UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________________

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period ended March 31, 2026

Or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____ to _____

Commission File Number: 1-11607

DTE Energy Company

Michigan	38-3217752
(State or other jurisdiction of incorporation or organization)	(I.R.S Employer Identification No.)

Commission File Number: 1-2198

DTE Electric Company

Michigan	38-0478650
(State or other jurisdiction of incorporation or organization)	(I.R.S Employer Identification No.)

Registrants address of principal executive offices: One Energy Plaza, Detroit, Michigan 48226-1221

Registrants telephone number, including area code: (313) 235-4000

Securities registered pursuant to Section 12(b) of the Act:

Registrant	Title of Each Class	Trading Symbol(s)	Name of Exchange on which Registered
DTE Energy Company (DTE Energy)	Common stock, without par value	DTE	New York Stock Exchange
DTE Energy	2017 Series E 5.25% Junior Subordinated Debentures due 2077	DTW	New York Stock Exchange
DTE Energy	2020 Series G 4.375% Junior Subordinated Debentures due 2080	DTB	New York Stock Exchange
DTE Energy	2021 Series E 4.375% Junior Subordinated Debentures due 2081	DTG	New York Stock Exchange
DTE Energy	2025 Series H 6.25% Junior Subordinated Debentures due 2085	DTK	New York Stock Exchange
DTE Electric Company (DTE Electric)	None		None

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

DTE Energy Company (DTE Energy) Yes ☒ No ☐ DTE Electric Company (DTE Electric) Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

DTE Energy Yes ☒ No ☐ DTE Electric Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

DTE Energy	Large accelerated filer	Accelerated filer	Non-accelerated filer	Smaller reporting company	Emerging growth company
	☒	☐	☐	☐	☐
DTE Electric	Large accelerated filer	Accelerated filer	Non-accelerated filer	Smaller reporting company	Emerging growth company
	☐	☐	☒	☐	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

DTE Energy Yes ☐ No ☒ DTE Electric Yes ☐ No ☒

Number of shares of Common Stock outstanding at March 31, 2026:

Registrant	Description	Shares
DTE Energy	Common Stock, without par value	208,028,313
DTE Electric	Common Stock, $10 par value, indirectly-owned by DTE Energy	138,632,324

This combined Form 10-Q is filed separately by two registrants: DTE Energy and DTE Electric. Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. DTE Electric makes no representation as to information relating exclusively to DTE Energy.

DTE Electric, an indirect wholly-owned subsidiary of DTE Energy, meets the conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q and is therefore filing this form with the reduced disclosure format specified in General Instructions H(2) of Form 10-Q.

TABLE OF CONTENTS

		Page
	Definitions	1
	Filing Format	3
	Forward-Looking Statements	3
PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements
	DTE Energy Consolidated Financial Statements (Unaudited)	5
	DTE Electric Consolidated Financial Statements (Unaudited)	11
	Combined Notes to Consolidated Financial Statements (Unaudited)	17
	Note 1 — Organization and Basis of Presentation	17
	Note 2 — Significant Accounting Policies	20
	Note 3 — New Accounting Pronouncements	24
	Note 4 — Revenue	25
	Note 5 — Regulatory Matters	27
	Note 6 — Earnings Per Share	28
	Note 7 — Fair Value	29
	Note 8 — Financial and Other Derivative Instruments	36
	Note 9 — Long-Term Financings	41
	Note 10 — Short-Term Credit Arrangements and Borrowings	41
	Note 11 — Leases	43
	Note 12 — Commitments and Contingencies	43
	Note 13 — Retirement Benefits and Trusteed Assets	48
	Note 14 — Segment and Related Information	49
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	53
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	66
Item 4.	Controls and Procedures	69
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	70
Item 1A.	Risk Factors	70
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	70
Item 5.	Insider Trading Arrangements and Policies	70
Item 6.	Exhibits	71
	Signatures	72

DEFINITIONS

AFUDC	Allowance for Funds Used During Construction
ASU	Accounting Standards Update issued by the FASB
ATM	At-the-market
CAD	Canadian Dollar (C$)
CARB	California Air Resources Board that administers California's Low Carbon Fuel Standard
Carbon emissions	Emissions of carbon containing compounds, including carbon dioxide and methane, that are identified as greenhouse gases
CCR	Coal Combustion Residuals
CFTC	U.S. Commodity Futures Trading Commission
DTE Electric	DTE Electric Company (an indirect wholly-owned subsidiary of DTE Energy) and subsidiary companies
DTE Energy	DTE Energy Company, directly or indirectly the parent of DTE Electric, DTE Gas, and numerous non-utility subsidiaries
DTE Gas	DTE Gas Company (an indirect wholly-owned subsidiary of DTE Energy) and subsidiary companies
DTE Securitization I	DTE Electric Securitization Funding I, LLC, a special purpose entity wholly-owned by DTE Electric. The entity was created to issue securitization bonds for qualified costs related to the River Rouge generation plant and tree trimming surge program and to recover debt service costs from DTE Electric customers
DTE Securitization II	DTE Electric Securitization Funding II, LLC, a special purpose entity wholly-owned by DTE Electric. The entity was created to issue securitization bonds for qualified costs related to the St. Clair and Trenton Channel generation plants and to recover debt service costs from DTE Electric customers
DTE Sustainable Generation	DTE Sustainable Generation Holdings, LLC (an indirect wholly-owned subsidiary of DTE Energy) and subsidiary companies
EGLE	Michigan Department of Environment, Great Lakes, and Energy, formerly known as Michigan Department of Environmental Quality
ELG	Effluent Limitations Guidelines
EPA	U.S. Environmental Protection Agency
EWR	Energy Waste Reduction program, which includes a mechanism authorized by the MPSC allowing DTE Electric and DTE Gas to recover through rates certain costs relating to energy waste reduction
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
FGD	Flue Gas Desulfurization
FOV	Finding of Violation
FTRs	Financial Transmission Rights are financial instruments that entitle the holder to receive payments related to costs incurred for congestion on the transmission grid
GCR	A Gas Cost Recovery mechanism authorized by the MPSC that allows DTE Gas to recover through rates its natural gas costs
GHGs	Greenhouse gases
Interconnection sales	Sales of power by DTE Electric into the energy market through MISO, generally resulting from excess generation compared to customer demand
ITCs	Investment tax credits
MGP	Manufactured Gas Plant

1

DEFINITIONS

MISO	Midcontinent Independent System Operator, Inc.
MPSC	Michigan Public Service Commission
MTM	Mark-to-market
NAAQS	National Ambient Air Quality Standards
NAV	Net Asset Value
Net zero	Goal for DTE Energy's utility operations and gas suppliers at DTE Gas that any carbon emissions put into the atmosphere will be balanced by those taken out of the atmosphere. Achieving this goal will include collective efforts to reduce carbon emissions and actions to offset any remaining emissions. Progress towards net zero goals is estimated and methodologies and calculations may vary from those of other utility businesses with similar targets
Non-utility	An entity that is not a public utility. Its conditions of service, prices of goods and services, and other operating related matters are not directly regulated by the MPSC
NOX	Nitrogen Oxides
NPDES	National Pollutant Discharge Elimination System
NRC	U.S. Nuclear Regulatory Commission
PSCR	A Power Supply Cost Recovery mechanism authorized by the MPSC that allows DTE Electric to recover through rates its fuel, fuel-related, and purchased power costs
PTCs	Production tax credits
REC	Renewable Energy Credit
REF	Reduced Emissions Fuel
Registrants	DTE Energy and DTE Electric
Retail access	Michigan legislation provided customers the option of access to alternative suppliers for electricity and natural gas
RPS	Renewable Portfolio Standard program, which includes a mechanism authorized by the MPSC allowing DTE Electric to recover through rates its renewable energy costs
SIP	State Implementation Plan
SO2	Sulfur Dioxide
SOFR	Secured Overnight Financing Rate
TCJA	Tax Cuts and Jobs Act of 2017, which reduced the corporate Federal income tax rate from 35% to 21%
Topic 606	FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, as amended
VIE	Variable Interest Entity

Units of Measurement
Bcf	Billion cubic feet of natural gas
BTU	British thermal unit, heat value (energy content) of fuel
MMBtu	One million BTU
MWh	Megawatt-hour of electricity

2

FILING FORMAT

This combined Form 10-Q is separately filed by DTE Energy and DTE Electric. Information in this combined Form 10-Q relating to each individual Registrant is filed by such Registrant on its own behalf. DTE Electric makes no representation regarding information relating to any other companies affiliated with DTE Energy other than its own subsidiaries. Neither DTE Energy, nor any of DTE Energy’s other subsidiaries (other than DTE Electric), has any obligation in respect of DTE Electric's debt securities, and holders of such debt securities should not consider the financial resources or results of operations of DTE Energy nor any of DTE Energy’s other subsidiaries (other than DTE Electric and its own subsidiaries (in relevant circumstances)) in making a decision with respect to DTE Electric's debt securities. Similarly, none of DTE Electric nor any other subsidiary of DTE Energy has any obligation in respect to debt securities of DTE Energy. This combined Form 10-Q should be read in its entirety. No one section of this combined Form 10-Q deals with all aspects of the subject matter of this combined Form 10-Q. This combined Form 10-Q should be read in conjunction with the Consolidated Financial Statements and Combined Notes to Consolidated Financial Statements and with Management's Discussion and Analysis included in the combined DTE Energy and DTE Electric 2025 Annual Report on Form 10-K.

FORWARD-LOOKING STATEMENTS

Certain information presented herein includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 with respect to the financial condition, results of operations, and businesses of the Registrants. Words such as "anticipate," "believe," "expect," "may," "could," "projected," "aspiration," "plans," and "goals" signify forward-looking statements. Forward-looking statements are not guarantees of future results and conditions, but rather are subject to numerous assumptions, risks, and uncertainties that may cause actual future results to be materially different from those contemplated, projected, estimated, or budgeted. Many factors may impact forward-looking statements of the Registrants including, but not limited to, the following:

•impact of regulation by the EPA, EGLE, the FERC, the MPSC, the NRC, and for DTE Energy, the CFTC and CARB, as well as other applicable governmental proceedings and regulations, including any associated impact on rate structures;

•the amount and timing of cost recovery allowed as a result of regulatory proceedings, related appeals, or new legislation, including legislative amendments and retail access programs;

•economic conditions and population changes in the Registrants' geographic area resulting in changes in demand, customer conservation, and thefts of electricity and, for DTE Energy, natural gas;

•the operational failure of electric or gas distribution systems or infrastructure;

•impact of volatility in prices in international steel markets and in prices of environmental attributes generated from renewable natural gas investments on the operations of DTE Vantage;

•the risk of a major safety incident;

•environmental issues, laws, regulations, and the increasing costs of remediation and compliance, including actual and potential new federal and state requirements;

•the cost of protecting assets and customer data against, or damage due to, cyber incidents and terrorism;

•health, safety, financial, environmental, and regulatory risks associated with ownership and operation of nuclear facilities;

•volatility in commodity markets, deviations in weather, and related risks impacting the results of DTE Energy's energy trading operations;

•changes in the cost and availability of coal and other raw materials, purchased power, and natural gas;

•advances in technology that produce power, store power, or reduce or increase power consumption;

•changes in the financial condition of significant customers and strategic partners;

•the potential for losses on investments, including nuclear decommissioning trust and benefit plan assets and the related increases in future expense and contributions;

3

•access to capital markets and the results of other financing efforts which can be affected by credit agency ratings;

•instability in capital markets which could impact availability of short and long-term financing;

•impacts of inflation, tariffs, and the timing and extent of changes in interest rates;

•the level of borrowings;

•the potential for increased costs or delays in completion of significant capital projects;

•changes in, and application of, federal, state, and local tax laws and their interpretations, including the Internal Revenue Code, regulations, rulings, court proceedings, and audits;

•the effects of weather and other natural phenomena, including climate change, on operations and sales to customers, and purchases from suppliers;

•unplanned outages at our generation plants;

•employee relations and the impact of collective bargaining agreements;

•the availability, cost, coverage, and terms of insurance and stability of insurance providers;

•cost reduction efforts and the maximization of generation and distribution system performance;

•the effects of competition;

•changes in and application of accounting standards and financial reporting regulations;

•changes in federal or state laws and their interpretation with respect to regulation, energy policy, and other business issues;

•successful execution of new business development and future growth plans;

•contract disputes, binding arbitration, litigation, and related appeals;

•the ability of the electric and gas utilities to achieve goals for carbon emission reductions; and

•the risks discussed in the Registrants' public filings with the Securities and Exchange Commission.

New factors emerge from time to time. The Registrants cannot predict what factors may arise or how such factors may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements speak only as of the date on which such statements are made. The Registrants undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made or to reflect the occurrence of unanticipated events.

Part I — Financial Information

Item 1. Financial Statements

4

DTE Energy Company

Consolidated Statements of Operations (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions, except per share amounts)
Operating Revenues
Utility operations	$	2,623	$	2,307
Non-utility operations	2,518		2,133
	5,141		4,440
Operating Expenses
Fuel, purchased power, and gas — utility	834		695
Fuel, purchased power, gas, and other — non-utility	2,528		1,957
Operation and maintenance	733		575
Depreciation and amortization	483		452
Taxes other than income	149		138
Asset (gains) losses and impairments, net	2		(1)
	4,729		3,816
Operating Income	412		624
Other (Income) and Deductions
Interest expense	293		250
Interest income	(31)		(23)
Other income	(59)		(44)
Other expenses	20		14
	223		197
Income Before Income Taxes	189		427
Income Tax Benefit	(58)		(18)
Net Income Attributable to DTE Energy Company	$	247	$	445
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company	$	1.19	$	2.14
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company	$	1.19	$	2.14
Weighted Average Common Shares Outstanding
Basic	207		207
Diluted	208		207

See Combined Notes to Consolidated Financial Statements (Unaudited)

5

DTE Energy Company

Consolidated Statements of Comprehensive Income (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions)
Net Income	$	247	$	445
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $— for both periods	1		1
Net unrealized gains (losses) on derivatives, net of taxes of $1 and $(1), respectively	3		(3)
Foreign currency translation	(1)		—
Other comprehensive income (loss)	3		(2)
Comprehensive Income Attributable to DTE Energy Company	$	250	$	443

See Combined Notes to Consolidated Financial Statements (Unaudited)

6

DTE Energy Company

Consolidated Statements of Financial Position (Unaudited)

	March 31,		December 31,
	2026		2025
	(In millions)
ASSETS
Current Assets
Cash and cash equivalents	$	238	$	208
Restricted cash	40		42
Accounts receivable (less allowance for doubtful accounts of $68 and $60, respectively)
Customer	1,916		2,031
Other	193		118
Inventories
Fuel and gas	205		381
Materials, supplies, and other	1,026		994
Derivative assets	137		143
Regulatory assets	297		170
Other	340		261
	4,392		4,348
Investments
Nuclear decommissioning trust funds	2,599		2,552
Investments in equity method investees	112		122
Other	193		194
	2,904		2,868
Property
Property, plant, and equipment	45,592		44,623
Accumulated depreciation and amortization	(11,174)		(10,970)
	34,418		33,653
Other Assets
Goodwill	1,993		1,993
Regulatory assets	7,521		7,380
Securitized regulatory assets	601		619
Intangible assets	183		188
Notes receivable	1,494		1,455
Derivative assets	67		89
Prepaid postretirement costs	789		761
Operating lease right-of-use assets	266		271
Other	480		441
	13,394		13,197
Total Assets	$	55,108	$	54,066

See Combined Notes to Consolidated Financial Statements (Unaudited)

7

DTE Energy Company

Consolidated Statements of Financial Position (Unaudited) — (Continued)

