair value hierarchy for long-term debt, including current portion as of December 31, 2021 and 2020: As of December 31, 2021 As of December 31, 2020 Level 2 Level 3 Level 2 Level 3 (In millions) Long-term debt, including current portion $ 2,160 $ 5,838 $ 1,906 $ 5,115
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	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, 2021 As of December 31, 2020 Fair Value Fair Value (a) Fair Value Fair Value (a) (In millions) Level 2 Level 3 Level 2 Level 3 Derivative assets Interest rate contracts $ 6 $ — $ 1 $ — Other financial instruments (b) — 25 — 29 Total assets $ 6 $ 25 $ 1 $ 29 Derivative liabilities Commodity contracts $ — $ 179 $ — $ 44 Interest rate contracts 63 — 129 — Total liabilities $ 63 $ 179 $ 129 $ 44 (a) There were no derivative assets classified as Level 1 or Level 3 and no liabilities classified as Level 1 as of December 31, 2021 and December 31, 2020. (b) SREC contract acquired on November 2, 2020. The following table reconciles the beginning and ending balances for instruments that are recognized at fair value in the consolidated financial statements using significant unobservable inputs: Year ended December 31, 2021 2020 (In millions) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Beginning balance $ (15) $ (9) Total losses for the period included in earnings (93) — Contracts acquired (52) (6) Settlements 6 — Ending balance $ (154) $ (15) Change in unrealized losses included in earnings for derivatives and other financial instruments held as of December 31, $ (93) $ 1
Fair Value Measurement Inputs and Valuation Techniques	The following table quantifies the significant unobservable inputs used in developing the fair value of the Company's Level 3 positions as of December 31, 2021: December 31, 2021 Fair Value Input/Range Assets Liabilities Valuation Technique Significant Unobservable Input Low High Weighted Average (In millions) Commodity Contracts $ — $ (179) Discounted Cash Flow Forward Market Price (per MWh) $ 13.93 $ 56.06 $ 27.46 Other Financial Instruments 25 — Discounted Cash Flow Forecast annual generation levels of certain DG solar facilities 80,872 MWh 129,913 MWh 124,783 MWh The following table provides the impact on the fair value measurements to increases/(decreases) in significant unobservable inputs as of December 31, 2021: Significant Observable Input Position Change In Input Impact on Fair Value Measurement Forward Market Price Power Buy Increase/(Decrease) Higher/(Lower) Forward Market Price Power Sell Increase/(Decrease) Lower/(Higher) Forecast Generation Levels Sell Increase/(Decrease) Higher/(Lower)

Accounting for Derivative Ins_2

Accounting for Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding	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, 2021 and 2020: Total Volume December 31, 2021 December 31, 2020 Commodity Units (In millions) Natural Gas MMBtu 2 1 Power MWh (17) (8) Interest Dollars $ 1,326 $ 1,600
Schedule of Fair Value of Derivative Instruments	The following table summarizes the fair value within the derivative instrument valuation on the consolidated balance sheets: Fair Value Derivative Assets Derivative Liabilities December 31, 2021 December 31, 2020 December 31, 2021 December 31, 2020 (In millions) Derivatives Designated as Cash Flow Hedges: Interest rate contracts current $ — $ — $ 5 $ 8 Interest rate contracts long-term 2 — 3 15 Total Derivatives Designated as Cash Flow Hedges $ 2 $ — $ 8 $ 23 Derivatives Not Designated as Cash Flow Hedges: Interest rate contracts current $ — $ — $ 17 $ 25 Interest rate contracts long-term 4 1 38 81 Commodity contracts current — — 24 5 Commodity contracts long-term — — 155 39 Total Derivatives Not Designated as Cash Flow Hedges $ 4 $ 1 $ 234 $ 150 Total Derivatives $ 6 $ 1 $ 242 $ 173
Schedule of Offsetting of Derivatives	The following tables summarize the offsetting of derivatives by counterparty: Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2021 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts (In millions) Derivative liabilities $ (179) $ — $ (179) Total commodity contracts $ (179) $ — $ (179) Interest rate contracts Derivative assets $ 6 $ (5) $ 1 Derivative liabilities (63) 5 (58) Total interest rate contracts $ (57) $ — $ (57) Total derivative instruments $ (236) $ — $ (236) Gross Amounts Not Offset in the Statement of Financial Position As of December 31, 2020 Gross Amounts of Recognized Assets/Liabilities Derivative Instruments Net Amount Commodity contracts (In millions) Derivative liabilities $ (44) $ — $ (44) Total commodity contracts $ (44) $ — $ (44) Interest rate contracts Derivative assets $ 1 $ — $ 1 Derivative liabilities (129) — (129) Total interest rate contracts $ (128) $ — $ (128) Total derivative instruments $ (172) $ — $ (172)
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (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, 2021 2020 2019 (In millions) Accumulated OCL beginning balance $ (35) $ (37) $ (45) Reclassified from accumulated OCL to income due to realization of previously deferred amounts 11 11 22 Mark-to-market of cash flow hedge accounting contracts 11 (9) (14) Accumulated OCL ending balance $ (13) $ (35) $ (37) Accumulated OCL attributable to noncontrolling interests — (2) — Accumulated OCL attributable to Clearway Energy LLC $ (13) $ (33) $ (37) Losses expected to be realized from OCL during the next 12 months $ (9)
Derivative Instruments, Gain (Loss)	ains and losses related to the Company's derivatives are recorded in the consolidated statements of operations as follows: Year ended December 31, 2021 2020 2019 (In millions) Interest Rate Contracts (Mark-to-market interest expense) $ 53 $ (38) $ (65) Commodity Contracts (Mark-to-market for economic hedging activities) (a) (83) (4) (9) (a) Relates to long-term commodity contracts at Elbow Creek Wind Project LLC, or Elbow Creek, Mesquite Star, Mt. Storm and Mesquite Sky and gains or losses are recognized in operating revenues.

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of the components of the Company's intangible assets subject to amortization	The following tables summarize the components of intangible assets subject to amortization: Year ended December 31, 2021 PPAs Leasehold Rights Customer Customer Contracts Emission Allowances Other Total (In millions) January 1, 2021 $ 1,661 $ 86 $ 66 $ 15 $ 17 $ 12 $ 1,857 Acquisitions (a) 1,324 — — — — 4 1,328 Reclassified to held for sale (b) — — (66) (15) — — (81) December 31, 2021 2,985 86 — — 17 16 3,104 Less accumulated amortization (566) (30) — — (3) (6) (605) Net carrying amount $ 2,419 $ 56 $ — $ — $ 14 $ 10 $ 2,499 (a) The weighted average life of acquired intangibles was 17 years for PPAs, 15 years for RECs and 15 years for favorable leases. (b) Thermal Business intangible assets were reclassified to held for sale during the fourth quarter of 2021. Year ended December 31, 2020 PPAs Leasehold Rights Customer Relationships Customer Contracts Emission Other Total (In millions) January 1, 2020 $ 1,630 $ 86 $ 66 $ 15 $ 17 $ 8 $ 1,822 Consolidation of DGPV Holdco Entities 23 — — — — — 23 Other 8 — — — — 4 12 December 31, 2020 1,661 86 66 15 17 12 1,857 Less accumulated amortization (431) (26) (11) (11) (3) (5) (487) Net carrying amount $ 1,230 $ 60 $ 55 $ 4 $ 14 $ 7 $ 1,370
Schedule future amortization expense for intangibles	The Company estimates the future amortization expense for its intangibles for the next five years as follows: (In millions) 2022 $ 158 2023 155 2024 153 2025 153 2026 153

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of long-term debt	The Company's borrowings, including short-term and long-term portions consisted of the following: December 31, 2021 December 31, 2020 Interest rate % (a) Letters of Credit Outstanding at December 31, 2021 (In millions, except rates) Intercompany Note with Clearway Energy, Inc. $ 1 $ 1 1.490 2025 Senior Notes — 600 5.750 2026 Senior Notes — 350 5.000 2028 Senior Notes 850 850 4.750 2031 Senior Notes 925 — 3.750 2032 Senior Notes 350 — 3.750 Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 (b) 245 — 1.750 $ 83 Bridge Loan, due 2022 (c) 335 — S+1.000 Project-level debt: Agua Caliente Solar LLC, due 2037 684 — 2.395 - 3.633 45 Alta Wind Asset Management LLC, due 2031 13 14 L+2.625 — Alta Wind I-V lease financing arrangements, due 2034 and 2035 756 800 5.696 - 7.015 34 Alta Wind Realty Investments LLC, due 2031 24 25 7.000 — Borrego, due 2024 and 2038 54 57 Various — Buckthorn Solar, due 2025 123 126 L+1.750 21 Carlsbad Energy Holdings LLC, due 2027 136 156 L+1.625 62 Carlsbad Energy Holdings LLC, due 2038 407 407 4.120 — Carlsbad Holdco, due 2038 205 210 4.210 6 CVSR, due 2037 652 675 2.339 - 3.775 — CVSR Holdco Notes, due 2037 169 176 4.680 13 DG-CS Master Borrower LLC, due 2040 441 467 3.510 30 Duquesne, due 2059 (d) — 95 4.620 — El Segundo Energy Center, due 2023 193 250 L+1.875 - L+2.500 138 Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037 (d) — 327 Various — Kawailoa Solar Portfolio LLC, due 2026 78 81 L+1.375 14 Laredo Ridge, due 2028 72 78 L+2.125 3 Marsh Landing, due 2023 84 146 L+2.375 46 NIMH Solar, due 2024 176 191 L+2.000 10 Oahu Solar Holdings LLC, due 2026 86 89 L+1.375 10 Rosie Class B LLC, due 2027 78 80 L+1.750 17 Tapestry, due 2031 85 143 L+1.375 12 Utah Solar Holdings, due 2036 273 290 3.590 10 Walnut Creek, due 2023 74 126 L+1.750 116 WCEP Holdings, LLC, due 2023 30 35 L+3.000 — Other 180 199 Various 201 Subtotal project-level debt 5,073 5,243 Total debt 7,779 7,044 Less current maturities (773) (385) Less net debt issuance costs (71) (79) Add premiums (e) 4 5 Total long-term debt $ 6,939 $ 6,585 (a) As of December 31, 2021, L+ equals 3 month LIBOR plus x%, except Clearway Energy Operating LLC Revolving Credit Facility, due 2023, Marsh Landing, due 2023, and Walnut Creek, due 2023, where L+ equals 1 month LIBOR plus x% (b) Applicable rate is determined by the borrower leverage ratio, as defined in the credit agreement (c) S+ equals SOFR, plus x% (d) Thermal Business long-term debt reclassified to held for sale in the fourth quarter of 2021 (e) Premiums relate to the 2028 Senior Notes
Summary of swaps related to the Company's project level debt	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, 2021: % of Principal Fixed Interest Rate Floating Interest Rate Notional Amount at December 31, 2021 (In millions) Effective Date Maturity Date Avra Valley 88 % 2.33 % 3-Month LIBOR $ 35 November 30, 2012 November 30, 2030 Alta Wind Asset Management 100 % 2.47 % 3-Month LIBOR 13 May 22, 2013 May 15, 2031 Borrego 100 % 0.476 % 3-Month LIBOR 10 June 30, 2020 December 31, 2024 Buckthorn Solar 81 % Various 3-Month LIBOR 100 February 28, 2018 December 31, 2041 Carlsbad 100 % Various 3-Month LIBOR 136 Various September 30, 2027 El Segundo 100 % Various 3-Month LIBOR 193 Various Various Kansas South 75 % 2.368 % 6-Month LIBOR 15 June 28, 2013 December 31, 2030 Kawailoa Solar 94 % Various 3-Month LIBOR 74 November 30, 2019 October 31, 2040 Laredo Ridge 100 % Various 3-Month LIBOR 72 December 17, 2014 December 31, 2028 Marsh Landing 100 % Various 3-Month LIBOR 84 June 28, 2013 June 30, 2023 NIMH Solar LLC 100 % Various 3-Month LIBOR 176 September 30, 2020 Various Oahu Solar 96 % Various 3-Month LIBOR 83 November 30, 2019 October 31, 2040 Rosie Class B 95 % 1.446 % 3-Month LIBOR 74 December 31, 2020 Various South Trent 90 % 3.847 % 3-Month LIBOR 31 June 14, 2019 June 30, 2028 Tapestry 100 % Various 3-Month LIBOR 85 Various Various Viento Funding II 100 % 3.03 % 6-Month LIBOR 29 Various Various Viento Funding II 100 % 4.985 % 6-Month LIBOR 21 July 11, 2023 June 30, 2028 Walnut Creek Energy 90 % 3.543 % 3-Month LIBOR 66 June 28, 2013 May 31, 2023 WCEP Holdings 97 % 4.003 % 3-Month LIBOR 29 June 28, 2013 May 31, 2023 Total $ 1,326
Schedule of annual payments based on the maturities of NRG Yield's debt	Annual Maturities Annual payments based on the maturities of the Company's debt, for the years ending after December 31, 2021, are as follows: (In millions) 2022 $ 772 2023 709 2024 392 2025 (a) 369 2026 (a) 422 Thereafter (a) 5,537 Total $ 8,201 (a) Annual payments based on the maturities of Thermal Business long-term debt reclassified to held for sale in the fourth quarter of 2021 are $4 million, $15 million and $404 million due in 2025, 2026 and thereafter, respectively.

