Fair Value of Financial Instruments
Fair Value Accounting under ASC 820
ASC 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows:
Level 1—quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date.
Level 2—inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.
Level 3—unobservable inputs for the asset or liability only used when there is little, if any, market activity for the asset or liability at the measurement date.
In accordance with ASC 820, the Company determines the level in the fair value hierarchy within which each fair value measurement in its entirety falls, based on the lowest level input that is significant to the fair value measurement.
For cash and cash equivalents, restricted cash, accounts receivable — trade, accounts receivable — affiliates, accounts payable — trade, accounts payable — affiliates and accrued expenses and other current 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 carrying amount and estimated fair value of the Company’s recorded financial instrument not carried at fair market value or that does not approximate fair value is as follows:
As of December 31, 2025As of December 31, 2024
Carrying AmountFair ValueCarrying AmountFair Value
(In millions)
Liabilities:
Long-term debt, including current portion (a)
$8,676 $8,382 $7,237 $6,715 
(a) Excludes net debt issuance costs, which are recorded as a reduction to long-term debt on the Company’s consolidated balance sheets.
The fair value of the Company’s publicly-traded long-term debt is based on quoted market prices and is classified as Level 2 within the fair value hierarchy. The fair value of debt securities, non-publicly traded long-term debt and certain notes receivable of the Company are based on expected future cash flows discounted at market interest rates, or current interest rates for similar instruments with equivalent credit quality and are classified as Level 3 within the fair value hierarchy. The following table presents the level within the fair value hierarchy for long-term debt, including current portion:
As of December 31, 2025As of December 31, 2024
Level 2Level 3Level 2Level 3
 (In millions)
Long-term debt, including current portion$2,032 $6,350 $1,922 $4,793 
Recurring Fair Value Measurements
The Company records its derivative assets and liabilities at fair market value on its consolidated balance sheets. The following table presents assets and liabilities measured and recorded at fair value on the Company’s consolidated balance sheets on a recurring basis and their level within the fair value hierarchy:
As of December 31, 2025As of December 31, 2024
Fair Value (a)
Fair Value (a)
(In millions)
Level 2 (b)
Level 3
Level 2 (b)
Level 3
Derivative assets
Energy-related commodity contracts (c)
$$13 $— $
Interest rate contracts142 — 166 — 
Other financial instruments (d)
— — 10 
Total assets$143 $20 $166 $19 
Derivative liabilities
Energy-related commodity contracts (e)
$— $333 $— $371 
Interest rate contracts27 — — — 
Total liabilities$27 $333 $— $371 
(a) There were no derivative assets or liabilities classified as Level 1 as of December 31, 2025 and 2024.
(b) The Company’s interest rate swaps are measured at fair value using an income approach, which use readily observable inputs, such as forward interest rates (e.g., SOFR) and contractual terms to estimate fair value.
(c) Includes short-term backbone transportation service contracts classified as Level 2 and heat rate call option contracts classified as Level 3.
(d) Includes SREC contract.
(e) Includes long-term power commodity contracts and heat rate call option contracts classified as Level 3. As of December 31, 2025 and 2024, $330 million and $366 million, respectively, related to long-term power commodity contracts, and $3 million and $5 million, respectively, related to heat rate call option contracts.
The following table reconciles the beginning and ending balances for instruments that are recognized at fair value in the consolidated financial statements using significant unobservable inputs:
Year ended December 31,
20252024
(In millions)Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
Beginning balance$(352)$(317)
Settlements83 (2)
Total losses for the period included in earnings(44)(33)
Ending balance$(313)$(352)
Change in unrealized losses included in earnings for derivatives and other financial instruments held as of December 31,$(44)$(33)
Derivative and Financial Instruments Fair Value Measurements
The Company’s contracts are non-exchange-traded and valued using prices provided by external sources. The Company uses quoted observable forward prices to value its energy-related commodity contracts, which includes long-term power commodity contracts and heat rate call option contracts. To the extent that observable forward prices are not available, the quoted prices reflect the average of the forward prices from the prior year, adjusted for inflation. As of December 31, 2025, contracts valued with prices provided by models and other valuation techniques make up 8% of derivative assets, 93% of derivative liabilities and 100% of other financial instruments.
The Company’s significant positions classified as Level 3 relate to physical and financial energy-related contracts, including long-term power commodity contracts and heat rate call option contracts executed in illiquid markets. The significant unobservable inputs used in developing fair value include illiquid power tenors and location pricing, which is derived by extrapolating pricing as a basis to liquid locations. The tenor pricing and basis spread are based on observable market data when available or derived from historic prices and forward market prices from similar observable markets when not available.