	March 31,		December 31,
	2026		2025
	(In millions, except shares)
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	1,628	$	1,753
Accrued interest	337		273
Dividends payable	242		242
Short-term borrowings	—		882
Current portion long-term debt, including securitization bonds and finance leases	1,507		1,356
Derivative liabilities	144		86
Gas inventory equalization	125		—
Regulatory liabilities	56		107
Operating lease liabilities	32		32
Other	539		678
	4,610		5,409
Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other	23,173		21,736
Securitization bonds	545		561
Junior subordinated debentures	1,475		1,474
Finance lease liabilities	11		14
	25,204		23,785
Other Liabilities
Deferred income taxes	3,379		3,400
Regulatory liabilities	2,968		2,881
Asset retirement obligations	4,536		4,469
Unamortized investment tax credit	505		402
Derivative liabilities	61		66
Accrued pension liability	226		235
Accrued postretirement liability	239		247
Nuclear decommissioning	412		405
Operating lease liabilities	229		235
Other	411		224
	12,966		12,564
Commitments and Contingencies (Notes 5 and 12)
Equity
Common stock (No par value, 400,000,000 shares authorized, and 208,028,313 and 207,745,154 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively)	6,872		6,858
Retained earnings	5,487		5,484
Accumulated other comprehensive loss	(36)		(39)
Total DTE Energy Company Equity	12,323		12,303
Noncontrolling interests	5		5
Total Equity	12,328		12,308
Total Liabilities and Equity	$	55,108	$	54,066

See Combined Notes to Consolidated Financial Statements (Unaudited)

8

DTE Energy Company

Consolidated Statements of Cash Flows (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Activities
Net Income	$	247	$	445
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	483		452
Nuclear fuel amortization	13		17
Allowance for equity funds used during construction	(35)		(24)
Deferred income taxes	(53)		(19)
Equity (earnings) of equity method investees	(3)		(7)
Dividends from equity method investees	—		1
Asset (gains) losses and impairments, net	2		(1)
Changes in assets and liabilities:
Accounts receivable, net	33		(61)
Inventories	144		90
Prepaid postretirement benefit costs	(28)		(27)
Accounts payable	(144)		(2)
Gas inventory equalization	125		121
Accrued pension liability	(9)		(10)
Accrued postretirement liability	(8)		(7)
Derivative assets and liabilities	81		54
Regulatory assets and liabilities	14		78
Other current and noncurrent assets and liabilities	44		(80)
Net cash from operating activities	906		1,020
Investing Activities
Plant and equipment expenditures — utility	(1,214)		(857)
Plant and equipment expenditures — non-utility	(15)		(16)
Proceeds from sale of nuclear decommissioning trust fund assets	213		139
Investment in nuclear decommissioning trust funds	(215)		(142)
Distributions from equity method investees	2		3
Investment in notes receivable	(66)		(87)
Principal collections on notes receivable	8		5
Other	(27)		(13)
Net cash used for investing activities	(1,314)		(968)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	1,582		1,093
Redemption of long-term debt	(16)		(365)
Short-term borrowings, net	(882)		(554)
Dividends paid on common stock	(233)		(217)
Other	(15)		(7)
Net cash from (used for) financing activities	436		(50)
Net Increase in Cash, Cash Equivalents, and Restricted Cash	28		2
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	250		88
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	278	$	90
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$	589	$	375

See Combined Notes to Consolidated Financial Statements (Unaudited)

9

DTE Energy Company

Consolidated Statements of Changes in Equity (Unaudited)

				Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Noncontrolling Interests
	Common Stock
	Shares	Amount								Total
	(Dollars in millions, shares in thousands)
Balance, December 31, 2025	207,745	$	6,858	$	5,484	$	(39)	$	5	$	12,308
Net Income	—	—		247		—		—		247
Dividends declared on common stock ($1.17 per Common Share)	—	—		(242)		—		—		(242)
Issuance of common stock	66	9		—		—		—		9
Other comprehensive income, net of tax	—	—		—		3				3
Stock-based compensation and other	217	5		(2)		—		—		3
Balance, March 31, 2026	208,028	$	6,872	$	5,487	$	(36)	$	5	$	12,328

				Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests
	Common Stock
	Shares	Amount								Total
	(Dollars in millions, shares in thousands)
Balance, December 31, 2024	207,172	$	6,779	$	4,946	$	(26)	$	5	$	11,704
Net Income	—	—		445		—		—		445
Dividends declared on common stock ($1.09 per Common Share)	—	—		(226)		—		—		(226)
Issuance of common stock	73	9		—		—		—		9
Other comprehensive loss, net of tax	—	—		—		(2)		—		(2)
Stock-based compensation and other	271	(2)		(2)		—		1		(3)
Balance, March 31, 2025	207,516	$	6,786	$	5,163	$	(28)	$	6	$	11,927

See Combined Notes to Consolidated Financial Statements (Unaudited)

10

DTE Electric Company

Consolidated Statements of Operations (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Revenues — Utility operations	$	1,717	$	1,454
Operating Expenses
Fuel and purchased power — utility	513		415
Operation and maintenance	396		343
Depreciation and amortization	400		378
Taxes other than income	103		94
Asset (gains) losses and impairments, net	2		—
	1,414		1,230
Operating Income	303		224
Other (Income) and Deductions
Interest expense	145		132
Interest income	(3)		(1)
Non-operating retirement benefits, net	(1)		(1)
Other income	(54)		(36)
Other expenses	18		12
	105		106
Income Before Income Taxes	198		118
Income Tax Benefit	(17)		(3)
Net Income	$	215	$	121

See Combined Notes to Consolidated Financial Statements (Unaudited)

11

DTE Electric Company

Consolidated Statements of Comprehensive Income (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions)
Net Income	$	215	$	121
Other comprehensive income	—		—
Comprehensive Income	$	215	$	121

See Combined Notes to Consolidated Financial Statements (Unaudited)

12

DTE Electric Company

Consolidated Statements of Financial Position (Unaudited)

	March 31,		December 31,
	2026		2025
	(In millions)
ASSETS
Current Assets
Cash and cash equivalents	$	80	$	81
Restricted cash	40		42
Accounts receivable (less allowance for doubtful accounts of $41 for both periods)
Customer	884		805
Affiliates	2		2
Other	96		55
Inventories
Fuel	111		114
Materials and supplies	667		678
Notes receivable
Affiliates	228		—
Other	16		—
Regulatory assets	246		158
Other	169		116
	2,539		2,051
Investments
Nuclear decommissioning trust funds	2,599		2,552
Other	72		72
	2,671		2,624
Property
Property, plant, and equipment	34,653		33,807
Accumulated depreciation and amortization	(8,399)		(8,239)
	26,254		25,568
Other Assets
Regulatory assets	6,974		6,821
Securitized regulatory assets	601		619
Prepaid postretirement costs — affiliates	479		463
Operating lease right-of-use assets	232		237
Other	604		607
	8,890		8,747
Total Assets	$	40,354	$	38,990

See Combined Notes to Consolidated Financial Statements (Unaudited)

13

DTE Electric Company

Consolidated Statements of Financial Position (Unaudited) — (Continued)

	March 31,		December 31,
	2026		2025
	(In millions, except shares)
LIABILITIES AND SHAREHOLDER’S EQUITY
Current Liabilities
Accounts payable
Affiliates	$	120	$	71
Other	942		839
Accrued interest	165		135
Current portion long-term debt, including securitization bonds and finance leases	755		754
Regulatory liabilities	50		63
Short-term borrowings
Other	—		652
Operating lease liabilities	28		27
Other	214		228
	2,274		2,769
Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other	13,436		11,852
Securitization bonds	545		561
Finance lease liabilities	3		6
	13,984		12,419
Other Liabilities
Deferred income taxes	3,813		3,812
Regulatory liabilities	1,876		1,798
Asset retirement obligations	4,281		4,217
Unamortized investment tax credit	505		402
Nuclear decommissioning	412		405
Accrued pension liability — affiliates	242		245
Accrued postretirement liability — affiliates	229		237
Operating lease liabilities	201		206
Other	143		66
	11,702		11,388
Commitments and Contingencies (Notes 5 and 12)
Shareholder’s Equity
Common stock ($10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding for both periods)	8,949		8,949
Retained earnings	3,445		3,465
Total Shareholder’s Equity	12,394		12,414
Total Liabilities and Shareholder’s Equity	$	40,354	$	38,990

See Combined Notes to Consolidated Financial Statements (Unaudited)

14

DTE Electric Company

Consolidated Statements of Cash Flows (Unaudited)

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Activities
Net Income	$	215	$	121
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	400		378
Nuclear fuel amortization	13		17
Allowance for equity funds used during construction	(34)		(24)
Deferred income taxes	(26)		(19)
Asset (gains) losses and impairments, net	2		—
Changes in assets and liabilities:
Accounts receivable, net	(127)		(19)
Inventories	14		25
Accounts payable	111		14
Prepaid postretirement benefit costs — affiliates	(16)		(14)
Accrued pension liability — affiliates	(3)		(4)
Accrued postretirement liability — affiliates	(8)		(7)
Regulatory assets and liabilities	65		88
Other current and noncurrent assets and liabilities	24		(45)
Net cash from operating activities	630		511
Investing Activities
Plant and equipment expenditures	(1,049)		(732)
Proceeds from sale of nuclear decommissioning trust fund assets	213		139
Investment in nuclear decommissioning trust funds	(215)		(142)
Investment in notes receivable	(14)		(33)
Notes receivable to (from) affiliates	(228)		42
Other	(7)		(13)
Net cash used for investing activities	(1,300)		(739)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	1,582		—
Redemption of long-term debt	(16)		(365)
Short-term borrowings, net — affiliates	—		960
Short-term borrowings, net — other	(652)		(153)
Dividends paid on common stock	(235)		(211)
Other	(12)		(11)
Net cash from financing activities	667		220
Net Decrease in Cash, Cash Equivalents, and Restricted Cash	(3)		(8)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	123		59
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	120	$	51
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$	525	$	300

See Combined Notes to Consolidated Financial Statements (Unaudited)

15

DTE Electric Company

Consolidated Statements of Changes in Shareholder's Equity (Unaudited)

				Additional Paid-in Capital		Retained Earnings
	Common Stock
	Shares	Amount						Total
	(Dollars in millions, shares in thousands)
Balance, December 31, 2025	138,632	$	1,386	$	7,563	$	3,465	$	12,414
Net Income	—	—		—		215		215
Dividends declared on common stock	—	—		—		(235)		(235)
Balance, March 31, 2026	138,632	$	1,386	$	7,563	$	3,445	$	12,394

				Additional Paid-in Capital		Retained Earnings
	Common Stock
	Shares	Amount						Total
	(Dollars in millions, shares in thousands)
Balance, December 31, 2024	138,632	$	1,386	$	6,609	$	3,159	$	11,154
Net Income	—	—		—		121		121
Dividends declared on common stock	—	—		—		(211)		(211)
Balance, March 31, 2025	138,632	$	1,386	$	6,609	$	3,069	$	11,064

See Combined Notes to Consolidated Financial Statements (Unaudited)

16

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited)

Index of Combined Notes to Consolidated Financial Statements (Unaudited)

The Combined Notes to Consolidated Financial Statements (Unaudited) are a combined presentation for DTE Energy and DTE Electric. The following list indicates the Registrant(s) to which each note applies:

Note 1	Organization and Basis of Presentation	DTE Energy and DTE Electric
Note 2	Significant Accounting Policies	DTE Energy and DTE Electric
Note 3	New Accounting Pronouncements	DTE Energy and DTE Electric
Note 4	Revenue	DTE Energy and DTE Electric
Note 5	Regulatory Matters	DTE Energy and DTE Electric
Note 6	Earnings per Share	DTE Energy
Note 7	Fair Value	DTE Energy and DTE Electric
Note 8	Financial and Other Derivative Instruments	DTE Energy and DTE Electric
Note 9	Long-Term Financings	DTE Energy and DTE Electric
Note 10	Short-Term Credit Arrangements and Borrowings	DTE Energy and DTE Electric
Note 11	Leases	DTE Energy
Note 12	Commitments and Contingencies	DTE Energy and DTE Electric
Note 13	Retirement Benefits and Trusteed Assets	DTE Energy and DTE Electric
Note 14	Segment and Related Information	DTE Energy and DTE Electric

NOTE 1 — ORGANIZATION AND BASIS OF PRESENTATION

Corporate Structure

DTE Energy owns the following businesses:

•DTE Electric is a public utility engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.3 million customers in southeastern Michigan

•DTE Gas is a public utility engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.4 million customers throughout Michigan and the sale of storage and transportation capacity

•Other businesses include 1) DTE Vantage, which is primarily involved in renewable natural gas projects and providing custom energy solutions to industrial, commercial, and institutional customers, and 2) energy marketing and trading operations

DTE Electric and DTE Gas are regulated by the MPSC. Certain activities of DTE Electric and DTE Gas, as well as various other aspects of businesses under DTE Energy, are regulated by the FERC. In addition, the Registrants are regulated by other federal and state regulatory agencies including the NRC, the EPA, EGLE, and for DTE Energy, the CFTC and CARB.

Basis of Presentation

The Consolidated Financial Statements should be read in conjunction with the Combined Notes to Consolidated Financial Statements included in the combined DTE Energy and DTE Electric 2025 Annual Report on Form 10-K.

The accompanying Consolidated Financial Statements of the Registrants are prepared using accounting principles generally accepted in the United States of America. These accounting principles require management to use estimates and assumptions that impact reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from the Registrants' estimates.

The Consolidated Financial Statements are unaudited but, in the Registrants' opinions, include all adjustments necessary to present a fair statement of the results for the interim periods. All adjustments are of a normal recurring nature, except as otherwise disclosed in these Consolidated Financial Statements and Combined Notes to Consolidated Financial Statements. Financial results for this interim period are not necessarily indicative of results that may be expected for any other interim period or for the fiscal year ending December 31, 2026.

17

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The information in these combined notes relates to each of the Registrants as noted in the Index of Combined Notes to Consolidated Financial Statements. However, DTE Electric does not make any representation as to information related solely to DTE Energy or the subsidiaries of DTE Energy other than itself.

Certain prior year balances for the Registrants were reclassified to match the current year's Consolidated Financial Statements presentation.

Principles of Consolidation

The Registrants consolidate all majority-owned subsidiaries and investments in entities in which they have controlling influence. Non-majority owned investments are accounted for using the equity method when the Registrants are able to significantly influence the operating policies of the investee. When the Registrants do not influence the operating policies of an investee, the equity investment is valued at cost minus any impairments, if applicable. These Consolidated Financial Statements also reflect the Registrants' proportionate interests in certain jointly-owned utility plants. The Registrants eliminate all intercompany balances and transactions.

The Registrants evaluate whether an entity is a VIE whenever reconsideration events occur. The Registrants consolidate VIEs for which they are the primary beneficiary. If a Registrant is not the primary beneficiary and an ownership interest is held, the VIE is accounted for under the equity method of accounting. When assessing the determination of the primary beneficiary, a Registrant considers all relevant facts and circumstances, including: the power, through voting or similar rights, to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the expected losses and/or the right to receive the expected returns of the VIE. The Registrants perform ongoing reassessments of all VIEs to determine if the primary beneficiary status has changed.

Legal entities within the DTE Vantage segment enter into long-term contractual arrangements with customers to supply energy-related products or services. The entities are generally designed to pass-through the commodity risk associated with these contracts to the customers, with DTE Energy retaining operational and customer default risk. These entities generally are VIEs and consolidated when DTE Energy is the primary beneficiary. In addition, DTE Energy has interests in certain VIEs through which control of all significant activities is shared with partners, and therefore are generally accounted for under the equity method.

The Registrants hold ownership interests in certain limited partnerships. The limited partnerships include investment funds which support regional development and economic growth, and an operational business providing energy-related products. These entities are generally VIEs as a result of certain characteristics of the limited partnership voting rights. The ownership interests are accounted for under the equity method as the Registrants are not the primary beneficiaries.

DTE Energy has variable interests in VIEs through certain of its long-term purchase and sale contracts. DTE Electric has variable interests in VIEs through certain of its long-term purchase contracts. As of March 31, 2026, the carrying amount of assets and liabilities in DTE Energy's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase and sale contracts are predominantly related to working capital accounts and generally represent the amounts owed by or to DTE Energy for the deliveries associated with the current billing cycle under the contracts. As of March 31, 2026, the carrying amount of assets and liabilities in DTE Electric's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase contracts are predominantly related to working capital accounts and generally represent the amounts owed by DTE Electric for the deliveries associated with the current billing cycle under the contracts. The Registrants have not provided any significant form of financial support associated with these long-term contracts. There is no material potential exposure to loss as a result of DTE Energy's variable interests through these long-term purchase and sale contracts. In addition, there is no material potential exposure to loss as a result of DTE Electric's variable interests through these long-term purchase contracts.