Members' Equity (Tables)

Members' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Members' Equity [Abstract]
Schedule of Dividends Paid	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, 2021: Fourth Quarter 2021 Third Quarter 2021 Second Quarter 2021 First Quarter 2021 Distributions per Class A and Class B units $ 0.3400 $ 0.3345 $ 0.3290 $ 0.3240 Distributions per Class C and Class D units 0.3400 0.3345 0.3290 0.3240

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments	The Company generated more than 10% of its revenues from the following customers for the years ended December 31, 2021, 2020 and 2019: 2021 2020 2019 Customer Conventional Renewables Conventional Renewables Conventional Renewables SCE 17% 16% 18% 16% 21% 19% PG&E 10% 13% 10% 8% 12% 10%
Schedule of Segment Reporting Information, by Segment	Year ended December 31, 2021 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 441 $ 641 $ 204 $ — $ 1,286 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 90 229 134 (2) 451 Depreciation, amortization and accretion 132 354 23 — 509 Impairment losses — 6 — — 6 General and administrative — — 4 34 38 Transaction and integration costs — — — 7 7 Development costs — — 4 2 6 Operating income (loss) 219 52 39 (41) 269 Equity in earnings of unconsolidated affiliates 6 26 — — 32 Other income, net — 2 1 — 3 Loss on debt extinguishment — (1) — (52) (53) Interest expense, net (53) (142) (18) (99) (312) Income (loss) before income taxes 172 (63) 22 (192) (61) Income tax expense — 2 — — 2 Net Income (Loss) 172 (65) 22 (192) (63) Net Income (Loss) Attributable to Clearway Energy LLC $ 172 $ 109 $ 22 $ (193) $ 110 Balance Sheet Equity investment in affiliates $ 86 $ 295 $ — $ — $ 381 Capital expenditures (b) 12 77 29 1 119 Total Assets (c) $ 2,442 $ 9,603 $ 631 $ 42 $ 12,718 (a) Includes eliminations (b) Includes accruals (c) Thermal Business assets were reclassified to held for sale during the fourth quarter of 2021. Year ended December 31, 2020 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 437 $ 569 $ 193 $ — $ 1,199 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 90 147 131 (2) 366 Depreciation amortization and accretion 132 264 32 — 428 Impairment losses — 24 — — 24 General and administrative — — 3 30 33 Transaction and integration costs — — — 9 9 Development costs — — 5 — 5 Operating income (loss) 215 134 22 (37) 334 Equity in earnings (losses) of unconsolidated affiliates 8 (1) — — 7 Impairment loss on investment — (8) — — (8) Gain on sale of unconsolidated affiliates — — — 49 49 Other income, net 1 4 — (1) 4 Loss on debt extinguishment — (21) — (3) (24) Interest expense, net (84) (216) (19) (95) (414) Net Income (Loss) 140 (108) 3 (87) (52) Net Income (Loss) Attributable to Clearway Energy LLC $ 140 $ 4 $ 3 $ (86) $ 61 Balance Sheet Equity investments in affiliates $ 90 $ 651 $ — $ — $ 741 Capital expenditures (b) 12 44 50 — 106 Total Assets $ 2,575 $ 7,157 $ 627 $ 129 $ 10,488 (a) Includes eliminations (b) Includes accruals Year ended December 31, 2019 (In millions) Conventional Generation Renewables Thermal Corporate (a) Total Operating revenues $ 346 $ 485 $ 201 $ — $ 1,032 Cost of operations, exclusive of depreciation, amortization and accretion shown separately below 60 143 134 — 337 Depreciation amortization and accretion 103 271 27 — 401 Impairment losses — 14 19 — 33 General and administrative — 1 3 23 27 Transaction and integration costs — — — 3 3 Development costs — — 5 — 5 Operating income (loss) 183 56 13 (26) 226 Equity in earnings of unconsolidated affiliates 9 74 — — 83 Other income, net 2 6 — 1 9 Loss on debt extinguishment — (1) — (15) (16) Interest expense, net (59) (239) (18) (87) (403) Net Income (Loss) 135 (104) (5) (127) (101) Net Income (Loss) Attributable to Clearway Energy LLC $ 135 $ (33) $ (5) $ (127) $ (30) (a) Includes eliminations

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Long-term Purchase Commitment	As of December 31, 2021, the Company's future minimum commitments under such outstanding agreements are estimated as follows: (In millions) 2022 $ 7 2023 1 2024 — 2025 — 2026 — Thereafter — Total $ 8

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of Lease Information and Expense	Lease expense for the years ended December 31, 2021, 2020 and 2019 was comprised of the following: (In millions) December 31, 2021 December 31, 2020 December 31, 2019 Operating lease cost - Fixed $ 27 $ 19 $ 13 Operating lease cost - Variable 15 9 8 Total lease cost $ 42 $ 28 $ 21 Operating lease information as of December 31, 2021 and 2020 was as follows: (In millions, except term and rate) December 31, 2021 December 31, 2020 Right-of-use assets - operating leases, net (a) (b) $ 550 $ 337 Short-term lease liability - operating leases (c) $ 8 $ 8 Long-term lease liability - operating leases 561 345 Total lease liabilities (a) (b) $ 569 $ 353 Weighted average remaining lease term (in years) 28 25 Weighted average discount rate 3.5 % 4.3 % Cash paid for operating leases $ 26 $ 19 (a) Increases in right-of-use assets and total lease liabilities are primarily due to third-party and drop down asset acquisitions, as further described in Note 3, Acquisitions and Dispositions . (b) Thermal Business right-of-use assets and lease liabilities were reclassified to held for sale during the fourth quarter of 2021. (c) Short-term lease liability balances are included within the accrued expenses and other current liabilities
Maturities of Operating Lease Liabilities	Minimum future rental payments of operating lease liabilities as of December 31, 2021 are as follows: (In millions) 2022 $ 28 2023 28 2024 28 2025 28 2026 29 Thereafter 801 Total lease payments (a) 942 Less imputed interest (352) Total lease liability - operating leases $ 590 (a) Minimum future rental payments of the Thermal Business operating lease liabilities classified as held for sale are $1 million for each of 2022, 2023, 2024, 2025 and 2026, with $31 million due thereafter.
Energy and Capacity Revenue	The following amounts of energy and capacity revenue are related to the Company’s operating leases: Conventional Generation Renewables Thermal Total December 31, 2021 (In millions) Energy revenue $ 9 $ 716 $ 2 $ 727 Capacity revenue 455 — — 455 Operating revenue $ 464 $ 716 $ 2 $ 1,182 Conventional Generation Renewables Thermal Total December 31, 2020 (In millions) Energy revenue $ 10 $ 554 $ 2 $ 566 Capacity revenue 451 — — 451 Operating revenue $ 461 $ 554 $ 2 $ 1,017 Conventional Generation Renewables Thermal Total December 31, 2019 (In millions) Energy revenue $ 5 $ 509 $ 2 $ 516 Capacity revenue 348 — — 348 Operating revenue $ 353 $ 509 $ 2 $ 864
Minimum Future Rent Payments Under the Operating Leases	Minimum future rent payments for the remaining periods related to the Conventional segment operating leases as of December 31, 2021 were as follows: (In millions) 2022 $ 453 2023 261 2024 106 2025 107 2026 108 Thereafter 1,390 Total lease payments $ 2,425
Property, Plant, and Equipment Net	Property, plant and equipment, net related to the Company’s operating leases were as follows: (In millions) December 31, 2021 December 31, 2020 Property, plant and equipment $ 8,981 $ 7,201 Accumulated depreciation (2,827) (1,964) Net property, plant and equipment $ 6,154 $ 5,237

Nature of Business - Narrative

Nature of Business - Narrative (Details) - MW	12 Months Ended
	Dec. 31, 2021	Sep. 01, 2020
Nature of Business
Power generation capacity, megawatts	9,000	419
Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind
Nature of Business
Power generation capacity, megawatts	5,000
Generational Facilities and District Energy Systems
Nature of Business
Power generation capacity, megawatts	2,500
Clearway Energy LLC
Nature of Business
Ownership percentage	57.65%
Clearway Energy LLC | GIP
Nature of Business
Voting interest	45.07%
Ownership percentage	57.65%
Clearway Energy LLC | Shareholders
Nature of Business
Voting interest	54.93%
Ownership percentage	42.35%
CEG | Clearway Energy LLC
Nature of Business
Ownership percentage	42.35%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2021
Summary of Significant Accounting Policies [Line Items]
Contingent rental income	$ 741	$ 589	$ 537
Prepaid Expenses and Other Current Assets | State and Local Jurisdiction
Summary of Significant Accounting Policies [Line Items]
Refundable tax credit receivable				$ 49
PPA, refundable tax credit, aggregate amount utilized	20
Project Level Subsidiaries
Summary of Significant Accounting Policies [Line Items]
Other cash and cash equivalents	146	$ 149
Long-Term Debt, Current
Summary of Significant Accounting Policies [Line Items]
Restricted cash	34
Debt Service Obligations
Summary of Significant Accounting Policies [Line Items]
Restricted cash	131
Cash Distribution
Summary of Significant Accounting Policies [Line Items]
Restricted cash	64
Operating Funds
Summary of Significant Accounting Policies [Line Items]
Restricted cash	$ 246

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Cash and cash equivalents	$ 179	$ 268
Restricted cash	475	197
Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows	$ 654	$ 465	$ 414	$ 583

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Disaggregated Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 1,286	$ 1,199	$ 1,032
Less: Lease revenue	(741)	(589)	(537)
Energy Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(727)	(566)	(516)
Capacity Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(455)	(451)	(348)
Conventional | Energy Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(9)	(10)	(5)
Conventional | Capacity Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(455)	(451)	(348)
Renewables | Energy Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(716)	(554)	(509)
Renewables | Capacity Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	0	0	0
Thermal | Energy Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	(2)	(2)	(2)
Thermal | Capacity Revenue
Disaggregation of Revenue [Line Items]
Less: Lease revenue	0	0	0
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	1,286	1,199	1,032
Mark-to-market for economic hedges	(87)		(9)
Less: Contract amortization	(144)	(88)	(71)
Less: Lease revenue	(1,182)	(1,017)	(864)
Total revenue from contracts with customers	248	270	239
Operating Segments | Energy Revenue
Disaggregation of Revenue [Line Items]
Revenues	915	720	670
Operating Segments | Capacity Revenue
Disaggregation of Revenue [Line Items]
Revenues	510	514	402
Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Revenues	92	53	40
Operating Segments | Conventional
Disaggregation of Revenue [Line Items]
Revenues	441	437	346
Mark-to-market for economic hedges	0		0
Less: Contract amortization	(23)	(24)	(7)
Less: Lease revenue	(464)	(461)	(353)
Total revenue from contracts with customers	0	0	0
Operating Segments | Conventional | Energy Revenue
Disaggregation of Revenue [Line Items]
Revenues	9	10	5
Operating Segments | Conventional | Capacity Revenue
Disaggregation of Revenue [Line Items]
Revenues	455	451	348
Operating Segments | Conventional | Other Revenues
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Operating Segments | Renewables
Disaggregation of Revenue [Line Items]
Revenues	641	569	485
Mark-to-market for economic hedges	(87)		(9)
Less: Contract amortization	(118)	(61)	(61)
Less: Lease revenue	(716)	(554)	(509)
Total revenue from contracts with customers	43	76	37
Operating Segments | Renewables | Energy Revenue
Disaggregation of Revenue [Line Items]
Revenues	784	609	545
Operating Segments | Renewables | Capacity Revenue
Disaggregation of Revenue [Line Items]
Revenues	2	0	0
Operating Segments | Renewables | Other Revenues
Disaggregation of Revenue [Line Items]
Revenues	60	21	10
Operating Segments | Thermal
Disaggregation of Revenue [Line Items]
Revenues	204	193	201
Mark-to-market for economic hedges	0		0
Less: Contract amortization	(3)	(3)	(3)
Less: Lease revenue	(2)	(2)	(2)
Total revenue from contracts with customers	205	194	202
Operating Segments | Thermal | Energy Revenue
Disaggregation of Revenue [Line Items]
Revenues	122	101	120
Operating Segments | Thermal | Capacity Revenue
Disaggregation of Revenue [Line Items]
Revenues	53	63	54
Operating Segments | Thermal | Other Revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 32	$ 32	$ 30

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Contract Balances (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Accounts receivable, net	$ 144	$ 143
Customer Contracts
Disaggregation of Revenue [Line Items]
Accounts receivable, net	44	57
Lease Agreements
Disaggregation of Revenue [Line Items]
Accounts receivable, net	$ 100	$ 86

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Asset Retirement Obligation (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance as of December 31, 2020	$ 117
Thermal Business AROs reclassified to held for sale	1
Revisions in estimates for current obligations	2
Additions	19
Accretion — expense	9
Balance as of December 31, 2021	$ 146

