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Fair Value
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value FAIR VALUE
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable inputs. The Registrants make certain assumptions they believe that market participants would use in pricing assets or liabilities, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. Credit risk of the Registrants and their counterparties is incorporated in the valuation of assets and liabilities through the use of credit reserves, the impact of which was immaterial at December 31, 2025 and 2024. The Registrants believe they use valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.
A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. All assets and liabilities are required to be classified in their entirety based on the lowest level of input that is significant to the fair value measurement in its entirety. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. The Registrants classify fair value balances based on the fair value hierarchy defined as follows:
•Level 1 — Consists of unadjusted quoted prices in active markets for identical assets or liabilities that the Registrants have the ability to access as of the reporting date.
•Level 2 — Consists of 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 — Consists of unobservable inputs for assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost-benefit constraints.
The following table presents assets and liabilities for DTE Energy measured and recorded at fair value on a recurring basis:
December 31, 2025December 31, 2024
Level 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net BalanceLevel 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net Balance
(In millions)
Assets
Cash equivalents and Restricted cash(c)
$176 $— $— $— $— $176 $11 $— $— $— $— $11 
Nuclear decommissioning trusts
Equity securities987 — — 201 — 1,188 856 — — 147 — 1,003 
Fixed income securities133 460 — 133 — 726 124 414 — 112 — 650 
Private equity and other— — — 358 — 358 16 — — 333 — 349 
Hedge funds and similar investments228 17 — — — 245 151 16 — 61 — 228 
Cash equivalents35 — — — — 35 26 — — — — 26 
Other investments(d)
Equity securities84 — — — — 84 72 — — — — 72 
Fixed income securities9 2 — — — 11 7 — — — — 7 
Cash equivalents38 — — — — 38 29 — — — — 29 
Derivative assets
Commodity contracts(e)
Natural gas207 56 109 — (235)137 242 81 105 — (285)143 
Electricity127 115 33 — (194)81 67 69 51 — (116)71 
Environmental & Other— 46 11 — (46)11 1 47 10 — (46)12 
Other contracts— 3 — — — 3 — 21 — — — 21 
Total derivative assets334 220 153 — (475)232 310 218 166 — (447)247 
Total$2,024 $699 $153 $692 $(475)$3,093 $1,602 $648 $166 $653 $(447)$2,622 
Liabilities
Derivative liabilities
Commodity contracts(e)
Natural gas$(196)$(51)$(82)$— $227 $(102)$(217)$(70)$(123)$— $272 $(138)
Electricity(124)(59)(52)— 186 (49)(71)(52)(27)— 114 (36)
Environmental & Other(1)(31)— — 32 — (2)(39)(3)— 44 — 
Other contracts— (1)— — — (1)— (1)— — — (1)
Total$(321)$(142)$(134)$— $445 $(152)$(290)$(162)$(153)$— $430 $(175)
Net Assets (Liabilities) at end of period$1,703 $557 $19 $692 $(30)$2,941 $1,312 $486 $13 $653 $(17)$2,447 
Assets
Current$426 $130 $102 $— $(339)$319 $223 $170 $106 $— $(326)$173 
Noncurrent1,598 569 51 692 (136)2,774 1,379 478 60 653 (121)2,449 
Total Assets$2,024 $699 $153 $692 $(475)$3,093 $1,602 $648 $166 $653 $(447)$2,622 
Liabilities
Current$(240)$(106)$(67)$— $327 $(86)$(219)$(129)$(93)$— $323 $(118)
Noncurrent(81)(36)(67)— 118 (66)(71)(33)(60)— 107 (57)
Total Liabilities$(321)$(142)$(134)$— $445 $(152)$(290)$(162)$(153)$— $430 $(175)
Net Assets (Liabilities) at end of period$1,703 $557 $19 $692 $(30)$2,941 $1,312 $486 $13 $653 $(17)$2,447 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Amounts represent the impact of master netting agreements that allow DTE Energy to net gain and loss positions and cash collateral held or placed with the same counterparties.
(c)Amounts include $10 million and $8 million recorded in Restricted cash on DTE Energy's Consolidated Statements of Financial Position at December 31, 2025 and December 31, 2024, respectively. All other amounts are included in Cash and cash equivalents on DTE Energy's Consolidated Statements of Financial Position.