DTE Electric previously financed regulatory assets for deferred costs related to certain retired generation plants and its tree trimming surge program through the sale of bonds by wholly-owned special purpose entities, DTE Securitization I and DTE Securitization II (collectively "the DTE Securitization entities"). The DTE Securitization entities are VIEs. DTE Electric has the power to direct the most significant activities of these entities, including performing servicing activities such as billing and collecting surcharge revenue. Accordingly, DTE Electric is the primary beneficiary and the DTE Securitization entities are consolidated by the Registrants. Securitization bond holders have no recourse to the Registrants' assets, except for those held by the DTE Securitization entities. Surcharges collected by DTE Electric to pay for bond servicing and other qualified costs reflect securitization property solely owned by the DTE Securitization entities. These surcharges are remitted to a trustee and are not available to other creditors of the Registrants.

18

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The maximum risk exposure for consolidated VIEs is reflected on the Registrants' Consolidated Statements of Financial Position. For non-consolidated VIEs, the maximum risk exposure of the Registrants is generally limited to their investment and notes receivable.

The table below summarizes the major Consolidated Statements of Financial Position items for consolidated VIEs as of March 31, 2026 and December 31, 2025. All assets and liabilities of a consolidated VIE are presented where it has been determined that a consolidated VIE has either (1) assets that can be used only to settle obligations of the VIE or (2) liabilities for which creditors do not have recourse to the general credit of the primary beneficiary. Assets and liabilities of the DTE Securitization entities have been aggregated due to their similar nature and are separately stated in the table below, comprising the entirety of the DTE Electric amounts. For all other VIEs, assets and liabilities are also aggregated due to their similar nature and presented together with the DTE Securitization entities in the DTE Energy amounts below. VIEs, in which DTE Energy holds a majority voting interest and is the primary beneficiary, that meet the definition of a business and whose assets can be used for purposes other than the settlement of the VIE's obligations have been excluded from the table.

Amounts for the Registrants' consolidated VIEs are as follows:

	March 31, 2026				December 31, 2025
	DTE Energy		DTE Electric		DTE Energy		DTE Electric
	(In millions)
ASSETS
Cash and cash equivalents	$	7	$	—	$	5	$	—
Restricted cash	40		40		42		42
Accounts receivable	10		4		10		6
Securitized regulatory assets	601		601		619		619
Notes receivable(a)	66		—		68		—
Other current and long-term assets	—		—		1		—
	$	724	$	645	$	745	$	667
LIABILITIES
Accrued interest	$	4	$	4	$	11	$	11
Regulatory liabilities — current	24		24		23		23
Securitization bonds(b)	620		620		636		636
Other current and long-term liabilities	4		—		4		—
	$	652	$	648	$	674	$	670

_______________________________________

(a)At both March 31, 2026 and December 31, 2025, Notes receivable includes $2 million, reported in Current Assets — Other on DTE Energy's Consolidated Statements of Financial Position.

(b)Includes $75 million reported in Current portion of long-term debt on the Registrants' Consolidated Statements of Financial Position for both the periods ended March 31, 2026 and December 31, 2025.

DTE Energy has Investments in equity method investees relating to non-consolidated VIEs of $52 million and $63 million at March 31, 2026 and December 31, 2025, respectively.

19

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 2 — SIGNIFICANT ACCOUNTING POLICIES

Other Income

The following is a summary of DTE Energy's Other income:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Allowance for equity funds used during construction	$	35	$	24
Contract services	17		9
Equity earnings of equity method investees	3		7
Investment income(a)	1		1
Other	3		3
	$	59	$	44

_______________________________________

(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.

The following is a summary of DTE Electric's Other income:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Allowance for equity funds used during construction	$	34	$	24
Contract services	16		9
Investment income(a)	1		1
Other	3		2
	$	54	$	36

_______________________________________

(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.

For information on equity earnings of equity method investees by segment, see Note 14 to the Consolidated Financial Statements, "Segment and Related Information."

Changes in Accumulated Other Comprehensive Income (Loss)

Comprehensive income (loss) is the change in common shareholders' equity during a period from transactions and events from non-owner sources, including Net Income. The amounts recorded to Accumulated other comprehensive income (loss) for DTE Energy include changes in benefit obligations, consisting of deferred actuarial losses and prior service costs, unrealized gains and losses from derivatives accounted for as cash flow hedges, and foreign currency translation adjustments, if any. DTE Energy releases income tax effects from accumulated other comprehensive income when the circumstances upon which they are premised cease to exist.

Changes in Accumulated other comprehensive income (loss) are presented in DTE Energy's Consolidated Statements of Changes in Equity and DTE Electric's Consolidated Statements of Changes in Shareholder's Equity, if any. For the three months ended March 31, 2026 and 2025, reclassifications out of Accumulated other comprehensive income (loss) were not material.

20

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Income Taxes

Tax rates are affected by estimated annual permanent items, production and investment tax credits, regulatory adjustments, and discrete items that may occur in any given period, but are not consistent from period to period. The tables below summarize how the Registrants' effective income tax rates have varied from the statutory federal income tax rate:

	Three Months Ended March 31,
	2026		2025
DTE Energy
Statutory federal income tax rate	21.0	%	21.0	%
Increase (decrease) due to:
State and local income taxes, net of federal benefit	6.6		4.2
Investment tax credits	(35.4)		(13.1)
Production tax credits	(21.3)		(10.5)
TCJA regulatory liability amortization	(7.4)		(4.5)
AFUDC equity	(3.9)		(1.5)
Nondeductible EES Coke penalty(a)	9.8		—
Other	(0.3)		0.2
Effective income tax rate	(30.9)	%	(4.2)	%

_______________________________________

(a)For further discussion of the EES Coke legal matter, see Note 12 to the Consolidated Financial Statements, "Commitments and Contingencies."

	Three Months Ended March 31,
	2026		2025
DTE Electric
Statutory federal income tax rate	21.0	%	21.0	%
Increase (decrease) due to:
State and local income taxes, net of federal benefit	5.6		5.7
Investment tax credits	(21.5)		(16.6)
Production tax credits	(6.4)		(7.0)
TCJA regulatory liability amortization	(4.2)		(4.6)
AFUDC equity	(2.6)		(1.8)
Other	(0.4)		0.4
Effective income tax rate	(8.5)	%	(2.9)	%

DTE Electric had state income tax receivables with DTE Energy of $1 million at March 31, 2026. Income tax receivables with DTE Energy are included in Accounts receivable — Affiliates on the DTE Electric Consolidated Statements of Financial Position. DTE Electric had federal income tax payables with DTE Energy of $12 million and $1 million at March 31, 2026 and December 31, 2025, respectively. Income tax payables with DTE Energy are included in Accounts payable — Affiliates on the DTE Electric Consolidated Statements of Financial Position.

Unrecognized Compensation Costs

As of March 31, 2026, DTE Energy had $111 million of total unrecognized compensation cost related to non-vested stock incentive plan arrangements. That cost is expected to be recognized over a weighted-average period of 2.1 years.

Allocated Stock-Based Compensation

DTE Electric received an allocation of costs from DTE Energy associated with stock-based compensation of $13 million and $10 million for the three months ended March 31, 2026 and 2025, respectively.

21

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents include cash on hand, cash in banks, and temporary investments purchased with maturities of three months or less. Restricted cash includes funds held in separate bank accounts and principally consists of amounts at DTE Securitization I and DTE Securitization II to pay for debt service and other qualified costs. Restricted cash designated for payments within one year is classified as a Current Asset.

Financing Receivables

Financing receivables are primarily composed of trade receivables, notes receivable, and unbilled revenue. The Registrants' financing receivables are stated at net realizable value.

The Registrants monitor the credit quality of their financing receivables on a regular basis by reviewing credit quality indicators and monitoring for trigger events, such as a credit rating downgrade or bankruptcy. Credit quality indicators include, but are not limited to, ratings by credit agencies where available, collection history, collateral, counterparty financial statements and other internal metrics. Utilizing such data, the Registrants have determined three internal grades of credit quality. Internal grade 1 includes financing receivables for counterparties where credit rating agencies have ranked the counterparty as investment grade. To the extent credit ratings are not available, the Registrants utilize other credit quality indicators to determine the level of risk associated with the financing receivable. Internal grade 1 may include financing receivables for counterparties for which credit rating agencies have ranked the counterparty as below investment grade; however, due to favorable information on other credit quality indicators, the Registrants have determined the risk level to be similar to that of an investment grade counterparty. Internal grade 2 includes financing receivables for counterparties with limited credit information and those with a higher risk profile based upon credit quality indicators. Internal grade 3 reflects financing receivables for which the counterparties have the greatest level of risk, including those in bankruptcy status.

The following represents the Registrants' financing receivables by year of origination as determined by the date the original agreement was executed, classified by internal grade of credit risk, including current year-to-date gross write-offs, if any. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through March 31, 2026.

	DTE Energy
	Year of Origination
	2026		2025		2024 and Prior		Total
	(In millions)
Notes receivable
Internal grade 1	$	14	$	247	$	30	$	291
Internal grade 2	1		11		1,212		1,224
Total notes receivable(a)	$	15	$	258	$	1,242	$	1,515
Net investment in leases
Internal grade 1	$	—	$	—	$	34	$	34
Internal grade 2	—		—		1		1
Total net investment in leases(a)	$	—	$	—	$	35	$	35

_______________________________________

(a)The current portion is included in Current Assets — Other on DTE Energy's Consolidated Statements of Financial Position.

	DTE Electric
	Year of Origination
	2026		2025		2024 and Prior		Total
	(In millions)
Note receivable — Internal grade 1(a)	$	243	$	247	$	27	$	517

_______________________________________

(a)The noncurrent portion is included in Other Assets — Other on DTE Electric's Consolidated Statements of Financial Position.

22

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The allowance for doubtful accounts on accounts receivable for the utility entities is generally calculated using an aging approach that utilizes rates developed in reserve studies. DTE Electric and DTE Gas establish an allowance for uncollectible accounts based on historical losses and management's assessment of existing and future economic conditions, customer trends and other factors. Customer accounts are generally considered delinquent if the amount billed is not received by the due date, which is typically in 21 days, however, factors such as assistance programs may delay aggressive action. DTE Electric and DTE Gas generally assess late payment fees on trade receivables based on past-due terms with customers. Customer accounts are written off when collection efforts have been exhausted. The time period for write-off is 150 days after service has been terminated.

The customer allowance for doubtful accounts for non-utility businesses and other receivables for both utility and non-utility businesses is generally calculated based on specific review of probable future collections based on receivable balances generally in excess of 30 days. Existing and future economic conditions, customer trends and other factors are also considered. Receivables are written off on a specific identification basis and determined based upon the specific circumstances of the associated receivable.

Notes receivable for DTE Energy are primarily comprised of loans, MISO deposits, and finance lease receivables that are included in Notes Receivable and Other current assets on DTE Energy's Consolidated Statements of Financial Position. Notes receivable for DTE Electric are primarily comprised of MISO deposits and loans that are included in current Notes receivable and Other long-term assets on DTE Electric's Consolidated Statements of Financial Position.

The Registrants establish an allowance for credit loss for principal and interest amounts due that are estimated to be uncollectible in accordance with the contractual terms of the note receivable. In determining the allowance for credit losses for notes receivable, the Registrants consider the historical payment experience and other factors that are expected to have a specific impact on the counterparty's ability to pay including existing and future economic conditions. Notes receivable are typically considered delinquent when payment is not received for periods ranging from 60 to 120 days. If amounts are no longer probable of collection, the Registrants may consider the note receivable impaired, adjust the allowance, and cease accruing interest (nonaccrual status).

Cash payments received on nonaccrual status notes receivable, that do not bring the account contractually current, are first applied to the contractually owed past due interest, with any remainder applied to principal. Accrual of interest is generally resumed when the note receivable becomes contractually current.

The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:

	DTE Energy						DTE Electric
	Trade accounts receivable		Other receivables(a)		Total		Trade and other accounts receivable
	(In millions)
Beginning reserve balance, January 1, 2026	$	59	$	3	$	62	$	41
Current period provision	27		—		27		14
Write-offs charged against allowance	(29)		—		(29)		(20)
Recoveries of amounts previously written off	10		—		10		6
Ending reserve balance, March 31, 2026	$	67	$	3	$	70	$	41

_______________________________________

(a)Other receivables includes reserves on notes receivable and Accounts receivable — Other.

	DTE Energy						DTE Electric
	Trade accounts receivable		Other receivables(a)		Total		Trade and other accounts receivable
	(In millions)
Beginning reserve balance, January 1, 2025	$	69	$	3	$	72	$	46
Current period provision	69		—		69		44
Write-offs charged against allowance	(116)		—		(116)		(74)
Recoveries of amounts previously written off	37		—		37		25
Ending reserve balance, December 31, 2025	$	59	$	3	$	62	$	41

_______________________________________

(a)Other receivables includes reserves on notes receivable and Accounts receivable — Other.

23

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:

	Three Months Ended March 31,
	2026		2025
	(In millions)
DTE Energy	$	27	$	26
DTE Electric	$	13	$	10

There are no material amounts of past due financing receivables for the Registrants as of March 31, 2026.

NOTE 3 — NEW ACCOUNTING PRONOUNCEMENTS

Recently Adopted Pronouncements

In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which provides a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets arising from transactions accounted for under ASC 606. The Registrants adopted the ASU effective January 1, 2026 on a prospective basis and elected not to apply the practical expedient, with no impact on the Registrants' financial position or results of operations.

Recently Issued Pronouncements

In November 2024, the FASB issued ASU No. 2024-03, Income Statement-Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, as amended. The amendments in this update require disaggregated disclosure of income statement expense captions into specified categories in disclosures within the footnotes to the financial statements. The ASU is effective for the Registrants for annual reporting periods beginning after December 15, 2026, and for interim reporting periods beginning after December 15, 2027. The guidance may be applied on a prospective or retrospective basis. Early adoption is permitted. The Registrants will apply the guidance upon the effective date.

In September 2025, the FASB issued ASU No. 2025-06, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this update modernize the accounting guidance for the costs to develop software for internal use. The amendments remove all references to a sequential software development method (referred to as "project stages") throughout ASC 350-40 and clarifies the threshold entities should apply to begin capitalizing eligible costs. The ASU is effective for the Registrants for annual and interim periods beginning after December 15, 2027. The guidance may be applied on a prospective, retrospective, or modified transition basis. Early adoption is permitted. The Registrants are currently assessing the impact of this standard on their Consolidated Financial Statements.

24

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 4 — REVENUE

Disaggregation of Revenue

The following is a summary of revenues disaggregated by segment for DTE Energy:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Electric(a)
Residential	$	780	$	720
Commercial	572		529
Industrial	167		160
Other(b)	225		50
Total Electric operating revenues	$	1,744	$	1,459
Gas
Gas sales	$	695	$	692
End User Transportation	91		91
Intermediate Transportation	39		31
Other(b)	107		62
Total Gas operating revenues	$	932	$	876
Other segment operating revenues
DTE Vantage	$	227	$	188
Energy Trading	$	2,351	$	2,026

_______________________________________

(a)Revenues generally represent those of DTE Electric, except $27 million and $5 million of Other revenues related to DTE Sustainable Generation for the three months ended March 31, 2026 and 2025, respectively.

(b)Includes revenue adjustments related to various regulatory mechanisms, including the PSCR at the Electric segment and GCR at the Gas segment, and interconnection sales in the Electric segment. Revenues related to these mechanisms may vary based on changes in the cost of fuel, purchased power, and gas.

Revenues included the following which were outside the scope of Topic 606:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Electric — Alternative Revenue Programs	$	1	$	1
Electric — Other revenues	$	12	$	5
Gas — Other revenues	$	4	$	3
DTE Vantage — Leases	$	12	$	15
Energy Trading — Derivatives	$	1,612	$	1,499

Deferred Revenue

The following is a summary of deferred revenue activity for DTE Energy:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Beginning Balance, January 1	$	170	$	138
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period	63		51
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(68)		(43)
Ending Balance, March 31	$	165	$	146

25

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Deferred revenues are included in Current Liabilities — Other and Other Liabilities — Other on DTE Energy's Consolidated Statements of Financial Position. Deferred revenues generally represent amounts paid by or receivables from customers for which the associated performance obligation has not yet been satisfied. Deferred revenues include amounts associated with REC performance obligations under certain wholesale full requirements power contracts. Deferred revenues related to RECs are recognized as revenue when control of the RECs has transferred. Other performance obligations associated with deferred revenues include providing products and services related to customer prepayments. Deferred revenues associated with these products and services are recognized when control has transferred to the customer.

