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Fair Value of Financial Instruments
 12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments
For cash and cash equivalents, funds deposited by counterparties, restricted cash, accounts and other receivables, accounts payable and cash collateral paid and received in support of energy risk management activities, the carrying amount approximates fair value because of the short-term maturity of those instruments and are classified as Level 1 within the fair value hierarchy.
The estimated carrying value and fair value of the Company's long-term debt, including current portion, is as follows:
 As of December 31,
20242023
(In millions)Carrying AmountFair ValueCarrying AmountFair Value
Convertible Senior Notes$232 $509 $575 $739 
Other long-term debt, including current portion10,648 10,252 10,219 9,835 
Total long-term debt, including current portion(a)
$10,880 $10,761 $10,794 $10,574 
(a)Excludes deferred financing 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, the Term Loans and the Vivint Senior Secured Term Loan are based on quoted market prices and are classified as Level 2 within the fair value hierarchy.
Fair Value Accounting under ASC 820
ASC 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows:
•Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date. NRG's financial assets and liabilities utilizing Level 1 inputs include active exchange-traded securities, energy derivatives, and trust fund investments.
•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. NRG's financial assets and liabilities utilizing Level 2 inputs include fixed income securities, exchange-based derivatives, and over the counter derivatives such as swaps, options and forward contracts.
•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. NRG's financial assets and liabilities utilizing Level 3 inputs include infrequently-traded, non-exchange-based derivatives and commingled investment funds, and are measured using present value pricing models.
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 in its entirety.
Recurring Fair Value Measurements
Derivative assets and liabilities, debt securities, equity securities and trust fund investments, which were comprised of various U.S. debt and equity securities, are carried at fair market value.
The following tables present assets and liabilities measured and recorded at fair value on the Company's consolidated balance sheets on a recurring basis and their level within the fair value hierarchy:
 As of December 31, 2024
 Fair Value
(In millions)TotalLevel 1Level 2Level 3
Investments in securities (classified within other current and non-current assets)
$28 $— $28 $— 
Derivative assets: 
Interest rate contracts9 — 9 — 
Foreign exchange contracts22 — 22 — 
Commodity contracts(a)
3,368 528 2,645 195 
Equity securities measured using net asset value practical expedient (classified within other non-current assets)6 
Total assets
$3,433 $528 $2,704 $195 
Derivative liabilities: 
Interest rate contracts$3 $— $3 $— 
Foreign exchange contracts1 — 1 — 
Commodity contracts(a)
2,970 432 2,382 156 
Consumer Financing Program203 — — 203 
Total liabilities$3,177 $432 $2,386 $359 
(a)Excludes $997 million of derivative assets and $227 million of derivative liabilities that were elected as NPNS on October 1, 2024 and are no longer valued at fair value on a recurring basis. For further discussion, see Item 15 — Note 6, Accounting for Derivative Instruments and Hedging Activities
 As of December 31, 2023
 Fair Value
(In millions)TotalLevel 1Level 2Level 3
Investments in securities (classified within other current and non-current assets)$21 $— $21 $— 
Derivative assets:
Interest rate contracts12 — 12 — 
Foreign exchange contracts5 — 5 — 
Commodity contracts6,138 1,334 4,470 334 
Equity securities measured using net asset value practical expedient (classified within other non-current assets)6 
Total assets$6,182 $1,334 $4,508 $334 
Derivative liabilities:
Interest rate contracts$8 $— $8 $— 
Foreign exchange contracts9 — 9 — 
Commodity contracts5,356 1,413 3,728 215 
Consumer Financing Program134 — — 134 
Total liabilities$5,507 $1,413 $3,745 $349 

The following table reconciles, for the years ended December 31, 2024 and 2023, the beginning and ending balances for financial instruments that are recognized at fair value in the consolidated financial statements using significant unobservable inputs, for commodity derivatives:
 Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
Commodity Derivatives (a)
For the Year Ended December 31,
(In millions)20242023
Beginning balance$119 $505 
Total (losses) realized/unrealized included in earnings
(113)(164)
Purchases42 42 
Transfers into Level 3(b)
2 78 
Transfers out of Level 3(b)(c)
(11)(342)
Ending balance$39 $119 
(Losses) for the period included in earnings attributable to the change in unrealized gains or losses relating to assets or liabilities still held as of year-end $(55)$(46)
(a)Consists of derivatives assets and liabilities, net, excluding derivative liabilities from Consumer Financing Program, which are presented in a separate table below
(b)Transfers into/out of Level 3 are related to the availability of consensus pricing and external broker quotes, and are valued as of the end of the reporting period. Except for the transfers out of Level 3 noted below, all other transfers into/out of Level 3 are from/to Level 2
(c)For the year ended December 31, 2023, due to the change to use consensus pricing, there was a decrease in the number of contracts valued with prices provided by models and other valuation techniques, which resulted in a large transfer out of Level 3

Realized and unrealized gains and losses included in earnings that are related to the commodity derivatives are recorded in revenues and cost of operations.
