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Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2020	Apr. 30, 2020
Class of Stock [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-36002
Entity Registrant Name	Clearway Energy, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-1777204
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 Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001567683
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Common Class A
Class of Stock [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.01
Trading Symbol	CWEN.A
Security Exchange Name	NYSE
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]
Title of 12(b) Security	Class C Common Stock, par value $0.01
Trading Symbol	CWEN
Security Exchange Name	NYSE
Entity common stock, shares outstanding		79,330,275
Common Class D
Class of Stock [Line Items]
Entity common stock, shares outstanding		42,738,750

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenues
Total operating revenues	$ 258	$ 217
Operating Costs and Expenses
Cost of operations	93	83
Depreciation, amortization and accretion	102	85
General and Administrative Expense	9	6
Transaction and integration costs	1	1
Development costs	1	1
Total operating costs and expenses	206	176
Operating Income	52	41
Other Income (Expense)
Equity in (losses) earnings of unconsolidated affiliates	(13)	3
Other income, net	2	3
Loss on debt extinguishment	(3)	0
Interest expense	(167)	(101)
Total other expense, net	(181)	(95)
Loss Before Income Taxes	(129)	(54)
Income tax benefit	(22)	(7)
Net Loss	(107)	(47)
Less: Loss attributable to noncontrolling interests	(78)	(27)
Net Loss Attributable to Clearway Energy, Inc.	$ (29)	$ (20)
Losses Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders
Losses per Weighted Average Class A and Class C Common Share - Basic and Diluted (in dollars per share)	$ (0.26)	$ (0.18)
Common Class A
Other Income (Expense)
Net Loss Attributable to Clearway Energy, Inc.	$ (9)	$ (6)
Losses Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders
Weighted average number of Class A and Class C common shares outstanding - basic and diluted (in shares)	35	35
Losses per Weighted Average Class A and Class C Common Share - Basic and Diluted (in dollars per share)	$ (0.26)	$ (0.18)
Common stock, dividends, per share, cash paid (in dollars per share)	$ 0.21	$ 0.20
Common Class C
Other Income (Expense)
Net Loss Attributable to Clearway Energy, Inc.	$ (20)	$ (14)
Losses Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders
Weighted average number of Class A and Class C common shares outstanding - basic and diluted (in shares)	79	73
Losses per Weighted Average Class A and Class C Common Share - Basic and Diluted (in dollars per share)	$ (0.26)	$ (0.18)
Common stock, dividends, per share, cash paid (in dollars per share)	$ 0.21	$ 0.20

Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (107)	$ (47)
Other Comprehensive Loss
Unrealized loss on derivatives, net of income tax benefit of $2 and $0	(12)	(2)
Other comprehensive loss	(12)	(2)
Comprehensive Loss	(119)	(49)
Less: Comprehensive loss attributable to noncontrolling interests	(84)	(28)
Comprehensive Loss Attributable to Clearway Energy, Inc.	$ (35)	$ (21)

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Unrealized loss on derivatives income tax expense (benefit)	$ (2)	$ 0

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net loss	$ (107)	$ (47)
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings (losses) of unconsolidated affiliates	13	(3)
Distributions from unconsolidated affiliates	5	11
Depreciation, amortization and accretion	102	85
Amortization of financing costs and debt discounts	4	4
Amortization of intangibles and out-of-market contracts	22	17
Loss on debt extinguishment	3	0
Right-of-use asset amortization	2	0
Changes in deferred income taxes	(22)	(7)
Changes in derivative instruments	85	28
Loss on disposal of asset components	0	2
Changes in prepaid and accrued liabilities for tolling agreements	(45)	(35)
Changes in other working capital	22	6
Net Cash Provided by Operating Activities	84	61
Cash Flows from Investing Activities
Partnership interest acquisition	0	(4)
Buyout of Wind TE Holdco noncontrolling interest	0	(19)
Capital expenditures	(40)	(16)
Return of investment from unconsolidated affiliates	12	14
Investments in unconsolidated affiliates	(7)	(4)
Proceeds from sale of assets	15	0
Insurance proceeds	3	0
Other	0	3
Net Cash Used in Investing Activities	(17)	(26)
Cash Flows from Financing Activities
Net contributions from noncontrolling interests	154	19
Net proceeds from the issuance of common stock	10	0
Payments of dividends and distributions	(42)	(39)
Proceeds from the revolving credit facility	180	0
Proceeds from the issuance of long-term debt	31	4
Payments for long-term debt - external	(437)	(304)
Net Cash Used in Financing Activities	(104)	(320)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(37)	(285)
Cash, Cash Equivalents and Restricted Cash at beginning of period	417	583
Cash, Cash Equivalents and Restricted Cash at end of period	$ 380	$ 298

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 110	$ 155
Restricted cash	270	262
Accounts receivable — trade	99	116
Accounts receivable — affiliate	1	2
Inventory	41	40
Prepayments and other current assets	33	33
Total current assets	554	608
Property, plant and equipment	6,001	6,063
Other Assets
Equity investments in affiliates	1,149	1,183
Intangible assets, net	1,406	1,428
Deferred income taxes	116	92
Right of use assets, net	221	223
Other non-current assets	108	103
Total other assets	3,000	3,029
Total Assets	9,555	9,700
Current Liabilities
Current portion of long-term debt	1,480	1,824
Accounts payable — trade		74
Accounts payable — affiliate	27	31
Derivative instruments	38	16
Accrued interest expense	60	41
Accrued expenses and other current liabilities	39	71
Total current liabilities	1,714	2,057
Other Liabilities
Long-term debt	5,081	4,956
Derivative instruments	151	76
Long-term lease liabilities	222	227
Other non-current liabilities	123	121
Total non-current liabilities	5,577	5,380
Total Liabilities	7,291	7,437
Commitments and Contingencies
Stockholders' Equity
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued	0	0
Class A, Class B, Class C and Class D common stock, $0.01 par value; 3,000,000,000 shares authorized (Class A 500,000,000, Class B 500,000,000, Class C 1,000,000,000, Class D 1,000,000,000); 199,406,906 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 79,329,761, Class D 42,738,750) at March 31, 2020 and 198,819,999 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 78,742,854, Class D 42,738,750) at December 31, 2019	1	1
Additional paid-in capital	1,922	1,936
Accumulated deficit	(101)	(72)
Accumulated other comprehensive loss	(21)	(15)
Noncontrolling interest	463	413
Total Stockholders' Equity	2,264	2,263
Total Liabilities and Stockholders' Equity	$ 9,555	$ 9,700

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Par value - preferred stock (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock issued (in shares)	0	0
Par value - common stock (in usd per share)	$ 0.01
Common stock, authorized (in shares)	3,000,000,000	3,000,000,000
Common stock issued (in shares)	199,406,906	198,819,999
Common stock outstanding (in shares)	199,406,906	198,819,999
Common Class A
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock issued (in shares)	34,599,645	34,599,645
Common stock outstanding (in shares)	34,599,645	34,599,645
Common Class B
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock issued (in shares)	42,738,750	42,738,750
Common stock outstanding (in shares)	42,738,750	42,738,750
Common Class C
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock issued (in shares)	79,329,761	78,742,854
Common stock outstanding (in shares)	79,329,761	78,742,854
Common Class D
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock issued (in shares)	42,738,750	42,738,750
Common stock outstanding (in shares)	42,738,750	42,738,750

Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Noncontrolling Interest	CEG	CEG Noncontrolling Interest	Tax Equity Investors	Tax Equity Investors Noncontrolling Interest
Balance at beginning of period at Dec. 31, 2018	$ 2,224	$ 0	$ 1	$ 1,897	$ (58)	$ (18)	$ 402
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(47)				(20)		(27)
Unrealized loss on derivatives, net of tax	(2)					(1)	(1)
Contributions, non-cash	12						12
Buyout of Wind TE Holdco noncontrolling interest	(19)			(5)			(14)
Capital contributions, net of distributions, cash										$ 19	$ 19
Common stock dividends and distributions to CEG	(39)			(22)			(17)
Balance at end of period at Mar. 31, 2019	2,145	0	1	1,870	(80)	(19)	373
Balance at beginning of period at Dec. 31, 2019	2,263	0	1	1,936	(72)	(15)	413
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(107)				(29)		(78)
Unrealized loss on derivatives, net of tax	(12)					(6)	(6)
Capital contributions, net of distributions, cash	150						150	$ 4	$ 4
Net proceeds from the issuance of common stock under the ATM	10			10
Distributions to tax equity investors, non-cash										$ (2)	$ (2)
Common stock dividends and distributions to CEG	(42)			(24)			(18)
Balance at end of period at Mar. 31, 2020	$ 2,264	$ 0	$ 1	$ 1,922	$ (101)	$ (21)	$ 463

Nature of Business	3 Months Ended
Nature of Business	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Clearway Energy, Inc., together with its consolidated subsidiaries, or the Company, is a publicly-traded energy infrastructure investor in and owner of modern, sustainable and long-term contracted assets across North America. The Company is sponsored by GIP III Zephyr Acquisition Partners, L.P. through its portfolio company, CEG. GIP is an independent fund manager that invests in infrastructure assets in energy and transport sectors. The Company’s environmentally-sound asset portfolio includes over 5,875 MW of wind, solar and natural gas-fired power generation facilities. Through this diversified and contracted portfolio, the Company endeavors to provide its investors with stable and growing dividend income. Nearly all of these assets sell substantially all of their output pursuant to long-term offtake agreements with creditworthy counterparties. The weighted average remaining contract duration of these offtake agreements was approximately 13 years as of March 31, 2020 based on CAFD. The Company also owns thermal infrastructure assets with an aggregate steam and chilled water capacity of 1,530 net MWt and electric generation capacity of 36 net MW. These thermal infrastructure assets provide steam, hot and/or chilled water, and, in some instances, electricity to commercial businesses, universities, hospitals and governmental units in multiple locations, principally through long-term contracts or pursuant to rates regulated by state utility commissions. The Company 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 the Company'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 a result of the Class C common stock issuance under the ATM during the first quarter of 2020, the Company owns 57.13% of the economic interests of Clearway Energy LLC, with CEG retaining 42.87% of the economic interests of Clearway Energy LLC as of March 31, 2020. For further discussion, see Note 9, Changes in Capital Structure. The following table represents the structure of the Company as of March 31, 2020: Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with the SEC’s regulations for interim financial information and with the instructions to Form 10-Q. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The following notes should be read in conjunction with the accounting policies and other disclosures as set forth in the notes to the consolidated financial statements included in the Company's 2019 Form 10-K. Interim results are not necessarily indicative of results for a full year. In the opinion of management, the accompanying unaudited interim consolidated financial statements contain all material adjustments consisting of normal and recurring accruals necessary to present fairly the Company's consolidated financial position as of March 31, 2020, and the results of operations, comprehensive loss and cash flows for the three months ended March 31, 2020 and 2019. PG&E Bankruptcy Update During 2019, PG&E, one of the Company's largest customers, filed for reorganization under Chapter 11 of the U.S. Bankruptcy Code in the U.S. Bankruptcy Court for the Northern District of California, or the Bankruptcy Court. On January 31, 2020, PG&E filed with the Bankruptcy Court a Chapter 11 plan of reorganization, as amended, or the PG&E Plan. The PG&E Plan provides for PG&E to assume all of its PPAs with the Company. There are many conditions that must be satisfied before the PG&E Plan and assumption of the PPAs can become effective, including but not limited to approvals by various classes of creditors, the Bankruptcy Court, and the CPUC. A hearing before the Bankruptcy Court to consider whether the PG&E Plan will be approved and confirmed is currently expected to occur on May 27, 2020. As of March 31, 2020, the Company had $1.37 billion of property, plant and equipment, net, $368 million investments in unconsolidated affiliates and $1.19 billion of borrowings with final maturity dates ranging from 2022 to 2037 related to subsidiaries that sell their output to PG&E under the long-term contracts. These subsidiaries of the Company are parties to financing agreements consisting of non-recourse project-level debt and, in certain cases, non-recourse holding company debt. The PG&E Bankruptcy has triggered defaults under the PPAs with PG&E and such related financing agreements, as further discussed in Item 1 — Note 7, Long-term Debt. As a result, the Company recorded approximately $1.19 billion of principal, net of the related unamortized debt issuance costs, with final maturity dates ranging from 2022 to 2037, as short-term debt. As of May 7, 2020, the Company's contracts with PG&E have operated in the normal course and the Company currently expects these contracts to continue as such. Additionally, the Company has entered into forbearance agreements for certain project-level financing arrangements and continues to seek forbearance agreements for other project-level financing arrangements affected by the PG&E Bankruptcy. The Company continues to assess the potential future impacts of the PG&E Bankruptcy as events occur. For further discussion see Note 7, Long-term Debt.

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

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, and the reported amounts of revenues and expenses during the reporting period. Actual results could be different from these estimates.