Acquisitions and Dispositions -

Acquisitions and Dispositions - Narrative (Details) $ in Millions

Dec. 29, 2021USD ($)MW

Dec. 17, 2021USD ($)MW

Dec. 01, 2021USD ($)farmMW

Apr. 23, 2021USD ($)MW

Feb. 03, 2021USD ($)MW

Jan. 12, 2021USD ($)MW

Dec. 21, 2020USD ($)MW

Nov. 20, 2020USD ($)MW

Nov. 02, 2020USD ($)

Sep. 01, 2020USD ($)MW

May 14, 2020USD ($)

Mar. 03, 2020USD ($)

Feb. 28, 2022USD ($)

Jan. 31, 2021USD ($)

Jan. 31, 2021USD ($)

Dec. 31, 2021USD ($)MW

Dec. 31, 2021USD ($)MW

Dec. 31, 2020USD ($)

Dec. 31, 2019USD ($)

Oct. 22, 2021USD ($)

Feb. 02, 2021

Business Acquisition [Line Items]

Power generation capacity, megawatts | MW

419

9,000

9,000

Contributions from CEG, non-cash

$ 87

Payments to acquire equity method investments

$ 0

$ 11

$ 13

Equity investments in affiliates

$ 381

$ 381

$ 741

Mesquite Star

Business Acquisition [Line Items]

Equity investments in affiliates

$ 58

Mesquite Star HoldCo LLC

Business Acquisition [Line Items]

Payments to acquire equity method investments

$ 74

Remaining lease term (in years)

12 years

Adjustment for purchase of noncontrolling interests

$ 83

Mesquite Star HoldCo LLC | Mesquite Star

Business Acquisition [Line Items]

Net assets acquired less noncontrolling interests

63

RPV Holdco 1 LLC

Business Acquisition [Line Items]

Net proceeds from disposition

$ 75

Gain (loss) on disposition

$ 49

Energy Center Dover

Business Acquisition [Line Items]

Net proceeds from disposition

$ 15

Sale of assets, percentage of ownership interest sold

100.00%

Thermal | Discontinued Operations, Disposed of by Sale

Business Acquisition [Line Items]

Proceeds from sale of business

$ 1,900

Disposition, property, plant and equipment, percent

78.00%

78.00%

Disposition, intangible assets, percent

9.00%

9.00%

Disposition, liabilities held for sale, percent

85.00%

85.00%

Lighthouse Renewable Holdco LLC | Mesquite Star Tax Equity Holdco LLC

Business Acquisition [Line Items]

Ownership interest

100.00%

Black Rock Drop Down

Business Acquisition [Line Items]

Asset acquisition consideration

$ 60

Power generation capacity, megawatts | MW

115

Power purchase agreement period (in years)

15 years

Net assets acquired less noncontrolling interest

$ 19

Payments to acquire productive assets

$ 37

Black Rock Drop Down | Subsequent Event

Business Acquisition [Line Items]

Payments to acquire productive assets

$ 23

Black Rock Drop Down | CEG | Noncontrolling Interest

Business Acquisition [Line Items]

Contributions from CEG, non-cash

$ 133

Mesquite Sky

Business Acquisition [Line Items]

Asset acquisition consideration

$ 61

Power purchase agreement period (in years)

12 years

Net assets acquired less noncontrolling interest

$ 7

Mesquite Sky | CEG

Business Acquisition [Line Items]

Net assets acquired less noncontrolling interest

$ 53

Mesquite Sky | CEG | Noncontrolling Interest

Business Acquisition [Line Items]

Contributions from CEG, non-cash

$ 52

Mesquite Sky | Wind Power Generation

Business Acquisition [Line Items]

Power generation capacity, megawatts | MW

340

Utah Solar Portfolio

Business Acquisition [Line Items]

Asset acquisition consideration

$ 335

Power generation capacity, megawatts | MW

530

Power purchase agreement period (in years)

20 years

Net assets acquired less noncontrolling interest

$ 330

Percentage equity interests acquired

50.00%

Payments for asset acquisition, net of purchase price adjustments

$ 330

Asset acquisition, purchase price adjustments, amount

$ 5

Number of utility-scale solar farms | farm

7

Cash acquired from acquisition

$ 8

Asset acquisition, net cash outlfow

$ 322

Utah Solar Portfolio | PacifiCorp

Business Acquisition [Line Items]

Power purchase remaining agreement period

15 years

Utah Solar Portfolio | Clearway Energy, Inc.

Business Acquisition [Line Items]

Ownership interest

100.00%

Mount Storm Wind

Business Acquisition [Line Items]

Net assets acquired less noncontrolling interest

$ 100

Percentage equity interests acquired

100.00%

Power purchase remaining agreement period

10 years

Gross consideration for asset acquisition

$ 96

Asset acquisition, consideration transferred, working capital and purchase price adjustments

4

Payments to acquire productive assets

$ 100

Mount Storm Wind | Wind Power Generation

Business Acquisition [Line Items]

Power generation capacity, megawatts | MW

264

Agua Caliente

Business Acquisition [Line Items]

Asset acquisition consideration

$ 202

Power generation capacity, megawatts | MW

290

Power purchase agreement period (in years)

25 years

Net assets acquired less noncontrolling interest

$ 202

Percentage equity interests acquired

35.00%

Power purchase remaining agreement period

17 years

Asset acquisition, cash and cash equivalents and restricted Cash

$ 91

Payments for asset acquisition, net cash outflow

$ 111

Agua Caliente | Clearway Energy, Inc.

Business Acquisition [Line Items]

Ownership interest

51.00%

Equity interest (percent)

16.00%

Agua Caliente | Third Party Investor

Business Acquisition [Line Items]

Third party ownership interest (percent)

49.00%

49.00%

Rattlesnake

Business Acquisition [Line Items]

Asset acquisition consideration

$ 132

$ 132

Power purchase agreement period (in years)

20 years

Net assets acquired less noncontrolling interest

$ 14

Rattlesnake | Wind Power Generation

Business Acquisition [Line Items]

Power generation capacity, megawatts | MW

160

Power generation capacity, deliverable, megawatts | MW

144

Langford Drop Down

Business Acquisition [Line Items]

Asset acquisition consideration

$ 64

Power generation capacity, megawatts | MW

160

Net assets acquired less noncontrolling interest

$ 21

Percentage equity interests acquired

100.00%

Langford Drop Down | CEG

Business Acquisition [Line Items]

Asset acquisition consideration

$ 55

Langford Drop Down | Third Party Investor

Business Acquisition [Line Items]

Asset acquisition consideration

$ 9

Rosamond Central Drop Down

Business Acquisition [Line Items]

Asset acquisition consideration

$ 23

$ 1

$ 24

Power generation capacity, megawatts | MW

192

Net assets acquired less noncontrolling interest

$ 28

Percentage equity interests acquired

100.00%

DGPV Funds | Renew DG Holdings LLC | Affiliated Entity

Business Acquisition [Line Items]

Payments to acquire business

$ 20

DGPV Funds | SREC

Business Acquisition [Line Items]

Payments to acquire business

$ 24

Acquisitions and Dispositions_2

Acquisitions and Dispositions - Summary of Assets and Liabilities Transferred (Details) - USD ($) $ in Millions	Dec. 29, 2021	Dec. 17, 2021	Dec. 01, 2021	Apr. 23, 2021	Feb. 03, 2021	Jan. 12, 2021	Dec. 21, 2020	Nov. 20, 2020	Jan. 31, 2021	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Other intangible assets												$ 23
Payments to fund project reserve accounts						$ 29
Payments for other fees						5
Contributions from CEG, non-cash													$ 87
Tax Equity Investors
Business Acquisition [Line Items]
Proceeds from noncontrolling interests						107
CEG
Business Acquisition [Line Items]
Proceeds from noncontrolling interests						103
Black Rock Drop Down
Business Acquisition [Line Items]
Current assets	$ 36
Restricted cash	35
Property, plant and equipment	178
Right-of-use assets	7
Other intangible assets	2
Total assets acquired	223
Long-term debt	186
Long-term lease liabilities	7
Other current and non-current liabilities	11
Total liabilities assumed (c)	204
Net assets acquired less noncontrolling interest	19
Proceeds from noncontrolling interests	190
Repayment of debt, acquired in asset acquisition	186
Payments to fund project reserve accounts	37
Payments for other fees	4
Asset acquisition consideration	60
Black Rock Drop Down | Tax Equity Investors
Business Acquisition [Line Items]
Proceeds from noncontrolling interests	56
Black Rock Drop Down | Cash Equity Investor
Business Acquisition [Line Items]
Proceeds from noncontrolling interests	36
Black Rock Drop Down | CEG
Business Acquisition [Line Items]
Total liabilities assumed (c)	83
Proceeds from noncontrolling interests	61
Black Rock Drop Down | CEG | Noncontrolling Interest
Business Acquisition [Line Items]
Contributions from CEG, non-cash											$ 133
Black Rock Drop Down | Tax Equity and Cash Equity Investors
Business Acquisition [Line Items]
Escrow amount											59
Mesquite Sky Drop Down
Business Acquisition [Line Items]
Current assets		$ 46
Restricted cash		44
Property, plant and equipment		377
Right-of-use assets		45
Other intangible assets		7
Total assets acquired		475
Long-term debt		355
Long-term lease liabilities		45
Derivative instruments		43
Other current and non-current liabilities		39
Total liabilities assumed (c)		482
Net assets acquired less noncontrolling interest		7
Proceeds from noncontrolling interests		409
Repayment of debt, acquired in asset acquisition		355
Payments to fund project reserve accounts		61
Payments for other fees		1
Asset acquisition consideration		61
Mesquite Sky Drop Down | Tax Equity Investors
Business Acquisition [Line Items]
Proceeds from noncontrolling interests		241
Mesquite Sky Drop Down | Cash Equity Investor
Business Acquisition [Line Items]
Proceeds from noncontrolling interests		107
Mesquite Sky Drop Down | CEG
Business Acquisition [Line Items]
Total liabilities assumed (c)	$ 6
Net assets acquired less noncontrolling interest		$ 53
Mesquite Sky Drop Down | CEG | Noncontrolling Interest
Business Acquisition [Line Items]
Contributions from CEG, non-cash											52
Mesquite Sky Drop Down | Tax Equity and Cash Equity Investors
Business Acquisition [Line Items]
Escrow amount											$ 5
Utah Solar Portfolio
Business Acquisition [Line Items]
Current assets			$ 20
Property, plant and equipment			258
Intangible assets for power purchase agreement			302
Right-of-use assets			163
Other intangible assets			4
Total assets acquired			747
Other current and non-current liabilities			24
Long-term lease liabilities			163
Total liabilities assumed (c)			187
Equity method investment removed			(230)
Net assets acquired less noncontrolling interest			330
Asset acquisition consideration			335
Mount Storm Wind
Business Acquisition [Line Items]
Current assets				$ 3
Property, plant and equipment				108
Other intangible assets				2
Total assets acquired				113
Other current and non-current liabilities				4
Derivative instruments				9
Total liabilities assumed (c)				13
Net assets acquired less noncontrolling interest				$ 100
Agua Caliente
Business Acquisition [Line Items]
Restricted cash					$ 91
Property, plant and equipment					154
Other current assets					9
Other intangible assets					1,022
Total assets acquired					1,276
Long-term debt					5
Other current and non-current liabilities					716
Total liabilities assumed (c)					721
Noncontrolling interest					273
Equity method investment removed					(80)
Net assets acquired less noncontrolling interest					202
Asset acquisition consideration					$ 202
Rattlesnake
Business Acquisition [Line Items]
Current assets						8
Property, plant and equipment						200
Right-of-use assets						12
Total assets acquired						220
Long-term debt						176
Long-term lease liabilities						12
Other current and non-current liabilities						18
Total liabilities assumed (c)						206
Net assets acquired less noncontrolling interest						14
Proceeds from noncontrolling interests						210
Repayment of debt, acquired in asset acquisition						176
Asset acquisition consideration			$ 132			$ 132
Langford Drop Down
Business Acquisition [Line Items]
Current assets								$ 4
Property, plant and equipment								138
Other current assets								15
Total assets acquired								157
Other current and non-current liabilities								17
Total liabilities assumed (c)								17
Noncontrolling interest								119
Net assets acquired less noncontrolling interest								21
Asset acquisition consideration								64
Langford Drop Down | CEG
Business Acquisition [Line Items]
Asset acquisition consideration								$ 55
Rosamond Central Drop Down
Business Acquisition [Line Items]
Current assets							$ 49
Property, plant and equipment							246
Other current assets							1
Total assets acquired							296
Long-term debt							205
Other current and non-current liabilities							11
Total liabilities assumed (c)							216
Noncontrolling interest							52
Net assets acquired less noncontrolling interest							28
Asset acquisition consideration							$ 23		$ 1	$ 24