The following table reconciles, for the years ended December 31, 2024 and 2023, the beginning and ending balances of the contractual obligations from the Consumer Financing Program that are recognized at fair value in the condensed consolidated financial statements, using significant unobservable inputs:
Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
Consumer Financing Program
For the Year Ended December 31,
(In millions)20242023
Beginning balance$(134)$— 
Contractual obligations added from the acquisition of Vivint Smart Home
— (112)
New contractual obligations(147)(68)
Settlements92 62 
Total losses included in earnings(14)(16)
Ending balance$(203)$(134)
Gains and losses that are related to the Consumer Financing Program derivative are recorded in other income, net.
Derivative fair value measurements
The Company's contracts consist of non-exchange-traded contracts valued using prices provided by external sources and exchange-traded contracts with readily available quoted market prices. Beginning in of the fourth quarter of 2023, the fair value of non-exchange traded contracts were based on consensus pricing provided by independent pricing services. The pricing data was compiled from market makers with longer dated tenors as compared to broker quotes, enhancing reliability and increasing transparency.
Prior to the fourth quarter of 2023, the Company valued derivatives based on price quotes from brokers in active markets who regularly facilitate those transactions. For the majority of markets that NRG participates in, the Company would receive broker quotes from multiple sources and reflected the average of the bid-ask mid-point prices. The terms for which such price information is available vary by commodity, region and product. The Company believes both sources of price quotes are executable.
The remainder of the assets and liabilities represents 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 observable market data with similar characteristics. As of December 31, 2024, contracts valued with prices provided by models and other valuation techniques make up 6% of derivative assets and 11% of derivative liabilities. The fair value of each contract is discounted using a risk free interest rate. In addition, the Company applies a credit reserve to reflect credit risk, which for foreign exchange contracts and interest rate swaps is calculated utilizing the bilateral method based on published default probabilities. For commodities, to the extent that NRG's net exposure under a specific master agreement is an asset, the Company uses the counterparty's default swap rate. If the exposure under a specific master agreement is a liability, the Company uses NRG's default swap rate. For foreign exchange contracts, 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 NRG's liabilities or that a market participant would be willing to pay for NRG's assets. As of December 31, 2024, the credit reserve resulted in a $1 million decrease primarily within cost of operations. As of December 31, 2023, the credit reserve resulted in $18 million decrease primarily within cost of operations.
The fair values in each category reflect the level of forward prices and volatility factors as of December 31, 2024 and may change as a result of changes in these factors. Management uses its best estimates to determine the fair value of commodity and derivative contracts NRG holds and sells. These estimates consider various factors including closing exchange, consensus and over-the-counter price quotations, time value, volatility factors and credit exposure. It is possible, however, that future market prices could vary from those used in recording assets and liabilities from energy marketing and trading activities and such variations could be material.
NRG's significant positions classified as Level 3 include physical and financial natural gas, power, capacity contracts and renewable energy certificates executed in illiquid markets as well as financial transmission rights ("FTRs"). The significant unobservable inputs used in developing fair value include illiquid natural gas and power location pricing, which is derived as a basis to liquid locations. The basis spread is based on observable market data when available or derived from historic prices and forward market prices from similar observable markets when not available. Forward capacity prices are based on market information, forecasted future electricity demand and supply, past auctions and internally developed pricing models. Renewable energy certificate prices are based on market information and internally developed pricing models. For FTRs, NRG uses the most recent auction prices to derive the fair value. The Consumer Financing Program derivatives are valued using a discounted cash flow model, with inputs consisting of available market data, such as market yield discount rates, as well as unobservable internally derived assumptions, such as collateral prepayment rates, collateral default rates and credit loss rates.