Cash and 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 $95 million and $125 million as of March 31, 2020 and December 31, 2019, 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 statements of cash flows.


	March 31,		December 31,
	2020		2019
	(In millions)
Cash and cash equivalents	$	110	$	155
Restricted cash	270		262
Cash, cash equivalents and restricted cash shown in the statement of cash flows	$	380	$	417

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 March 31, 2020, these restricted funds were comprised of $111 million designated to fund operating expenses, approximately $35 million designated for current debt service payments, and $46 million restricted for reserves including debt service, performance obligations and other reserves, as well as capital expenditures. The remaining $78 million is held in distributions reserve accounts, of which $68 million related to subsidiaries affected by the PG&E Bankruptcy as discussed in Note 1, Nature of Business, and may not be distributed during the pendency of the bankruptcy.

Accumulated Depreciation, Accumulated Amortization

The following table presents the accumulated depreciation included in the property, plant and equipment, net, and accumulated amortization included in intangible assets, net, respectively, as of March 31, 2020 and December 31, 2019:


	March 31, 2020		December 31, 2019
	(In millions)
Property, Plant and Equipment Accumulated Depreciation	$	1,970	$	1,880
Intangible Assets Accumulated Amortization	416		394

Dividends to Class A and Class C common stockholders

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

Dividends on the Class A common stock and Class C common stock are subject to available capital, market conditions, and compliance with associated laws, regulations and other contractual obligations. The Company expects that, based on current circumstances, comparable cash dividends will continue to be paid in the foreseeable future. The Company will continue to evaluate its capital allocation approach during the pendency of the PG&E Bankruptcy, including the Company’s ability to receive unrestricted project distributions.

On April 30, 2020, the Company declared quarterly dividends on its Class A common stock and Class C common stock of $0.21 per share payable on June 15, 2020, to stockholders of record as of June 1, 2020.

Noncontrolling Interests

Clearway Energy LLC Distributions to CEG

The following table lists distributions paid to CEG during the period ended March 31, 2020 on Clearway Energy LLC's Class B and D units:


	First Quarter 2020
Distributions per Class B Unit	$	0.21
Distributions per Class D Unit	$	0.21

On April 30, 2020, Clearway Energy LLC declared a distribution on its Class B and Class D units of $0.21 per unit payable on June 15, 2020 to unit holders of record as of June 1, 2020.

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 income statement.

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 which 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.

Power Purchase Agreements

The majority of the Company’s revenues are obtained through PPAs or other 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 leases. Previously ASC 840, and currently 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. Management's judgment is required 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.

Renewable Energy Credits

Renewable energy credits, or RECs, are usually sold through long-term PPAs. 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 along with the reportable segment for each category for the three months ended March 31, 2020 and 2019 respectively:


	Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue^(a)	$	2	$	125	$	28	$	155
Capacity revenue^(a)	107		—		14		121
Contract amortization	(6)		(15)		(1)		(22)
Other revenue	—		2		7		9
Mark-to-market for economic hedges	—		(5)		—		(5)
Total operating revenue	103		107		48		258
Less: Lease revenue	(109)		(115)		(1)		(225)
Less: Contract amortization	6		15		1		22
Total revenue from contracts with customers	$	—	$	7	$	48	$	55

^(a)The following amounts of energy and capacity revenue relate to leases and are accounted for under ASC 842:


(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue	$	2	$	115	$	1	$	118
Capacity revenue	107		—		—		107
Total	$	109	$	115	$	1	$	225


	Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue^(a)	$	1	$	108	$	32	$	141
Capacity revenue^(a)	79		—		13		92
Contract amortization	(1)		(15)		(1)		(17)
Other revenue	—		2		6		8
Mark-to-market for economic hedges	—		(7)		—		(7)
Total operating revenue	79		88		50		217
Less: Lease revenue	(80)		(99)		—		(179)
Less: Contract amortization	1		15		1		17
Total revenue from contracts with customers	$	—	$	4	$	51	$	55

^(a)The following amounts of energy and capacity revenue relate to leases and are accounted for under ASC 842:


(In millions)	Conventional Generation		Renewables		Total
Energy revenue	$	1	$	99	$	100
Capacity revenue	79		—		79
Total	$	80	$	99	$	179

Contract Amortization

Assets and liabilities recognized from power sales agreements assumed through acquisitions related to the sale of electric capacity and energy in future periods for which the fair value has been determined to be significantly less (more) than market 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 contract assets and liabilities included on the Company’s balance sheet as of March 31, 2020:


(In millions)
Accounts receivable, net - Contracts with customers	$	29
Accounts receivable, net - Leases	70
Total accounts receivable, net ^(a)	$	99

^(a)Total accounts receivable, net, excludes $5 million generated at projects affected by PG&E Bankruptcy, which were recorded in non-current assets as of March 31, 2020.

Recently Issued Accounting Standards Not Yet Adopted

In March 2020, the FASB issued ASU 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 is met. These amendments apply only to contracts that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. The Company intends to apply the amendments to all its eligible contract modifications where applicable.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740, Income Taxes. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. The guidance is effective January 1, 2021, with early adoption permitted. The Company does not expect the effect of the new guidance to be material on its consolidated financial statements.

Reclassification

Certain prior year amounts have been reclassified for comparative purposes.

Acquisitions and Dispositions	3 Months Ended
Acquisitions and Dispositions	Mar. 31, 2020
Business Combinations [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions2020 Dispositions Sale of Energy Center Dover LLC and Energy Center Smyrna LLC Assets — On March 3, 2020, the Company, through Thermal LLC, sold 100% of its interests in Energy Center Dover LLC and Energy Center Smyrna LLC to DB Energy Assets, LLC.

Investments Accounted for by the Equity Method and Variable Interest Entities

3 Months Ended

Mar. 31, 2020

Equity Method Investments and Joint Ventures [Abstract]

Investments Accounted for by the Equity Method and Variable Interest Entities

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, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities, to the consolidated financial statements included in the Company's 2019 Form 10-K.

Summarized financial information for the Company's consolidated VIEs consisted of the following as of March 31, 2020:


(In millions)	Oahu Solar Partnership		Kawailoa Partnership		Repowering Partnership II LLC		Alta TE Holdco		Spring Canyon		Buckthorn Renewables LLC		Other ^(a)
Other current and non-current assets	$	27	$	23	$	45	$	57	$	3	$	1	$	5
Property, plant and equipment	185		145		358		376		85		213		8
Intangible assets	—		—		1		234		—		—		—
Total assets	212		168		404		667		88		214		13
Current and non-current liabilities	129		117		54		44		5		8		3
Total liabilities	129		117		54		44		5		8		3
Noncontrolling interest	35		43		206		48		32		68		—
Net assets less noncontrolling interests	$	48	$	8	$	144	$	575	$	51	$	138	$	10

^(a) Other is comprised of Crosswinds and Hardin projects.

The discussion below describes material changes to VIEs during the three months ended March 31, 2020.

Repowering Partnership II LLC — On February 7, 2020, a third party tax equity investor purchased 100% of the Class A membership interests in Wildorado Repowering Tax Equity Holdco LLC, or Wildorado TE Holdco, for $148 million. The Company's contribution to Wildorado TE Holdco was $112 million as of March 31, 2020. The combined proceeds were used to pay down construction debt under the Repowering Partnership Holdco credit agreement, as described in Note 7, 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. The Company utilizes the HLBV method to determine the net income or loss allocated to tax equity noncontrolling interest. The Company recorded $28 million of loss attributable to Wildorado Investor's noncontrolling interest during the period ended March 31, 2020. Repowering Partnership II LLC also consolidates Elbow Creek TE Holdco and recorded $2 million of loss attributable to Elbow Creek TE Holdco for the three months ended March 31, 2020. 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).

Entities that are not Consolidated

The Company has interests in entities that are considered VIEs under ASC 810, but for which it is not considered the primary beneficiary. The Company accounts for its interests in these entities under the equity method of accounting, as further described in Note 5, Investments Accounted for by the Equity Method and Variable Interest Entities, to the consolidated financial statements included in the Company's 2019 Form 10-K.

The Company's maximum exposure to loss as of March 31, 2020, is limited to its equity investment in the unconsolidated entities, as further summarized in the table below:


Name	Economic Interest	Investment Balance
		(In millions)
Utah Solar Portfolio ^(a)	50%	$	280
Desert Sunlight ^(b)	25%	272
DGPV Holdco 3 LLC ^(c)	99%	152
Agua Caliente Solar ^(b)	16%	96
GenConn	50%	92
DGPV Holdco 1 LLC ^(c)	95%	80
DGPV Holdco 2 LLC ^(c)	95%	66
San Juan Mesa	75%	47
Elkhorn Ridge	66.7%	45
RPV Holdco 1 LLC^(c)	95%	27
Avenal ^(b)	50%	(8)
		$	1,149

^(a) Economic interest based on cash to be distributed. Four Brothers Solar, LLC, Granite Mountain Holdings, LLC and Iron Springs Holdings, LLC are tax equity structures and VIEs.

^(b) Entities that have PPAs with PG&E. For further update on PG&E Bankruptcy see Note 1— Nature of Business.

^(c) Economic interest based on cash to be distributed. DGPV Holdco 1 LLC, DGPV Holdco 2 LLC, DGPV Holdco 3 LLC and RPV Holdco 1 LLC are tax equity structures and VIEs.

DGPV Holdco 3 LLC — The Company invested $7 million of cash during the three months ended March 31, 2020 in DGPV Holdco 3 LLC. The Company owns approximately 112 MW of distributed solar capacity, based on cash to be distributed, with a weighted average remaining contract life of approximately 21 years as of March 31, 2020.

The following tables present summarized financial information for the Company's significant equity method investments:


	Three months ended March 31,
	2020		2019
Income Statement Data:	(In millions)
DGPV Holdco 3
Operating revenue	$	7	$	4
Operating income	2		1
Net income (loss)	(16)		1
RPV Holdco
Operating revenue	4		4
Operating income	—		1
Net income (loss)	$	3	$	(1)

	As of March 31,		As of December 31,
	2020		2019
Balance Sheet Data:	(In millions)
DGPV Holdco 3
Current assets	$	78	$	39
Non-current assets	367		371
Current liabilities	49		61
Non-current liabilities	231		216
Redeemable noncontrolling interest	(1)		(1)
RPV Holdco
Current assets	2		2
Non-current assets	160		162
Current liabilities	1		1
Non-current liabilities	8		8
Redeemable noncontrolling interest	$	27	$	31

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

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, accounts payable, accounts payable — affiliates, accrued expenses and other liabilities, the carrying amounts approximate fair value because of the short-term maturity of those instruments and are classified as Level 1 within the fair value hierarchy.

The estimated carrying amounts and fair values of the Company’s recorded financial instruments not carried at fair market value are as follows:


	As of March 31, 2020						As of December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
(In millions)



Liabilities:
Long-term debt, including current portion^(a)	$	6,634	$	6,598	$	6,858	$	6,957

^(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 non-publicly traded long-term debt 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 March 31, 2020 and December 31, 2019:


	As of March 31, 2020						As of December 31, 2019
	Level 2		Level 3		Level 2		Level 3
	(In millions)
Long-term debt, including current portion	$	1,521	$	5,077	$	1,736	$	5,221

Recurring Fair Value Measurements

The Company records its derivative assets and liabilities at fair value on its consolidated balance sheet. 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 March 31, 2020						As of December 31, 2019
	Fair Value ^(a)						Fair Value ^(a)
(In millions)	Level 2		Level 3		Level 2		Level 3




Derivative liabilities:
Commodity contracts	$	1	$	14	$	—	$	9
Interest rate contracts	174		—		83		—
Total liabilities	$	175	$	14	$	83	$	9

^(a) There were no derivative assets classified as Level 1, Level 2 or Level 3 and no liabilities classified as Level 1 as of March 31, 2020 and as of December 31, 2019.

The following table reconciles the beginning and ending balances for instruments that are recognized at fair value in the condensed consolidated financial statements using significant unobservable inputs:


	Three months ended March 31,
	2020		2019
(In millions)	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
Beginning balance as of January 1, 2020	$	(9)	$	—
Total losses for the period included in earnings	(5)		—
Purchases	—		(7)
Ending balance as of March 31, 2020	$	(14)	$	(7)
Change in unrealized losses included in earnings for derivatives held as of March 31, 2020	$	(5)	$	—

Derivative Fair Value Measurements

The Company's contracts are non-exchange-traded and valued using prices provided by external sources. For some of the Company’s energy contracts, management receives quotes from multiple sources. To the extent that multiple quotes are received, the prices reflect the average of the bid-ask mid-point prices obtained from all sources believed to provide the most liquid market for the commodity. The remainder of the assets and liabilities represent contracts for which external sources or observable market quotes are not available. These contracts are valued based on various valuation techniques including, but not limited to, internal models based on a fundamental analysis of the market and extrapolation of the observable market data with similar characteristics. As of March 31, 2020, contracts valued with prices provided by models and other valuation techniques make up 7% of derivative liabilities.