(d)Excludes cash surrender value of life insurance investments and certain securities classified as held-to-maturity that are recorded at amortized cost and not material to the consolidated financial statements.
(e)For contracts with a clearing agent, DTE Energy nets all activity across commodities. This can result in some individual commodities having a contra balance.
The following table presents assets for DTE Electric measured and recorded at fair value on a recurring basis as of:
December 31, 2025December 31, 2024
Level 1Level 2Level 3
Other(a)
Net Balance Level 1Level 2Level 3
Other(a)
Net Balance
(In millions)
Assets
Cash equivalents and Restricted cash(b)
$83 $— $— $— $83 $8 $— $— $— $8 
Nuclear decommissioning trusts
Equity securities987 — — 201 1,188 856 — — 147 1,003 
Fixed income securities133 460 — 133 726 124 414 — 112 650 
Private equity and other— — — 358 358 16 — — 333 349 
Hedge funds and similar investments228 17 — — 245 151 16 — 61 228 
Cash equivalents35 — — — 35 26 — — — 26 
Other investments
Equity securities33 — — — 33 26 — — — 26 
Fixed income securities— 2 — — 2 — — — — — 
Cash equivalents26 — — — 26 19 — — — 19 
Derivative assets — FTRs— — 11 — 11 — — 9 — 9 
Total$1,525 $479 $11 $692 $2,707 $1,226 $430 $9 $653 $2,318 
Assets
Current$83 $— $11 $— $94 $8 $— $9 $— $17 
Noncurrent1,442 479 — 692 2,613 1,218 430 — 653 2,301 
Total Assets$1,525 $479 $11 $692 $2,707 $1,226 $430 $9 $653 $2,318 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Amounts include $10 million and $8 million recorded in Restricted cash on DTE Electric's Consolidated Statements of Financial Position at December 31, 2025 and December 31, 2024, respectively. All other amounts are included in Cash and cash equivalents on DTE Electric's Consolidated Statements of Financial Position.
Cash Equivalents
Cash equivalents include investments with maturities of three months or less when purchased. The cash equivalents shown in the fair value table are comprised of short-term investments in money market funds.
Nuclear Decommissioning Trusts and Other Investments
The nuclear decommissioning trusts and other investments hold debt and equity securities directly and indirectly through commingled funds. Exchange-traded debt and equity securities held directly, as well as publicly traded commingled funds, are valued using quoted market prices in actively traded markets. Non-exchange traded fixed income securities are valued based upon quotations available from brokers or pricing services.
Non-publicly traded commingled funds holding exchange-traded equity or debt securities are valued based on stated NAVs. There are no significant restrictions for these funds and investments may be redeemed with 7 to 65 days notice depending on the fund. There is no intention to sell the investment in these commingled funds.
Private equity and other assets include a diversified group of funds that are primarily classified as NAV assets. These funds primarily invest in limited partnerships, including private equity, private real estate and private credit. Distributions are received through the liquidation of the underlying fund assets over the life of the funds. There are generally no redemption rights. The limited partner must hold the fund for its life or find a third-party buyer, which may need to be approved by the general partner. The funds are established with varied contractual durations generally in the range of 7 years to 12 years. The fund life can often be extended by several years by the general partner, and further extended with the approval of the limited partners. Unfunded commitments related to these investments totaled $179 million and $120 million as of December 31, 2025 and 2024, respectively.
Hedge funds and similar investments utilize a diversified group of strategies that attempt to capture uncorrelated sources of return. These investments include publicly traded mutual funds that are valued using quoted prices in actively traded markets, as well as insurance-linked and asset-backed securities and that are valued using quotations from broker or pricing services and limited partnerships that are classified as NAV assets.
For pricing the nuclear decommissioning trusts and other investments, a primary price source is identified by asset type, class, or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary source of a given security if the trustee determines that another price source is considered preferable. The Registrants have obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices.