Acquisitions and Dispositions_3

Acquisitions and Dispositions - Equity Method Investments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 21, 2020	Nov. 02, 2020	May 29, 2020
Subsidiary or Equity Method Investee [Line Items]
Current assets	$ 1,531	$ 708
Property, plant and equipment, net	7,650	7,217
Other non-current assets	101	114
Total assets	12,718	10,488
Long-term debt	8,201
Liabilities	9,501	$ 7,876
DGPV Holdco 3
Subsidiary or Equity Method Investee [Line Items]
Property, plant and equipment, net	592
Total assets	712
Liabilities	76
Noncontrolling interests and redeemable noncontrolling interests	$ 6
Mesquite Star HoldCo LLC | Mesquite Star
Subsidiary or Equity Method Investee [Line Items]
Current assets			$ 22
Property, plant and equipment, net			443
Other non-current assets			31
Total assets			496
Other current and non-current liabilities			87
Liabilities			87
Noncontrolling interests and redeemable noncontrolling interests			346
Net assets acquired less noncontrolling interests			$ 63
DGPV Funds | DGPV Holdco 1 and 2
Subsidiary or Equity Method Investee [Line Items]
Current assets				$ 29
Property, plant and equipment, net				324
Intangible assets, net				19
Other non-current assets				52
Total assets				424
Long-term debt				160
Other current and non-current liabilities				54
Liabilities				214
Noncontrolling interests and redeemable noncontrolling interests				5
Net assets acquired less noncontrolling interests				$ 205
DGPV Funds | DGPV Holdco 3
Subsidiary or Equity Method Investee [Line Items]
Current assets					$ 32
Property, plant and equipment, net					331
Intangible assets, net					1
Other non-current assets					37
Total assets					401
Long-term debt					206
Other current and non-current liabilities					84
Liabilities					290
Noncontrolling interests and redeemable noncontrolling interests					6
Net assets acquired less noncontrolling interests					$ 105

Investments Accounted for by _3

Investments Accounted for by the Equity Method and Variable Interest Entities - Maximum Exposure to Loss Limited to Equity method investments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity investments in affiliates	$ 381	$ 741
Avenal
Schedule of Equity Method Investments [Line Items]
Economic Interest	50.00%
Equity investments in affiliates	$ 4
Desert Sunlight
Schedule of Equity Method Investments [Line Items]
Economic Interest	25.00%
Equity investments in affiliates	$ 239
Elkhorn Ridge
Schedule of Equity Method Investments [Line Items]
Economic Interest	66.70%
Equity investments in affiliates	$ 29
Gen Conn
Schedule of Equity Method Investments [Line Items]
Economic Interest	50.00%
Equity investments in affiliates	$ 86
San Juan Mesa
Schedule of Equity Method Investments [Line Items]
Economic Interest	75.00%
Equity investments in affiliates	$ 23

Investments Accounted for by _4

Investments Accounted for by the Equity Method and Variable Interest Entities - Summarized Financial Information of Equity Method Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 01, 2021	Feb. 03, 2021
Schedule of Equity Method Investments [Line Items]
Revenues	$ 1,286	$ 1,199	$ 1,032
Operating Income	269	334	226
Net loss	(63)	(52)	(101)
Current assets	1,531	708
Current liabilities	1,635	638
Non-current liabilities	7,866	7,238
GenConn
Schedule of Equity Method Investments [Line Items]
Revenues	55	60	60
Operating Income	22	26	27
Net loss	13	17	17
Current assets	38	40
Non-current assets	328	344
Current liabilities	15	17
Non-current liabilities	178	185
Desert Sunlight
Schedule of Equity Method Investments [Line Items]
Revenues	205	209	205
Operating Income	146	142	123
Net loss	112	88	58
Current assets	131	132
Non-current assets	1,228	1,244
Current liabilities	64	71
Non-current liabilities	904	921
Other
Schedule of Equity Method Investments [Line Items]
Revenues	49	299	318
Operating Income	16	138	110
Net loss	13	60	$ 50
Current assets	26	177
Non-current assets	172	2,201
Current liabilities	24	114
Non-current liabilities	$ 98	$ 700
Agua Caliente
Schedule of Equity Method Investments [Line Items]
Additional equity method investment interests acquired					35.00%
Utah Solar Portfolio
Schedule of Equity Method Investments [Line Items]
Additional equity method investment interests acquired				50.00%

Investments Accounted for by _5

Investments Accounted for by the Equity Method and Variable Interest Entities - VIEs that are Consolidated (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Other assets	$ 3,537	$ 2,563
Property, plant and equipment, net	7,650	7,217
Finite-Lived Intangible Assets, Net	2,499	1,370
Total assets	12,718	10,488
Liabilities	9,501	$ 7,876
Alta TE Holdco
Schedule of Equity Method Investments [Line Items]
Other assets	53
Property, plant and equipment, net	331
Finite-Lived Intangible Assets, Net	212
Total assets	596
Liabilities	40
Noncontrolling interests and redeemable noncontrolling interests	13
Net assets less noncontrolling interests	543
Buckthorn Renewables, LLC
Schedule of Equity Method Investments [Line Items]
Other assets	4
Property, plant and equipment, net	202
Finite-Lived Intangible Assets, Net	0
Total assets	206
Liabilities	10
Noncontrolling interests and redeemable noncontrolling interests	44
Net assets less noncontrolling interests	152
DGPV Holdco 3
Schedule of Equity Method Investments [Line Items]
Other assets	104
Property, plant and equipment, net	592
Finite-Lived Intangible Assets, Net	16
Total assets	712
Liabilities	76
Noncontrolling interests and redeemable noncontrolling interests	6
Net assets less noncontrolling interests	630
Kawailoa Solar Partnership LLC
Schedule of Equity Method Investments [Line Items]
Other assets	40
Property, plant and equipment, net	135
Finite-Lived Intangible Assets, Net	0
Total assets	175
Liabilities	103
Noncontrolling interests and redeemable noncontrolling interests	48
Net assets less noncontrolling interests	24
Langford TE Partnership LLC
Schedule of Equity Method Investments [Line Items]
Other assets	17
Property, plant and equipment, net	132
Finite-Lived Intangible Assets, Net	2
Total assets	151
Liabilities	18
Noncontrolling interests and redeemable noncontrolling interests	66
Net assets less noncontrolling interests	67
Lighthouse Renewable Holdco LLC
Schedule of Equity Method Investments [Line Items]
Other assets	84
Property, plant and equipment, net	605
Finite-Lived Intangible Assets, Net	0
Total assets	689
Liabilities	150
Noncontrolling interests and redeemable noncontrolling interests	416
Net assets less noncontrolling interests	123
Lighthouse Renewable Holdco 2 LLC
Schedule of Equity Method Investments [Line Items]
Other assets	83
Property, plant and equipment, net	377
Finite-Lived Intangible Assets, Net	0
Total assets	460
Liabilities	118
Noncontrolling interests and redeemable noncontrolling interests	239
Net assets less noncontrolling interests	103
Oahu Solar Partnership
Schedule of Equity Method Investments [Line Items]
Other assets	47
Property, plant and equipment, net	172
Finite-Lived Intangible Assets, Net	0
Total assets	219
Liabilities	114
Noncontrolling interests and redeemable noncontrolling interests	31
Net assets less noncontrolling interests	74
Pinnacle Repowering Partnership HoldCo LLC
Schedule of Equity Method Investments [Line Items]
Other assets	12
Property, plant and equipment, net	108
Finite-Lived Intangible Assets, Net	18
Total assets	138
Liabilities	6
Noncontrolling interests and redeemable noncontrolling interests	78
Net assets less noncontrolling interests	54
Rattlesnake TE Holdco LLC
Schedule of Equity Method Investments [Line Items]
Other assets	30
Property, plant and equipment, net	194
Finite-Lived Intangible Assets, Net	0
Total assets	224
Liabilities	23
Noncontrolling interests and redeemable noncontrolling interests	98
Net assets less noncontrolling interests	103
Rosie TargetCo LLC
Schedule of Equity Method Investments [Line Items]
Other assets	26
Property, plant and equipment, net	251
Finite-Lived Intangible Assets, Net	0
Total assets	277
Liabilities	100
Noncontrolling interests and redeemable noncontrolling interests	140
Net assets less noncontrolling interests	37
Wildorado TE Holdco
Schedule of Equity Method Investments [Line Items]
Other assets	21
Property, plant and equipment, net	225
Finite-Lived Intangible Assets, Net	0
Total assets	246
Liabilities	18
Noncontrolling interests and redeemable noncontrolling interests	121
Net assets less noncontrolling interests	107
Other Consolidated Variable Interest Entities
Schedule of Equity Method Investments [Line Items]
Other assets	16
Property, plant and equipment, net	168
Finite-Lived Intangible Assets, Net	1
Total assets	185
Liabilities	44
Noncontrolling interests and redeemable noncontrolling interests	84
Net assets less noncontrolling interests	$ 57

Investments Accounted for by _6

Investments Accounted for by the Equity Method and Variable Interest Entities - Narrative (Details) $ in Millions

Dec. 15, 2021USD ($)

Mar. 10, 2021USD ($)

Jan. 12, 2021USD ($)

Nov. 20, 2020USD ($)MW

May 11, 2020USD ($)

Dec. 22, 2019USD ($)

Nov. 26, 2019USD ($)

Nov. 12, 2019USD ($)

Aug. 31, 2018USD ($)MW

Jun. 30, 2015USD ($)

Mar. 31, 2020USD ($)

Jun. 30, 2020USD ($)

Dec. 31, 2021USD ($)MW

Dec. 31, 2020USD ($)

Dec. 31, 2019USD ($)

Feb. 26, 2021MW

Dec. 21, 2020

Nov. 02, 2020USD ($)fund

Sep. 01, 2020MW

May 29, 2020USD ($)projectrenewalOptionMW

Feb. 07, 2020USD ($)

Dec. 27, 2019USD ($)

Jun. 14, 2019USD ($)

May 07, 2019USD ($)

Mar. 08, 2019USD ($)

Aug. 30, 2018

Schedule of Equity Method Investments [Line Items]

Retained earnings, undistributed earnings from equity method investees

$ 14

$ 10

Payments to acquire equity method investments

$ 0

11

$ 13

Power generation capacity, megawatts | MW

9,000

419

Equity investment in affiliates

$ 381

741

Percentage of cash available for distributions

95.00%

Taxable income allocation, pre-flip

99.00%

Long-term debt

$ 8,201

Removed related noncontrolling interest balance

$ 8

Depreciation

$ 499

420

395

Contributions from CEG, non-cash

87

Rattlesnake TE Holdco LLC

Schedule of Equity Method Investments [Line Items]

Payments for asset acquisition

$ 132

Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

160

Asset acquisition consideration

$ 64

DGPV Funds

Schedule of Equity Method Investments [Line Items]

Payments to acquire equity method investments

$ 10

Power generation capacity, megawatts | MW

113

286

Remaining lease term (in years)

21 years

Income allocation percentage

99.00%

Equity investment in affiliates

$ (155)

Number of projects | project

7

Number of tax equity funds

6

6

Number of solar projects | renewalOption

172

DGPV Holdco 1 and 2

Schedule of Equity Method Investments [Line Items]

Equity investment in affiliates

$ 144

Lighthouse Renewable Holdco LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

50.01%

Rosie TargetCo LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

50.00%

Repowering Partnership II LLC

Schedule of Equity Method Investments [Line Items]

Cash consideration to acquire interest joint venture

$ 70

Desert Sunlight

Schedule of Equity Method Investments [Line Items]

Payments to acquire equity method investments

$ 285

Equity investment in affiliates

$ 239

Long-term debt

$ 345

Economic Interest

25.00%

Asset acquisition, consideration transferred, working capital and purchase price adjustments

$ 171

Avenal

Schedule of Equity Method Investments [Line Items]

Equity investment in affiliates

$ 4

Economic Interest

50.00%

Kawailoa Solar Holdings LLC

Schedule of Equity Method Investments [Line Items]

Acquisition of noncontrolling interest

$ 61

$ 7

Oahu Solar, Lanikuhana

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

15

Power purchase agreement period (in years)

22 years

Oahu Solar, Waipio

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

46

Repowering Partnership LLC

Schedule of Equity Method Investments [Line Items]

Economic Interest

21.00%

Depreciation

9

Wildorado TE Holdco

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

5.00%

Business combination consideration transferred

$ 112

Pinnacle Repowering Partnership HoldCo LLC

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

54

Kawailoa Partnership

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

49

Payments to acquire business

$ 9

Power purchase agreement period (in years)

22 years

Capital contribution, percent

20.00%

Acquisition of noncontrolling interest

$ 2

Long-term debt

120

Noncontrolling interest

$ 21

Zephyr Oahu Partnership LLC

Schedule of Equity Method Investments [Line Items]

Capital contribution, percent

20.00%

Acquisition of noncontrolling interest

$ 4

Long-term debt

143

Zephyr Oahu Partnership LLC | Oahu Solar Partnership

Schedule of Equity Method Investments [Line Items]

Payments to acquire business

$ 20

Elbow Creek | Repowering Partnership II LLC

Schedule of Equity Method Investments [Line Items]

Depreciation

54

Elbow Creek | Elbow TE Holdco

Schedule of Equity Method Investments [Line Items]

Business combination consideration transferred

$ 4

Wind TE Holdco | Elbow Creek | Repowering Partnership II LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

59.63%

CWSP Wildorado Elbow Holding LLC | Elbow Creek | Repowering Partnership II LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

40.37%

Alta TE Holdco | Financial Institutions

Schedule of Equity Method Investments [Line Items]