The Company’s significant position classified as Level 3 includes physical power 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 and 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 tables quantify the significant unobservable inputs used in developing the fair value of the Company's Level 3 positions as of March 31, 2020:

March 31, 2020

Fair Value

Input/Range

Assets

Liabilities

Valuation Technique

Significant Unobservable Input

Low

High

Weighted Average

(In millions)

Power Contracts

—

(14)

Discounted Cash Flow

Forward Market Price (per MWh)

7.93

40.68

15.16

The following table provides sensitivity of fair value measurements to increases/(decreases) in significant unobservable inputs as of March 31, 2020:


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)

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 March 31, 2020, the non-performance reserve was a $19 million gain recorded primarily in interest expense in the consolidated statements 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 in Note 2, Summary of Significant Accounting Policies, to the consolidated financial statements included in the Company's 2019 Form 10-K, the following 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; (iii) the use of credit mitigation measures such as margin, collateral, prepayment arrangements, or volumetric limits; (iv) the use of payment netting agreements; and (v) the use of master netting agreements that allow for the netting of positive and negative exposures of various contracts associated with a single counterparty. Risks surrounding counterparty performance and credit could ultimately impact the amount and timing of expected cash flows. The Company seeks to mitigate counterparty risk by having a diversified portfolio of counterparties.

Counterparty credit exposure includes credit risk exposure under certain long-term agreements, including solar and other PPAs. As external sources or observable market quotes are not available to estimate such exposure, the Company estimates the exposure related to these contracts based on various techniques including, but not limited to, internal models based on a fundamental analysis of the market and extrapolation of observable market data with similar characteristics. The majority of these power contracts are with utilities with strong credit quality and public utility commission or other regulatory support. However, such regulated utility counterparties can be impacted by changes in government regulations or adverse financial conditions, which the Company is unable to predict.

On January 29, 2019, PG&E filed for reorganization under Chapter 11 of the U.S. Bankruptcy Code. Certain subsidiaries of the Company sell the output of their facilities to PG&E under long-term PPAs, including interests in 6 solar facilities totaling 480 MW and Marsh Landing with a capacity of 720 MW. The Company consolidates three of the solar facilities and Marsh Landing and records its interest in the other solar facilities as equity method investments. The Company had $13 million in accounts receivable due from PG&E for its consolidated projects, of which $5 million was recorded to non-current assets as of March 31, 2020. As of May 7, 2020, the Company's contracts with PG&E have operated in the normal course and the Company currently expects these contracts to continue as such. The Company has entered into forbearance agreements for certain project-level financing arrangements as of May 7, 2020, and continues seeking similar forbearance agreements with lenders for the remaining project-level financing arrangements affected by the PG&E Bankruptcy. For further discussion see Note 7, Long-term Debt.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

This footnote should be read in conjunction with the complete description under Note 7, Accounting for Derivative Instruments and Hedging Activities, to the consolidated financial statements included in the Company's 2019 Form 10-K.

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 March 31, 2020, the Company had interest rate derivative instruments on non-recourse debt extending through 2041, 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 March 31, 2020, the Company had energy-related derivative instruments extending through 2029. At March 31, 2020, 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 of the Company's open derivative transactions broken out by type:


		Total Volume
		March 31, 2020		December 31, 2019
Commodity	Units	(In millions)
Natural Gas	MMBtu	1		2
Power	MWh	(2)		(2)
Interest	Dollars	$	1,816	$	1,788

Fair Value of Derivative Instruments

The following table summarizes the fair value within the derivative instrument valuation on the balance sheet:


	Fair Value
		Derivative Liabilities
		March 31, 2020		December 31, 2019
	(In millions)
Derivatives Designated as Cash Flow Hedges:
Interest rate contracts current		$	6	$	3
Interest rate contracts long-term		22		11
Total Derivatives Designated as Cash Flow Hedges		28		14
Derivatives Not Designated as Cash Flow Hedges:
Interest rate contracts current		31		13
Interest rate contracts long-term		115		56
Commodity contracts current		1		—
Commodity contracts long-term		14		9
Total Derivatives Not Designated as Cash Flow Hedges		161		78
Total Derivatives		$	189	$	92

The Company has elected to present derivative assets and liabilities on the balance sheet on a trade-by-trade basis and does not offset amounts at the counterparty master agreement level. As of March 31, 2020 and December 31, 2019, there was no outstanding collateral paid or received. The following tables summarize the offsetting of derivatives by the counterparty master agreement level as of March 31, 2020 and December 31, 2019:


As of March 31, 2020	Gross Amounts of Recognized Assets/Liabilities		Derivative Instruments		Net Amount
Commodity contracts:	(In millions)

Derivative liabilities	$	(15)	$	—	$	(15)
Total commodity contracts	(15)		—		(15)
Interest rate contracts:

Derivative liabilities	(174)		—		(174)
Total interest rate contracts	(174)		—		(174)
Total derivative instruments	$	(189)	$	—	$	(189)


As of December 31, 2019	Gross Amounts of Recognized Assets/Liabilities		Derivative Instruments		Net Amount
Commodity contracts:	(In millions)

Derivative liabilities	$	(9)	$	(1)	$	(10)
Total commodity contracts	(9)		(1)		(10)
Interest rate contracts:

Derivative liabilities	(83)		1		(82)
Total interest rate contracts	(83)		1		(82)
Total derivative instruments	$	(92)	$	—	$	(92)

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, net of tax:


		Three Months Ended March 31
		2020		2019
	(In millions)
Accumulated OCL beginning balance		$	(31)	$	(38)
Reclassified from accumulated OCL to income due to realization of previously deferred amounts		2		3
Mark-to-market of cash flow hedge accounting contracts		(14)		(5)
Accumulated OCL ending balance, net of income tax benefit of $8 and $7, respectively		(43)		(40)
Accumulated OCL attributable to noncontrolling interests		(22)		(21)
Accumulated OCL attributable to Clearway Energy, Inc.		$	(21)	$	(19)
Losses expected to be realized from OCL during the next 12 months, net of income tax benefit of $3		$	(9)	$	(8)

Impact of Derivative Instruments on the Statements of Operations

Gains and losses related to the Company's derivatives are recorded in the consolidated statements of operations as follows:


		Three Months Ended March 31
		2020		2019
	(In millions)
Interest Rate Contracts (Interest Expense)		$	(79)	$	(18)
Mark-to-market economic hedging activities ^(a)		(5)		(7)

^(a) Relates to long-term power hedge at Elbow Creek Wind Project LLC, or Elbow Creek.

A portion of the Company’s derivative commodity contracts relates to its Thermal Business for the purchase of fuel commodities based on the forecasted usage of the thermal district energy centers. Realized gains and losses on these contracts are reflected in the fuel costs that are permitted to be billed to customers through the related customer contracts or tariffs and, accordingly, no gains or losses are reflected in the consolidated statements of operations for these contracts.

See Note 5, Fair Value of Financial Instruments, for a discussion regarding concentration of credit risk.

Long-term Debt

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Long-term Debt

This footnote should be read in conjunction with the complete description under Note 10, Long-term Debt, to the consolidated financial statements included in the Company's 2019 Form 10-K. Long-term debt consisted of the following:


	March 31, 2020		December 31, 2019		March 31, 2020, interest rate % ^(a)	Letters of Credit Outstanding at March 31, 2020
	(In millions, except rates)
2020 Convertible Notes	$	45	$	45	3.250
2024 Senior Notes ^(b)	—		88		5.375
2025 Senior Notes	600		600		5.750
2026 Senior Notes	350		350		5.000
2028 Senior Notes	600		600		4.750
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 ^(c)	180		—		L+1.75	62
Project-level debt:
Alpine, due 2022^(d)	119		119		L+2.00	16
Alta Wind I-V lease financing arrangements, due 2034 and 2035	844		844		5.696 - 7.015	45
Buckthorn Solar, due 2025	129		129		L+1.750	26
Carlsbad Holdco, due 2038	216		216		4.210	5
Carlsbad Energy Holdings LLC, due 2027 and 2038	582		582		various	80
CVSR, due 2037 ^(d)	684		696		2.339 - 3.775	—
CVSR Holdco Notes, due 2037 ^(d)	176		182		4.680	13
Duquesne, due 2059	95		95		4.620
El Segundo Energy Center, due 2023	269		303		L+1.75 - L+2.375	138
Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037	327		328		various	—
Laredo Ridge, due 2028	82		84		L+2.125	10
Kansas South, due 2030 ^(d)	24		24		L+2.25	2
Kawailoa Solar Holdings LLC, due 2026	82		82		L+1.375	13
Marsh Landing, due 2023 ^(d)	196		206		L+2.125	27
Oahu Solar Holdings LLC, due 2026	91		91		L+1.375	17
Repowering Partnership Holdco LLC, due 2020 ^(e)	—		228		L+.85	—
South Trent, due 2028	42		43		L+1.350	12
Tapestry, due 2031	152		156		L+1.375	18
Utah Solar Portfolio, due 2022	254		254		L+2.625	13
Viento, due 2023	39		42		L+2.00	14
Walnut Creek, due 2023	166		175		L+1.75	83
Other	290		296		various	23
Subtotal project-level debt:	4,859		5,175
Total debt	6,634		6,858
Less current maturities	(1,480)		(1,824)
Less net debt issuance costs	(73)		(78)
Total long-term debt	$	5,081	$	4,956

^(a) As of March 31, 2020, L+ equals 3 month LIBOR plus x%, except for Viento, due 2023 and Kansas South, due 2030 where L+ equals 6 month LIBOR plus x% and Utah Solar Portfolio, where L+ equals 1 month LIBOR plus 2.625%.

^(b)Repaid in January 2020, as further described below.

^(c) Applicable rate is determined by the borrower leverage ratio, as defined in the credit agreement.

^(d) Entities affected by PG&E bankruptcy, see further discussion below.

^(e)Repaid in February 2020, as further described below.

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 March 31, 2020, the Company was in compliance with all of the required covenants, other than any covenants impacted by the PG&E Bankruptcy, as discussed below. The discussion below describes material changes to or additions of long-term debt for the three months ended March 31, 2020.

Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility

As of March 31, 2020, The Company had $180 million outstanding under the revolving credit facility and $62 million in letters of credit outstanding.

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.

Project - level Debt

PG&E Bankruptcy

The Company continues classifying all PG&E affected borrowings as current as of March 31, 2020. In addition, distributions from these projects to Clearway Operating LLC are prohibited under the related debt agreements. As of May 7, 2020, the Company has entered into forbearance agreements for certain project-level financing arrangements, and continues to seek forbearance agreements for its other project-level financing arrangements affected by the PG&E Bankruptcy.

Repowering Partnership Holdco LLC, due 2020

In February 2020, the Company repaid $260 million of construction debt outstanding under the construction loan facility. The repayment was effectuated with the proceeds from the tax equity contributions for Wildorado TE Holdco, as further descried in Note 4, Investments Accounted for by the Equity Method and Variable Interest Entities, as well as with the contributions by the Company.

Earnings Per Share

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Basic earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding. Shares issued during the year are weighted for the portion of the year that they were outstanding. Diluted earnings per share is computed in a manner consistent with that of basic earnings per share while giving effect to all potentially dilutive common shares that were outstanding during the period.

The reconciliation of Clearway Energy, Inc.'s basic and diluted earnings per share is shown in the following tables:


	Three months ended March 31,
	2020								2019
(In millions, except per share data) ^(a)	Common Class A		Common Class C		Common Class A		Common Class C
Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders
Net loss attributable to Clearway Energy, Inc.	$	(9)	$	(20)	$	(6)	$	(14)
Weighted average number of common shares outstanding — basic and diluted	35		79		35		73
Loss per weighted average common share — basic and diluted	$	(0.26)	$	(0.26)	$	(0.18)	$	(0.18)

^(a)Basic and diluted (loss) earnings per share might not recalculate due to presenting values in millions rather than whole dollars.

The following table summarizes the Company's outstanding equity instruments that are anti-dilutive and were not included in the computation of the Company's diluted earnings per share:


	Three months ended March 31,
	2020	2019
	(In millions of shares)
2020 Convertible Notes - Common Class C	2	2

Changes in Capital Structure

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Changes in Capital Structure

At-the-Market Equity Offering Program, or the ATM Program

Clearway Energy, Inc. is party to an equity distribution agreement with Barclays Capital Inc., Credit Suisse Securities (USA) LLC, J.P. Morgan Securities LLC and RBC Capital Markets, LLC, as sales agents. Pursuant to the terms of the equity distribution agreement, Clearway Energy, Inc. may offer and sell shares of its Class C common stock par value $0.01 per share, from time to time through the sales agents up to an aggregate sales price of $150 million through an at-the-market equity offering program, or the ATM Program. Clearway Energy, Inc. may also sell shares of its Class C common stock to any of the sales agents, as principals for its own account, at a price agreed upon at the time of sale.