Derivative Assets and Liabilities
Derivative assets and liabilities are comprised of physical and financial derivative contracts, including futures, forwards, options, and swaps that are both exchange-traded and over-the-counter traded contracts. Various inputs are used to value derivatives depending on the type of contract and availability of market data. Exchange-traded derivative contracts are valued using quoted prices in active markets. The Registrants consider the following criteria in determining whether a market is considered active: frequency in which pricing information is updated, variability in pricing between sources or over time, and the availability of public information. Other derivative contracts are valued based upon a variety of inputs including commodity market prices, broker quotes, interest rates, credit ratings, default rates, market-based seasonality, and basis differential factors. The Registrants monitor the prices that are supplied by brokers and pricing services and may use a supplemental price source or change the primary price source of an index if prices become unavailable or another price source is determined to be more representative of fair value. The Registrants have obtained an understanding of how these prices are derived. Additionally, the Registrants selectively corroborate the fair value of their transactions by comparison of market-based price sources. Mathematical valuation models are used for derivatives for which external market data is not readily observable, such as contracts which extend beyond the actively traded reporting period. The Registrants have established a Risk Management Committee whose responsibilities include directly or indirectly ensuring all valuation methods are applied in accordance with predefined policies. The development and maintenance of the Registrants' forward price curves has been assigned to DTE Energy's Risk Management Department, which is separate and distinct from the trading functions within DTE Energy.
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Energy:
Year Ended December 31, 2025Year Ended December 31, 2024
Natural GasElectricityOtherTotalNatural GasElectricityOtherTotal
(In millions)
Net Assets (Liabilities) as of January 1$(18)$24 $7 $13 $22 $47 $6 $75 
Transfers into Level 3 from Level 22 — — 2 1 — — 1 
Transfers from Level 3 into Level 2— — 2 2 — 74 — 74 
Total gains (losses)
Included in earnings(a)
(25)329 4 308 16 225 (1)240 
Recorded in Regulatory liabilities— — 19 19 — — 21 21 
Purchases, issuances, and settlements:
Settlements68 (372)(21)(325)(57)(322)(19)(398)
Net Assets (Liabilities) as of December 31$27 $(19)$11 $19 $(18)$24 $7 $13 
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31(a)
$23 $(19)$— $4 $(47)$118 $(159)$(88)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$— $— $11 $11 $— $— $9 $9 
_______________________________________
(a)Amounts are reflected in Operating Revenues — Non-utility operations and Fuel, purchased power, gas, and other — non-utility in DTE Energy's Consolidated Statements of Operations.
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Electric:
Year Ended December 31,
20252024
(In millions)
Net Assets as of January 1$9 $7 
Total gains recorded in Regulatory liabilities19 21 
Purchases, issuances, and settlements:
Settlements(17)(19)
Net Assets as of December 31$11 $9 
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$11 $9 
Derivatives are transferred between levels primarily due to changes in the source data used to construct price curves as a result of changes in market liquidity. Transfers in and transfers out are reflected as if they had occurred at the beginning of the period. There were no transfers from or into Level 3 for DTE Electric during the years ended December 31, 2025 and 2024.
The following tables present the unobservable inputs related to DTE Energy's Level 3 assets and liabilities:
December 31, 2025
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$109 $(82)Discounted Cash FlowForward basis price (per MMBtu)$(1.35)—$9.33 /MMBtu$(0.13)/MMBtu
Electricity$33 $(52)Discounted Cash FlowForward basis price (per MWh)$(21.82)—$17.79 /MWh$(5.58)/MWh
December 31, 2024
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$105 $(123)Discounted Cash FlowForward basis price (per MMBtu)$(1.24)—$9.96 /MMBtu$(0.05)/MMBtu
Electricity$51 $(27)Discounted Cash FlowForward basis price (per MWh)$(16.34)—$17.28 /MWh$(2.74)/MWh
The unobservable inputs used in the fair value measurement of the electricity and natural gas commodity types consist of inputs that are less observable due in part to lack of available broker quotes, supported by little, if any, market activity at the measurement date or are based on internally developed models. Certain basis prices (i.e., the difference in pricing between two locations) included in the valuation of natural gas and electricity contracts were deemed unobservable. The weighted average price for unobservable inputs was calculated using the average of forward price curves for natural gas and electricity and the absolute value of monthly volumes.
The inputs listed above would have had a direct impact on the fair values of the above security types if they were adjusted. A significant increase (decrease) in the basis price would have resulted in a higher (lower) fair value for long positions, with offsetting impacts to short positions.