The following table represents deferred revenue amounts for DTE Energy that are expected to be recognized as revenue in future periods:

	DTE Energy
	(In millions)
2026	$	145
2027	20
2028	—
2029	—
2030	—
2031 and thereafter	—
	$	165

Transaction Price Allocated to the Remaining Performance Obligations

In accordance with optional exemptions available under Topic 606, the Registrants did not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less, (2) with the exception of fixed consideration, contracts for which revenue is recognized at the amount to which the Registrants have the right to invoice for goods provided and services performed, and (3) contracts for which variable consideration relates entirely to an unsatisfied performance obligation.

Such contracts consist of varying types of performance obligations across the segments, including the supply and delivery of energy related products and services. Contracts with variable volumes and/or variable pricing, including those with pricing provisions tied to a consumer price or other index, have also been excluded as the related consideration under the contract is variable at inception of the contract. Contract lengths vary from cancellable to multi-year.

The Registrants expect to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:

	DTE Energy		DTE Electric
	(In millions)
2026	$	150	$	11
2027	193		1
2028	137		—
2029	108		—
2030	91		—
2031 and thereafter	312		—
	$	991	$	12

26

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 5 — REGULATORY MATTERS

2025 Electric Rate Case Filing

DTE Electric filed a rate case with the MPSC on April 24, 2025 requesting an increase in base rates of $574 million based on a projected twelve-month period ending December 31, 2026, and an increase in return on equity from 9.9% to 10.75%. The requested increase in base rates was primarily due to capital investments required to support continued reliability improvements and the ongoing transition to cleaner energy. On February 19, 2026, the MPSC issued an order approving an annual revenue increase of $242 million for services rendered on or after March 5, 2026 and a return on equity of 9.9%.

2025 Electric Depreciation Case Filing

DTE Electric filed a depreciation case with the MPSC on December 23, 2025 requesting an increase in depreciation rates of $147 million when compared to current depreciation rates for plant in service balances as of December 31, 2023. While there is no required timing for an MPSC order in a depreciation case, updated depreciation rates will be implemented coinciding with an order in the first DTE Electric general rate case filed following an order in this case.

2025 Gas Rate Case Filing

DTE Gas filed a rate case with the MPSC on November 13, 2025 requesting a net increase in base rates of $163 million based on a projected twelve-month period ending September 30, 2027, and an increase in return on equity from 9.8% to 10.25%. The net increase is based on a total revenue deficiency of $238 million, net of the IRM roll-in of $75 million. The requested net increase in base rates was primarily due to continued infrastructure investment and increasing operations and maintenance costs needed to ensure the continued safe and reliable delivery of natural gas to customers. A final MPSC order in this case is expected in September 2026.

2026 Electric Rate Case Filing

DTE Electric filed a rate case with the MPSC on April 28, 2026 requesting an increase in base rates of $474 million based on a projected twelve-month period ending February 29, 2028, and an increase in return on equity from 9.9% to 10.25%. The requested increase in base rates was primarily due to capital investments required to support continued reliability improvements and the ongoing transition to cleaner energy. A final MPSC order in this case is expected in February 2027.

27

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 6 — EARNINGS PER SHARE

Basic earnings per share is calculated by dividing net income, adjusted for income allocated to participating securities, by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflect the dilution that would occur if any potentially dilutive instruments were exercised or converted into common shares. DTE Energy’s participating securities are restricted shares under the stock incentive program that contain rights to receive non-forfeitable dividends. Performance shares do not receive cash dividends; as such, these awards are not considered participating securities.

The following is a reconciliation of DTE Energy's basic and diluted income per share calculation:

	Three Months Ended March 31,
	2026		2025
	(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company	$	247	$	445
Less: Allocation of earnings to net restricted stock awards	—		1
Net income available to common shareholders — basic	$	247	$	444
Average number of common shares outstanding — basic	207		207
Basic Earnings per Common Share	$	1.19	$	2.14
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company	$	247	$	445
Less: Allocation of earnings to net restricted stock awards	—		1
Net income available to common shareholders — diluted	$	247	$	444
Average number of common shares outstanding — basic	207		207
Average performance share awards and ATM dilutive shares	1		—
Average number of common shares outstanding — diluted	208		207
Diluted Earnings per Common Share	$	1.19	$	2.14

28

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 7 — 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 March 31, 2026 and December 31, 2025. 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:

29

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

	March 31, 2026												December 31, 2025
	Level 1		Level 2		Level 3		Other(a)		Netting(b)		Net Balance		Level 1		Level 2		Level 3		Other(a)		Netting(b)		Net Balance
	(In millions)
Assets
Cash equivalents and Restricted cash(c)	$	228	$	—	$	—	$	—	$	—	$	228	$	176	$	—	$	—	$	—	$	—	$	176
Nuclear decommissioning trusts
Equity securities	953		—		—		242		—		1,195		987		—		—		201		—		1,188
Fixed income securities	146		479		—		136		—		761		133		460		—		133		—		726
Private equity and other	—		—		—		368		—		368		—		—		—		358		—		358
Hedge funds and similar investments	227		18		—		—		—		245		228		17		—		—		—		245
Cash equivalents	30		—		—		—		—		30		35		—		—		—		—		35
Other investments(d)
Equity securities	83		—		—		—		—		83		84		—		—		—		—		84
Fixed income securities	9		2		—		—		—		11		9		2		—		—		—		11
Cash equivalents	44		—		—		—		—		44		38		—		—		—		—		38
Derivative assets
Commodity contracts(e)
Natural gas	139		51		99		—		(170)		119		207		56		109		—		(235)		137
Electricity	192		149		16		—		(285)		72		127		115		33		—		(194)		81
Environmental & Other	5		59		4		—		(64)		4		—		46		11		—		(46)		11
Other contracts	—		9		—		—		—		9		—		3		—		—		—		3
Total derivative assets	336		268		119		—		(519)		204		334		220		153		—		(475)		232
Total	$	2,056	$	767	$	119	$	746	$	(519)	$	3,169	$	2,024	$	699	$	153	$	692	$	(475)	$	3,093
Liabilities
Derivative liabilities
Commodity contracts(e)
Natural gas	$	(223)	$	(31)	$	(79)	$	—	$	210	$	(123)	$	(196)	$	(51)	$	(82)	$	—	$	227	$	(102)
Electricity	(176)		(85)		(109)		—		280		(90)		(124)		(59)		(52)		—		186		(49)
Environmental & Other	(4)		(42)		—		—		55		9		(1)		(31)		—		—		32		—
Other contracts	—		(1)		—		—		—		(1)		—		(1)		—		—		—		(1)
Total	$	(403)	$	(159)	$	(188)	$	—	$	545	$	(205)	$	(321)	$	(142)	$	(134)	$	—	$	445	$	(152)
Net Assets (Liabilities) at end of period	$	1,653	$	608	$	(69)	$	746	$	26	$	2,964	$	1,703	$	557	$	19	$	692	$	(30)	$	2,941
Assets
Current	$	483	$	217	$	64	$	—	$	(399)	$	365	$	426	$	130	$	102	$	—	$	(339)	$	319
Noncurrent	1,573		550		55		746		(120)		2,804		1,598		569		51		692		(136)		2,774
Total Assets	$	2,056	$	767	$	119	$	746	$	(519)	$	3,169	$	2,024	$	699	$	153	$	692	$	(475)	$	3,093
Liabilities
Current	$	(292)	$	(126)	$	(138)	$	—	$	412	$	(144)	$	(240)	$	(106)	$	(67)	$	—	$	327	$	(86)
Noncurrent	(111)		(33)		(50)		—		133		(61)		(81)		(36)		(67)		—		118		(66)
Total Liabilities	$	(403)	$	(159)	$	(188)	$	—	$	545	$	(205)	$	(321)	$	(142)	$	(134)	$	—	$	445	$	(152)
Net Assets (Liabilities) at end of period	$	1,653	$	608	$	(69)	$	746	$	26	$	2,964	$	1,703	$	557	$	19	$	692	$	(30)	$	2,941

_______________________________________

(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 $23 million and $10 million recorded in Restricted cash on DTE Energy's Consolidated Statements of Financial Position at March 31, 2026 and December 31, 2025, 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.

30

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The following table presents assets for DTE Electric measured and recorded at fair value on a recurring basis as of:

	March 31, 2026										December 31, 2025
	Level 1		Level 2		Level 3		Other(a)		Net Balance		Level 1		Level 2		Level 3		Other(a)		Net Balance
	(In millions)
Assets
Cash equivalents and Restricted cash(b)	$	95	$	—	$	—	$	—	$	95	$	83	$	—	$	—	$	—	$	83
Nuclear decommissioning trusts
Equity securities	953		—		—		242		1,195		987		—		—		201		1,188
Fixed income securities	146		479		—		136		761		133		460		—		133		726
Private equity and other	—		—		—		368		368		—		—		—		358		358
Hedge funds and similar investments	227		18		—		—		245		228		17		—		—		245
Cash equivalents	30		—		—		—		30		35		—		—		—		35
Other investments
Equity securities	31		—		—		—		31		33		—		—		—		33
Fixed income securities	—		2		—		—		2		—		2		—		—		2
Cash equivalents	27		—		—		—		27		26		—		—		—		26
Derivative assets — FTRs	—		—		4		—		4		—		—		11		—		11
Total	$	1,509	$	499	$	4	$	746	$	2,758	$	1,525	$	479	$	11	$	692	$	2,707
Assets
Current	$	95	$	—	$	4	$	—	$	99	$	83	$	—	$	11	$	—	$	94
Noncurrent	1,414		499		—		746		2,659		1,442		479		—		692		2,613
Total Assets	$	1,509	$	499	$	4	$	746	$	2,758	$	1,525	$	479	$	11	$	692	$	2,707

_______________________________________

(a)Amounts represent assets valued at NAV as a practical expedient for fair value.

(b)Amounts include $23 million and $10 million recorded in Restricted cash on DTE Electric's Consolidated Statements of Financial Position at March 31, 2026 and December 31, 2025, 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 $190 million and $179 million as of March 31, 2026 and December 31, 2025, respectively.

31

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

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 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:

	Three Months Ended March 31, 2026								Three Months Ended March 31, 2025
	Natural Gas		Electricity		Other		Total		Natural Gas		Electricity		Other		Total
	(In millions)
Net Assets (Liabilities) as of December 31	$	27	$	(19)	$	11	$	19	$	(18)	$	24	$	7	$	13
Transfers into Level 3 from Level 2	—		—		—		—		2		—		—		2
Transfers from Level 3 into Level 2	—		—		—		—		—		—		2		2
Total gains (losses)
Included in earnings(a)	(72)		(85)		3		(154)		(22)		(37)		—		(59)
Recorded in Regulatory liabilities	—		—		(3)		(3)		—		—		(2)		(2)
Purchases, issuances, and settlements
Settlements	65		11		(7)		69		38		(78)		(5)		(45)
Net Assets (Liabilities) as of March 31	$	20	$	(93)	$	4	$	(69)	$	—	$	(91)	$	2	$	(89)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31(a)	$	2	$	(53)	$	—	$	(51)	$	(17)	$	(92)	$	(1)	$	(110)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31	$	—	$	—	$	1	$	1	$	—	$	—	$	—	$	—

_______________________________________

(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.

32

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

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:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Net Assets as of beginning of period	$	11	$	9
Total losses recorded in Regulatory liabilities	(3)		(2)
Purchases, issuances, and settlements
Settlements	(4)		(4)
Net Assets as of March 31	$	4	$	3
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31	$	1	$	—

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 three months ended March 31, 2026 and 2025.

The following tables present the unobservable inputs related to DTE Energy's Level 3 assets and liabilities:

	March 31, 2026
Commodity Contracts	Derivative Assets		Derivative Liabilities		Valuation Techniques	Unobservable Input	Range						Weighted Average
	(In millions)
Natural Gas	$	99	$	(79)	Discounted Cash Flow	Forward basis price (per MMBtu)	$	(1.18)	—	$	4.90	/MMBtu	$	(0.18)	/MMBtu
Electricity	$	16	$	(109)	Discounted Cash Flow	Forward basis price (per MWh)	$	(40.45)	—	$	20.40	/MWh	$	(9.05)	/MWh

	December 31, 2025
Commodity Contracts	Derivative Assets		Derivative Liabilities		Valuation Techniques	Unobservable Input	Range						Weighted Average
	(In millions)
Natural Gas	$	109	$	(82)	Discounted Cash Flow	Forward basis price (per MMBtu)	$	(1.35)	—	$	9.33	/MMBtu	$	(0.13)	/MMBtu
Electricity	$	33	$	(52)	Discounted Cash Flow	Forward basis price (per MWh)	$	(21.82)	—	$	17.79	/MWh	$	(5.58)	/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.

33

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Fair Value of Financial Instruments

The following table presents the carrying amount and fair value of financial instruments for DTE Energy:

	March 31, 2026								December 31, 2025
	Carrying		Fair Value						Carrying		Fair Value
	Amount		Level 1		Level 2		Level 3		Amount		Level 1		Level 2		Level 3
	(In millions)
Notes receivable(a), excluding lessor finance leases	$	1,513	$	—	$	—	$	1,500	$	1,453	$	—	$	—	$	1,482
Short-term borrowings	$	—	$	—	$	—	$	—	$	882	$	—	$	882	$	—
Notes payable(b)	$	22	$	—	$	—	$	22	$	28	$	—	$	—	$	28
Long-term debt(c)	$	26,695	$	1,234	$	22,634	$	1,225	$	25,123	$	1,285	$	21,204	$	1,351

_______________________________________

(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:

	March 31, 2026								December 31, 2025
	Carrying		Fair Value						Carrying		Fair Value
	Amount		Level 1		Level 2		Level 3		Amount		Level 1		Level 2		Level 3
	(In millions)
Notes receivable — Affiliates	$	228	$	—	$	—	$	228	$	—	$	—	$	—	$	—
Notes receivable — Other(a)	$	289	$	—	$	—	$	309	$	274	$	—	$	—	$	289
Short-term borrowings — Other	$	—	$	—	$	—	$	—	$	652	$	—	$	652	$	—
Notes payable(b)	$	16	$	—	$	—	$	16	$	24	$	—	$	—	$	24
Long-term debt(c)	$	14,733	$	—	$	13,420	$	131	$	13,165	$	—	$	12,048	$	131

_______________________________________

(a)Noncurrent portion 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 8 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.

The following table summarizes DTE Electric's fair value of the nuclear decommissioning trust fund assets:

	March 31, 2026		December 31, 2025
	(In millions)
Fermi 2	$	2,569	$	2,523
Fermi 1	3		3
Low-level radioactive waste	27		26
	$	2,599	$	2,552

34

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

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:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Realized gains	$	22	$	8
Realized losses	$	(8)	$	(8)
Proceeds from sale of securities	$	213	$	139

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:

	March 31, 2026						December 31, 2025
	Fair Value		Unrealized Gains		Unrealized Losses		Fair Value		Unrealized Gains		Unrealized Losses
	(In millions)
Equity securities	$	1,195	$	767	$	(13)	$	1,188	$	742	$	(10)
Fixed income securities	761		25		(19)		726		25		(17)
Private equity and other	368		131		(8)		358		125		(7)
Hedge funds and similar investments	245		7		(10)		245		8		(6)
Cash equivalents	30		—		—		35		—		—
	$	2,599	$	930	$	(50)	$	2,552	$	900	$	(40)

The following table summarizes the fair value of the fixed income securities held in nuclear decommissioning trust funds by contractual maturity:

	March 31, 2026
	(In millions)
Due within one year	$	18
Due after one through five years	99
Due after five through ten years	139
Due after ten years	369
	$	625

Fixed income securities held in nuclear decommissioning trust funds include $136 million of non-publicly traded commingled funds that do not have a contractual maturity date.