During the quarter ended March 31, 2020, Clearway Energy, Inc. issued and sold 478,384 shares of Class C common stock for net proceeds of $10,245,070. The Company utilized the proceeds of the sales to acquire 478,384 Class C units of Clearway Energy LLC and, as a result, the Company currently owns 57.13% of the economic interests of Clearway Energy LLC, with CEG retaining 42.87% of the economic interests of Clearway Energy LLC.

As of March 31, 2020, approximately $26 million of Class C common stock remains available for issuance under the ATM Program.

Dividends to Class A and Class C common stockholders

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

The Company also has authorized 10 million shares of preferred stock, par value $0.01 per share. None of the shares of preferred stock have been issued.

Segment Reporting

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

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 and chilled water business. The Corporate segment reflects the Company's corporate costs. The Company's chief operating decision maker, its Chief Executive Officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, and CAFD, as well as economic gross margin and net income (loss).


	Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Corporate		Total
Operating revenues	$	103	$	107	$	48	$	—	$	258
Cost of operations	24		36		33		—		93
Depreciation, amortization and accretion	33		62		7		—		102

General and administrative	—		—		1		8		9
Acquisition-related transaction and integration costs	—		—		—		1		1
Development costs	—		—		1		—		1
Operating income (loss)	46		9		6		(9)		52
Equity in earnings of unconsolidated affiliates	2		(15)		—		—		(13)
Other income, net	—		1		1		—		2
Loss on debt extinguishment	—		—		—		(3)		(3)
Interest expense	(30)		(109)		(5)		(23)		(167)
Income (loss) before income taxes	18		(114)		2		(35)		(129)
Income tax benefit	—		—		—		(22)		(22)
Net Income (Loss)	$	18	$	(114)	$	2	$	(13)	$	(107)
Total Assets	$	2,677	$	6,116	$	625	$	137	$	9,555


	Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Thermal		Corporate		Total
Operating revenues	$	79	$	88	$	50	$	—	$	217
Cost of operations	17		33		33		—		83
Depreciation, amortization and accretion	25		54		6		—		85

General and administrative	—		—		1		5		6
Acquisition-related transaction and integration costs	—		—		—		1		1
Development costs	—		—		1		—		1
Operating income (loss)	37		1		9		(6)		41
Equity in earnings of unconsolidated affiliates	2		1		—		—		3
Other income, net	1		1		—		1		3

Interest expense	(16)		(59)		(4)		(22)		(101)
Income (loss) before income taxes	24		(56)		5		(27)		(54)
Income tax benefit	—		—		—		(7)		(7)
Net Income (Loss)	$	24	$	(56)	$	5	$	(20)	$	(47)

Income Taxes

3 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

Effective Tax Rate

The income tax provision consisted of the following:


	Three months ended March 31,
(In millions, except percentages)	2020			2019
Loss before income tax benefit	$	(129)		$	(54)
Income tax benefit	(22)			(7)
Effective income tax rate	17.1		%	13.0		%

For the three months ended March 31, 2020 the overall effective tax rate was different than the statutory rate of 21% primarily due to taxable earnings and losses allocated to partners' interest in Clearway Energy LLC, which includes the effects of applying HLBV method of accounting for book purposes for certain partnerships.

For the three months ended March 31, 2019, the overall effective tax rate was different than the statutory rate of 21% primarily due to production and investment tax credits generated from certain wind and solar assets, as well as taxable earnings and losses allocated to partners' interest in Clearway Energy LLC, which includes the effects of applying HLBV method of accounting for book purposes for certain partnerships.

For tax purposes, Clearway Energy LLC is treated as a partnership; therefore, the Company and CEG each record their respective share of taxable income or loss.

On March 27, 2020 the Coronavirus Aid, Relief, and Economic Security (CARES) Act, or the Act, was signed into law, which includes modifications to the business interest expense disallowance and net operating loss provisions. While the Company expects to utilize previously disallowed interest expense during 2020 as a result of the modifications, the Company does not expect the Act to have a material impact on the consolidated financial statements. The Company will continue to assess the effects of the Act and ongoing government guidance related to COVID-19 that may be issued.

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2020
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's project entities. Amounts due to CEG subsidiaries are recorded as accounts payable - affiliate and amounts due to the Company from CEG subsidiaries are recorded as accounts receivable - affiliate in the Company's 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 revenues and 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, to these subsidiaries. The Company incurred total expenses for these services of $9 million and $7 million for the three months ended March 31, 2020 and March 31, 2019, respectively. There was a balance of $9 million and $7 million due to RENOM as of March 31, 2020 and December 31, 2019, respectively. Administrative Services Agreements by and between the Company and CEG Various wholly-owned subsidiaries of the Company are parties to administrative services agreements with Clearway Asset Services and Clearway Solar Asset Management, two wholly-owned subsidiaries of CEG, which provide various administrative services to the Company's subsidiaries. The Company incurred expenses under these agreements of $2 million for each of the periods ended March 31, 2020 and March 31, 2019. 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. Amounts due to CEG or its subsidiaries related to these MSAs are recorded as accounts payable - affiliate and amounts due to the Company from CEG and subsidiaries are recorded as accounts receivable - affiliate on the Company's consolidated balance sheet. The Company incurred expenses of $0.6 million under these agreements during the period ended March 31, 2020.

Contingencies	3 Months Ended
Contingencies	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies This note should be read in conjunction with the complete description under Note 17, Commitments and Contingencies, to the Company's 2019 Form 10-K. 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 is subject to a right to appeal and the case in the Knox County District Court remains pending, but has been stayed pending the outcome of the U.S. District Court case. The Company believes the allegations of NPPD are meritless and the Company is vigorously defending its rights under the PPAs. 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

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Leases

Accounting for Leases

The Company evaluates each arrangement at inception to determine if it contains a lease. All of the Company’s leases are operating leases as of March 31, 2020.

Lessee

The Company records its operating lease liabilities at the present value at lease commencement date of the lease payments over the lease term. 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 to 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 was comprised of the following:


(In millions)
	Three months ended March 31, 2020		Three months ended March 31, 2019
Operating lease cost - Fixed	$	4	$	2

Operating lease cost - Variable	2		4
Total lease cost	$	6	$	6

Operating lease information was as follows:


(In millions, except term and rate)	March 31, 2020		December 31, 2019

ROU Assets - operating leases, net	$	221	$	223

Short-term lease liability - operating leases^(a)	7		7
Long-term lease liability - operating leases	222		227
Total lease liability	$	229	$	234

Weighted average remaining lease term	24		25
Weighted average discount rate	4.4%		4.4%

	Three months ended March 31, 2020		Three months ended March 31, 2019
Cash paid for operating leases	$	7	$	4

^(a) Short-term lease liability balances are included within the accrued expenses and other current liabilities line item of the consolidated balance sheets as of March 31, 2020 and December 31, 2019.

Maturities of operating lease liabilities as of March 31, 2020 are as follows:


(In millions)
Remainder of 2020	$	10
2021	16
2022	16
2023	15
2024	16
Thereafter	300
Total lease payments	373
Less imputed interest	(144)
Total lease liability - operating leases	$	229

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 — MD&A, Introduction, Environmental, Regulatory of this Form 10-Q. 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 of the Company’s leases are operating leases. 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. As disclosed in Note 2, Summary of Significant Accounting Policies, the following amounts of energy and capacity revenue are related to the Company’s leases:


Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue	$	2	$	115	$	1	$	118
Capacity revenue	107		—		—		107
Operating revenue	$	109	$	115	$	1	$	225


Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Total
Energy revenue	$	1	$	99	$	100
Capacity revenue	79		—		79
Operating revenue	$	80	$	99	$	179

Minimum future rent payments under the operating leases for the remaining periods as of March 31, 2020


(In millions)
Remainder of 2020	$	358
2021	444
2022	450
2023	259
2024	106
Thereafter	1,605
Total lease payments	$	3,222

Property, plant and equipment, net related to the Company’s operating leases were as follows:


(In millions)	March 31, 2020		December 31, 2019
Property, plant and equipment	$	7,020	$	6,942
Accumulated depreciation	(1,732)		(1,649)
Net property, plant and equipment	$	5,288	$	5,293

Leases

Accounting for Leases

The Company evaluates each arrangement at inception to determine if it contains a lease. All of the Company’s leases are operating leases as of March 31, 2020.

Lessee

Lease expense was comprised of the following:


(In millions)
	Three months ended March 31, 2020		Three months ended March 31, 2019
Operating lease cost - Fixed	$	4	$	2

Operating lease cost - Variable	2		4
Total lease cost	$	6	$	6

Operating lease information was as follows:


(In millions, except term and rate)	March 31, 2020		December 31, 2019

ROU Assets - operating leases, net	$	221	$	223

Short-term lease liability - operating leases^(a)	7		7
Long-term lease liability - operating leases	222		227
Total lease liability	$	229	$	234

Weighted average remaining lease term	24		25
Weighted average discount rate	4.4%		4.4%

	Three months ended March 31, 2020		Three months ended March 31, 2019
Cash paid for operating leases	$	7	$	4

Maturities of operating lease liabilities as of March 31, 2020 are as follows:


(In millions)
Remainder of 2020	$	10
2021	16
2022	16
2023	15
2024	16
Thereafter	300
Total lease payments	373
Less imputed interest	(144)
Total lease liability - operating leases	$	229

Lessor


Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue	$	2	$	115	$	1	$	118
Capacity revenue	107		—		—		107
Operating revenue	$	109	$	115	$	1	$	225


Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Total
Energy revenue	$	1	$	99	$	100
Capacity revenue	79		—		79
Operating revenue	$	80	$	99	$	179

Minimum future rent payments under the operating leases for the remaining periods as of March 31, 2020


(In millions)
Remainder of 2020	$	358
2021	444
2022	450
2023	259
2024	106
Thereafter	1,605
Total lease payments	$	3,222

Property, plant and equipment, net related to the Company’s operating leases were as follows:


(In millions)	March 31, 2020		December 31, 2019
Property, plant and equipment	$	7,020	$	6,942
Accumulated depreciation	(1,732)		(1,649)
Net property, plant and equipment	$	5,288	$	5,293

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2020
Accounting Policies [Abstract]
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, and the reported amounts of revenues and expenses during the reporting period. Actual results could be different from these estimates.
Revenue Recognition	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 income statement. 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 which 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. Power Purchase Agreements The majority of the Company’s revenues are obtained through PPAs or other 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 leases. Previously ASC 840, and currently 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. Management's judgment is required 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. Renewable Energy Credits Renewable energy credits, or RECs, are usually sold through long-term PPAs. 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 related to the sale of electric capacity and energy in future periods for which the fair value has been determined to be significantly less (more) than market 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.
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted In March 2020, the FASB issued ASU 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 is met. These amendments apply only to contracts that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. The Company intends to apply the amendments to all its eligible contract modifications where applicable. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740, Income Taxes. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. The guidance is effective January 1, 2021, with early adoption permitted. The Company does not expect the effect of the new guidance to be material on its consolidated financial statements.
Reclassification	Reclassification Certain prior year amounts have been reclassified for comparative purposes.
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 and chilled water business. The Corporate segment reflects the Company's corporate costs. The Company's chief operating decision maker, its Chief Executive Officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, and CAFD, as well as economic gross margin and net income (loss).