Taxable income allocation, pre-flip

99.00%

Taxable income allocation, post-flip

5.00%

Repowering Partnership II LLC | CWSP Wildorado Elbow Holding LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

39.86%

Repowering Partnership II LLC | Wind TE Holdco LLC

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

60.14%

Langford Wind Project

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

160

Tax Equity Investors

Schedule of Equity Method Investments [Line Items]

Proceeds from noncontrolling interests

107

Decrease from distributions to noncontrolling interest holders

3

Tax Equity Investors | Noncontrolling Interest

Schedule of Equity Method Investments [Line Items]

Decrease from distributions to noncontrolling interest holders

$ 3

Tax Equity Investors | Oahu Solar Partnership

Schedule of Equity Method Investments [Line Items]

Proceeds from noncontrolling interests

$ 71

Tax Equity Investors | Zephyr Oahu Partnership LLC

Schedule of Equity Method Investments [Line Items]

Noncontrolling interest

$ 18

CEG

Schedule of Equity Method Investments [Line Items]

Proceeds from noncontrolling interests

103

Decrease from distributions to noncontrolling interest holders

$ 64

CEG | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Asset acquisition consideration

$ 55

CEG | Pinnacle Repowering Partnership HoldCo LLC | Noncontrolling Interest

Schedule of Equity Method Investments [Line Items]

Income allocation percentage

15.00%

Contributions from CEG, non-cash

$ 27

Payments to acquire productive assets

$ 21

CEG | Rosie TargetCo LLC

Schedule of Equity Method Investments [Line Items]

Economic ownership interest

100.00%

CEG | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Economic ownership interest

100.00%

Third Party Investor | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Asset acquisition consideration

$ 9

Third Party Investor | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Economic ownership interest

100.00%

Second Year through Flip Point | Alta TE Holdco

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

94.34%

Post-Flip Point | Alta TE Holdco

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

97.12%

Post-Flip Point | Spring Canyon

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

95.00%

Post-Flip Point | Spring Canyon | Financial Institutions

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

5.00%

Pre-determined Date Through Flip Point If Flip Has Not Occured | Alta TE Holdco | Financial Institutions

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

100.00%

Wind Farms | Spring Canyon II

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

32

Economic ownership interest

90.10%

Wind Farms | Spring Canyon III

Schedule of Equity Method Investments [Line Items]

Power generation capacity, megawatts | MW

28

Capital Unit, Class A | Pinnacle Repowering Partnership HoldCo LLC

Schedule of Equity Method Investments [Line Items]

Economic Interest

100.00%

Capital Unit, Class A | Third Party Investor | Rattlesnake TE Holdco LLC

Schedule of Equity Method Investments [Line Items]

Membership interest

107

Capital Unit, Class B | Pinnacle Repowering Partnership HoldCo LLC

Schedule of Equity Method Investments [Line Items]

Economic Interest

100.00%

Kawailoa Solar Partnership LLC | Kawailoa Solar Project

Schedule of Equity Method Investments [Line Items]

Ownership interest

51.00%

Third Party Investor | Kawailoa Solar Project

Schedule of Equity Method Investments [Line Items]

Ownership interest

49.00%

Third Party Investor | Capital Unit, Class A | Wildorado TE Holdco

Schedule of Equity Method Investments [Line Items]

Membership interest

$ 148

Third Party Investor | Capital Unit, Class A | Wildorado TE Holdco | Wildorado TE Holdco

Schedule of Equity Method Investments [Line Items]

Economic ownership interest

100.00%

Third Party Investor | Capital Unit, Class A | Elbow Creek | Elbow TE Holdco

Schedule of Equity Method Investments [Line Items]

Economic ownership interest

100.00%

Membership interest

$ 89

Wind Global LLC | Wind Farms

Schedule of Equity Method Investments [Line Items]

Noncontrolling interest, ownership percentage by noncontrolling owners

9.90%

Rosie Class B LLC | Rosie TargetCo LLC

Schedule of Equity Method Investments [Line Items]

Percentage of ownership

100.00%

Rosie TE Holdco LLC | Rosie Class B LLC

Schedule of Equity Method Investments [Line Items]

Percentage of ownership

100.00%

Langford Tax Equity Partnership LLC | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Percentage of ownership

100.00%

Langford Class B Holdco LLC | Langford Drop Down

Schedule of Equity Method Investments [Line Items]

Ownership interest

100.00%

Langford Wind Project | Langford Tax Equity Partnership LLC

Schedule of Equity Method Investments [Line Items]

Ownership interest

100.00%

Third-Party Tax Equity Investor | Capital Unit, Class B | Pinnacle Repowering Partnership LLC

Schedule of Equity Method Investments [Line Items]

Payments to acquire business

$ 48

ITC Bridge Loan | Kawailoa Solar Holdings LLC

Schedule of Equity Method Investments [Line Items]

Repayments of debt

57

ITC Bridge Loan | Oahu Solar Partnership

Schedule of Equity Method Investments [Line Items]

Repayments of debt

$ 67

Term Debt | Kawailoa Solar Holdings LLC

Schedule of Equity Method Investments [Line Items]

Proceeds from debt

$ 5

Construction Loan | Elbow Creek

Schedule of Equity Method Investments [Line Items]

Long-term debt

$ 93

Pinnacle Repowering Partnership Holdco LLC, due 2021 | Variable Interest Entity, Primary Beneficiary

Schedule of Equity Method Investments [Line Items]

Debt instrument, face amount

$ 352

Rattlesnake Class B LLC Credit Facility

Schedule of Equity Method Investments [Line Items]

Repayments of debt

$ 176

Affiliated Entity

Schedule of Equity Method Investments [Line Items]

Percentage of cash available for distributions

5.00%

Affiliated Entity | Clearway Renew LLC | Oahu Solar Partnership

Schedule of Equity Method Investments [Line Items]

Noncontrolling interest

$ 16

Percentage of ownership

80.00%

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 10,151	$ 9,540
Accumulated depreciation	(2,501)	(2,323)
Net property, plant and equipment	7,650	7,217
Prepaid long-term service agreement	17	14
Depreciation expense	499	420	$ 395
Facilities and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 9,747	9,254
Facilities and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Facilities and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 320	224
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 84	62
Repowering Partnership LLC
Property, Plant and Equipment [Line Items]
Depreciation expense		$ 9

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Balance Sheet Grouping and Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt — affiliate	$ 1	$ 1
Long-term debt, including current portion — external	7,782	7,048
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt — affiliate	1	1
Long-term debt, including current portion — external	7,997	7,020
Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion — external	2,160	1,906
Level 3 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion — external	$ 5,838	$ 5,115

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Recurring Fair Value (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 6	$ 1
Derivative liabilities	242	173
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Unrealized gain (loss) on derivatives	22	2	$ 7
Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	179	44
Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6	1
Derivative liabilities	63	129
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Unrealized gain (loss) on derivatives	53	(38)	(65)
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial instruments	0	0
Assets, Fair Value Disclosure	6	1
Derivative liabilities	63	129
Recurring | Level 2 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Recurring | Level 2 | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6	1
Derivative liabilities	63	129
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial instruments	25	29
Assets, Fair Value Disclosure	25	29
Derivative liabilities	179	44
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	(15)	(9)
Total losses for the period included in earnings	(93)	0
Contracts acquired	(52)	(6)
Settlements	6	0
Ending balance	(154)	(15)	$ (9)
Unrealized gain (loss) on derivatives	(93)	1
Recurring | Level 3 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	179	44
Recurring | Level 3 | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	$ 0	$ 0

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Narrative (Details) $ in Millions	Dec. 31, 2021USD ($)
Fair Value Disclosures [Abstract]
Impact of credit reserve to fair value	$ 17

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Significant Unobservable Inputs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)$ / MWhMWh	Dec. 31, 2020USD ($)
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial instruments | $	$ 25	$ 29
Energy Related Derivative | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability | $	$ (179)
Minimum | Forecast Annual Generation Levels Of Certain DG Solar Facilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets, measurement input | MWh	80,872
Minimum | Energy Related Derivative | Measurement Input, Commodity Forward Price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input | $ / MWh	13.93
Maximum | Forecast Annual Generation Levels Of Certain DG Solar Facilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets, measurement input | MWh	129,913
Maximum | Energy Related Derivative | Measurement Input, Commodity Forward Price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input | $ / MWh	56.06
Weighted Average | Forecast Annual Generation Levels Of Certain DG Solar Facilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets, measurement input | MWh	124,783
Weighted Average | Energy Related Derivative | Measurement Input, Commodity Forward Price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input | $ / MWh	27.46

Accounting for Derivative Ins_3

Accounting for Derivative Instruments and Hedging Activities - Notional Amount and FV of Derivatives (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)MMBTUMWh	Dec. 31, 2020USD ($)MMBTUMWh
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 1,326
Derivative assets	6	$ 1
Derivative liabilities	$ 242	$ 173
Commodity | Natural Gas
Derivatives, Fair Value [Line Items]
Derivative nonmonetary volume | MMBTU	(2)	(1)
Commodity | Power
Derivatives, Fair Value [Line Items]
Derivative nonmonetary volume | MWh	(17)	(8)
Interest Rate Swap | Interest
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 1,326	$ 1,600
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative assets	2	0
Derivative liabilities	8	23
Designated as Hedging Instrument | Interest Rate Contract Current
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Derivative liabilities	5	8
Designated as Hedging Instrument | Interest Rate Contract Non Current
Derivatives, Fair Value [Line Items]
Derivative assets	2	0
Derivative liabilities	3	15
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative assets	4	1
Derivative liabilities	234	150
Not Designated as Hedging Instrument | Interest Rate Contract Current
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Derivative liabilities	17	25
Not Designated as Hedging Instrument | Interest Rate Contract Non Current
Derivatives, Fair Value [Line Items]
Derivative assets	4	1
Derivative liabilities	38	81
Not Designated as Hedging Instrument | Commodity Contract Current
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Derivative liabilities	24	5
Not Designated as Hedging Instrument | Commodity Contract Long-Term
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Derivative liabilities	$ 155	$ 39

Accounting for Derivative Ins_4

Accounting for Derivative Instruments and Hedging Activities - Offsetting (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	$ (242)	$ (173)
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets	6	1
Gross Amounts of Recognized Assets/Liabilities	(236)	(172)
Derivative Instruments	0	0
Net Amount	(236)	(172)
Commodity contracts
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	(179)	(44)
Derivative Instruments	0	0
Net Amount	(179)	(44)
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets/Liabilities	(179)	(44)
Derivative Instruments	0	0
Net Amount	(179)	(44)
Interest rate contracts
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	(63)	(129)
Derivative Instruments	5	0
Net Amount	(58)	(129)
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets	6	1
Derivative Instruments	(5)
Net Amount	1	1
Gross Amounts of Recognized Assets/Liabilities	(57)	(128)
Derivative Instruments	0	0
Net Amount	$ (57)	$ (128)

Accounting for Derivative Ins_5

Accounting for Derivative Instruments and Hedging Activities - AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Mark-to-market of cash flow hedge accounting contracts	$ 22	$ 2	$ 8
Losses expected to be realized from OCL during the next 12 months	(9)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated OCL beginning balance	(35)	(37)	(45)
Reclassified from accumulated OCL to income due to realization of previously deferred amounts	11	11	22
Mark-to-market of cash flow hedge accounting contracts	11	(9)	(14)
Accumulated OCL ending balance	(13)	(35)	(37)
Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated OCL beginning balance	(2)	0
Accumulated OCL ending balance	0	(2)	0
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated OCL beginning balance	(33)	(37)
Accumulated OCL ending balance	$ (13)	$ (33)	$ (37)

Accounting for Derivative Ins_6

Accounting for Derivative Instruments and Hedging Activities - Impact on Statement of Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain (loss) on derivatives	$ 22	$ 2	$ 7
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain (loss) on derivatives	53	(38)	(65)
Commodity Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain (loss) on derivatives	$ (83)	$ (4)	$ (9)

Intangible Assets - Components

Intangible Assets - Components Subject to Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	$ 3,104	$ 1,857	$ 1,822
Finite-lived Intangible Assets Acquired		23
Net carrying amount ending balance	3,104	1,857	1,822
Less accumulated amortization	(605)	(487)
Ending balance	2,499	1,370
Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	1,328
Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	(81)
Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		12
PPAs
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	2,985	1,661	1,630
Finite-lived Intangible Assets Acquired		23
Net carrying amount ending balance	2,985	1,661	1,630
Less accumulated amortization	(566)	(431)
Ending balance	2,419	1,230
PPAs | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	1,324
PPAs | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
PPAs | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		8
Leasehold Rights
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	86	86	86
Finite-lived Intangible Assets Acquired		0
Net carrying amount ending balance	86	86	86
Less accumulated amortization	(30)	(26)
Ending balance	56	60
Leasehold Rights | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Leasehold Rights | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Leasehold Rights | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		0
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	0	66	66
Finite-lived Intangible Assets Acquired		0
Net carrying amount ending balance	0	66	66
Less accumulated amortization	0	(11)
Ending balance	0	55
Customer Relationships | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Customer Relationships | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	(66)
Customer Relationships | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		0
Customer Contracts
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	0	15	15
Finite-lived Intangible Assets Acquired		0
Net carrying amount ending balance	0	15	15
Less accumulated amortization	0	(11)
Ending balance	0	4
Customer Contracts | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Customer Contracts | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	(15)
Customer Contracts | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		0
Emission Allowances
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	17	17	17
Finite-lived Intangible Assets Acquired		0
Net carrying amount ending balance	17	17	17
Less accumulated amortization	(3)	(3)
Ending balance	14	14
Emission Allowances | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Emission Allowances | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	0
Emission Allowances | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		0
Other
Finite-lived Intangible Assets [Roll Forward]
Net carrying amount beginning balance	16	12	8
Finite-lived Intangible Assets Acquired		0
Net carrying amount ending balance	16	12	$ 8
Less accumulated amortization	(6)	(5)
Ending balance	10	7
Other | Acquisitions
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	4
Other | Reclassified to held for sale
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	$ 0
Other | Other
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired		$ 4