Other Securities

At March 31, 2026 and December 31, 2025, DTE Energy 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 three months ended March 31, 2026 and 2025.

35

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 8 — FINANCIAL AND OTHER DERIVATIVE INSTRUMENTS

The Registrants recognize all derivatives at their fair value as Derivative assets or liabilities on their respective Consolidated Statements of Financial Position unless they qualify for certain scope exceptions, including the normal purchases and normal sales exception. Further, derivatives that qualify and are designated for hedge accounting are classified as either hedges of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge); or as hedges of the fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge). For cash flow hedges, the derivative gain or loss is deferred in Accumulated other comprehensive income (loss) and later reclassified into earnings when the underlying transaction occurs. For fair value hedges, changes in fair values for the derivative and hedged item are recognized in earnings each period. For derivatives that do not qualify or are not designated for hedge accounting, changes in fair value are recognized in earnings each period.

The Registrants' primary market risk exposure is associated with commodity prices, credit, and interest rates. The Registrants have risk management policies to monitor and manage market risks. The Registrants use derivative instruments to manage some of the exposure. DTE Energy uses derivative instruments for trading purposes in its Energy Trading segment. Contracts classified as derivative instruments include electricity, natural gas, oil, certain environmental contracts, forwards, futures, options, swaps, and foreign currency exchange contracts. Items not classified as derivatives include natural gas and environmental inventory, pipeline transportation contracts, certain environmental contracts, and natural gas storage assets.

DTE Electric — DTE Electric generates, purchases, distributes, and sells electricity. DTE Electric uses forward contracts to manage changes in the price of electricity and fuel. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Other derivative contracts are MTM and recoverable through the PSCR mechanism when settled. This results in the deferral of unrealized gains and losses as Regulatory assets or liabilities until realized.

DTE Gas — DTE Gas purchases, stores, transports, distributes, and sells natural gas, and buys and sells transportation and storage capacity. DTE Gas has fixed-priced contracts for portions of its expected natural gas supply requirements through March 2029. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Forward transportation and storage contracts are generally not derivatives and are therefore accounted for under the accrual method.

DTE Vantage — DTE Vantage manages and operates renewable gas recovery projects, power generation assets, and other customer specific energy solutions. Long-term contracts and hedging instruments are used in the marketing and management of the segment assets. These contracts and hedging instruments are generally not derivatives and are therefore accounted for under the accrual method.

Energy Trading — Commodity Price Risk — Energy Trading markets and trades electricity, natural gas physical products, and energy financial instruments, and provides energy and asset management services utilizing energy commodity derivative instruments. Forwards, futures, options, and swap agreements are used to manage exposure to the risk of market price and volume fluctuations in its operations. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.

Energy Trading — Foreign Currency Exchange Risk — Energy Trading has foreign currency exchange forward contracts to economically hedge fixed Canadian dollar commitments existing under natural gas and power purchase and sale contracts and natural gas transportation contracts. Energy Trading enters into these contracts to mitigate price volatility with respect to fluctuations of the Canadian dollar relative to the U.S. dollar. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.

Corporate and Other — Interest Rate Risk — DTE Energy may use interest rate swaps, treasury locks, and other derivatives to hedge the risk associated with interest rate market volatility.

Credit Risk — DTE Energy maintains credit policies that significantly minimize overall credit risk. These policies include an evaluation of potential customers’ and counterparties’ financial condition, including the viability of underlying productive assets, credit rating, collateral requirements, or other credit enhancements such as letters of credit or guarantees. DTE Energy generally uses standardized agreements that allow the netting of positive and negative transactions associated with a single counterparty. DTE Energy maintains a provision for credit losses based on factors surrounding the credit risk of its customers, historical trends, and other information. Based on DTE Energy's credit policies and its March 31, 2026 provision for credit losses, DTE Energy’s exposure to counterparty nonperformance is not expected to have a material adverse effect on DTE Energy's Consolidated Financial Statements.

36

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Derivative Activities

DTE Energy manages its MTM risk on a portfolio basis based upon the delivery period of its contracts and the individual components of the risks within each contract. Accordingly, it records and manages the energy purchase and sale obligations under its contracts in separate components based on the commodity (e.g. electricity or natural gas), the product (e.g. electricity for delivery during peak or off-peak hours), the delivery location (e.g. by region), the risk profile (e.g. forward or option), and the delivery period (e.g. by month and year). The following describes the categories of activities represented by their operating characteristics and key risks:

•Asset Optimization — Represents derivative activity associated with assets owned and contracted by DTE Energy, including forward natural gas purchases and sales, natural gas transportation, and storage capacity. Changes in the value of derivatives in this category typically economically offset changes in the value of underlying non-derivative positions, which do not qualify for fair value accounting. The difference in accounting treatment of derivatives in this category and the underlying non-derivative positions can result in significant earnings volatility.

•Marketing and Origination — Represents derivative activity transacted by originating substantially hedged positions with wholesale energy marketers, producers, end-users, utilities, retail aggregators, and alternative energy suppliers.

•Fundamentals Based Trading — Represents derivative activity transacted with the intent of taking a view, capturing market price changes, or putting capital at risk. This activity is speculative in nature as opposed to hedging an existing exposure.

•Other — Includes derivative activity at DTE Electric related to FTRs. Changes in the value of derivative contracts at DTE Electric are recorded as Derivative assets or liabilities, with an offset to Regulatory assets or liabilities as the settlement value of these contracts will be included in the PSCR mechanism when realized.

The following table presents the fair value of derivative instruments for DTE Energy:

	March 31, 2026				December 31, 2025
	Derivative Assets		Derivative Liabilities		Derivative Assets		Derivative Liabilities
	(In millions)
Derivatives designated as hedging instruments
Interest rate contracts	$	8	$	—	$	3	$	—
Foreign currency exchange contracts	—		(1)		—		(1)
Total derivatives designated as hedging instruments	$	8	$	(1)	$	3	$	(1)
Derivatives not designated as hedging instruments
Commodity contracts
Natural gas	$	289	$	(333)	$	372	$	(329)
Electricity	357		(370)		275		(235)
Environmental & Other	68		(46)		57		(32)
Foreign currency exchange contracts	1		—		—		—
Total derivatives not designated as hedging instruments	$	715	$	(749)	$	704	$	(596)
Current	$	536	$	(556)	$	482	$	(413)
Noncurrent	187		(194)		225		(184)
Total derivatives	$	723	$	(750)	$	707	$	(597)

The fair value of derivative instruments at DTE Electric was $4 million and $11 million at March 31, 2026 and December 31, 2025, respectively, comprised of FTRs recorded to Current Assets — Other on the Consolidated Statements of Financial Position and not designated as hedging instruments.

37

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Certain of DTE Energy's derivative positions are subject to netting arrangements which provide for offsetting of asset and liability positions as well as related cash collateral. Such netting arrangements generally do not have restrictions. Under such netting arrangements, DTE Energy offsets the fair value of derivative instruments with cash collateral received or paid for those contracts executed with the same counterparty, which reduces DTE Energy's Total Assets and Liabilities. Cash collateral is allocated between the fair value of derivative instruments and customer accounts receivable and payable with the same counterparty on a pro-rata basis to the extent there is exposure. Any cash collateral remaining, after the exposure is netted to zero, is reflected in Accounts receivable and Accounts payable as collateral paid or received, respectively.

DTE Energy also provides and receives collateral in the form of letters of credit which can be offset against net Derivative assets and liabilities as well as Accounts receivable and payable. DTE Energy had letters of credit of $2 million issued and outstanding at March 31, 2026 and December 31, 2025, which could be used to offset net Derivative liabilities. Letters of credit received from third parties which could be used to offset net Derivative assets were $16 million at March 31, 2026 and $17 million at December 31, 2025. Such balances of letters of credit are excluded from the tables below and are not netted with the recognized assets and liabilities in DTE Energy's Consolidated Statements of Financial Position.

For contracts with certain clearing agents, the fair value of derivative instruments is netted against realized positions with the net balance reflected as either 1) a Derivative asset or liability or 2) an Account receivable or payable. Other than certain clearing agents, Accounts receivable and Accounts payable that are subject to netting arrangements have not been offset against the fair value of Derivative assets and liabilities.

The following table presents net cash collateral offsetting arrangements for DTE Energy:

	March 31, 2026		December 31, 2025
	(In millions)
Cash collateral netted against Derivative assets	$	(18)	$	(35)
Cash collateral netted against Derivative liabilities	44		5
Cash collateral recorded in Accounts receivable(a)	30		20
Cash collateral recorded in Accounts payable(a)	(13)		(28)
Total net cash collateral posted (received)	$	43	$	(38)

_______________________________________

(a)Amounts are recorded net by counterparty.

38

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:

	March 31, 2026						December 31, 2025
	Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position		Gross Amounts of Recognized Assets (Liabilities)		Gross Amounts Offset in the Consolidated Statements of Financial Position		Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
	(In millions)
Derivative assets
Commodity contracts(a)
Natural gas	$	289	$	(170)	$	119	$	372	$	(235)	$	137
Electricity	357		(285)		72		275		(194)		81
Environmental & Other	68		(64)		4		57		(46)		11
Interest rate contracts	8		—		8		3		—		3
Foreign currency exchange contracts	1		—		1		—		—		—
Total derivative assets	$	723	$	(519)	$	204	$	707	$	(475)	$	232
Derivative liabilities
Commodity contracts(a)
Natural gas	$	(333)	$	210	$	(123)	$	(329)	$	227	$	(102)
Electricity	(370)		280		(90)		(235)		186		(49)
Environmental & Other	(46)		55		9		(32)		32		—
Foreign currency exchange contracts	(1)		—		(1)		(1)		—		(1)
Total derivative liabilities	$	(750)	$	545	$	(205)	$	(597)	$	445	$	(152)

_______________________________________

(a)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 the netting offsets of Derivative assets and liabilities showing the reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:

	March 31, 2026								December 31, 2025
	Derivative Assets				Derivative Liabilities				Derivative Assets				Derivative Liabilities
	Current		Noncurrent		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent
	(In millions)
Total fair value of derivatives	$	536	$	187	$	(556)	$	(194)	$	482	$	225	$	(413)	$	(184)
Counterparty netting	(383)		(118)		383		118		(325)		(115)		325		115
Collateral adjustment	(16)		(2)		29		15		(14)		(21)		2		3
Total derivatives as reported	$	137	$	67	$	(144)	$	(61)	$	143	$	89	$	(86)	$	(66)

39

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations is as follows:

	Location of Gain (Loss) Recognized in Income on Derivatives	Gain (Loss) Recognized in Income on Derivatives for the Three Months Ended March 31,
		2026		2025
		(In millions)
Commodity contracts
Natural gas	Operating Revenues — Non-utility operations	$	(112)	$	94
Natural gas	Fuel, purchased power, gas, and other — non-utility	25		(100)
Electricity	Operating Revenues — Non-utility operations	(53)		45
Environmental & Other	Operating Revenues — Non-utility operations	4		9
Foreign currency exchange contracts	Operating Revenues — Non-utility operations	1		—
Total		$	(135)	$	48

Revenues and energy costs related to trading contracts are presented on a net basis in DTE Energy's Consolidated Statements of Operations. Commodity derivatives used for trading purposes, and financial non-trading commodity derivatives, are accounted for using the MTM method with unrealized and realized gains and losses recorded in Operating Revenues — Non-utility operations. Non-trading physical commodity sale and purchase derivative contracts are generally accounted for using the MTM method with unrealized and realized gains and losses for sales recorded in Operating Revenues — Non-utility operations and purchases recorded in Fuel, purchased power, gas, and other — non-utility.

The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of March 31, 2026:

Commodity	Number of Units
Natural gas (MMBtu)	2,631,297,631
Electricity (MWh)	48,023,462
Foreign currency exchange ($ CAD)	83,060,811
FTR (MWh)	31,491
Renewable Energy Certificates (MWh)	13,528,697
Carbon emissions (Metric Tons)	817,859
Interest rate contracts ($ USD)	550,000,000

Various subsidiaries and equity investees of DTE Energy have entered into derivative and non-derivative contracts which contain ratings triggers and are guaranteed by DTE Energy. These contracts contain provisions which allow the counterparties to require that DTE Energy post cash or letters of credit as collateral in the event that DTE Energy’s credit rating is downgraded below investment grade. Certain of these provisions (known as "hard triggers") state specific circumstances under which DTE Energy can be required to post collateral upon the occurrence of a credit downgrade, while other provisions (known as "soft triggers") are not as specific. For contracts with soft triggers, it is difficult to estimate the amount of collateral which may be requested by counterparties and/or which DTE Energy may ultimately be required to post. The amount of such collateral which could be requested fluctuates based on commodity prices (primarily natural gas, power, and environmental) and the provisions and maturities of the underlying transactions. As of March 31, 2026, DTE Energy's contractual obligation to post collateral in the form of cash or letters of credit in the event of a downgrade to below investment grade, under both hard trigger and soft trigger provisions, was $459 million.

As of March 31, 2026, DTE Energy had $667 million of derivatives in net liability positions, for which hard triggers exist. There is no collateral that has been posted against such liabilities, including cash and letters of credit. Associated derivative net asset positions for which contractual offset exists were $492 million. The net remaining amount of $175 million is derived from the $459 million noted above.

40

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 9 — LONG-TERM FINANCINGS

Debt Issuances

Refer to the table below for debt issued through March 31, 2026:

Company	Month	Type	Interest Rate	Maturity Date	Amount
					(In millions)
DTE Electric	February	Mortgage Bonds(a)	4.85%	2036	$	800
DTE Electric	February	Mortgage Bonds(a)	5.55%	2056	800
					$	1,600

_______________________________________

(a)Proceeds used for the repayment of short-term borrowings, for capital expenditures, and for other general corporate purposes.

Debt Redemptions

Refer to the table below for debt redeemed through March 31, 2026:

Company	Month	Type	Interest Rate	Maturity Date	Amount
					(In millions)
DTE Electric	March	Securitization Bonds	5.97%	2026	$	16

Equity At-the-Market Program

In December 2025, DTE Energy filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which DTE Energy may sell, from time to time, up to an aggregate $1.5 billion of its common stock through an at-the-market program, including an equity forward sales component. During the three months ended March 31, 2026, DTE Energy entered into equity forward sale agreements for approximately 2.5 million shares at a weighted average forward price of $144.41 as of March 31, 2026, which includes expected sales commissions. There were no issuances under the ATM program for the three months ended March 31, 2026.

The forward sale agreements require DTE Energy to, at its election prior to December 31, 2026, either (i) physically settle the transactions by issuing shares of its Common stock to the forward counterparties in exchange for net proceeds at the then-applicable forward sale price specified by the agreements or (ii) net settle the transactions in whole or in part through the delivery to the forward counterparties or receipt from the forward counterparties of cash or shares in accordance with the provisions of the agreements.

No amounts have been or will be recorded on DTE Energy's Consolidated Financial Statements until settlements of the equity forward sale agreements occur. The initial forward sale prices are subject to daily adjustments prior to settlement. Until settlement of the equity forwards, earnings per share dilution resulting from the agreements, if any, will be determined under the treasury stock method. Refer to Note 6 to the Consolidated Financial Statements, "Earnings per Share," for additional information regarding the diluted earnings per share calculation.

NOTE 10 — SHORT-TERM CREDIT ARRANGEMENTS AND BORROWINGS

DTE Energy, DTE Electric, and DTE Gas have unsecured revolving credit agreements that can be used for general corporate borrowings, but are intended to provide liquidity support for each of the companies’ commercial paper programs. Borrowings under the revolvers are available at prevailing short-term interest rates. Letters of credit of up to $500 million may also be issued under the DTE Energy revolver. DTE Energy and DTE Electric also have other facilities to support letter of credit issuance and increase liquidity.