Nature of Business (Tables)	3 Months Ended
Nature of Business (Tables)	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company Structure	The following table represents the structure of the Company as of March 31, 2020:

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents


	March 31,		December 31,
	2020		2019
	(In millions)
Cash and cash equivalents	$	110	$	155
Restricted cash	270		262
Cash, cash equivalents and restricted cash shown in the statement of cash flows	$	380	$	417

Schedule of Accumulated Amortization and Depreciation


	March 31, 2020		December 31, 2019
	(In millions)
Property, Plant and Equipment Accumulated Depreciation	$	1,970	$	1,880
Intangible Assets Accumulated Amortization	416		394

Dividends Declared

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

Distributions Made to Limited Liability Company (LLC) Member, by Distribution

The following table lists distributions paid to CEG during the period ended March 31, 2020 on Clearway Energy LLC's Class B and D units:


	First Quarter 2020
Distributions per Class B Unit	$	0.21
Distributions per Class D Unit	$	0.21

Disaggregation of Revenue


	Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue^(a)	$	2	$	125	$	28	$	155
Capacity revenue^(a)	107		—		14		121
Contract amortization	(6)		(15)		(1)		(22)
Other revenue	—		2		7		9
Mark-to-market for economic hedges	—		(5)		—		(5)
Total operating revenue	103		107		48		258
Less: Lease revenue	(109)		(115)		(1)		(225)
Less: Contract amortization	6		15		1		22
Total revenue from contracts with customers	$	—	$	7	$	48	$	55

^(a)The following amounts of energy and capacity revenue relate to leases and are accounted for under ASC 842:


(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue	$	2	$	115	$	1	$	118
Capacity revenue	107		—		—		107
Total	$	109	$	115	$	1	$	225


	Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue^(a)	$	1	$	108	$	32	$	141
Capacity revenue^(a)	79		—		13		92
Contract amortization	(1)		(15)		(1)		(17)
Other revenue	—		2		6		8
Mark-to-market for economic hedges	—		(7)		—		(7)
Total operating revenue	79		88		50		217
Less: Lease revenue	(80)		(99)		—		(179)
Less: Contract amortization	1		15		1		17
Total revenue from contracts with customers	$	—	$	4	$	51	$	55

^(a)The following amounts of energy and capacity revenue relate to leases and are accounted for under ASC 842:


(In millions)	Conventional Generation		Renewables		Total
Energy revenue	$	1	$	99	$	100
Capacity revenue	79		—		79
Total	$	80	$	99	$	179

Contract with Customer, Asset and Liability

The following table reflects the contract assets and liabilities included on the Company’s balance sheet as of March 31, 2020:


(In millions)
Accounts receivable, net - Contracts with customers	$	29
Accounts receivable, net - Leases	70
Total accounts receivable, net ^(a)	$	99

^(a)Total accounts receivable, net, excludes $5 million generated at projects affected by PG&E Bankruptcy, which were recorded in non-current assets as of March 31, 2020.

Investments Accounted for by the Equity Method and Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2020

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Variable Interest Entities

Summarized financial information for the Company's consolidated VIEs consisted of the following as of March 31, 2020:


(In millions)	Oahu Solar Partnership		Kawailoa Partnership		Repowering Partnership II LLC		Alta TE Holdco		Spring Canyon		Buckthorn Renewables LLC		Other ^(a)
Other current and non-current assets	$	27	$	23	$	45	$	57	$	3	$	1	$	5
Property, plant and equipment	185		145		358		376		85		213		8
Intangible assets	—		—		1		234		—		—		—
Total assets	212		168		404		667		88		214		13
Current and non-current liabilities	129		117		54		44		5		8		3
Total liabilities	129		117		54		44		5		8		3
Noncontrolling interest	35		43		206		48		32		68		—
Net assets less noncontrolling interests	$	48	$	8	$	144	$	575	$	51	$	138	$	10

^(a) Other is comprised of Crosswinds and Hardin projects.

Equity Method Investments

The Company's maximum exposure to loss as of March 31, 2020, is limited to its equity investment in the unconsolidated entities, as further summarized in the table below:


Name	Economic Interest	Investment Balance
		(In millions)
Utah Solar Portfolio ^(a)	50%	$	280
Desert Sunlight ^(b)	25%	272
DGPV Holdco 3 LLC ^(c)	99%	152
Agua Caliente Solar ^(b)	16%	96
GenConn	50%	92
DGPV Holdco 1 LLC ^(c)	95%	80
DGPV Holdco 2 LLC ^(c)	95%	66
San Juan Mesa	75%	47
Elkhorn Ridge	66.7%	45
RPV Holdco 1 LLC^(c)	95%	27
Avenal ^(b)	50%	(8)
		$	1,149

^(a) Economic interest based on cash to be distributed. Four Brothers Solar, LLC, Granite Mountain Holdings, LLC and Iron Springs Holdings, LLC are tax equity structures and VIEs.

^(b) Entities that have PPAs with PG&E. For further update on PG&E Bankruptcy see Note 1— Nature of Business.

^(c) Economic interest based on cash to be distributed. DGPV Holdco 1 LLC, DGPV Holdco 2 LLC, DGPV Holdco 3 LLC and RPV Holdco 1 LLC are tax equity structures and VIEs.

The following tables present summarized financial information for the Company's significant equity method investments:


	Three months ended March 31,
	2020		2019
Income Statement Data:	(In millions)
DGPV Holdco 3
Operating revenue	$	7	$	4
Operating income	2		1
Net income (loss)	(16)		1
RPV Holdco
Operating revenue	4		4
Operating income	—		1
Net income (loss)	$	3	$	(1)

	As of March 31,		As of December 31,
	2020		2019
Balance Sheet Data:	(In millions)
DGPV Holdco 3
Current assets	$	78	$	39
Non-current assets	367		371
Current liabilities	49		61
Non-current liabilities	231		216
Redeemable noncontrolling interest	(1)		(1)
RPV Holdco
Current assets	2		2
Non-current assets	160		162
Current liabilities	1		1
Non-current liabilities	8		8
Redeemable noncontrolling interest	$	27	$	31

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Estimated Carrying Values and Fair Values

The estimated carrying amounts and fair values of the Company’s recorded financial instruments not carried at fair market value are as follows:


	As of March 31, 2020						As of December 31, 2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
(In millions)



Liabilities:
Long-term debt, including current portion^(a)	$	6,634	$	6,598	$	6,858	$	6,957

^(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 Option, Disclosures

The following table presents the level within the fair value hierarchy for long-term debt, including current portion as of March 31, 2020 and December 31, 2019:


	As of March 31, 2020						As of December 31, 2019
	Level 2		Level 3		Level 2		Level 3
	(In millions)
Long-term debt, including current portion	$	1,521	$	5,077	$	1,736	$	5,221

Schedule of Fair Value, Assets and Liabilities


	As of March 31, 2020						As of December 31, 2019
	Fair Value ^(a)						Fair Value ^(a)
(In millions)	Level 2		Level 3		Level 2		Level 3




Derivative liabilities:
Commodity contracts	$	1	$	14	$	—	$	9
Interest rate contracts	174		—		83		—
Total liabilities	$	175	$	14	$	83	$	9

^(a) There were no derivative assets classified as Level 1, Level 2 or Level 3 and no liabilities classified as Level 1 as of March 31, 2020 and as of December 31, 2019.


	Three months ended March 31,
	2020		2019
(In millions)	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
Beginning balance as of January 1, 2020	$	(9)	$	—
Total losses for the period included in earnings	(5)		—
Purchases	—		(7)
Ending balance as of March 31, 2020	$	(14)	$	(7)
Change in unrealized losses included in earnings for derivatives held as of March 31, 2020	$	(5)	$	—

Fair Value Measurement Inputs and Valuation Techniques

The following tables quantify the significant unobservable inputs used in developing the fair value of the Company's Level 3 positions as of March 31, 2020:

March 31, 2020

Fair Value

Input/Range

Assets

Liabilities

Valuation Technique

Significant Unobservable Input

Low

High

Weighted Average

(In millions)

Power Contracts

—

(14)

Discounted Cash Flow

Forward Market Price (per MWh)

7.93

40.68

15.16

The following table provides sensitivity of fair value measurements to increases/(decreases) in significant unobservable inputs as of March 31, 2020:


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)

Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Net notional volume buy/(sell) of NRG Yield's open derivative transactions broken out by commodity

The following table summarizes the net notional volume buy of the Company's open derivative transactions broken out by type:


		Total Volume
		March 31, 2020		December 31, 2019
Commodity	Units	(In millions)
Natural Gas	MMBtu	1		2
Power	MWh	(2)		(2)
Interest	Dollars	$	1,816	$	1,788

Fair value within the derivative instrument valuation on the balance sheets

The following table summarizes the fair value within the derivative instrument valuation on the balance sheet:


	Fair Value
		Derivative Liabilities
		March 31, 2020		December 31, 2019
	(In millions)
Derivatives Designated as Cash Flow Hedges:
Interest rate contracts current		$	6	$	3
Interest rate contracts long-term		22		11
Total Derivatives Designated as Cash Flow Hedges		28		14
Derivatives Not Designated as Cash Flow Hedges:
Interest rate contracts current		31		13
Interest rate contracts long-term		115		56
Commodity contracts current		1		—
Commodity contracts long-term		14		9
Total Derivatives Not Designated as Cash Flow Hedges		161		78
Total Derivatives		$	189	$	92

Offsetting of derivatives by counterparty master agreement level and collateral received or paid

The following tables summarize the offsetting of derivatives by the counterparty master agreement level as of March 31, 2020 and December 31, 2019:


As of March 31, 2020	Gross Amounts of Recognized Assets/Liabilities		Derivative Instruments		Net Amount
Commodity contracts:	(In millions)

Derivative liabilities	$	(15)	$	—	$	(15)
Total commodity contracts	(15)		—		(15)
Interest rate contracts:

Derivative liabilities	(174)		—		(174)
Total interest rate contracts	(174)		—		(174)
Total derivative instruments	$	(189)	$	—	$	(189)


As of December 31, 2019	Gross Amounts of Recognized Assets/Liabilities		Derivative Instruments		Net Amount
Commodity contracts:	(In millions)

Derivative liabilities	$	(9)	$	(1)	$	(10)
Total commodity contracts	(9)		(1)		(10)
Interest rate contracts:

Derivative liabilities	(83)		1		(82)
Total interest rate contracts	(83)		1		(82)
Total derivative instruments	$	(92)	$	—	$	(92)

Effects of NRG Yield's accumulated OCI balance attributable to interest rate swaps designated as cash flow hedge derivatives, net of tax

The following table summarizes the effects on the Company’s accumulated OCL balance attributable to interest rate swaps designated as cash flow hedge derivatives, net of tax:


		Three Months Ended March 31
		2020		2019
	(In millions)
Accumulated OCL beginning balance		$	(31)	$	(38)
Reclassified from accumulated OCL to income due to realization of previously deferred amounts		2		3
Mark-to-market of cash flow hedge accounting contracts		(14)		(5)
Accumulated OCL ending balance, net of income tax benefit of $8 and $7, respectively		(43)		(40)
Accumulated OCL attributable to noncontrolling interests		(22)		(21)
Accumulated OCL attributable to Clearway Energy, Inc.		$	(21)	$	(19)
Losses expected to be realized from OCL during the next 12 months, net of income tax benefit of $3		$	(9)	$	(8)

Derivative gains and losses

Gains and losses related to the Company's derivatives are recorded in the consolidated statements of operations as follows:


		Three Months Ended March 31
		2020		2019
	(In millions)
Interest Rate Contracts (Interest Expense)		$	(79)	$	(18)
Mark-to-market economic hedging activities ^(a)		(5)		(7)

^(a) Relates to long-term power hedge at Elbow Creek Wind Project LLC, or Elbow Creek.

Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt consisted of the following:


	March 31, 2020		December 31, 2019		March 31, 2020, interest rate % ^(a)	Letters of Credit Outstanding at March 31, 2020
	(In millions, except rates)
2020 Convertible Notes	$	45	$	45	3.250
2024 Senior Notes ^(b)	—		88		5.375
2025 Senior Notes	600		600		5.750
2026 Senior Notes	350		350		5.000
2028 Senior Notes	600		600		4.750
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 ^(c)	180		—		L+1.75	62
Project-level debt:
Alpine, due 2022^(d)	119		119		L+2.00	16
Alta Wind I-V lease financing arrangements, due 2034 and 2035	844		844		5.696 - 7.015	45
Buckthorn Solar, due 2025	129		129		L+1.750	26
Carlsbad Holdco, due 2038	216		216		4.210	5
Carlsbad Energy Holdings LLC, due 2027 and 2038	582		582		various	80
CVSR, due 2037 ^(d)	684		696		2.339 - 3.775	—
CVSR Holdco Notes, due 2037 ^(d)	176		182		4.680	13
Duquesne, due 2059	95		95		4.620
El Segundo Energy Center, due 2023	269		303		L+1.75 - L+2.375	138
Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037	327		328		various	—
Laredo Ridge, due 2028	82		84		L+2.125	10
Kansas South, due 2030 ^(d)	24		24		L+2.25	2
Kawailoa Solar Holdings LLC, due 2026	82		82		L+1.375	13
Marsh Landing, due 2023 ^(d)	196		206		L+2.125	27
Oahu Solar Holdings LLC, due 2026	91		91		L+1.375	17
Repowering Partnership Holdco LLC, due 2020 ^(e)	—		228		L+.85	—
South Trent, due 2028	42		43		L+1.350	12
Tapestry, due 2031	152		156		L+1.375	18
Utah Solar Portfolio, due 2022	254		254		L+2.625	13
Viento, due 2023	39		42		L+2.00	14
Walnut Creek, due 2023	166		175		L+1.75	83
Other	290		296		various	23
Subtotal project-level debt:	4,859		5,175
Total debt	6,634		6,858
Less current maturities	(1,480)		(1,824)
Less net debt issuance costs	(73)		(78)
Total long-term debt	$	5,081	$	4,956

^(b)Repaid in January 2020, as further described below.