Fair Value of Financial Instruments
The following table presents the carrying amount and fair value of financial instruments for DTE Energy:
December 31, 2025December 31, 2024
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable(a), excluding lessor finance leases
$1,453 $— $— $1,482 $884 $— $— $904 
Short-term borrowings$882 $— $882 $— $1,067 $— $1,067 $— 
Notes payable(b)
$28 $— $— $28 $37 $— $— $37 
Long-term debt(c)
$25,123 $1,285 $21,204 $1,351 $21,963 $725 $18,283 $1,128 
_______________________________________
(a)Current portion included in Current Assets — Other on DTE Energy's Consolidated Statements of Financial Position. Carrying value includes credit loss reserves on Notes receivable.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Energy's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
The following table presents the carrying amount and fair value of financial instruments for DTE Electric:
December 31, 2025December 31, 2024
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable — Affiliates
$— $— $— $— $42 $— $— $42 
Notes receivable — Other(a)
274 — — 289 2 — — 2 
Short-term borrowings — Other
$652 $— $652 $— $666 $— $666 $— 
Notes payable(b)
$24 $— $— $24 $35 $— $— $35 
Long-term debt(c)
$13,165 $— $12,048 $131 $11,881 $— $10,449 $127 
_______________________________________
(a)Included in Other Assets — Other on DTE Electric's Consolidated Statements of Financial Position.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Electric's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
For further fair value information on financial and derivative instruments, see Note 13 to the Consolidated Financial Statements, "Financial and Other Derivative Instruments."
Nuclear Decommissioning Trust Funds
DTE Electric has a legal obligation to decommission its nuclear power plants following the expiration of its operating licenses. This obligation is reflected as an Asset retirement obligation on DTE Electric's Consolidated Statements of Financial Position. Rates approved by the MPSC provide for the recovery of decommissioning costs of Fermi 2 and the disposal of low-level radioactive waste. See Note 8 to the Consolidated Financial Statements, "Asset Retirement Obligations."
The following table summarizes DTE Electric's fair value of the nuclear decommissioning trust fund assets:
December 31,
20252024
(In millions)
Fermi 2$2,523 $2,234 
Fermi 13 3 
Low-level radioactive waste26 19 
$2,552 $2,256 
The costs of securities sold are determined on the basis of specific identification. The following table sets forth DTE Electric's gains and losses and proceeds from the sale of securities by the nuclear decommissioning trust funds:
Year Ended December 31,
202520242023
(In millions)
Realized gains$50 $47 $36 
Realized losses$(32)$(27)$(42)
Proceeds from sale of securities$717 $555 $681 
Realized gains and losses from the sale of securities and unrealized gains and losses incurred by the Fermi 2 trust are recorded to Regulatory assets and the Nuclear decommissioning liability. Realized gains and losses from the sale of securities and unrealized gains and losses on the low-level radioactive waste funds are recorded to the Nuclear decommissioning liability.
The following table sets forth DTE Electric's fair value and unrealized gains and losses for the nuclear decommissioning trust funds:
December 31, 2025December 31, 2024
Fair
Value		Unrealized
Gains		Unrealized LossesFair
Value		Unrealized
Gains		Unrealized Losses
(In millions)
Equity securities$1,188 $742 $(10)$1,003 $558 $(16)
Fixed income securities726 25 (17)650 16 (29)
Private equity and other358 125 (7)349 106 (8)
Hedge funds and similar investments245 8 (6)228 7 (5)
Cash equivalents35 — — 26 — — 
$2,552 $900 $(40)$2,256 $687 $(58)
The following table summarizes the fair value of the fixed income securities held in nuclear decommissioning trust funds by contractual maturity:
December 31, 2025
(In millions)
Due within one year$20 
Due after one through five years93 
Due after five through ten years127 
Due after ten years353 
$593 
Fixed income securities held in nuclear decommissioning trust funds include $133 million of non-publicly traded commingled funds that do not have a contractual maturity date.
Other Securities
At December 31, 2025 and 2024, DTE Energy's securities included in Other investments on the Consolidated Statements of Financial Position consisted primarily of investments within DTE Energy's rabbi trust. The rabbi trust is comprised primarily of trading securities recorded at fair value, as well as debt securities classified as held-to-maturity and recorded at amortized cost. The trust was established to fund certain non-qualified pension benefits, and therefore changes in market value of the trading securities and interest on the held-to-maturity securities are recognized in earnings. Gains and losses are allocated from DTE Energy to DTE Electric and are included in Other Income or Other Expense, respectively, in the Registrants' Consolidated Statements of Operations. Gains (losses) related to the trading securities were immaterial for the years ended December 31, 2025, 2024, and 2023.