41

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The unsecured revolving credit agreements require a total funded debt to capitalization ratio of no more than 0.70 to 1 for DTE Energy and 0.65 to 1 for DTE Electric and DTE Gas. In the agreements, "total funded debt" means all indebtedness of each respective company and their consolidated subsidiaries, including finance lease obligations, hedge agreements, and guarantees of third parties’ debt, but excluding contingent obligations, nonrecourse and junior subordinated debt, and certain equity-linked securities and, except for calculations at the end of the second quarter, certain DTE Gas short-term debt. "Capitalization" means the sum of (a) total funded debt plus (b) "consolidated net worth," which is equal to consolidated total equity of each respective company and their consolidated subsidiaries (excluding pension effects under certain FASB statements), as determined in accordance with accounting principles generally accepted in the United States of America. At March 31, 2026, the total funded debt to total capitalization ratios for DTE Energy, DTE Electric, and DTE Gas were 0.67 to 1, 0.53 to 1, and 0.48 to 1, respectively, and were in compliance with this financial covenant.

The availability under these facilities as of March 31, 2026 is shown in the following table:

	DTE Energy		DTE Electric		DTE Gas		Total
	(In millions)
Unsecured revolving credit facility, expiring October 2030	$	1,500	$	1,000	$	300	$	2,800
Unsecured letter of credit facility, expiring June 2026(a)	150		—		—		150
Unsecured letter of credit facility, expiring February 2027	200		—		—		200
Unsecured letter of credit facilities, expiring June 2028	150		—		—		150
Unsecured letter of credit facility(b)	—		75		—		75
Unsecured letter of credit facilities, expiring December 2026	—		150		—		150
Unsecured letter of credit facility(b)	—		225		—		225
Unsecured letter of credit facility(c)	—		150		—		150
	2,000		1,600		300		3,900
Amounts outstanding at March 31, 2026
Letters of credit	364		414		—		778
	364		414		—		778
Net availability at March 31, 2026	$	1,636	$	1,186	$	300	$	3,122

_______________________________________

(a)Uncommitted letter of credit facility.

(b)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. DTE Energy may also utilize availability under this facility.

(c)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration.

In February 2026, DTE Energy entered into two unsecured term loan agreements for a total of $550 million and borrowed the full amount under each agreement. The term loans contain terms and conditions consistent with those of DTE Energy's unsecured revolving credit agreements. In March 2026, full repayment of the $550 million term loans was made.

In conjunction with maintaining certain exchange-traded risk management positions, DTE Energy may be required to post collateral with a clearing agent. DTE Energy has a demand financing agreement with its clearing agent, which allows the right of setoff with posted collateral. At March 31, 2026, the capacity under the facility was $200 million. The amounts outstanding under demand financing agreements were $110 million and $94 million at March 31, 2026 and December 31, 2025, respectively, and were fully offset by posted collateral.

42

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

NOTE 11 — LEASES

Lessor

DTE Energy’s lease income associated with operating leases, included in Operating Revenues — Non-utility operations in the Consolidated Statements of Operations, was as follows:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Fixed payments	$	4	$	4
Variable payments	8		11
	$	12	$	15

NOTE 12 — COMMITMENTS AND CONTINGENCIES

Environmental

DTE Electric

Air — DTE Electric is subject to the EPA ozone and fine particulate transport and acid rain regulations that limit power plant emissions of SO2 and NOX. The EPA and the state of Michigan have also issued emission reduction regulations relating to ozone, fine particulate, regional haze, mercury, and other air pollution. These rules have led to controls on fossil-fueled power plants to reduce SO2, NOX, mercury, and other emissions. Additional rule making may occur over the next few years which could require additional controls for SO2, NOX, and other hazardous air pollutants.

In March 2024, the EPA finalized the NAAQS for fine particulate matter, particles of pollution with diameters generally 2.5 micrometers and smaller (PM2.5). It is likely that areas of Michigan in which DTE Electric operates will be designated as non-attainment in the future, and the state will be required to develop a SIP for such areas. However, the EPA has announced its intention to review the standard. No impact is expected in the near term, and any long-term financial impacts cannot be assessed at this time.

In April 2024, the EPA finalized new rules to address emissions of GHGs from existing, new, modified, or reconstructed sources in the power sector. In June 2025, the EPA proposed a rule to repeal the GHG standards along with an alternative to eliminate various portions of the standards. The EPA intends to finalize the repeal or alternative in 2026. The financial impacts of the new rules are still being assessed.

Pending or future legislation or other regulatory actions could have a material impact on DTE Electric's operations and financial position and the rates charged to its customers. Potential impacts include expenditures for environmental equipment beyond what is currently planned, financing costs related to additional capital expenditures, the purchase of emission credits from market sources, higher costs of purchased power, and the retirement of facilities where control equipment is not economical. DTE Electric would seek to recover these incremental costs through increased rates charged to its utility customers, as authorized by the MPSC.

To comply with air pollution requirements, DTE Electric has spent approximately $2.4 billion. DTE Electric does not anticipate additional capital expenditures for air pollution requirements, subject to the results of future rulemakings.

Water — In response to EPA regulations and in accordance with the Clean Water Act section 316(b), DTE Electric was required to examine alternatives for reducing the environmental impacts of the cooling water intake structures at several of its facilities. A final rule became effective in October 2014, which required studies to be completed and submitted as part of the NPDES permit application process to determine the type of technology needed to reduce impacts to fish. DTE Electric has completed the required studies and submitted reports for most of its generation plants, and a final study was submitted to EGLE in April 2025 for Monroe power plant. Final compliance for the installation of any required technology to reduce the impacts of water intake structures will be determined by the state on a case by case, site specific basis.

43

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

As part of the Monroe power plant NPDES permit, EGLE has added an option to evaluate the thermal discharge of the facility as it relates to Clean Water Act section 316(a) regulations in order to establish an appropriate temperature discharge limit. DTE Electric has completed biological studies in accordance with an EGLE approved study plan to evaluate the thermal discharge impacts to an aquatic community. The data is being processed and compiled into a comprehensive report. At the present time, DTE Electric cannot predict the outcome of this evaluation or financial impact.

Contaminated and Other Sites — Prior to the construction of major interstate natural gas pipelines, gas for heating and other uses was manufactured locally from processes involving coal, coke, or oil. The facilities, which produced gas, have been designated as MGP sites. DTE Electric conducted remedial investigations at contaminated sites, including three former MGP sites. The investigations at the former MGP sites have revealed contamination related to the by-products of gas manufacturing. Cleanup of one of the MGP sites is complete, and that site is closed. DTE Electric has also completed partial closure of one additional site. Cleanup activities associated with the remaining sites will continue over the next several years. In addition to the MGP sites, DTE Electric is also in the process of cleaning up other contaminated sites, including the area surrounding an ash landfill, electrical distribution substations, electric generating power plants, and underground and above ground storage tank locations. The findings of these investigations indicated that the estimated cost to remediate these sites is expected to be incurred over the next several years. At both March 31, 2026 and December 31, 2025, DTE Electric had $10 million accrued for remediation. These costs are not discounted to their present value. Any change in assumptions, such as remediation techniques, nature and extent of contamination, and regulatory requirements, could impact the estimate of remedial action costs for the sites and affect DTE Electric’s financial position and cash flows. DTE Electric believes the likelihood of a material change to the accrued amount is remote based on current knowledge of the conditions at each site.

Coal Combustion Residuals and Effluent Limitations Guidelines — A final EPA rule for the disposal of coal combustion residuals, commonly known as coal ash, became effective in October 2015 and has continued to be updated in subsequent years. The rule is based on the continued listing of coal ash as a non-hazardous waste and relies on various self-implementation design and performance standards. DTE Electric currently owns and operates multiple coal ash storage facilities to manage coal ash from coal-fired power plants that are subject to federal, state, and local CCR and solid waste regulations. At certain facilities, the rule required ongoing sampling and testing of monitoring wells, compliance with groundwater standards, and closure.

On May 8, 2024, the EPA finalized a new rule to regulate legacy CCR surface impoundments and CCR management units. The rule expands the reach of the CCR rule to inactive electric generation sites and previously unregulated CCR at any active facility. The rule also extends the dewatering and stabilization criteria of the closure in place performance standards to existing CCR landfills. DTE Electric has no legacy CCR surface impoundments, but has other regulated CCR units and is evaluating sites for CCR management units. Challenges to the rule have been filed, and DTE Electric will continue to monitor for regulatory developments. The D.C. Circuit Court has held the pending litigation in abeyance to accommodate the EPA's reconsideration of the rule. The EPA recently announced their desire to revise the CCR regulations. While a draft is currently under interagency review with the Office of Management and Budget, the effective date and extent of any revisions are unknown. In February 2026, the EPA published a rule that extends certain compliance deadlines for CCR management units until 2027 and beyond. The current cost estimate to comply with the revised rule is approximately $415 million as of March 31, 2026, and is recorded to Asset retirement obligations. The estimate will continue to be updated as necessary when site-specific details are more fully known. These costs are expected to be recoverable under the regulatory construct as part of removal costs.

At the state level, legislation was signed in December 2018 and provides for further regulation of the CCR program in Michigan. Additionally, the statutory revision provides the basis of a CCR program that EGLE has submitted to the EPA for approval to fully regulate the CCR program in Michigan in lieu of a federal permit program. The EPA is currently working with EGLE in reviewing the submitted state program, and DTE Electric will work with EGLE to implement the state program that may be approved in the future.

The EPA updated and revised the ELG in 2015, 2020, and 2024. In each revision, the EPA has re-established technology-based standards applicable to wastewaters created at facilities with an electrical generating unit. In each revision, as well as an additional 2025 revision, the EPA also established new applicability dates.

44

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

The Reconsideration Rule, finalized in 2020, provided additional opportunities by finalizing a group of compliance subcategories that provided cessation of coal as a compliance option. Additionally, the 2020 Reconsideration Rule established the Voluntary Incentives Program (VIP) for FGD wastewater compliance only. If a facility applies for the VIP, they must meet more stringent standards, but are allowed an extended time period to meet the compliance requirements by December 1, 2028. The Reconsideration Rule provided these new opportunities for DTE Electric to evaluate existing ELG compliance strategies and make any necessary adjustments to ensure full compliance with the ELGs in a cost-effective manner.

Compliance schedules for individual facilities and individual waste streams are determined through issuance of new NPDES permits by the state of Michigan. The state of Michigan issued an NPDES permit for the Belle River power plant establishing compliance deadlines based on the 2020 Reconsideration Rule. On October 11, 2021, DTE Electric submitted a Notice of Planned Participation (NOPP) to the state of Michigan that formally announced the intent to pursue compliance subcategories as ELG compliance options: the cessation of coal at the Belle River power plant no later than December 31, 2028 and the VIP for FGD wastewater at Monroe power plant by December 31, 2028.

The EPA also finalized Supplemental ELG Rules on May 9, 2024 which were further amended on December 31, 2025. This updated the regulations from the 2020 Reconsideration Rule for FGD wastewater, bottom ash transport water (BATW), combustion residual leachate (CRL), and legacy wastewater (LWW). The supplemental rule established new technology-based effluent limitations guidelines and standards applicable to FGD wastewater, BATW, CRL, and LWW. DTE Electric achieved BATW compliance in 2025. FGD wastewater retrofits must be completed as soon as possible, beginning July 8, 2024 and no later than December, 31 2034 or December 31, 2029 if a permittee is pursuing the VIP subcategory for FGD wastewater. The Cessation of Coal compliance subcategory and VIP from the 2020 Reconsideration Rule were maintained in the 2024 and 2025 Supplemental Rule and continue to be a fundamental component of DTE Electric's ELG compliance strategy. At this time, DTE Electric cannot predict effective dates for any revisions or their financial impacts.

DTE Electric's compliance strategy includes the conversion of the two generating units at the Belle River power plant to a natural gas peaking resource, which was included in the NOPP filed in 2021. One unit is nearing completion of conversion with the second unit expected to be complete by the end of 2026. DTE Electric also submitted a NOPP for the cessation of coal compliance subcategory for generating units 3 and 4 at the Monroe power plant to retire in 2028. DTE Electric plans to retire Monroe's generating units 1 and 2 in 2032.

DTE Electric continues to evaluate compliance strategies, technologies and system designs to achieve compliance with the EPA rules at the Monroe power plant in accordance with the VIP subcategory for FGD for Monroe's generating units 1 and 2. Additionally, DTE Electric is evaluating compliance strategies and options to address new requirement and deadlines for other wastewater streams in the 2024 Supplemental Rule and 2025 Deadline Extension Rule at both Belle River Power Plant and Sibley Quarry.

DTE Electric currently estimates the impact of the CCR and ELG rules to be $369 million of capital expenditures through 2030. This estimate may change in future periods as DTE Electric evaluates the CCR and ELG rules discussed above that have recently been finalized.

DTE Gas

Contaminated and Other Sites — DTE Gas owns or previously owned 14 former MGP sites. Investigations have revealed contamination related to the by-products of gas manufacturing at each site. Cleanup of eight MGP sites is complete and those sites are closed. DTE Gas has also completed partial closure of five additional sites. Cleanup activities associated with the remaining sites will continue over the next several years. The MPSC has established a cost deferral and rate recovery mechanism for investigation and remediation costs incurred at former MGP sites. In addition to the MGP sites, DTE Gas is also in the process of cleaning up other contaminated sites, including gate stations, gas pipeline releases, and underground storage tank locations. At both March 31, 2026 and December 31, 2025, DTE Gas had $25 million accrued for remediation. These costs are not discounted to their present value. Any change in assumptions, such as remediation techniques, nature and extent of contamination, and regulatory requirements, could impact the estimate of remedial action costs for the sites and affect DTE Gas' financial position and cash flows. DTE Gas anticipates the cost amortization methodology approved by the MPSC, which allows for amortization of the MGP costs over a ten-year period beginning with the year subsequent to the year the MGP costs were incurred, will prevent the associated investigation and remediation costs from having a material adverse impact on DTE Gas' results of operations.

45

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Air — In March 2023, the EPA published the Good Neighbor Rule, which includes provisions for compressor engines operated for the transportation of natural gas. In June 2024, the United States Supreme Court issued an opinion granting emergency applications to stay the Good Neighbor Rule. The stay will remain in effect during other litigation. The status of the rule remains uncertain as litigation is ongoing. At this time, DTE Gas does not expect a significant financial impact.

As noted above for DTE Electric, the EPA finalized the NAAQS for fine particulate matter in March 2024. It is likely that areas of Michigan in which DTE Gas operates will be designated as non-attainment in the future and the state will be required to develop a SIP for such areas. However, the EPA has announced its intention to review the standard. No impact is expected in the near term, and any long-term financial impacts cannot be assessed at this time.

Non-utility

DTE Energy's non-utility businesses are subject to a number of environmental laws and regulations dealing with the protection of the environment from various pollutants.

In March 2019, the EPA issued an FOV to EES Coke Battery, LLC ("EES Coke"), the Michigan coke battery facility that is a wholly-owned subsidiary of DTE Energy, alleging that the 2008 and 2014 permits issued by EGLE did not comply with the Clean Air Act. In September 2020, the EPA issued another FOV alleging EES Coke's 2018 and 2019 SO2 emissions exceeded projections and hence violated non-attainment new source review permitting requirements. EES Coke evaluated the EPA's alleged violations and believes that the permits approved by EGLE complied with the Clean Air Act. EES Coke responded to the EPA's September 2020 allegations demonstrating its actual emissions are compliant with non-attainment new source review requirements. On June 1, 2022, the U.S. Department of Justice ("DOJ"), on behalf of the EPA, filed a complaint against EES Coke in the U.S. District Court for the Eastern District of Michigan alleging that EES Coke failed to comply with non-attainment new source review requirements under the Clean Air Act when it applied for the 2014 permit. In November 2022, the Sierra Club and City of River Rouge were granted intervention. On May 20, 2024, the court granted a motion allowing the DOJ to amend their complaint to add EES Coke's parent entities, including DTE Energy, as defendants. The parent entities were added in an attempt to share in any potential liability; there are no additional claims alleged. The EPA filed a motion for partial summary judgment on liability that was granted by the trial court on August 25, 2025. EES Coke sought certification for an interlocutory appeal to the Sixth Circuit Court of Appeals, which was denied on September 12, 2025. Trial was held on remedies and parent liability, and concluded on September 29, 2025. Final briefs were submitted in the case on December 5, 2025. On February 17, 2026, the trial court issued an order imposing a $100 million civil penalty on the defendants, including DTE Energy. The court also ordered the defendants to seek a permit for the installation of pollution controls and to establish and fund an action committee for community air quality improvement projects for an additional $20 million. DTE Energy accrued $112 million during the first quarter of 2026 to bring the total accrual for the order to $120 million as of March 31, 2026. The defendants will appeal this judgment and cannot predict the final outcome or additional financial impact of this matter.