^(c) Applicable rate is determined by the borrower leverage ratio, as defined in the credit agreement.

^(d) Entities affected by PG&E bankruptcy, see further discussion below.

^(e)Repaid in February 2020, as further described below.

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The reconciliation of Clearway Energy, Inc.'s basic and diluted earnings per share is shown in the following tables:


	Three months ended March 31,
	2020								2019
(In millions, except per share data) ^(a)	Common Class A		Common Class C		Common Class A		Common Class C
Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders
Net loss attributable to Clearway Energy, Inc.	$	(9)	$	(20)	$	(6)	$	(14)
Weighted average number of common shares outstanding — basic and diluted	35		79		35		73
Loss per weighted average common share — basic and diluted	$	(0.26)	$	(0.26)	$	(0.18)	$	(0.18)

(a) Basic and diluted (loss) earnings per share might not recalculate due to presenting values in millions rather than whole dollars.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table summarizes the Company's outstanding equity instruments that are anti-dilutive and were not included in the computation of the Company's diluted earnings per share:


	Three months ended March 31,
	2020	2019
	(In millions of shares)
2020 Convertible Notes - Common Class C	2	2

Changes in Capital Structure Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Dividends Declared

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

The following table lists the dividends paid on the Company's Class A common stock and Class C common stock during the three months ended March 31, 2020:


	First Quarter 2020
Dividends per Class A share	$	0.21
Dividends per Class C share	$	0.21

Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment


	Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Corporate		Total
Operating revenues	$	103	$	107	$	48	$	—	$	258
Cost of operations	24		36		33		—		93
Depreciation, amortization and accretion	33		62		7		—		102

General and administrative	—		—		1		8		9
Acquisition-related transaction and integration costs	—		—		—		1		1
Development costs	—		—		1		—		1
Operating income (loss)	46		9		6		(9)		52
Equity in earnings of unconsolidated affiliates	2		(15)		—		—		(13)
Other income, net	—		1		1		—		2
Loss on debt extinguishment	—		—		—		(3)		(3)
Interest expense	(30)		(109)		(5)		(23)		(167)
Income (loss) before income taxes	18		(114)		2		(35)		(129)
Income tax benefit	—		—		—		(22)		(22)
Net Income (Loss)	$	18	$	(114)	$	2	$	(13)	$	(107)
Total Assets	$	2,677	$	6,116	$	625	$	137	$	9,555


	Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Thermal		Corporate		Total
Operating revenues	$	79	$	88	$	50	$	—	$	217
Cost of operations	17		33		33		—		83
Depreciation, amortization and accretion	25		54		6		—		85

General and administrative	—		—		1		5		6
Acquisition-related transaction and integration costs	—		—		—		1		1
Development costs	—		—		1		—		1
Operating income (loss)	37		1		9		(6)		41
Equity in earnings of unconsolidated affiliates	2		1		—		—		3
Other income, net	1		1		—		1		3

Interest expense	(16)		(59)		(4)		(22)		(101)
Income (loss) before income taxes	24		(56)		5		(27)		(54)
Income tax benefit	—		—		—		(7)		(7)
Net Income (Loss)	$	24	$	(56)	$	5	$	(20)	$	(47)

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Reconciliation of the U.S. federal statutory rate to the Company's effective rate

The income tax provision consisted of the following:


	Three months ended March 31,
(In millions, except percentages)	2020			2019
Loss before income tax benefit	$	(129)		$	(54)
Income tax benefit	(22)			(7)
Effective income tax rate	17.1		%	13.0		%

Leases (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Lease Cost

Lease expense was comprised of the following:


(In millions)
	Three months ended March 31, 2020		Three months ended March 31, 2019
Operating lease cost - Fixed	$	4	$	2

Operating lease cost - Variable	2		4
Total lease cost	$	6	$	6

Operating lease information was as follows:


(In millions, except term and rate)	March 31, 2020		December 31, 2019

ROU Assets - operating leases, net	$	221	$	223

Short-term lease liability - operating leases^(a)	7		7
Long-term lease liability - operating leases	222		227
Total lease liability	$	229	$	234

Weighted average remaining lease term	24		25
Weighted average discount rate	4.4%		4.4%

	Three months ended March 31, 2020		Three months ended March 31, 2019
Cash paid for operating leases	$	7	$	4

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of March 31, 2020 are as follows:


(In millions)
Remainder of 2020	$	10
2021	16
2022	16
2023	15
2024	16
Thereafter	300
Total lease payments	373
Less imputed interest	(144)
Total lease liability - operating leases	$	229

Revenue Related to Leases


Three months ended March 31, 2020
(In millions)	Conventional Generation		Renewables		Thermal		Total
Energy revenue	$	2	$	115	$	1	$	118
Capacity revenue	107		—		—		107
Operating revenue	$	109	$	115	$	1	$	225


Three months ended March 31, 2019
(In millions)	Conventional Generation		Renewables		Total
Energy revenue	$	1	$	99	$	100
Capacity revenue	79		—		79
Operating revenue	$	80	$	99	$	179

Minimum Future Rent Payments under Operating Leases

Minimum future rent payments under the operating leases for the remaining periods as of March 31, 2020


(In millions)
Remainder of 2020	$	358
2021	444
2022	450
2023	259
2024	106
Thereafter	1,605
Total lease payments	$	3,222

Future Minimum Lease Commitments Under Operating Leases

Property, plant and equipment, net related to the Company’s operating leases were as follows:


(In millions)	March 31, 2020		December 31, 2019
Property, plant and equipment	$	7,020	$	6,942
Accumulated depreciation	(1,732)		(1,649)
Net property, plant and equipment	$	5,288	$	5,293

Nature of Business (Details) $ in Millions	3 Months Ended
Nature of Business (Details) $ in Millions	Mar. 31, 2020 USD ($) MW	Dec. 31, 2019 USD ($)
Nature of Business [Line Items]
Weighted average remaining contract duration	13 years
Property, plant and equipment	$ 6,001	$ 6,063
Equity investments in affiliates	1,149	$ 1,183
PG&E
Nature of Business [Line Items]
Long-term debt	$ 1,190
Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind
Nature of Business [Line Items]
Power generation capacity, megawatts \| MW	5,875
Thermal
Nature of Business [Line Items]
Power generation capacity, megawatts \| MW	36
Steam and chilled water capacity, megawatts thermal equivalent \| MW	1,530
Clearway Energy LLC
Nature of Business [Line Items]
Ownership interest (as a percentage)	57.13%
CEG \| Clearway Energy LLC
Nature of Business [Line Items]
Ownership interest (as a percentage)	42.87%
CEG \| Clearway Energy, Inc.
Nature of Business [Line Items]
Ownership interest (as a percentage)	54.95%
Public Shareholders \| Clearway Energy, Inc.
Nature of Business [Line Items]
Ownership interest (as a percentage)	45.05%
PG&E
Nature of Business [Line Items]
Property, plant and equipment	$ 1,370
Equity investments in affiliates	$ 368

Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, held at project subsidiaries	$ 95	$ 125
Cash and cash equivalents	110	155
Restricted cash	270	262
Cash, cash equivalents and restricted cash shown in the statement of cash flows	380	$ 417	$ 298	$ 583
Long Term Debt Current
Cash and Cash Equivalents [Line Items]
Restricted cash	35
Debt Service Obligations
Cash and Cash Equivalents [Line Items]
Restricted cash	46
Cash Distribution
Cash and Cash Equivalents [Line Items]
Restricted cash	78
Subsidiaries Affected By Bankruptcy
Cash and Cash Equivalents [Line Items]
Restricted cash	68
Operating Funds
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 111

Summary of Significant Accounting Policies - Dividends Paid (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Common Class A
Class of Stock [Line Items]
Common stock, dividends, per share, cash paid (in dollars per share)	$ 0.21	$ 0.20
Common Class C
Class of Stock [Line Items]
Common stock, dividends, per share, cash paid (in dollars per share)	$ 0.21	$ 0.20

Summary of Significant Accounting Policies - Disaggregated Revenues (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 258	$ 217
Contract amortization	22	17
Lease income	225	179
Total revenue from contracts with customers	55	55
Conventional Generation
Disaggregation of Revenue [Line Items]
Contract amortization	6	1
Lease income	109	80
Total revenue from contracts with customers	0	0
Renewables
Disaggregation of Revenue [Line Items]
Contract amortization	15	15
Lease income	115	99
Total revenue from contracts with customers	7	4
Thermal
Disaggregation of Revenue [Line Items]
Contract amortization	1	1
Lease income	1	0
Total revenue from contracts with customers	48	51
Energy Revenue
Disaggregation of Revenue [Line Items]
Lease income	118	100
Energy Revenue \| Conventional Generation
Disaggregation of Revenue [Line Items]
Lease income	2	1
Energy Revenue \| Renewables
Disaggregation of Revenue [Line Items]
Lease income	115	99
Energy Revenue \| Thermal
Disaggregation of Revenue [Line Items]
Lease income	1
Capacity Revenue
Disaggregation of Revenue [Line Items]
Lease income	107	79
Capacity Revenue \| Conventional Generation
Disaggregation of Revenue [Line Items]
Lease income	107	79
Capacity Revenue \| Renewables
Disaggregation of Revenue [Line Items]
Lease income	0	0
Capacity Revenue \| Thermal
Disaggregation of Revenue [Line Items]
Lease income	0
Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	258	217
Contract amortization	22	17
Mark-to-market for economic hedges	(5)	(7)
Operating Segments \| Conventional Generation
Disaggregation of Revenue [Line Items]
Total operating revenues	103	79
Contract amortization	6	1
Mark-to-market for economic hedges	0	0
Operating Segments \| Renewables
Disaggregation of Revenue [Line Items]
Total operating revenues	107	88
Contract amortization	15	15
Mark-to-market for economic hedges	(5)	(7)
Operating Segments \| Thermal
Disaggregation of Revenue [Line Items]
Total operating revenues	48	50
Contract amortization	1	1
Mark-to-market for economic hedges	0	0
Operating Segments \| Energy Revenue
Disaggregation of Revenue [Line Items]
Total operating revenues	155	141
Operating Segments \| Energy Revenue \| Conventional Generation
Disaggregation of Revenue [Line Items]
Total operating revenues	2	1
Operating Segments \| Energy Revenue \| Renewables
Disaggregation of Revenue [Line Items]
Total operating revenues	125	108
Operating Segments \| Energy Revenue \| Thermal
Disaggregation of Revenue [Line Items]
Total operating revenues	28	32
Operating Segments \| Capacity Revenue
Disaggregation of Revenue [Line Items]
Total operating revenues	121	92
Operating Segments \| Capacity Revenue \| Conventional Generation
Disaggregation of Revenue [Line Items]
Total operating revenues	107	79
Operating Segments \| Capacity Revenue \| Renewables
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0
Operating Segments \| Capacity Revenue \| Thermal
Disaggregation of Revenue [Line Items]
Total operating revenues	14	13
Operating Segments \| Other revenue
Disaggregation of Revenue [Line Items]
Total operating revenues	9	8
Operating Segments \| Other revenue \| Conventional Generation
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0
Operating Segments \| Other revenue \| Renewables
Disaggregation of Revenue [Line Items]
Total operating revenues	2	2
Operating Segments \| Other revenue \| Thermal
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 7	$ 6

Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended
	Jun. 15, 2020	Jun. 01, 2020	Apr. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment Accumulated Depreciation				$ 1,970	$ 1,880
Intangible Assets Accumulated Amortization				416	$ 394
Accounts receivable, after allowance for credit loss				99
PG&E
Summary of Significant Accounting Policies [Line Items]
Accounts receivable, related parties, noncurrent				$ 5
Common Class B
Summary of Significant Accounting Policies [Line Items]
Distribution made to limited liability company (LLC) member, distributions paid, per unit (in dollars per share)				$ 0.21
Common Class D
Summary of Significant Accounting Policies [Line Items]
Distribution made to limited liability company (LLC) member, distributions paid, per unit (in dollars per share)				$ 0.21
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Dividends payable, date declared			Apr. 30, 2020
Common stock, dividends, per share, declared (in dollars per share)			$ 0.21
Dividends payable, date to be paid	Jun. 15, 2020
Dividends payable, date of record		Jun. 01, 2020
Customer Contracts
Summary of Significant Accounting Policies [Line Items]
Accounts receivable, after allowance for credit loss				$ 29
Lease Agreements
Summary of Significant Accounting Policies [Line Items]
Accounts receivable, after allowance for credit loss				$ 70

Acquisitions and Dispositions (Details)	Mar. 03, 2020
Energy Center Dover
Business Acquisition [Line Items]
Sale of assets percentage ownership interest sold	100.00%