The following tables quantify the significant unobservable inputs used in developing the fair value of the Company's Level 3 positions as of December 31, 2024 and 2023:
Significant Unobservable Inputs
December 31, 2024
Fair ValueInput/Range
(in millions, except as noted)AssetsLiabilitiesValuation TechniqueSignificant Unobservable InputLowHighWeighted Average
Natural Gas Contracts$56 $15 Discounted Cash FlowForward Market Price ($ per MMBtu)$2 $27 $4 
Power Contracts57 86 Discounted Cash FlowForward Market Price ($ per MWh)0 109 39 
Capacity Contracts34 13 Discounted Cash FlowForward Market Price ($ per MW/Day)16 510 220 
Renewable Energy Certificates30 14 Discounted Cash FlowForward Market Price ($ per Certificate)2 375 15 
FTRs18 28 Discounted Cash FlowAuction Prices ($ per MWh)(50)16,180 0 
Consumer Financing Program— 203 Discounted Cash FlowCollateral Default Rates0.52 %76.80 %11.71 %
Discounted Cash FlowCollateral Prepayment Rates2.00 %3.00 %2.83 %
Discounted Cash FlowCredit Loss Rates6.00 %60.00 %14.22 %
$195 $359 
Significant Unobservable Inputs
December 31, 2023
Fair ValueInput/Range
(in millions, except as noted)AssetsLiabilitiesValuation TechniqueSignificant Unobservable InputLowHighWeighted Average
Natural Gas Contracts$39 $65 Discounted Cash FlowForward Market Price ($ per MMBtu)$1 $15 $3 
Power Contracts197 66 Discounted Cash FlowForward Market Price ($ per MWh)1 210 47 
Capacity Contracts21 33 Discounted Cash FlowForward Market Price ($ per MW/Day)49 658 285 
Renewable Energy Certificates58 14 Discounted Cash FlowForward Market Price ($ per Certificate)2 320 15 
FTRs19 37 Discounted Cash FlowAuction Prices ($ per MWh)(58)252 0 
Consumer Financing Program— 134 Discounted Cash FlowCollateral Default Rates0.43 %93.30 %8.12 %
Discounted Cash FlowCollateral Prepayment Rates2.00 %3.00 %2.95 %
Discounted Cash FlowCredit Loss Rates6.00 %60.00 %12.57 %
$334 $349 
The following table provides sensitivity of fair value measurements to increases/(decreases) in significant unobservable inputs as of December 31, 2024 and 2023:
Significant Unobservable InputPositionChange In InputImpact on Fair Value Measurement
Forward Market Price Natural Gas/Power/Capacity/Renewable Energy CertificatesBuyIncrease/(Decrease)Higher/(Lower)
Forward Market Price Natural Gas/Power/Capacity/Renewable Energy CertificatesSellIncrease/(Decrease)Lower/(Higher)
FTR PricesBuyIncrease/(Decrease)Higher/(Lower)
FTR PricesSellIncrease/(Decrease)Lower/(Higher)
Collateral Default Ratesn/aIncrease/(Decrease)Higher/(Lower)
Collateral Prepayment Ratesn/aIncrease/(Decrease)Lower/(Higher)
Credit Loss Ratesn/aIncrease/(Decrease)Higher/(Lower)
Under the guidance of ASC 815, entities may choose to offset cash collateral posted or received against the fair value of derivative positions executed with the same counterparties under the same master netting agreements. The Company has chosen not to offset positions as defined in ASC 815. As of December 31, 2024, the Company recorded $309 million of cash collateral posted and $199 million of cash collateral received on its balance sheet.
Concentration of Credit Risk
In addition to the credit risk discussion as disclosed in Note 2, Summary of Significant Accounting Policies, the following item is a discussion of the concentration of credit risk for the Company's financial instruments. Credit risk relates to the risk of loss resulting from non-performance or non-payment by counterparties pursuant to the terms of their contractual obligations. The Company monitors and manages credit risk through credit policies that include: (i) an established credit approval process; (ii) a daily monitoring of counterparties' credit limits; (iii) the use of credit mitigation measures such as margin, collateral, prepayment arrangements, or volumetric limits; (iv) the use of payment netting agreements; and (v) the use of master netting
agreements that allow for the netting of positive and negative exposures of various contracts associated with a single counterparty. Risks surrounding counterparty performance and credit could ultimately impact the amount and timing of expected cash flows. The Company seeks to mitigate counterparty risk by having a diversified portfolio of counterparties. The Company also has credit protection within various agreements to call on additional collateral support if and when necessary. Cash margin is collected and held at the Company to cover the credit risk of the counterparty until positions settle.