Other

In 2010, the EPA finalized a new one-hour SO2 ambient air quality standard that requires states to submit plans and associated timelines for non-attainment areas that demonstrate attainment with the new SO2 standard in phases. Phase 1 addresses non-attainment areas designated based on ambient monitoring data. Phase 2 addresses non-attainment areas with large sources of SO2 and modeled concentrations exceeding the National Ambient Air Quality Standards for SO2. Phase 3 addresses smaller sources of SO2 with modeled or monitored exceedances of the new SO2 standard.

Michigan's Phase 1 non-attainment area included DTE Energy facilities. However, the EPA published a Federal Implementation Plan (FIP) for the area in June 2022 that did not impact any DTE Energy facilities. It is also not expected that Phase 3 will have any impact on DTE Energy.

Michigan's Phase 2 non-attainment area includes DTE Electric facilities in St. Clair County. The EPA approved a clean data determination request submitted by EGLE. In April 2026, the EPA officially redesignated this area to attainment and no further action will be required.

46

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

REF Guarantees

DTE Energy provided certain guarantees and indemnities in conjunction with the sales of interests in or lease of its previously operated REF facilities. The guarantees cover potential commercial, environmental, and tax-related obligations that will survive until 90 days after expiration of all applicable statutes of limitations. DTE Energy estimates that its maximum potential liability under these guarantees at March 31, 2026 was $201 million. Payments under these guarantees are considered remote.

Other Guarantees

In certain limited circumstances, the Registrants enter into contractual guarantees. The Registrants may guarantee another entity’s obligation in the event it fails to perform and may provide guarantees in certain indemnification agreements. The Registrants may also provide indirect guarantees for the indebtedness of others. DTE Energy’s guarantees are not individually material with maximum potential payments totaling $69 million at March 31, 2026. Payments under these guarantees are considered remote.

The Registrants are periodically required to obtain performance surety bonds in support of obligations to various governmental entities and other companies in connection with its operations. As of March 31, 2026, DTE Energy had $376 million of performance bonds outstanding, including $272 million for DTE Electric. Performance bonds are not individually material, except for $91 million of bonds supporting Energy Trading operations. These bonds are meant to provide counterparties with additional assurance that Energy Trading will meet its contractual obligations for various commercial transactions. The terms of the bonds align with those of the underlying Energy Trading contracts and are estimated to be outstanding approximately 1 to 3 years. In the event that any performance bonds are called for nonperformance, the Registrants would be obligated to reimburse the issuer of the performance bond. The Registrants are released from the performance bonds as the contractual performance is completed and does not believe that a material amount of any currently outstanding performance bonds will be called.

Labor Contracts

There are several bargaining units for DTE Energy subsidiaries' approximately 4,800 represented employees, including DTE Electric's approximately 2,550 represented employees. This represents 50% and 58% of DTE Energy's and DTE Electric's total employees, respectively. Of these represented employees, approximately 18% have contracts expiring within one year for DTE Energy. Approximately 26% of the represented employees have contracts expiring within one year for DTE Electric.

Purchase Commitments

Utility capital expenditures and expenditures for non-utility businesses will be approximately $6.8 billion and $5.2 billion in 2026 for DTE Energy and DTE Electric, respectively. The Registrants have made certain commitments in connection with the estimated 2026 annual capital expenditures.

Ludington Plant Contract Dispute

DTE Electric and Consumers Energy Company ("Consumers"), joint owners of the Ludington Hydroelectric Pumped Storage plant ("Ludington"), entered into a 2010 engineering, procurement, and construction agreement with Toshiba International Corporation ("TIC"), under which TIC contracted to perform a major overhaul and upgrade of Ludington. TIC later assigned the contract and all its obligations to Toshiba America Energy Systems ("TAES"). TAES' work under the contract was incomplete, defective, and non-conforming. DTE Electric and Consumers repeatedly documented TAES' failures to perform under the contract and demanded that TAES provide a comprehensive plan to resolve those matters, including adherence to its warranty commitments and other contractual obligations. DTE Electric and Consumers engaged in extensive efforts to resolve these issues with TAES, including formal demands to TAES' parent, Toshiba Corporation ("Toshiba"), under a parent guaranty it provided. TAES did not provide a comprehensive plan or otherwise met its performance obligations. As a result of TAES' defaults, DTE Electric and Consumers terminated the contract.

47

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

In order to enforce their rights under the contract and parent guaranty, and to pursue appropriate damages, DTE Electric and Consumers filed a complaint against TAES and Toshiba in the U.S. District Court for the Eastern District of Michigan in 2022. TAES and Toshiba filed a motion to dismiss the complaint, along with an answer and counterclaims seeking approximately $15 million in damages related to payments allegedly owed under the parties' contract. The motion to dismiss the complaint was denied. The case against TAES went to trial before a jury and in December 2025, a jury returned a verdict in DTE Electric and Consumers' favor finding TAES breached its warranties and other contractual duties in overhauling Ludington. The jury awarded damages for TAES's breaches of contract, as well as liquidated damages for late completion of work. The jury rejected TAES' affirmative defenses and counterclaim. TAES is pursuing post judgment relief by filing motions for appeal. DTE Electric cannot predict the financial impact or outcome of this matter.

In 2023, the MPSC approved a jointly-filed request by DTE Electric and Consumers for authority to defer as a regulatory asset the costs associated with repairing or replacing the defective work performed by TAES while the litigation with TAES and Toshiba moves forward. DTE Electric currently estimates its share of these repair and replacement costs ranges from $350 million to $400 million. Such costs will be offset by any potential litigation proceeds received from TAES or Toshiba. DTE Electric and Consumers will have the opportunity to seek recovery and ratemaking treatment for amounts recorded as a regulatory asset following resolution of the litigation, including amounts not recovered from TAES or Toshiba.

Other Contingencies

The Registrants are involved in certain other legal, regulatory, administrative, and environmental proceedings before various courts, arbitration panels, and governmental agencies concerning claims arising in the ordinary course of business. These proceedings include certain contract disputes, additional environmental reviews and investigations, audits, inquiries from various regulators, and pending judicial matters. The Registrants cannot predict the final disposition of such proceedings. The Registrants regularly review legal matters and record provisions for claims that they can estimate and are considered probable of loss. The resolution of these pending proceedings is not expected to have a material effect on the Registrants' Consolidated Financial Statements in the periods they are resolved.

For a discussion of contingencies related to regulatory matters and derivatives, see Notes 5 and 8 to the Consolidated Financial Statements, "Regulatory Matters" and "Financial and Other Derivative Instruments," respectively.

NOTE 13 — RETIREMENT BENEFITS AND TRUSTEED ASSETS

DTE Energy's subsidiary, DTE Energy Corporate Services, LLC, sponsors defined benefit pension plans and other postretirement benefit plans covering certain employees of the Registrants. Participants of all plans are solely DTE Energy and affiliate participants.

The following table details the components of net periodic benefit costs (credits) for pension benefits and other postretirement benefits for DTE Energy:

	Pension Benefits				Other Postretirement Benefits
	2026		2025		2026		2025
Three Months Ended March 31,
Service cost	$	13	$	12	$	4	$	4
Interest cost	53		54		15		15
Expected return on plan assets	(72)		(73)		(30)		(29)
Amortization of:
Net actuarial loss	24		22		—		—
Net periodic benefit cost (credit)	$	18	$	15	$	(11)	$	(10)

DTE Electric accounts for its participation in DTE Energy's qualified and non-qualified pension plans by applying multiemployer accounting. DTE Electric accounts for its participation in other postretirement benefit plans by applying multiple-employer accounting. Within multiemployer and multiple-employer plans, participants pool plan assets for investment purposes and to reduce the cost of plan administration. The primary difference between plan types is that assets contributed in multiemployer plans can be used to provide benefits for all participating employers, while assets contributed within a multiple-employer plan are restricted for use by the contributing employer.

48

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

As a result of multiemployer accounting treatment, capitalized costs associated with these plans are reflected in Property, plant, and equipment in DTE Electric's Consolidated Statements of Financial Position. The same capitalized costs are reflected as Regulatory assets and liabilities in DTE Energy's Consolidated Statements of Financial Position.

DTE Energy's subsidiaries are responsible for their share of qualified and non-qualified pension benefit costs. DTE Electric's allocated portion of pension benefit costs included in regulatory assets and liabilities, operation and maintenance expense, and capital expenditures were costs of $15 million and $14 million for the three months ended March 31, 2026 and 2025, respectively. These amounts may include recognized contractual termination benefit charges, curtailment gains, and settlement charges.

The following table details the components of net periodic benefit costs (credits) for other postretirement benefits for DTE Electric:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Service cost	$	3	$	3
Interest cost	11		12
Expected return on plan assets	(20)		(19)
Amortization of:
Net actuarial gain	(1)		(1)
Net periodic benefit credit	$	(7)	$	(5)

Pension and Other Postretirement Contributions

No contributions are currently expected for DTE Energy's qualified pension plans and no contributions are currently expected for DTE Energy's postretirement benefit plans in 2026. Plans may be updated at the discretion of management and depending on economic and financial market conditions. DTE Energy anticipates a transfer of up to $25 million of non-represented qualified pension plan funds from DTE Gas to DTE Electric during 2026 in exchange for cash consideration. In 2025, DTE Gas transferred $25 million of qualified pension plan funds to DTE Electric in exchange for cash consideration.

NOTE 14 — SEGMENT AND RELATED INFORMATION

DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the four reportable segments below. DTE Electric is a standalone registrant with one reportable segment.

Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.3 million residential, commercial, and industrial customers in southeastern Michigan.

Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.4 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.

DTE Vantage segment is comprised primarily of renewable energy projects that sell electricity and pipeline-quality gas and projects that deliver custom energy solutions to industrial, commercial, and institutional customers.

Energy Trading segment consists of energy marketing and trading operations.

Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds certain investments, including funds supporting regional development and economic growth.

The chief operating decision maker (CODM) at DTE Energy is the Financial Objectives committee, which is comprised of the Chief Executive Officer, Chief Financial Officer, and other executive leaders of DTE Energy. The CODM at DTE Electric is comprised of the Chief Executive Officer and Chief Financial Officer. The CODMs assess performance for the reportable segments detailed above and decide how to allocate resources based on Net Income (Loss) Attributable to DTE Energy Company and monitoring budget versus actual results. The accounting policies of the segments are the same as those described in the summary of significant accounting policies.

49

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider. Such billing primarily consists of power sales, sale and transportation of natural gas, and renewable natural gas sales in the segments below, as well as charges from Electric to other segments for use of the shared capital assets of DTE Electric.

	Three Months Ended March 31,
	2026		2025
	(In millions)
Electric segment(a)	$	19	$	19
Gas segment	8		4
DTE Vantage segment	36		40
Energy Trading segment	50		46
	$	113	$	109

_______________________________________

(a)Inter-segment billing for the Electric segment relating to Non-utility operations includes $1 million for both the three months ended March 31, 2026 and 2025.

All inter-segment transactions and balances are eliminated in consolidation for DTE Energy. Centrally incurred costs such as labor and overheads are assigned directly to DTE Energy's business segments or allocated based on various cost drivers, depending on the nature of service provided.

The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are also determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company. Carryforward items, such as tax credits and charitable contributions, are recorded at their individual company basis and adjusted at Corporate and Other for consolidated tax purposes.

The Reclassifications and Eliminations group below also includes the reclassification of deferred tax assets and prepaid pension assets, which are netted against deferred tax liabilities and accrued pension liabilities, respectively, for presentation on the DTE Energy Consolidated Statements of Financial Position.

50

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Profit (loss) financial data of DTE Energy's business segments follows:

	Electric(a)		Gas	DTE Vantage	Energy Trading	Total Reportable Segments		Corporate and Other	Reclassifications and Eliminations	Total
	(In millions)
Three months ended March 31, 2026
Operating Revenues — Utility operations	$	1,717	932	—	—	$	2,649	—	(26)	$	2,623
Operating Revenues — Non-utility operations	$	27	—	227	2,351	$	2,605	—	(87)	$	2,518
Depreciation and amortization	$	409	58	15	1	$	483	—	—	$	483
Interest expense	$	147	35	7	6	$	195	117	(19)	$	293
Interest income	$	(3)	(1)	(25)	(3)	$	(32)	(18)	19	$	(31)
Equity earnings of equity method investees	$	—	1	2	—	$	3	—	—	$	3
Other segment items (pre-tax)(b)	$	989	566	311	2,451	$	4,317	—	(113)	$	4,204
Income Tax Expense (Benefit)	$	(16)	63	(24)	(26)	$	(3)	(55)	—	$	(58)
Net Income (Loss) Attributable to DTE Energy Company	$	218	210	(59)	(78)	$	291	(44)	—	$	247
Three months ended March 31, 2025
Operating Revenues — Utility operations	$	1,454	876	—	—	$	2,330	—	(23)	$	2,307
Operating Revenues — Non-utility operations	$	5	—	188	2,026	$	2,219	—	(86)	$	2,133
Depreciation and amortization	$	382	54	15	1	$	452	—	—	$	452
Interest expense	$	133	32	8	2	$	175	94	(19)	$	250
Interest income	$	(2)	(2)	(20)	(3)	$	(27)	(15)	19	$	(23)
Equity earnings of equity method investees	$	—	—	7	—	$	7	—	—	$	7
Other segment items (pre-tax)(b)	$	826	523	147	1,937	$	3,433	3	(109)	$	3,327
Income Tax Expense (Benefit)	$	(3)	63	(8)	22	$	74	(92)	—	$	(18)
Net Income Attributable to DTE Energy Company	$	123	206	39	67	$	435	10	—	$	445

_______________________________________

(a)The Electric segment consists principally of DTE Electric. Refer to the DTE Electric Consolidated Statements of Operations and the DTE Electric Consolidated Statements of Financial Position for the standalone DTE Electric amounts.

(b)Other segment items include Fuel, purchased power, and gas — utility; Fuel, purchased power, gas, and other — non-utility; Operation and maintenance; Taxes other than income; Asset (gains) losses and impairments, net; Non-operating retirement benefits, net; Other income; and Other expenses.

51

DTE Energy Company — DTE Electric Company

Combined Notes to Consolidated Financial Statements (Unaudited) — (Continued)

Other financial data of DTE Energy's business segments follows:

	Electric(a)		Gas	DTE Vantage	Energy Trading	Total Reportable Segments		Corporate and Other	Reclassifications and Eliminations	Total
	(In millions)
March 31, 2026
Investment in equity method investees	$	4	19	78	—	$	101	11	—	$	112
Capital expenditures and acquisitions	$	1,048	166	14	1	$	1,229	—	—	$	1,229
Goodwill	$	1,208	743	25	17	$	1,993	—	—	$	1,993
Total Assets	$	40,719	9,215	2,519	998	$	53,451	5,270	(3,613)	$	55,108
December 31, 2025
Investment in equity method investees	$	4	19	77	—	$	100	22	—	$	122
Capital expenditures and acquisitions	$	3,892	661	80	6	$	4,639	—	—	$	4,639
Goodwill	$	1,208	743	25	17	$	1,993	—	—	$	1,993
Total Assets	$	39,370	8,987	2,426	1,313	$	52,096	5,145	(3,175)	$	54,066

_______________________________________

(a)The Electric segment consists principally of DTE Electric. Refer to the DTE Electric Consolidated Statements of Operations and the DTE Electric Consolidated Statements of Financial Position for the standalone DTE Electric amounts.

52

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following combined discussion is separately filed by DTE Energy and DTE Electric. However, DTE Electric does not make any representations as to information related solely to DTE Energy or the subsidiaries of DTE Energy other than itself.

EXECUTIVE OVERVIEW

DTE Energy is a diversified energy company and is the parent company of DTE Electric and DTE Gas, regulated electric and natural gas utilities engaged primarily in the business of providing electricity and natural gas sales, distribution, and storage services throughout Michigan. DTE Energy also operates two energy-related non-utility segments with operations throughout the United States.