Investments Accounted for by the Equity Method and Variable Interest Entities - Consolidated Entities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	$ 3,000	$ 3,029
Property, plant and equipment	6,001	6,063
Intangible assets	1,406	1,428
Total Assets	9,555	9,700
Total liabilities	7,291	$ 7,437
Oahu Solar Partnership
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	27
Property, plant and equipment	185
Intangible assets	0
Total Assets	212
Total liabilities	129
Noncontrolling interest	35
Net assets less noncontrolling interests	48
Kawailoa Partnership
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	23
Property, plant and equipment	145
Intangible assets	0
Total Assets	168
Total liabilities	117
Noncontrolling interest	43
Net assets less noncontrolling interests	8
Repowering Partnership II LLC
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	45
Property, plant and equipment	358
Intangible assets	1
Total Assets	404
Total liabilities	54
Noncontrolling interest	206
Net assets less noncontrolling interests	144
Alta TE Holdco
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	57
Property, plant and equipment	376
Intangible assets	234
Total Assets	667
Total liabilities	44
Noncontrolling interest	48
Net assets less noncontrolling interests	575
Spring Canyon
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	3
Property, plant and equipment	85
Intangible assets	0
Total Assets	88
Total liabilities	5
Noncontrolling interest	32
Net assets less noncontrolling interests	51
Buckthorn Renewables LLC
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	1
Property, plant and equipment	213
Intangible assets	0
Total Assets	214
Total liabilities	8
Noncontrolling interest	68
Net assets less noncontrolling interests	138
Other
Schedule of Equity Method Investments [Line Items]
Other current and non-current assets	5
Property, plant and equipment	8
Intangible assets	0
Total Assets	13
Total liabilities	3
Noncontrolling interest	0
Net assets less noncontrolling interests	$ 10

Investments Accounted for by the Equity Method and Variable Interest Entities - Repowering Partnership II LLC (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Feb. 07, 2020
Schedule of Equity Method Investments [Line Items]
Allocations of taxable income (as a percentage)				99.00%
Loss attributable to noncontrolling interests		$ (78)	$ (27)
Wildorado TE Holdco
Schedule of Equity Method Investments [Line Items]
Business combination, consideration transferred	$ 112
Allocations of taxable income after (as a percentage)				5.00%
Wildorado TE Holdco \| Repowering Partnership II LLC
Schedule of Equity Method Investments [Line Items]
Loss attributable to noncontrolling interests		(28)
Elbow Creek TE Holdco \| Repowering Partnership II LLC
Schedule of Equity Method Investments [Line Items]
Loss attributable to noncontrolling interests		$ (2)
Wind TE Holdco LLC \| Repowering Partnership II LLC
Schedule of Equity Method Investments [Line Items]
Allocations of taxable income after (as a percentage)	60.14%	60.14%
CWSP Wildorado Elbow Holding LLC \| Repowering Partnership II LLC
Schedule of Equity Method Investments [Line Items]
Allocations of taxable income after (as a percentage)	39.86%	39.86%
Third Party Investor \| Wildorado TE Holdco \| Capital Unit, Class A
Schedule of Equity Method Investments [Line Items]
Business acquisition, percentage of voting interests acquired				100.00%
Acquired membership interests				$ 148

Investments Accounted for by the Equity Method and Variable Interest Entities - Unconsolidated Entities (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) MW	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity investments in affiliates	$ 1,149		$ 1,183
Payments to acquire equity method investments	$ 7	$ 4
Utah Solar Portfolio
Schedule of Equity Method Investments [Line Items]
Economic Interest	50.00%
Equity investments in affiliates	$ 280
Desert Sunlight
Schedule of Equity Method Investments [Line Items]
Economic Interest	25.00%
Equity investments in affiliates	$ 272
DGPV Holdco 3 LLC
Schedule of Equity Method Investments [Line Items]
Economic Interest	99.00%
Equity investments in affiliates	$ 152
Payments to acquire equity method investments	$ 7
Power generation capacity, megawatts \| MW	112
Remaining lease term	21 years
Agua Caliente Borrower
Schedule of Equity Method Investments [Line Items]
Economic Interest	16.00%
Equity investments in affiliates	$ 96
GenConn
Schedule of Equity Method Investments [Line Items]
Economic Interest	50.00%
Equity investments in affiliates	$ 92
DGPV Holdco 1 LLC
Schedule of Equity Method Investments [Line Items]
Economic Interest	95.00%
Equity investments in affiliates	$ 80
DGPV Holdco 2 LLC
Schedule of Equity Method Investments [Line Items]
Economic Interest	95.00%
Equity investments in affiliates	$ 66
San Juan Mesa
Schedule of Equity Method Investments [Line Items]
Economic Interest	75.00%
Equity investments in affiliates	$ 47
Elkhorn Ridge
Schedule of Equity Method Investments [Line Items]
Economic Interest	66.70%
Equity investments in affiliates	$ 45
RPV Holdco 1 LLC
Schedule of Equity Method Investments [Line Items]
Economic Interest	95.00%
Equity investments in affiliates	$ 27
Avenal
Schedule of Equity Method Investments [Line Items]
Economic Interest	50.00%
Equity investments in affiliates	$ (8)

Investments Accounted for by the Equity Method and Variable Interest Entities - Equity Method Investments Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Total operating revenues	$ 258	$ 217
Operating income	52	41
Net loss	(107)	(47)
Current assets	554		$ 608
Current liabilities	1,714		2,057
Non-current liabilities	5,577		$ 5,380
DGPV Holdco 3 LLC
Schedule of Equity Method Investments [Line Items]
Total operating revenues	7	4
Operating income	2	1
Net loss	(16)	1
Current assets	78	39
Non-current assets	367	371
Current liabilities	49	61
Non-current liabilities	231	216
Redeemable noncontrolling interest	(1)	(1)
RPV Holdco 1 LLC
Schedule of Equity Method Investments [Line Items]
Total operating revenues	4	4
Operating income	0	1
Net loss	3	(1)
Current assets	2	2
Non-current assets	160	162
Current liabilities	1	1
Non-current liabilities	8	8
Redeemable noncontrolling interest	$ 27	$ 31

Fair Value of Financial Instruments - Balance Sheet Grouping (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and lease obligation, including current maturities	$ 6,634	$ 6,858
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and lease obligation, including current maturities	6,598	6,957
Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and lease obligation, including current maturities	1,521	1,736
Level 3 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and lease obligation, including current maturities	$ 5,077	$ 5,221

Fair Value of Financial Instruments - Recurring Fair Value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	$ 189		$ 92
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Change in unrealized losses included in earnings for derivatives held as of March 31, 2020	(12)	$ (2)
Fair Value, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	175		83
Fair Value, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	14		9
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance as of January 1, 2020	(9)	0
Total losses for the period included in earnings	(5)	0
Purchases	0	(7)
Ending balance as of March 31, 2020	(14)	(7)
Change in unrealized losses included in earnings for derivatives held as of March 31, 2020	(5)	0
Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	15		9
Commodity contracts \| Fair Value, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	1		0
Commodity contracts \| Fair Value, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	14		9
Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	174	$ 83
Interest rate contracts \| Fair Value, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	174		83
Interest rate contracts \| Fair Value, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, fair value, gross liability	$ 0		$ 0

Fair Value of Financial Instruments - Narrative (Details) $ in Millions	Mar. 31, 2020 USD ($)	Jan. 29, 2019 facility MW
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percent of derivative liabilities using level 3 fair value inputs	7.00%
Fair value assets, measured on recurring basis, valuation techniques, impact of credit reserve to fair value	$ 19
Accounts receivable, related parties	13
PG&E
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of solar leases in portfolio \| facility		6
Accounts receivable, related parties, noncurrent	$ 5
Solar Facilities \| PG&E
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Steam and chilled water capacity, megawatts thermal equivalent \| MW		480
Solar Facilities \| Marsh Landing
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Steam and chilled water capacity, megawatts thermal equivalent \| MW		720

Fair Value of Financial Instruments - Significant Unobservable Inputs (Details) - Fair Value, Recurring - Energy Related Derivative - Level 3 $ in Millions	Mar. 31, 2020 USD ($) $ / MWh
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset \| $	$ 0
Derivative liability \| $	$ 14
Low \| Measurement Input, Commodity Forward Price \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability measurement input	7.93
High \| Measurement Input, Commodity Forward Price \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability measurement input	40.68
Weighted Average \| Measurement Input, Commodity Forward Price \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability measurement input	15.16

Derivative Instruments and Hedging Activities - Volumetric Underlying Derivative Transactions (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($) MMBTU MWh	Dec. 31, 2019 USD ($) MMBTU MWh
Natural Gas \| Long
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount (energy measure) \| MMBTU	1	2
Power \| Short
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount (energy measure) \| MWh	2	2
Interest \| Long
Derivatives, Fair Value [Line Items]
Derivative, notional amount \| $	$ 1,816	$ 1,788

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - FV of Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	$ (189)	$ (92)
Fair Value of gross derivative assets/(liabilities), net	(189)		$ (92)
Derivative asset fair value gross liability net of derivative liability fair value gross asset	0		0
Derivative asset, fair value, amount offset against collateral net of derivative liability, fair value, amount offset against collateral	(189)		(92)
Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(28)	(14)
Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(161)	(78)
Interest rate contracts current \| Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(6)	(3)
Interest rate contracts current \| Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(31)	(13)
Interest rate contracts long-term \| Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(22)	(11)
Interest rate contracts long-term \| Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(115)	(56)
Commodity contracts current \| Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(1)	0
Commodity contracts
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(15)	(9)
Derivative liability, fair value, gross asset	0	(1)
Derivative liability	(15)	(10)
Fair Value of gross derivative assets/(liabilities), net	(15)	(9)
Derivative asset fair value gross liability net of derivative liability fair value gross asset	0	(1)
Derivative asset, fair value, amount offset against collateral net of derivative liability, fair value, amount offset against collateral	(15)	(10)
Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(174)		(83)
Derivative liability, fair value, gross asset	0		1
Derivative liability	(174)		(82)
Fair Value of gross derivative assets/(liabilities), net	(174)		(83)
Derivative asset fair value gross liability net of derivative liability fair value gross asset	0		1
Derivative asset, fair value, amount offset against collateral net of derivative liability, fair value, amount offset against collateral	(174)		$ (82)
Commodity contracts long-term \| Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	$ (14)	$ (9)

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	$ 2,263	$ 2,224
Balance at end of period	2,264	2,145
Accumulated OCL ending balance, income tax expense (benefit)	(8)	(7)
Accumulated other comprehensive loss	(21)		$ (15)
Losses expected to be realized from OCL during the next 12 months, net of income tax benefit of $3	(9)	(8)
Losses expected to be realized from OCL during the next 12 months, tax expense (benefit)	(3)	(3)
AOCI Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(31)	(38)
Balance at end of period	(43)	(40)
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]
Reclassified from accumulated OCL to income due to realization of previously deferred amounts	2	3
Mark-to-market of cash flow hedge accounting contracts	(14)	(5)
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(15)	(18)
Balance at end of period	(21)	(19)
Accumulated other comprehensive loss	(21)	(19)
AOCI Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated other comprehensive loss	$ (22)	$ (21)

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - Impact to Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives	$ (12)	$ (2)
Interest rate contracts \| Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives	(79)	(18)
Energy Related Derivative
Derivative Instruments, Gain (Loss) [Line Items]
Loss on derivatives	$ (5)	$ (7)