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 143	$ 91	$ 73
Contract amortization expense	135	$ 88	$ 72
2022	158
2023	155
2024	153
2025	153
2026	$ 153

Asset Impairments Asset Impairm

Asset Impairments Asset Impairments (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses				$ 6	$ 24	$ 33
Other-than-temporary impairment loss on investment				0	8	$ 0
Renewables
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses		$ 14
Other-than-temporary impairment loss on investment	$ 8
Thermal
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses			$ 19
Property, Plant and Equipment
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses				$ 6	$ 24

Long-term Debt - Short and Long

Long-term Debt - Short and Long-term Borrowings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Nov. 30, 2021	Oct. 01, 2021	Mar. 09, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 7,779,000,000				$ 7,044,000,000
Less current maturities	(773,000,000)				(385,000,000)
Less net debt issuance costs	(71,000,000)				(79,000,000)
Add premiums	4,000,000				5,000,000
Total long-term debt	6,939,000,000				6,585,000,000
Intercompany Note with Clearway Energy, Inc.
Debt Instrument [Line Items]
Total debt	$ 1,000,000				1,000,000
Interest rate, percentage	1.49%
2025 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 0				600,000,000
Interest rate, percentage	5.75%
2026 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 0				350,000,000
Interest rate, percentage	5.00%
2028 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 850,000,000				850,000,000
Interest rate, percentage	4.75%
2031 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 925,000,000				0
Interest rate, percentage	375.00%			3.75%
2032 Senior Notes
Debt Instrument [Line Items]
Total debt	$ 350,000,000				0
Interest rate, percentage	375.00%		375.00%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate, percentage	1.75%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Total debt	$ 245,000,000				0
Bridge Loan, Due 2022 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Total debt	$ 335,000,000	$ 335,000,000			0
Basis spread on variable rate	1.00%
Agua Caliente Solar LLC, due 2037
Debt Instrument [Line Items]
Total debt	$ 684,000,000				0
Alta Wind Asset Management LLC, due 2031
Debt Instrument [Line Items]
Total debt	$ 13,000,000				14,000,000
Alta Wind Asset Management LLC, due 2031 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	2.625%
Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Total debt	$ 756,000,000				800,000,000
Alta Wind Realty Investments LLC, due 2031
Debt Instrument [Line Items]
Total debt	$ 24,000,000				25,000,000
Interest rate, percentage	700.00%
Borrego, due 2024 and 2038
Debt Instrument [Line Items]
Total debt	$ 54,000,000				57,000,000
Buckthorn Solar, due 2025
Debt Instrument [Line Items]
Total debt	$ 123,000,000				126,000,000
Buckthorn Solar, due 2025 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Carlsbad Energy Holdings LLC, due 2027
Debt Instrument [Line Items]
Total debt	$ 136,000,000				156,000,000
Carlsbad Energy Holdings LLC, due 2027 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.625%
Carlsbad Energy Holdings LLC, due 2038
Debt Instrument [Line Items]
Total debt	$ 407,000,000				407,000,000
Interest rate, percentage	412.00%
Carlsbad Holdco, due 2038
Debt Instrument [Line Items]
Total debt	$ 205,000,000				210,000,000
Interest rate, percentage	4.21%
CVSR, due 2037
Debt Instrument [Line Items]
Total debt	$ 652,000,000				675,000,000
CVSR Holdco Notes, due 2037
Debt Instrument [Line Items]
Total debt	$ 169,000,000				176,000,000
Interest rate, percentage	4.68%
DG-CS Master Borrower LLC, due 2040
Debt Instrument [Line Items]
Total debt	$ 441,000,000				467,000,000
Interest rate, percentage	3.51%
Duquesne, due 2059 (d)
Debt Instrument [Line Items]
Total debt	$ 0				95,000,000
Interest rate, percentage	4.62%
El Segundo Energy Center, due 2023
Debt Instrument [Line Items]
Total debt	$ 193,000,000				250,000,000
Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037
Debt Instrument [Line Items]
Total debt	0				327,000,000
Kawailoa Solar Portfolio LLC, due 2026
Debt Instrument [Line Items]
Total debt	$ 78,000,000				81,000,000
Kawailoa Solar Portfolio LLC, due 2026 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.375%
Laredo Ridge, due 2028
Debt Instrument [Line Items]
Total debt	$ 72,000,000				78,000,000
Laredo Ridge, due 2028 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	2.125%
Marsh Landing, due 2023
Debt Instrument [Line Items]
Total debt	$ 84,000,000				146,000,000
Marsh Landing, due 2023 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	2.375%
NIMH Solar, due 2024
Debt Instrument [Line Items]
Total debt	$ 176,000,000				191,000,000
NIMH Solar, due 2024 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Oahu Solar Holdings LLC, due 2026
Debt Instrument [Line Items]
Total debt	$ 86,000,000				89,000,000
Oahu Solar Holdings LLC, due 2026 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.375%
Rosie Class B LLC, due 2027
Debt Instrument [Line Items]
Total debt	$ 78,000,000				80,000,000
Rosie Class B LLC, due 2027 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Tapestry, due 2031
Debt Instrument [Line Items]
Total debt	$ 85,000,000				143,000,000
Tapestry, due 2031 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.375%
Utah Solar Holdings, due 2036
Debt Instrument [Line Items]
Total debt	$ 273,000,000				290,000,000
Interest rate, percentage	3.59%
Walnut Creek, due 2023
Debt Instrument [Line Items]
Total debt	$ 74,000,000				126,000,000
Walnut Creek, due 2023 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
WCEP Holdings, LLC, due 2023
Debt Instrument [Line Items]
Total debt	$ 30,000,000				35,000,000
WCEP Holdings, LLC, due 2023 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Other
Debt Instrument [Line Items]
Total debt	$ 180,000,000				199,000,000
Subtotal project-level debt
Debt Instrument [Line Items]
Total debt	$ 5,073,000,000				$ 5,243,000,000
Rosie Class B LLC, due 2027 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Letter of Credit | Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	$ 83,000,000
Letter of Credit | Agua Caliente Solar LLC, due 2037
Debt Instrument [Line Items]
Letters of credit outstanding	45,000,000
Letter of Credit | Alta Wind Asset Management LLC, due 2031
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Letters of credit outstanding	34,000,000
Letter of Credit | Alta Wind Realty Investments LLC, due 2031
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Borrego, due 2024 and 2038
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Buckthorn Solar, due 2025
Debt Instrument [Line Items]
Letters of credit outstanding	21,000,000
Letter of Credit | Carlsbad Energy Holdings LLC, due 2027
Debt Instrument [Line Items]
Letters of credit outstanding	62,000,000
Letter of Credit | Carlsbad Energy Holdings LLC, due 2038
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Carlsbad Holdco, due 2038
Debt Instrument [Line Items]
Letters of credit outstanding	6,000,000
Letter of Credit | CVSR, due 2037
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | CVSR Holdco Notes, due 2037
Debt Instrument [Line Items]
Letters of credit outstanding	13,000,000
Letter of Credit | DG-CS Master Borrower LLC, due 2040
Debt Instrument [Line Items]
Letters of credit outstanding	30,000,000
Letter of Credit | Duquesne, due 2059 (d)
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | El Segundo Energy Center, due 2023
Debt Instrument [Line Items]
Letters of credit outstanding	138,000,000
Letter of Credit | Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Kawailoa Solar Portfolio LLC, due 2026
Debt Instrument [Line Items]
Letters of credit outstanding	14,000,000
Letter of Credit | Laredo Ridge, due 2028
Debt Instrument [Line Items]
Letters of credit outstanding	3,000,000
Letter of Credit | Marsh Landing, due 2023
Debt Instrument [Line Items]
Letters of credit outstanding	46,000,000
Letter of Credit | NIMH Solar, due 2024
Debt Instrument [Line Items]
Letters of credit outstanding	10,000,000
Letter of Credit | Oahu Solar Holdings LLC, due 2026
Debt Instrument [Line Items]
Letters of credit outstanding	10,000,000
Letter of Credit | Rosie Class B LLC, due 2027
Debt Instrument [Line Items]
Letters of credit outstanding	17,000,000
Letter of Credit | Tapestry, due 2031
Debt Instrument [Line Items]
Letters of credit outstanding	12,000,000
Letter of Credit | Utah Solar Holdings, due 2036
Debt Instrument [Line Items]
Letters of credit outstanding	10,000,000
Letter of Credit | Walnut Creek, due 2023
Debt Instrument [Line Items]
Letters of credit outstanding	116,000,000
Letter of Credit | WCEP Holdings, LLC, due 2023
Debt Instrument [Line Items]
Letters of credit outstanding	0
Letter of Credit | Other
Debt Instrument [Line Items]
Letters of credit outstanding	$ 201,000,000
Minimum | Agua Caliente Solar LLC, due 2037
Debt Instrument [Line Items]
Interest rate, percentage	239.50%
Minimum | Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Interest rate, percentage	5.696%
Minimum | CVSR, due 2037
Debt Instrument [Line Items]
Interest rate, percentage	2.339%
Minimum | El Segundo Energy Center, due 2023 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.875%
Maximum | Agua Caliente Solar LLC, due 2037
Debt Instrument [Line Items]
Interest rate, percentage	363.30%
Maximum | Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Interest rate, percentage	7.015%
Maximum | CVSR, due 2037
Debt Instrument [Line Items]
Interest rate, percentage	3.775%
Maximum | El Segundo Energy Center, due 2023 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%

Long-term Debt - Narrative (Det

Long-term Debt - Narrative (Details)

Dec. 15, 2021USD ($)

Mar. 10, 2021USD ($)

Nov. 02, 2020USD ($)

Sep. 30, 2020USD ($)

Sep. 01, 2020USD ($)

Jun. 01, 2020USD ($)

May 21, 2020USD ($)

Jan. 03, 2020USD ($)

Dec. 20, 2019USD ($)

Oct. 31, 2021USD ($)

Mar. 31, 2022

Dec. 31, 2022

Dec. 31, 2022

Dec. 31, 2024

Dec. 31, 2021USD ($)

Dec. 31, 2020USD ($)

Dec. 31, 2019USD ($)

Nov. 30, 2021USD ($)

Oct. 01, 2021USD ($)

Mar. 11, 2021USD ($)

Mar. 09, 2021USD ($)

Feb. 03, 2021USD ($)

Dec. 21, 2020USD ($)

Feb. 18, 2020USD ($)

Debt Instrument [Line Items]

Total debt

$ 7,779,000,000

$ 7,044,000,000

Proceeds from the revolving credit facility

622,000,000

265,000,000

$ 152,000,000

Payments for the revolving credit facility

377,000,000

265,000,000

152,000,000

Loss on debt extinguishment

53,000,000

24,000,000

$ 16,000,000

Long-term debt

8,201,000,000

DG-CS Master Borrower LLC

Debt Instrument [Line Items]

Derivative Liability

$ (42,000,000)

CS4 Borrower | Construction Loans | Renew CS4 Borrower LLC

Debt Instrument [Line Items]

Debt instrument, face amount

97,000,000

CS4 Borrower | Bridge Loan | Renew CS4 Borrower LLC

Debt Instrument [Line Items]

Debt instrument, face amount

90,000,000

CS4 Borrower | Letter of Credit | Renew CS4 Borrower LLC

Debt Instrument [Line Items]

Debt instrument, face amount

$ 5,000,000

CS4 Borrower | London Interbank Offered Rate (LIBOR) | Renew CS4 Borrower LLC

Debt Instrument [Line Items]

Basis spread on variable rate

2.00%

Chestnut Borrower Credit Agreement | Letter of Credit | Chestnut Borrower, LLC

Debt Instrument [Line Items]

Debt instrument, face amount

$ 8,000,000

Chestnut Borrower Credit Agreement | Loans Payable | Chestnut Borrower, LLC

Debt Instrument [Line Items]

Debt instrument, face amount

120,000,000

DG-CS Master Borrower LLC Financing Arrangement | DG-CS Master Borrower LLC

Debt Instrument [Line Items]

Interest rate, percentage

3.51%

DG-CS Master Borrower LLC Financing Arrangement | Letter of Credit | DG-CS Master Borrower LLC

Debt Instrument [Line Items]