Counterparty Credit Risk
As of December 31, 2024, counterparty credit exposure, excluding credit exposure from RTOs, ISOs, and registered commodity exchanges and certain long-term agreements, was $1.7 billion and NRG held collateral (cash and letters of credit) against those positions of $288 million, resulting in a net exposure of $1.5 billion. NRG periodically receives collateral from counterparties in excess of their exposure. Collateral amounts shown include such excess while net exposure shown excludes excess collateral received. Approximately 69% of the Company's exposure before collateral is expected to roll off by the end of 2026. Counterparty credit exposure is valued through observable market quotes and discounted at a risk free interest rate. The following tables highlight net counterparty credit exposure by industry sector and by counterparty credit quality. Net counterparty credit exposure is defined as the aggregate net asset position for NRG with counterparties where netting is permitted under the enabling agreement and includes all cash flow, mark-to-market and NPNS, and non-derivative transactions. The exposure is shown net of collateral held and includes amounts net of receivables or payables.
Category
Net Exposure (a) (b)
(% of Total)
Utilities, energy merchants, marketers and other74 %
Financial institutions26 
Total
100 %
Category
Net Exposure (a) (b)
(% of Total)
Investment grade55 %
Non-Investment grade/Non-Rated45 
Total
100 %
(a)Counterparty credit exposure excludes coal transportation contracts because of the unavailability of market prices
(b)The figures in the tables above exclude potential counterparty credit exposure related to RTOs, ISOs, registered commodity exchanges and certain long term contracts
The Company had no exposure to wholesale counterparties in excess of 10% of the total net exposure discussed above as of December 31, 2024. Changes in hedge positions and market prices will affect credit exposure and counterparty concentration.
RTOs and ISOs
The Company participates in the organized markets of CAISO, ERCOT, AESO, IESO, ISO-NE, MISO, NYISO and PJM, known as RTOs or ISOs. Trading in the majority of these markets is approved by FERC, whereas in the case of ERCOT, it is approved by the PUCT, and whereas in the case of AESO and IESO, both exist provincially with AESO primarily subject to Alberta Utilities Commission and the IESO subject to the Ontario Energy Board. These ISOs may include credit policies that, under certain circumstances, require that losses arising from the default of one member on spot market transactions be shared by the remaining participants. As a result, the counterparty credit risk to these markets is limited to NRG’s share of the overall market and are excluded from the above exposures.
Exchange Traded Transactions
The Company enters into commodity transactions on registered exchanges, notably ICE, NYMEX and Nodal. These clearinghouses act as the counterparty and transactions are subject to extensive collateral and margining requirements. As a result, these commodity transactions have limited counterparty credit risk.
Long-Term Contracts
Counterparty credit exposure described above excludes credit risk exposure under certain long term contracts, primarily solar under Renewable PPAs. As external sources or observable market quotes are not always available to estimate such exposure, the Company values these contracts based on various techniques including, but not limited to, internal models based on a fundamental analysis of the market and extrapolation of observable market data with similar characteristics. Based on these valuation techniques, as of December 31, 2024, aggregate credit risk exposure managed by NRG to these counterparties was approximately $868 million for the next five years.
Retail Customer Credit Risk
The Company is exposed to retail credit risk through the Company's retail electricity and gas providers, which serve Home and Business customers. Retail credit risk results in losses when a customer fails to pay for services rendered. The losses may result from both nonpayment of customer accounts receivable and the loss of in-the-money forward value. The Company manages retail credit risk through the use of established credit policies that include monitoring of the portfolio and the use of credit mitigation measures such as deposits or prepayment arrangements.
As of December 31, 2024, the Company's retail customer credit exposure to Home and Business customers was diversified across many customers and various industries, as well as government entities. Current economic conditions may affect the Company's customers' ability to pay bills in a timely manner, which could increase customer delinquencies and may lead to an increase in credit losses. The Company's provision for credit losses was $314 million, $251 million, and $11 million for the years ended December 31, 2024, 2023, and 2022, respectively. During the year ended December 31, 2022, the provision for credit losses included the Company's loss mitigation efforts recognized as income of $126 million related to Winter Storm Uri.