Long-term Debt - Debt Table (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 6,634	$ 6,858
Current portion of long-term debt	(1,480)	(1,824)
Debt issuance costs, net	(73)	(78)
Long-term debt, excluding current maturities	5,081	4,956
2020 Convertible Notes
Debt Instrument [Line Items]
Long-term debt	$ 45	45
Debt instrument, interest rate, stated percentage	3.25%
2024 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 0	88
Debt instrument, interest rate, stated percentage	5.375%
2025 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 600	600
Debt instrument, interest rate, stated percentage	5.75%
2026 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 350	350
Debt instrument, interest rate, stated percentage	5.00%
2028 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 600	600
Debt instrument, interest rate, stated percentage	4.75%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023
Debt Instrument [Line Items]
Long-term debt	$ 180
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 \| Letter of Credit
Debt Instrument [Line Items]
Long-term debt	$ 180	0
Letters of credit outstanding, amount	62
Subtotal project-level debt:
Debt Instrument [Line Items]
Long-term debt	4,859	5,175
Alpine due 2022
Debt Instrument [Line Items]
Long-term debt	$ 119	119
Alpine due 2022 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Alpine due 2022 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 16
Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Long-term debt	$ 844	844
Alta Wind I-V lease financing arrangements, due 2034 and 2035 \| Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.696%
Alta Wind I-V lease financing arrangements, due 2034 and 2035 \| Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.015%
Alta Wind I-V lease financing arrangements, due 2034 and 2035 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 45
Buckthorn Solar, due 2025
Debt Instrument [Line Items]
Long-term debt	$ 129	129
Buckthorn Solar, due 2025 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Buckthorn Solar, due 2025 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 26
Carlsbad Holdco, due 2038
Debt Instrument [Line Items]
Long-term debt	$ 216	216
Debt instrument, interest rate, stated percentage	4.21%
Carlsbad Holdco, due 2038 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 5
Carlsbad Energy Holdings LLC, due 2027 and 2038
Debt Instrument [Line Items]
Long-term debt	582	582
Carlsbad Energy Holdings LLC, due 2027 and 2038 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	80
CVSR, due 2037
Debt Instrument [Line Items]
Long-term debt	$ 684	696
CVSR, due 2037 \| Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.339%
CVSR, due 2037 \| Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.775%
CVSR, due 2037 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 0
CVSR Holdco due 2037
Debt Instrument [Line Items]
Long-term debt	$ 176	182
Debt instrument, interest rate, stated percentage	4.68%
CVSR Holdco due 2037 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 13
Duquesne, due 2059
Debt Instrument [Line Items]
Long-term debt	$ 95	95
Debt instrument, interest rate, stated percentage	4.62%
El Segundo Energy Center, due 2023
Debt Instrument [Line Items]
Long-term debt	$ 269	303
El Segundo Energy Center, due 2023 \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
El Segundo Energy Center, due 2023 \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.375%
El Segundo Energy Center, due 2023 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 138
Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037
Debt Instrument [Line Items]
Long-term debt	327	328
Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	0
Laredo Ridge, due 2028
Debt Instrument [Line Items]
Long-term debt	$ 82	84
Laredo Ridge, due 2028 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.125%
Laredo Ridge, due 2028 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 10
Kansas South, due in 2030
Debt Instrument [Line Items]
Long-term debt	$ 24	24
Kansas South, due in 2030 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.25%
Kansas South, due in 2030 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 2
Kawailoa Solar Holdings LLC, due 2026
Debt Instrument [Line Items]
Long-term debt	$ 82	82
Kawailoa Solar Holdings LLC, due 2026 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.375%
Kawailoa Solar Holdings LLC, due 2026 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 13
Marsh Landing due 2023
Debt Instrument [Line Items]
Long-term debt	$ 196	206
Marsh Landing due 2023 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.125%
Marsh Landing due 2023 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 27
Oahu Solar Holdings LLC, due 2026
Debt Instrument [Line Items]
Long-term debt	$ 91	91
Oahu Solar Holdings LLC, due 2026 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.375%
Oahu Solar Holdings LLC, due 2026 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 17
Repowering Partnership Holdco LLC, due 2020
Debt Instrument [Line Items]
Long-term debt	$ 0	228
Repowering Partnership Holdco LLC, due 2020 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.85%
Repowering Partnership Holdco LLC, due 2020 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 0
South Trent, due 2028
Debt Instrument [Line Items]
Long-term debt	$ 42	43
South Trent, due 2028 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.35%
South Trent, due 2028 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 12
Tapestry, due 2031
Debt Instrument [Line Items]
Long-term debt	$ 152	156
Tapestry, due 2031 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.375%
Tapestry, due 2031 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 18
Utah Solar Portfolio, due 2022
Debt Instrument [Line Items]
Long-term debt	$ 254	254
Utah Solar Portfolio, due 2022 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.625%
Utah Solar Portfolio, due 2022 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 13
Viento, due 2023
Debt Instrument [Line Items]
Long-term debt	$ 39	42
Viento, due 2023 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Viento, due 2023 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 14
Walnut Creek, due 2023
Debt Instrument [Line Items]
Long-term debt	$ 166	175
Walnut Creek, due 2023 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Walnut Creek, due 2023 \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 83
Other
Debt Instrument [Line Items]
Long-term debt	290	$ 296
Other \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 23

Long-term Debt - Debt Disclosures (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Jan. 03, 2020	Feb. 29, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt			$ 6,634		$ 6,858
Loss on debt extinguishment			3	$ 0
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023
Debt Instrument [Line Items]
Long-term debt			180
2024 Senior Notes
Debt Instrument [Line Items]
Long-term debt			0		88
Debt instrument, repurchased face amount	$ 88
Debt instrument, redemption price, percentage	102.70%
Debt instrument, repurchase amount	$ 90
Loss on debt extinguishment	$ (3)
Construction Debt
Debt Instrument [Line Items]
Repayments of debt		$ 260
Letter of Credit \| Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023
Debt Instrument [Line Items]
Long-term debt			180		$ 0
Letters of credit outstanding, amount			$ 62

Earnings Per Share - Schedule of Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders
Net loss attributable to Clearway Energy, Inc.	$ (29)	$ (20)
Loss per weighted average common share - basic and diluted (in dollars per share)	$ (0.26)	$ (0.18)
Common Class A
Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders
Net loss attributable to Clearway Energy, Inc.	$ (9)	$ (6)
Weighted average number of common shares outstanding - basic and diluted (in dollars per share)	35	35
Loss per weighted average common share - basic and diluted (in dollars per share)	$ (0.26)	$ (0.18)
Common Class C
Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders
Net loss attributable to Clearway Energy, Inc.	$ (20)	$ (14)
Weighted average number of common shares outstanding - basic and diluted (in dollars per share)	79	73
Loss per weighted average common share - basic and diluted (in dollars per share)	$ (0.26)	$ (0.18)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Earnings Per Share - Antidilutive Equity Instruments Not Included in Calculation of Earnings Per Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Common Class C \| 2020 Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding antidilutive equity instruments (in shares)	2	2

Changes in Capital Structure - Equity Offering (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares
Class of Stock [Line Items]
Par value - common stock (in usd per share) \| $ / shares	$ 0.01
Aggregate sales price	$ 150,000,000
Shares of common stock sold (in shares) \| shares	478,384
Proceeds from issuance or sale of equity	$ 10,245,070
Clearway Energy LLC
Class of Stock [Line Items]
Ownership interest (as a percentage)	57.13%
Clearway Energy LLC \| CEG
Class of Stock [Line Items]
Ownership interest (as a percentage)	42.87%
ATM Program
Class of Stock [Line Items]
Class C common stock remaining available for issuance	$ 26,000,000

Changes in Capital Structure - Dividends (Details) - $ / shares				3 Months Ended
	Jun. 15, 2020	Jun. 01, 2020	Apr. 30, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Class of Stock [Line Items]
Preferred stock, authorized (in shares)				10,000,000		10,000,000
Par value - preferred stock (in usd per share)				$ 0.01		$ 0.01
Subsequent Event
Class of Stock [Line Items]
Dividends payable, date declared			Apr. 30, 2020
Common stock, dividends, per share, declared (in dollars per share)			$ 0.21
Dividends payable, date to be paid	Jun. 15, 2020
Dividends payable, date of record		Jun. 01, 2020
Common Class A
Class of Stock [Line Items]
Common stock, dividends, per share, cash paid (in dollars per share)				0.21	$ 0.20
Common Class C
Class of Stock [Line Items]
Common stock, dividends, per share, cash paid (in dollars per share)				$ 0.21	$ 0.20

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended
Segment Reporting (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating revenues	$ 258	$ 217
Cost of operations	93	83
Depreciation, amortization and accretion	102	85
General and Administrative Expense	9	6
Transaction and integration costs	1	1
Development costs	1	1
Operating Income	52	41
Equity in earnings of unconsolidated affiliates	(13)	3
Other income, net	2	3
Loss on debt extinguishment	(3)	0
Interest expense	(167)	(101)
Loss Before Income Taxes	(129)	(54)
Income tax benefit	(22)	(7)
Net Loss	(107)	(47)
Total Assets	9,555		$ 9,700
Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	258	217
Operating Segments \| Conventional Generation
Segment Reporting Information [Line Items]
Operating revenues	103	79
Cost of operations	24	17
Depreciation, amortization and accretion	33	25
General and Administrative Expense	0	0
Transaction and integration costs	0	0
Development costs	0	0
Operating Income	46	37
Equity in earnings of unconsolidated affiliates	2	2
Other income, net	0	1
Loss on debt extinguishment	0
Interest expense	(30)	(16)
Loss Before Income Taxes	18	24
Income tax benefit	0	0
Net Loss	18	24
Total Assets	2,677
Operating Segments \| Renewables
Segment Reporting Information [Line Items]
Operating revenues	107	88
Cost of operations	36	33
Depreciation, amortization and accretion	62	54
General and Administrative Expense	0	0
Transaction and integration costs	0	0
Development costs	0	0
Operating Income	9	1
Equity in earnings of unconsolidated affiliates	(15)	1
Other income, net	1	1
Loss on debt extinguishment	0
Interest expense	(109)	(59)
Loss Before Income Taxes	(114)	(56)
Income tax benefit	0	0
Net Loss	(114)	(56)
Total Assets	6,116
Operating Segments \| Thermal
Segment Reporting Information [Line Items]
Operating revenues	48	50
Cost of operations	33	33
Depreciation, amortization and accretion	7	6
General and Administrative Expense	1	1
Transaction and integration costs	0	0
Development costs	1	1
Operating Income	6	9
Equity in earnings of unconsolidated affiliates	0	0
Other income, net	1	0
Loss on debt extinguishment	0
Interest expense	(5)	(4)
Loss Before Income Taxes	2	5
Income tax benefit	0	0
Net Loss	2	5
Total Assets	625
Corporate
Segment Reporting Information [Line Items]
Operating revenues	0	0
Cost of operations	0	0
Depreciation, amortization and accretion	0	0
General and Administrative Expense	8	5
Transaction and integration costs	1	1
Development costs	0	0
Operating Income	(9)	(6)
Equity in earnings of unconsolidated affiliates	0	0
Other income, net	0	1
Loss on debt extinguishment	(3)
Interest expense	(23)	(22)
Loss Before Income Taxes	(35)	(27)
Income tax benefit	(22)	(7)
Net Loss	(13)	$ (20)
Total Assets	$ 137

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Income Tax Examination [Line Items]
Loss before income tax benefit	$ (129)	$ (54)
Income tax benefit	$ (22)	$ (7)
Effective income tax rate	17.10%	13.00%

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Related Party Transaction
General and administrative expenes	$ 9.0	$ 6.0
RENOM
Related Party Transaction
Expenses from transactions with related party	9.0	7.0
Due to affiliate	9.0		$ 7.0
CEG
Related Party Transaction
Expenses from transactions with related party	2.0	$ 2.0
General and administrative expenes	$ 0.6

Leases - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended
Leases - Lease Cost (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 4	$ 2
Variable lease cost	2	4
Total lease cost	$ 6	$ 6

Leases - Other Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
ROU Assets - operating leases	$ 221	$ 223
Short- term lease liability - operating leases	7	7
Long- term lease liability - operating leases	222	227
Total lease liability	229	234
Cash paid for operating leases	$ 7	$ 4
Weighted average remaining lease term (in years)	24 years	25 years
Weighted average discount rate (as a percentage)	4400000.00%	4400000.00%

Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Remainder of 2020	$ 10
2021	16
2022	16
2023	15
2024	16
Thereafter	300
Total lease payments	373
Less imputed interest	(144)
Total lease liability - operating leases	$ 229	$ 234

Leases - Revenue Related to Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessor, Lease, Description [Line Items]
Lease income	$ 225	$ 179
Energy Revenue
Lessor, Lease, Description [Line Items]
Lease income	118	100
Capacity Revenue
Lessor, Lease, Description [Line Items]
Lease income	107	79
Conventional Generation
Lessor, Lease, Description [Line Items]
Lease income	109	80
Conventional Generation \| Energy Revenue
Lessor, Lease, Description [Line Items]
Lease income	2	1
Conventional Generation \| Capacity Revenue
Lessor, Lease, Description [Line Items]
Lease income	107	79
Renewables
Lessor, Lease, Description [Line Items]
Lease income	115	99
Renewables \| Energy Revenue
Lessor, Lease, Description [Line Items]
Lease income	115	99
Renewables \| Capacity Revenue
Lessor, Lease, Description [Line Items]
Lease income	0	0
Thermal
Lessor, Lease, Description [Line Items]
Lease income	1	$ 0
Thermal \| Energy Revenue
Lessor, Lease, Description [Line Items]
Lease income	1
Thermal \| Capacity Revenue
Lessor, Lease, Description [Line Items]
Lease income	$ 0

Leases - Minimum Future Rent Payments (Details) $ in Millions	Mar. 31, 2020 USD ($)
Leases [Abstract]
Remainder of 2020	$ 358
2021	444
2022	450
2023	259
2024	106
Thereafter	1,605
Total lease payments	$ 3,222

Leases - Property, Plant and Equipment Related to Operating Leases (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (1,970)	$ (1,880)
Net property, plant and equipment	6,001	6,063
Assets Leased to Others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,020	6,942
Accumulated depreciation	(1,732)	(1,649)
Net property, plant and equipment	$ 5,288	$ 5,293

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (3,000,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,000,000)
Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (1,000,000)