Proceeds from the revolving credit facility

$ 30,000,000

DG-CS Master Borrower LLC Financing Arrangement | Loans Payable | DG-CS Master Borrower LLC

Debt Instrument [Line Items]

Proceeds from the revolving credit facility

467,000,000

Chestnut Borrower, LLC

Debt Instrument [Line Items]

Aggregate principal amount repurchased

107,000,000

Renew Solar CS 4 Borrower LLC

Debt Instrument [Line Items]

Aggregate principal amount repurchased

102,000,000

DGPV 4 Borrower LLC

Debt Instrument [Line Items]

Aggregate principal amount repurchased

92,000,000

Puma Class B LLC

Debt Instrument [Line Items]

Aggregate principal amount repurchased

$ 73,000,000

Utah Solar Holdings, due 2036

Debt Instrument [Line Items]

Total debt

$ 273,000,000

290,000,000

Interest rate, percentage

3.59%

Utah Solar Holdings, due 2036 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 10,000,000

Utah Solar Holdings, due 2036 | Letter of Credit | Utah Solar Holdings, LLC

Debt Instrument [Line Items]

Debt instrument, face amount

$ 16,000,000

Utah Solar Holdings, due 2036 | Notes Payable, Other Payables | Utah Solar Holdings, LLC

Debt Instrument [Line Items]

Proceeds from the revolving credit facility

$ 296,000,000

Interest rate, percentage

3.59%

Aggregate principal amount repurchased

$ 247,000,000

Derivative Liability

33,000,000

Utah Solar Holdings, due 2036 | Notes Payable, Other Payables | Utah Solar Holdings, LLC | Clearway Energy Operating LLC | Affiliated Entity

Debt Instrument [Line Items]

Decrease from distributions to noncontrolling interest holders

$ 9,000,000

NIMH Solar LLC Financing Arrangement | Letter of Credit | NIMH Solar LLC

Debt Instrument [Line Items]

Proceeds from the revolving credit facility

$ 16,000,000

NIMH Solar LLC Financing Arrangement | Loans Payable | Clearway Energy Operating LLC | Affiliated Entity

Debt Instrument [Line Items]

Decrease from distributions to noncontrolling interest holders

45,000,000

NIMH Solar LLC Financing Arrangement | Loans Payable | NIMH Solar LLC

Debt Instrument [Line Items]

Proceeds from the revolving credit facility

193,000,000

Proceeds from issuance of long-term debt — external

35,000,000

NIMH Solar LLC Financing Arrangement | London Interbank Offered Rate (LIBOR) | Loans Payable | Through Third Party Anniversary of Closing

Debt Instrument [Line Items]

Interest rate, percentage

2.00%

NIMH Solar LLC Financing Arrangement | London Interbank Offered Rate (LIBOR) | Loans Payable | After Third Party Anniversary of Closing

Debt Instrument [Line Items]

Interest rate, percentage

2.125%

Subtotal project-level debt

Debt Instrument [Line Items]

Total debt

$ 5,073,000,000

5,243,000,000

Subtotal project-level debt | Loans Payable | Alpine

Debt Instrument [Line Items]

Aggregate principal amount repurchased

158,000,000

Subtotal project-level debt | Loans Payable | Blythe

Debt Instrument [Line Items]

Aggregate principal amount repurchased

158,000,000

Subtotal project-level debt | Loans Payable | Roadrunner

Debt Instrument [Line Items]

Aggregate principal amount repurchased

$ 158,000,000

Duquesne, due 2059 (d)

Debt Instrument [Line Items]

Total debt

$ 0

95,000,000

Interest rate, percentage

4.62%

Duquesne, due 2059 (d) | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 0

Oahu Solar Holdings LLC, due 2026

Debt Instrument [Line Items]

Total debt

86,000,000

89,000,000

Oahu Solar Holdings LLC, due 2026 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 10,000,000

Oahu Solar Holdings LLC, due 2026 | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Basis spread on variable rate

1.375%

Kawailoa Solar Portfolio LLC, due 2026

Debt Instrument [Line Items]

Total debt

$ 78,000,000

81,000,000

Kawailoa Solar Portfolio LLC, due 2026 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 14,000,000

Kawailoa Solar Portfolio LLC, due 2026 | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Basis spread on variable rate

1.375%

Tapestry, due 2031

Debt Instrument [Line Items]

Total debt

$ 85,000,000

143,000,000

Aggregate principal amount repurchased

$ 53,000,000

Tapestry, due 2031 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 12,000,000

Tapestry, due 2031 | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Basis spread on variable rate

1.375%

Carlsbad Energy Holdings LLC, due 2038

Debt Instrument [Line Items]

Total debt

$ 407,000,000

407,000,000

Interest rate, percentage

412.00%

Carlsbad Energy Holdings LLC, due 2038 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 0

Rosie Class B LLC, due 2027

Debt Instrument [Line Items]

Total debt

78,000,000

80,000,000

Debt instrument, face amount

80,000,000

Rosie Class B LLC, due 2027 | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

17,000,000

Bridge credit agreement, borrowing amount

$ 23,000,000

Rosie Class B LLC, due 2027 | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Basis spread on variable rate

1.75%

Rosie Class B LLC, due 2027 | London Interbank Offered Rate (LIBOR) | Forecast

Debt Instrument [Line Items]

Basis spread on variable rate

2.00%

Rosie TargetCo LLC Construction Loan | Construction Loans

Debt Instrument [Line Items]

Bridge credit agreement, borrowing amount

$ 91,000,000

Rosie TargetCo LLC Construction Loan | Bridge Loan

Debt Instrument [Line Items]

Bridge credit agreement, borrowing amount

24,000,000

Rosie TargetCo LLC Construction Loan | Investment Tax Credit Loan

Debt Instrument [Line Items]

Bridge credit agreement, borrowing amount

$ 132,000,000

Payments for long-term debt

$ 130,000,000

Bridge Loan, Due 2022 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate

Debt Instrument [Line Items]

Total debt

$ 335,000,000

0

$ 335,000,000

Basis spread on variable rate

1.00%

Bridge Loan, Due 2022 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Forecast

Debt Instrument [Line Items]

Basis spread on variable rate

1.25%

Bridge Loan, Due 2022 | Base Rate | Forecast

Debt Instrument [Line Items]

Basis spread on variable rate

0.00%

0.25%

Revolving Credit Facility

Debt Instrument [Line Items]

Outstanding borrowings

$ 245,000,000

Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility

Debt Instrument [Line Items]

Leverage ratio

6

Collateral Amount

$ 40,000,000

Borrower leverage ratio

5.50

Covenant borrower interest coverage ratio

175.00%

Proceeds from the revolving credit facility

$ 622,000,000

Payments for the revolving credit facility

$ 377,000,000

Interest rate, percentage

1.75%

Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | Letter of Credit

Debt Instrument [Line Items]

Letters of credit outstanding

$ 83,000,000

Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Total debt

245,000,000

0

4.75% Senior Notes due in 2028 | Notes Payable, Other Payables

Debt Instrument [Line Items]

Interest rate, percentage

4.75%

Debt instrument, repurchased face amount

$ 250,000,000

Debt instrument, redemption price, percentage

102.00%

4.75% Senior Notes due in 2028 | Notes Payable, Other Payables | Clearway Energy, Inc.

Debt Instrument [Line Items]

Repayment of debt

$ 45,000,000

5.375% Senior Notes due in 2024

Debt Instrument [Line Items]

Debt instrument, repurchased face amount

$ 88,000,000

Debt instrument, redemption price, percentage

102.70%

Debt instrument, repurchase amount

$ 90,000,000

Loss on debt extinguishment

$ 3,000,000

Pinnacle Repowering Partnership HoldCo LLC | Construction Loans

Debt Instrument [Line Items]

Total debt

79,000,000

Debt instrument, face amount

$ 126,000,000

Aggregate principal amount repurchased

$ 117,000,000

Pinnacle Repowering Partnership HoldCo LLC | London Interbank Offered Rate (LIBOR) | Construction Loans

Debt Instrument [Line Items]

Basis spread on variable rate

1.00%

2032 Senior Notes

Debt Instrument [Line Items]

Total debt

$ 350,000,000

0

Long-term debt — affiliate

$ 350,000,000

Interest rate, percentage

375.00%

375.00%

2026 Senior Notes

Debt Instrument [Line Items]

Total debt

$ 0

350,000,000

Interest rate, percentage

5.00%

Debt instrument, repurchased face amount

$ 350,000,000

Repurchased face amount, optionally exercised remaining principal, not validly tendered and purchased In tender offer

227,000,000

Debt instrument, redemption price, percentage

103.00%

Debt instrument, repurchase amount

$ 359,000,000

Loss on debt extinguishment

$ 9,000,000

Write off of deferred debt issuance cost

$ 3,000,000

2031 Senior Notes

Debt Instrument [Line Items]

Total debt

$ 925,000,000

0

Long-term debt — affiliate

$ 925,000,000

Interest rate, percentage

375.00%

3.75%

2025 Senior Notes

Debt Instrument [Line Items]

Total debt

$ 0

600,000,000

Interest rate, percentage

5.75%

Debt instrument, repurchased face amount

$ 600,000,000

Repurchased face amount, optionally exercised remaining principal, not validly tendered and purchased In tender offer

$ 183,000,000

Debt instrument, redemption price, percentage

106.00%

Debt instrument, repurchase amount

$ 636,000,000

Loss on debt extinguishment

(36,000,000)

Loss on extinguishment of deferred financing fees

5,000,000

Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037

Debt Instrument [Line Items]

Debt instrument, face amount

$ 716,000,000

Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037 | Minimum

Debt Instrument [Line Items]

Interest rate, percentage

2.395%

Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037 | Maximum

Debt Instrument [Line Items]

Interest rate, percentage

3.633%

Intercompany Note with Clearway Energy, Inc.

Debt Instrument [Line Items]

Total debt

$ 1,000,000

$ 1,000,000

Interest rate, percentage

1.49%

Debt instrument, face amount

$ 1,000,000

$ 3,000,000

3.25% Convertible Notes due 2020

Debt Instrument [Line Items]

Repayments of convertible debt

$ 45,000,000

Long-term Debt - Interest Rate

Long-term Debt - Interest Rate Swaps (Details) $ in Millions	Dec. 31, 2021USD ($)
Debt Instrument [Line Items]
Derivative notional amount	$ 1,326
Avra Valley | Maturity - November 30, 2030
Debt Instrument [Line Items]
Percentage of principal	88.00%
Fixed interest rate	2.33%
Derivative notional amount	$ 35
AWAM | Maturity - May 15, 2031
Debt Instrument [Line Items]
Percentage of principal	100.00%
Fixed interest rate	2.47%
Derivative notional amount	$ 13
Borrego | Maturity - December 31, 2024
Debt Instrument [Line Items]
Percentage of principal	100.00%
Fixed interest rate	0.476%
Derivative notional amount	$ 10
Buckthorn Solar | Maturity - December 31, 2041
Debt Instrument [Line Items]
Percentage of principal	81.00%
Derivative notional amount	$ 100
Carlsbad Drop Down | Maturity - September 30, 2027
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 136
El Segundo
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 193
Kansas South | Maturity - December 31, 2030
Debt Instrument [Line Items]
Percentage of principal	75.00%
Fixed interest rate	2.368%
Derivative notional amount	$ 15
Kawailoa Solar Holdings LLC Debt | Maturity - October 31, 2040
Debt Instrument [Line Items]
Percentage of principal	94.00%
Derivative notional amount	$ 74
Laredo Ridge | Maturity - December 21, 2028
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 72
Marsh Landing | Maturity - June 30, 2023
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 84
NIMH Solar LLC
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 176
Oahu Solar | Maturity - October 31, 2040
Debt Instrument [Line Items]
Percentage of principal	96.00%
Derivative notional amount	$ 83
Rosie Class B LLC, due 2027 | Maturity - July 29, 2044
Debt Instrument [Line Items]
Percentage of principal	95.00%
Fixed interest rate	1.446%
Derivative notional amount	$ 74
South Trent | Maturity - June 30, 2028
Debt Instrument [Line Items]
Percentage of principal	90.00%
Fixed interest rate	3.847%
Derivative notional amount	$ 31
Tapestry
Debt Instrument [Line Items]
Percentage of principal	100.00%
Derivative notional amount	$ 85
Viento Funding II
Debt Instrument [Line Items]
Percentage of principal	100.00%
Fixed interest rate	3.03%
Derivative notional amount	$ 29
Viento Funding II | Maturity - June 30, 2028
Debt Instrument [Line Items]
Percentage of principal	100.00%
Fixed interest rate	4.985%
Derivative notional amount	$ 21
Walnut Creek | Maturity - May 31, 2023
Debt Instrument [Line Items]
Percentage of principal	90.00%
Fixed interest rate	3.543%
Derivative notional amount	$ 66
WCEP Holdings | Maturity - May 31, 2023
Debt Instrument [Line Items]
Percentage of principal	97.00%
Fixed interest rate	4.003%
Derivative notional amount	$ 29

Long-term Debt - Annual Maturit

Long-term Debt - Annual Maturities (Details) $ in Millions	Dec. 31, 2021USD ($)
Debt Instrument [Line Items]
2022	$ 772
2023	709
2024	392
2025	369
2026	422
Thereafter	5,537
Total	8,201
Thermal
Debt Instrument [Line Items]
2025	4
2026	15
Thereafter	$ 404