The following tables quantify the significant unobservable inputs used in developing the fair value of the Company’s Level 3 positions:
December 31, 2025
Fair ValueInput/Range
AssetsLiabilitiesValuation TechniqueSignificant Unobservable InputLowHighWeighted Average
(In millions)
Long-term Power Commodity Contracts$— $330 Discounted Cash FlowForward Market Price ($ per MWh)$34.04 $89.73 $56.51 
Heat Rate Call Option Commodity Contracts13 Option ModelForward Market Price ($ per MWh)$(29.26)$260.77 $42.23 
Option ModelForward Market Price ($ per MMBtu)$0.92 $10.15 $3.02 
Other Financial Instruments— 
Discounted Cash Flow
Forecast annual generation levels of certain DG solar facilities 60,047 MWh120,094 MWh108,791 MWh
December 31, 2024
Fair ValueInput/Range
AssetsLiabilitiesValuation TechniqueSignificant Unobservable InputLowHighWeighted Average
(In millions)
Long-term Power Commodity Contracts$— $366 Discounted Cash FlowForward Market Price ($ per MWh)$21.60 $80.82 $45.44 
Heat Rate Call Option Commodity ContractsOption ModelForward Market Price ($ per MWh)$(19.30)$1,011.79 $45.87 
Option ModelForward Market Price $ (per MMBtu)$0.85 $10.55 $3.25 
Other Financial Instruments10 — 
Discounted Cash Flow
Forecast annual generation levels of certain DG solar facilities 59,425 MWh118,850 MWh111,091 MWh
The following table provides the impact on the fair value measurements to increases/(decreases) in significant unobservable inputs as of December 31, 2025 and 2024:
TypeSignificant Observable InputPositionChange In InputImpact on Fair Value Measurement
Energy-Related Commodity ContractsForward Market Price Power SellIncrease/(Decrease)Lower/(Higher)
Energy-Related Commodity ContractsForward Market Price GasSellIncrease/(Decrease)Higher/(Lower)
Other Financial InstrumentsForecast Generation LevelsSellIncrease/(Decrease)Higher/(Lower)
The fair value of each contract is discounted using a risk-free interest rate. In addition, a credit reserve is applied to reflect credit risk, which is, for interest rate swaps, calculated based on credit default swaps using the bilateral method. For commodities, to the extent that the Net Exposure under a specific master agreement is an asset, the Company uses the counterparty’s default swap rate. If the Net Exposure under a specific master agreement is a liability, the Company uses a proxy of its own default swap rate. For interest rate swaps and commodities, the credit reserve is added to the discounted fair value to reflect the exit price that a market participant would be willing to receive to assume the liabilities or that a market participant would be willing to pay for the assets. As of December 31, 2025, the non-performance reserve was a $16 million gain recorded primarily to total operating revenues 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 as disclosed in Note 2, Summary of Significant Accounting Policies, the following item is a discussion of the concentration of credit risk for the Company’s financial instruments. Credit risk relates to the risk of loss resulting from non-performance or non-payment by counterparties pursuant to the terms of their contractual obligations. The Company monitors and manages credit risk through credit policies that include: (i) an established credit approval process; (ii) monitoring of counterparties’ credit limits on as needed basis; (iii) as applicable, the use of credit mitigation measures such as margin, collateral, prepayment arrangements, or volumetric limits; (iv) the use of payment netting agreements; and (v) the use of master netting agreements that allow for the netting of positive and negative exposures of various contracts associated with a single counterparty. Risks surrounding counterparty performance and credit could ultimately impact the amount and timing of expected cash flows. The Company seeks to mitigate counterparty risk by having a diversified portfolio of counterparties.
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. A significant portion of these energy-related commodity 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. Certain subsidiaries of the Company sell the output of their facilities to PG&E, a significant counterparty of the Company, under long-term PPAs, and PG&E’s credit rating is below investment-grade.

Historical Timeline

Fiscal YearFiled
2025Feb 24, 2026Showing above
2024Feb 25, 2025
2023Feb 22, 2024
2022Feb 23, 2023
2021Feb 28, 2022
2020Mar 1, 2021
2019Mar 2, 2020
2018Feb 28, 2019
2017Mar 1, 2018
2016Feb 28, 2017
2015Feb 29, 2016

About Fair Value Disclosures

Fair value disclosures classify all assets and liabilities measured at fair value into a three-level hierarchy: Level 1 (quoted market prices), Level 2 (observable inputs like yield curves), and Level 3 (unobservable inputs requiring management estimates). The proportion of Level 3 assets directly reflects how much of the balance sheet depends on internal models rather than market evidence.

Key signals: a growing Level 3 balance relative to total fair-value assets increases valuation uncertainty and earnings volatility risk. Watch for transfers between levels — assets moving from Level 2 to Level 3 often signal deteriorating market liquidity. Unrealized gains and losses on Level 3 positions flow through earnings or other comprehensive income, so large swings deserve scrutiny. For financial institutions, examine the sensitivity disclosures that show how Level 3 valuations change under alternative assumptions. Compare the fair value of debt against its carrying amount to gauge hidden leverage.