Members' Equity (Details)

Members' Equity (Details) - $ / shares	Feb. 17, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Capital Unit, Class A and Class B
Class of Stock [Line Items]
Distributions paid (in dollars per share)		$ 0.3400	$ 0.3345	$ 0.3290	$ 0.3240
Capital Unit, Class C and Class D
Class of Stock [Line Items]
Distributions paid (in dollars per share)		$ 0.3400	$ 0.3345	$ 0.3290	$ 0.3240
Subsequent Event
Class of Stock [Line Items]
Common stock dividends declared (in dollars per share)	$ 0.3468

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting
Total operating revenues				$ 1,286	$ 1,199	$ 1,032
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below				451	366	337
Depreciation, amortization and accretion				509	428	401
Impairment losses				6	24	33
General and administrative				38	33	27
Transaction and integration costs				7	9	3
Development costs				6	5	5
Operating Income				269	334	226
Equity in earnings of unconsolidated affiliates				32	7	83
Impairment loss on investment				0	(8)	0
Gain on sale of unconsolidated affiliate				0	49	0
Other income, net				3	4	9
Loss on debt extinguishment				(53)	(24)	(16)
Interest expense				(312)	(414)	(403)
Loss Before Income Taxes				(61)	(52)	(101)
Income tax expense				2	0	0
Net Loss				(63)	(52)	(101)
Net Income (Loss) Attributable to Clearway Energy LLC				110	61	$ (30)
Equity investment in affiliates	$ 741			381	741
Capital expenditures	106			119	106
Total assets	10,488			$ 12,718	$ 10,488
Renewables
Segment Reporting
Impairment losses		$ 14
Impairment loss on investment	(8)
Thermal
Segment Reporting
Impairment losses			$ 19
SCE | Conventional
Segment Reporting
Customer's percentage of total revenue				17.00%	18.00%	21.00%
SCE | Renewables
Segment Reporting
Customer's percentage of total revenue				16.00%	16.00%	19.00%
PG&E | Conventional
Segment Reporting
Customer's percentage of total revenue				10.00%	10.00%	12.00%
PG&E | Renewables
Segment Reporting
Customer's percentage of total revenue				13.00%	8.00%	10.00%
Operating Segments
Segment Reporting
Total operating revenues				$ 1,286	$ 1,199	$ 1,032
Operating Segments | Conventional
Segment Reporting
Total operating revenues				441	437	346
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below				90	90	60
Depreciation, amortization and accretion				132	132	103
Impairment losses				0	0	0
General and administrative				0	0	0
Transaction and integration costs				0	0	0
Development costs				0	0	0
Operating Income				219	215	183
Equity in earnings of unconsolidated affiliates				6	8	9
Impairment loss on investment					0
Gain on sale of unconsolidated affiliate					0
Other income, net				0	1	2
Loss on debt extinguishment				0	0	0
Interest expense				(53)	(84)	(59)
Loss Before Income Taxes				172
Income tax expense				0
Net Loss				172	140	135
Net Income (Loss) Attributable to Clearway Energy LLC				172	140	135
Equity investment in affiliates	90			86	90
Capital expenditures	12			12	12
Total assets	2,575			2,442	2,575
Operating Segments | Renewables
Segment Reporting
Total operating revenues				641	569	485
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below				229	147	143
Depreciation, amortization and accretion				354	264	271
Impairment losses				6	24	14
General and administrative				0	0	1
Transaction and integration costs				0	0	0
Development costs				0	0	0
Operating Income				52	134	56
Equity in earnings of unconsolidated affiliates				26	(1)	74
Impairment loss on investment					(8)
Gain on sale of unconsolidated affiliate					0
Other income, net				2	4	6
Loss on debt extinguishment				(1)	(21)	(1)
Interest expense				(142)	(216)	(239)
Loss Before Income Taxes				(63)
Income tax expense				2
Net Loss				(65)	(108)	(104)
Net Income (Loss) Attributable to Clearway Energy LLC				109	4	(33)
Equity investment in affiliates	651			295	651
Capital expenditures	44			77	44
Total assets	7,157			9,603	7,157
Operating Segments | Thermal
Segment Reporting
Total operating revenues				204	193	201
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below				134	131	134
Depreciation, amortization and accretion				23	32	27
Impairment losses				0	0	19
General and administrative				4	3	3
Transaction and integration costs				0	0	0
Development costs				4	5	5
Operating Income				39	22	13
Equity in earnings of unconsolidated affiliates				0	0	0
Impairment loss on investment					0
Gain on sale of unconsolidated affiliate					0
Other income, net				1	0	0
Loss on debt extinguishment				0	0	0
Interest expense				(18)	(19)	(18)
Loss Before Income Taxes				22
Income tax expense				0
Net Loss				22	3	(5)
Net Income (Loss) Attributable to Clearway Energy LLC				22	3	(5)
Equity investment in affiliates	0			0	0
Capital expenditures	50			29	50
Total assets	627			631	627
Corporate
Segment Reporting
Total operating revenues				0	0	0
Cost of operations, exclusive of depreciation, amortization and accretion shown separately below				(2)	(2)	0
Depreciation, amortization and accretion				0	0	0
Impairment losses				0	0	0
General and administrative				34	30	23
Transaction and integration costs				7	9	3
Development costs				2	0	0
Operating Income				(41)	(37)	(26)
Equity in earnings of unconsolidated affiliates				0	0	0
Impairment loss on investment					0
Gain on sale of unconsolidated affiliate					49
Other income, net				0	(1)	1
Loss on debt extinguishment				(52)	(3)	(15)
Interest expense				(99)	(95)	(87)
Loss Before Income Taxes				(192)
Income tax expense				0
Net Loss				(192)	(87)	(127)
Net Income (Loss) Attributable to Clearway Energy LLC				(193)	(86)	$ (127)
Equity investment in affiliates	0			0	0
Capital expenditures	0			1	0
Total assets	$ 129			$ 42	$ 129

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
General and administrative	$ 38	$ 33	$ 27
RENOM
Related Party Transaction [Line Items]
Expenses from transactions with related party	56	37	31
Due to related party	9	10
Affiliated Entity
Related Party Transaction [Line Items]
Due to related party	2
Affiliated Entity | Administrative Services Agreements
Related Party Transaction [Line Items]
Expenses from transactions with related party	14	10	7
CEG
Related Party Transaction [Line Items]
Due to related party		2
General and administrative	$ 4	$ 2	$ 1

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Power procurement arrangements	$ 40	$ 32	$ 38
2022	7
2023	1
2024	0
2025	0
2026	0
Thereafter	0
Total	$ 8

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 27	$ 19	$ 13
Variable lease cost	15	9	8
Total lease cost	42	28	$ 21
ASSETS
Right-of-use assets, net	$ 550	$ 337
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Liabilities [Abstract]
Short-term lease liability - operating leases	$ 8	$ 8
Long-term lease liabilities	561	345
Total lease liabilities	$ 569	$ 353
Weighted average remaining lease term	28 years	25 years
Weighted average discount rate	3.50%	4.30%
Cash paid for operating leases	$ 26	$ 19

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	Dec. 31, 2021USD ($)renewalOption	Dec. 31, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liability	$ 590
Right-of-use assets, net	$ 550	$ 337
Weighted average discount rate	3.50%	4.30%
Oahu Solar Partnership
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liability		$ 20
Right-of-use assets, net	$ 18
Lease period	35 years
Number of renewal options | renewalOption	2
Renewal period	5 years
Rosamond Central Drop Down
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liability	$ 12
Right-of-use assets, net	$ 11
Lease period	35 years
Number of renewal options | renewalOption	2
Renewal period	5 years

Leases - Maturities of Operatin

Leases - Maturities of Operating Lease Liabilities (Details) $ in Millions	Dec. 31, 2021USD ($)
Lessee, Lease, Description [Line Items]
2022	$ 28
2023	28
2024	28
2025	28
2026	29
Thereafter	801
Total lease payments	942
Less imputed interest	(352)
Total lease liability - operating leases	590
Thermal
Lessee, Lease, Description [Line Items]
2022	1
2023	1
2024	1
2025	1
2026	1
Thereafter	$ 31

Leases - Revenue Related to Lea

Leases - Revenue Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Lease revenue	$ 741	$ 589	$ 537
Energy Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	727	566	516
Capacity Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	455	451	348
Operating revenue
Disaggregation of Revenue [Line Items]
Lease revenue	1,182	1,017	864
Conventional | Energy Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	9	10	5
Conventional | Capacity Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	455	451	348
Conventional | Operating revenue
Disaggregation of Revenue [Line Items]
Lease revenue	464	461	353
Renewables | Energy Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	716	554	509
Renewables | Capacity Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	0	0	0
Renewables | Operating revenue
Disaggregation of Revenue [Line Items]
Lease revenue	716	554	509
Thermal | Energy Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	2	2	2
Thermal | Capacity Revenue
Disaggregation of Revenue [Line Items]
Lease revenue	0	0	0
Thermal | Operating revenue
Disaggregation of Revenue [Line Items]
Lease revenue	$ 2	$ 2	$ 2

Leases - Lessor - Minimum Futur

Leases - Lessor - Minimum Future Rent Payments Under Operating Leases (Details) $ in Millions	Dec. 31, 2021USD ($)
Segment Reporting
2022	$ 453
2023	261
2024	106
2025	107
2026	108
Thereafter	1,390
Total lease payments	$ 2,425

Leases - Property, Plant and Eq

Leases - Property, Plant and Equipment Related to Operating Leases (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 10,151	$ 9,540
Accumulated depreciation	(2,501)	(2,323)
Net property, plant and equipment	7,650	7,217
Assets not related to the Companys' operating leases
Property, Plant and Equipment [Line Items]
Property, plant and equipment	8,981	7,201
Accumulated depreciation	(2,827)	(1,964)
Net property, plant and equipment	$ 6,154	$ 5,237

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of Registrant - P/L (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Income Statements, Captions [Line Items]
Other income, net	$ 3	$ 4	$ 9
Total other expense, net	(330)	(386)	(327)
Net Income (Loss) Attributable to Clearway Energy LLC	110	61	(30)
Clearway Energy LLC
Condensed Income Statements, Captions [Line Items]
Equity in earnings (losses) of consolidated affiliates	110	61	(32)
Other income, net	0	0	2
Total other expense, net	0	0	2
Net Income (Loss) Attributable to Clearway Energy LLC	$ 110	$ 61	$ (30)

Schedule I - Condensed Financ_3

Schedule I - Condensed Financial Information of Registrant - B/S (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 179	$ 268
Total Assets	12,718	10,488
Accounts payable — affiliates	110	20
Liabilities	9,501	7,876
Contributed capital	1,495	1,723
Retained earnings (accumulated deficit)	43	(50)
Accumulated other comprehensive loss	(13)	(33)
Total Members' Equity	3,217	2,612	$ 2,173	$ 2,182
Total Liabilities and Members’ Equity	12,718	10,488
Clearway Energy LLC
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	33	119
Investment in consolidated subsidiaries	1,497	1,545
Total Assets	1,530	1,664
Accounts payable — affiliates	5	24
Liabilities	5	24
Contributed capital	1,495	1,723
Retained earnings (accumulated deficit)	43	(50)
Accumulated other comprehensive loss	(13)	(33)
Total Members' Equity	1,525	1,640
Total Liabilities and Members’ Equity	$ 1,530	$ 1,664

Schedule I - Condensed Financ_4

Schedule I - Condensed Financial Information of Registrant - CF (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 701	$ 545	$ 469
Net Cash Used in Investing Activities	(865)	(62)	(468)
Proceeds from the issuance of class C units	0	62	100
Net Cash Provided by (Used in) Financing Activities	367	(432)	(170)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	189	51	(169)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	465	414	583
Cash, Cash Equivalents and Restricted Cash at End of Period	654	465	414
Clearway Energy LLC
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	0	0	0
Investments in consolidated affiliates	202	306	(211)
Net Cash Used in Investing Activities	202	306	(211)
Transfer of funds under intercompany cash management arrangement	(20)	(65)	(5)
Payments of distributions	(268)	(211)	(155)
Net Cash Provided by (Used in) Financing Activities	(288)	(214)	(60)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(86)	92	(271)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	119	27	298
Cash, Cash Equivalents and Restricted Cash at End of Period	33	119	27
Clearway Energy LLC | Common Class C
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from the issuance of class C units	$ 0	$ 62	$ 100

Schedule I - Condensed Financ_5

Schedule I - Condensed Financial Information of Registrant - Footnotes (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)MW	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 01, 2020MW
Condensed Cash Flow Statements, Captions [Line Items]
Power generation capacity, megawatts	9,000			419
Clearway Energy LLC
Condensed Cash Flow Statements, Captions [Line Items]
Cash distributions paid | $	$ (268)	$ (211)	$ (155)
Clearway Energy LLC
Condensed Cash Flow Statements, Captions [Line Items]
Ownership percentage	57.65%
Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind
Condensed Cash Flow Statements, Captions [Line Items]
Power generation capacity, megawatts	5,000