The following table summarizes DTE Energy's financial results:

	Three Months Ended March 31,
	2026		2025
	(In millions, except per share amounts)
Net Income Attributable to DTE Energy Company	$	247	$	445
Diluted Earnings per Common Share	$	1.19	$	2.14

The decrease in Net Income Attributable to DTE Energy Company for the three months ended March 31, 2026 was primarily due to lower earnings in the Energy Trading and DTE Vantage segments and Corporate and Other, partially offset by higher earnings in the Electric segment.

STRATEGY

DTE Energy's strategy is to achieve long-term earnings per share growth with a strong balance sheet and attractive dividend.

DTE Energy's utilities are investing capital to support a modern, reliable grid and cleaner, affordable energy through investments in base infrastructure and new generation. Increasing intensity of windstorms and other weather events, coupled with increasing electric vehicle adoption and future data center load, will drive a continued need for substantial grid investment over the long-term.

DTE Energy plans to reduce the carbon emissions of its electric utility operations 65% by 2028, 85% by 2032, and 90% by 2040 from 2005 carbon emissions levels. DTE Energy plans to end its use of coal-fired power plants in 2032 and is committed to a net zero carbon emissions goal by 2050 for its electric and gas utility operations.

Additionally, as a result of legislation passed by the state of Michigan in 2023, DTE Energy will be required to meet a 100% clean energy portfolio standard by 2040. Clean energy sources include renewables, nuclear, and natural gas-fired plants equipped with a carbon capture and storage system that is at least 90% effective in reducing carbon emissions to the atmosphere. The legislation also requires 50% of an electric utility's energy to be generated from renewable sources by 2030 and 60% by 2035. DTE Energy is currently assessing the impacts of this legislation and will include updates in its next Integrated Resource Plan, currently planned for 2026, to comply with the new requirements.

To achieve carbon reduction goals at the electric utility, DTE Energy will continue its transition away from coal-powered energy sources and is replacing or offsetting the generation from these facilities with renewable energy, natural gas, battery storage, and energy waste reduction initiatives. Refer to the "Capital Investments" section below for further discussion regarding DTE Energy's retirement of its aging coal-fired plants and transition to renewable energy and other sources. Over the long-term, DTE Energy is also monitoring and pursuing the advancement of emerging technologies such as long-duration storage, modular nuclear reactors, and carbon capture and sequestration, and how these technologies may support clean, reliable generation and customer affordability.

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For the gas utility, DTE Energy aims to cut carbon emissions across the entire value chain. DTE Energy plans to reduce the carbon emissions from its gas utility operations by 65% by 2030 and 80% by 2040, and is committed to a goal of net zero emissions by 2050 from internal gas operations and gas suppliers. To achieve net zero, DTE Energy is working to source gas with lower methane intensity, reduce emissions through its gas main renewal and pipeline integrity programs, and if necessary, use carbon offsets to address any remaining emissions. DTE Energy also aims to help DTE Gas customers reduce their emissions by approximately 35% by 2040 by increasing energy efficiency, pursuing advanced technologies such as hydrogen and carbon capture and sequestration, and through the CleanVision Natural Gas Balance program which provides customers the option to use carbon offsets and renewable natural gas.

DTE Energy expects that these initiatives at the electric and gas utilities will continue to provide significant opportunities for capital investments and result in earnings growth. DTE Energy is focused on executing its plans to achieve operational excellence and customer satisfaction with a focus on customer affordability. To support its goals for customer affordability, DTE Energy is working to implement operational efficiencies and optimize opportunities to generate tax credits relating to renewable energy, nuclear generation, energy storage, and carbon capture and sequestration. These tax credits may reduce the cost of owning related assets and reduce customer rate impacts from any future cost recoveries. DTE Energy's utilities operate in a constructive regulatory environment and have solid relationships with their regulators.

DTE Energy also has significant investments in non-utility businesses and expects growth opportunities in its DTE Vantage segment. DTE Energy employs disciplined investment criteria when assessing growth opportunities that leverage its assets, skills, and expertise, and provides attractive returns and diversity in earnings and geography. Specifically, DTE Energy invests in targeted markets with attractive competitive dynamics where meaningful scale is in alignment with its risk profile.

A key priority for DTE Energy is to maintain a strong balance sheet which facilitates access to capital markets and reasonably priced financing. Growth will be funded through internally generated cash flows and the issuance of debt and equity. DTE Energy has an enterprise risk management program that, among other things, is designed to monitor and manage exposure to earnings and cash flow volatility related to commodity price changes, interest rates, and counterparty credit risk.

CAPITAL INVESTMENTS

DTE Energy's utility businesses will require significant capital investments to maintain and improve the electric generation and electric and natural gas distribution infrastructure and to comply with environmental regulations and achieve goals for carbon emission reductions. Capital plans may be regularly updated as these requirements and goals evolve and may be subject to regulatory approval.

DTE Electric's capital investments over the 2026-2030 period are estimated at $30 billion, comprised of $11 billion for distribution infrastructure, $4 billion for base infrastructure, and $15 billion for cleaner generation including renewables.

DTE Electric has retired all eleven coal-fired generation units at the Trenton Channel, River Rouge, and St. Clair facilities, as well as one unit at the Belle River facility. DTE Electric has also announced plans to retire its remaining five coal fired generating units, including the remaining unit at the Belle River facility in 2026. The four units at the Monroe facility are expected to be retired in two stages in 2028 and 2032. DTE Electric plans to repurpose the Trenton Channel facility to a battery energy storage system in 2026, and convert the Belle River facility from a base load coal plant to a natural gas peaking resource in 2026. Generation from the retired facilities will continue to be replaced or offset with a combination of renewables, energy waste reduction, demand response, battery storage, and natural gas fueled generation.

DTE Gas' capital investments over the 2026-2030 period are estimated at $4.5 billion, comprised of $2.7 billion for base infrastructure and $1.8 billion for the gas renewal program, which includes main and service renewals, meter move-out, and pipeline integrity projects.

DTE Electric and DTE Gas plan to seek regulatory approval for capital expenditures consistent with ratemaking treatment.

DTE Energy's non-utility businesses' capital investments are primarily for expansion, growth, and ongoing maintenance in the DTE Vantage segment, including approximately $2.0 billion from 2026-2030 for custom energy solutions and renewable energy, while expanding into carbon capture and sequestration.

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ENVIRONMENTAL MATTERS

The Registrants are subject to extensive environmental regulations, including those addressing climate change. Additional costs may result as the effects of various substances on the environment are studied and governmental regulations are developed and implemented. Actual costs to comply could vary substantially. The Registrants expect to continue recovering environmental costs related to utility operations through rates charged to customers, as authorized by the MPSC.

Increased costs for energy produced from traditional coal-based sources due to recent, pending, and future regulatory initiatives could also increase the economic viability of energy produced from renewable, natural gas fueled generation, and/or nuclear sources, energy waste reduction initiatives, and the potential development of market-based trading of carbon instruments.

For further discussion of environmental matters, see Note 12 to the Consolidated Financial Statements, "Commitments and Contingencies."

OUTLOOK

Over the coming years, DTE Energy and the broader energy sector are expected to undergo significant transformation. DTE Energy's strong utility base, combined with its integrated non-utility operations, position it well for long-term growth.

Looking forward, DTE Energy will focus on several areas that are expected to improve future performance:

•electric and gas customer satisfaction;

•electric distribution system reliability;

•new electric generation and storage;

•gas distribution system renewal;

•reducing carbon emissions at the electric and gas utilities;

•rate competitiveness and affordability;

•regulatory stability and investment recovery for the electric and gas utilities;

•strategic investments in growth projects at DTE Vantage;

•employee engagement and health, safety, and wellbeing;

•cost structure optimization across all business segments; and

•cash, capital, and liquidity to maintain or improve financial strength.

DTE Energy will continue to pursue opportunities to grow its businesses in a disciplined manner if it can secure opportunities that meet its strategic, financial, and risk criteria.

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RESULTS OF OPERATIONS

The following sections provide a detailed discussion of the operating performance and future outlook of DTE Energy's segments. Segment information, described below, includes intercompany revenues, expenses, and other income and deductions that are eliminated in the Consolidated Financial Statements.

	Three Months Ended March 31,
	2026		2025
	(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment
Electric segment	$	218	$	123
Gas segment	210		206
DTE Vantage segment	(59)		39
Energy Trading segment	(78)		67
Corporate and Other	(44)		10
Net Income Attributable to DTE Energy Company	$	247	$	445

ELECTRIC SEGMENT

The Results of Operations discussion for DTE Electric is presented in a reduced disclosure format in accordance with General Instruction H(2) of Form 10-Q.

The Electric segment consists principally of DTE Electric. Electric results and outlook are discussed below:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Revenues
Utility operations	$	1,717	$	1,454
Non-utility operations	27		5
	1,744		1,459
Operating Expenses
Fuel and purchased power — utility	510		410
Fuel and purchased power — non-utility	13		—
Operation and maintenance	397		345
Depreciation and amortization	409		382
Taxes other than income	103		94
Asset (gains) losses and impairments, net	2		—
	1,434		1,231
Operating Income	310		228
Other (Income) and Deductions	108		108
Income Tax Benefit	(16)		(3)
Electric Segment Net Income Attributable to DTE Energy Company	$	218	$	123
Reconciliation of Electric Segment to DTE Electric Net Income	(3)		(2)
DTE Electric Net Income	$	215	$	121

See DTE Electric's Consolidated Statements of Operations for a complete view of its results. Differences between the Electric segment and DTE Electric's Consolidated Statements of Operations are primarily due to non-utility operations at DTE Sustainable Generation (some of which includes intra-segment activity that is eliminated in consolidation) and the classification of certain benefit costs. Refer to Note 13 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets" for additional information.

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Operating Revenues increased $285 million in the three months ended March 31, 2026. Revenues associated with certain mechanisms and surcharges, including recovery of fuel and purchased power, are offset by related expenses elsewhere in the Registrants' Consolidated Statements of Operations. The increase was due to the following:

	Three Months
	(In millions)
Regulatory Mechanism — RPS	$	98
Interconnection sales	57
Power Supply Cost Recovery	55
Implementation of new rates	40
Non-utility revenues(a)	22
Weather	11
Base sales / rate mix	2
	$	285

______________________________

(a)The increase was primarily due to the acquisition of a non-utility business by DTE Sustainable Generation during the third quarter 2025.

Revenue results are impacted by changes in sales volumes, which are summarized in the table below:

	Three Months Ended March 31,
	2026	2025
	(In thousands of MWh)
DTE Electric Sales
Residential	3,664	3,660
Commercial	3,869	3,886
Industrial	1,924	2,053
Other	50	53
	9,507	9,652
Interconnection sales	1,967	2,500
Total DTE Electric Sales	11,474	12,152
DTE Electric Deliveries
Retail and wholesale	9,507	9,652
Electric retail access	1,065	1,078
Total DTE Electric Sales and Deliveries	10,572	10,730

Fuel and purchased power — utility expense increased $100 million in the three months ended March 31, 2026. The increase was due to the following:

	Three Months
	(In millions)
Gas - higher consumption and prices	$	109
Purchased power - higher prices and higher volumes primarily due to lower generation	31
Higher transmission expenses	10
Coal - lower consumption and prices	(47)
Other	(3)
	$	100

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Fuel and purchased power — non-utility expense increased $13 million in the three months ended March 31, 2026. The increase was primarily due to the Electric segment acquisition of non-utility assets in the third quarter of 2025.

Operation and maintenance expense increased $52 million in the three months ended March 31, 2026. The increase was primarily due to higher plant generation expense of $21 million, higher distribution operations expense of $18 million, higher benefits and other compensation expense of $5 million, higher RPS expense of $4 million, and higher corporate support costs of $4 million.

Depreciation and amortization expense increased $27 million in the three months ended March 31, 2026. The increase was primarily due to higher depreciable base, including the 15-year amortization of the undepreciated Monroe plant balance which began in February 2025.

Taxes other than income increased $9 million in the three months ended March 31, 2026. The increase was primarily due to higher property taxes.

Income Tax Benefit changed $13 million in the three months ended March 31, 2026. The change was primarily due to higher investment tax credits in 2026, partially offset by higher earnings.

Outlook — DTE Electric will continue to move forward in its efforts to achieve operational excellence, sustain strong cash flows, and earn its authorized return on equity. DTE Electric expects that planned significant capital investments will result in earnings growth. DTE Electric will maintain a strong focus on customers by increasing reliability and satisfaction while working to keep customer rate increases affordable. Looking forward, additional factors may impact earnings such as weather, the outcome of regulatory proceedings, uncertainty of legislative or regulatory actions regarding environmental compliance, and effects of energy waste reduction programs.

In March 2026, DTE Electric entered into a 1.0 gigawatt data center agreement. Generation and storage requirements related to this agreement are expected to increase capital expenditures by approximately $5.0 billion through 2032 which are incremental to DTE Electric's 5-year capital investment plan in the "Capital Investments" section above. DTE Electric is targeting regulatory approvals to be complete by the latter half of 2026.

DTE Electric filed a rate case with the MPSC on April 28, 2026 requesting an increase in base rates of $474 million based on a projected twelve-month period ending February 29, 2028, and an increase in return on equity from 9.9% to 10.25%. The requested increase in base rates was primarily due to capital investments required to support continued reliability improvements and the ongoing transition to cleaner energy. A final MPSC order in this case is expected in February 2027.

GAS SEGMENT

The Gas segment consists principally of DTE Gas. Gas results and outlook are discussed below:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Revenues — Utility operations	$	932	$	876
Operating Expenses
Cost of gas — utility	378		331
Operation and maintenance	152		156
Depreciation and amortization	58		54
Taxes other than income	38		37
	626		578
Operating Income	306		298
Other (Income) and Deductions	33		29
Income Tax Expense	63		63
Net Income Attributable to DTE Energy Company	$	210	$	206

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Operating Revenues — Utility operations increased $56 million in the three months ended March 31, 2026. Revenues associated with certain mechanisms and surcharges, including recovery of the cost of gas, are offset by related expenses elsewhere in DTE Energy's Consolidated Statements of Operations. The increase was due to the following:

	Three Months
	(In millions)
Gas Cost Recovery	$	47
Midstream storage and transportation revenues	11
Infrastructure recovery mechanism	10
Weather	6
Regulatory mechanism — EWR	(6)
Normalized base sales	(10)
Other	(2)
	$	56

Revenue results are impacted by changes in sales volumes, which are summarized in the table below:

	Three Months Ended March 31,
	2026	2025
	(In Bcf)
Gas Markets
Gas sales	71	71
End-user transportation	52	48
	123	119
Intermediate transportation	152	164
Total	275	283

Cost of gas — utility expense increased $47 million in the three months ended March 31, 2026. The increase was primarily due to higher cost of gas of $38 million and higher sales volumes of $9 million.

Operation and maintenance expense decreased $4 million in the three months ended March 31, 2026. The decrease was primarily due to lower EWR expense of $6 million.

Depreciation and amortization expense increased $4 million in the three months ended March 31, 2026. The increase was primarily due to higher depreciable base.

Other (Income) and Deductions increased $4 million in the three months ended March 31, 2026. The increase was primarily due to higher interest expense.

Outlook — DTE Gas will continue to move forward in its efforts to achieve operational excellence, sustain strong cash flows, and earn its authorized return on equity. DTE Gas expects that planned significant infrastructure capital investments will result in earnings growth. Looking forward, additional factors may impact earnings such as weather and the outcome of regulatory proceedings. DTE Gas expects to continue its efforts to improve productivity and decrease costs while improving customer satisfaction with consideration of customer rate affordability.

DTE Gas filed a rate case with the MPSC on November 13, 2025 requesting a net increase in base rates of $163 million based on a projected twelve-month period ending September 30, 2027, and an increase in return on equity from 9.8% to 10.25%. The net increase is based on a total revenue deficiency of $238 million, net of the IRM roll-in of $75 million. The requested net increase in base rates was primarily due to continued infrastructure investment and increasing operations and maintenance costs needed to ensure the continued safe and reliable delivery of natural gas to customers. A final MPSC order in this case is expected in September 2026.

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DTE VANTAGE SEGMENT

The DTE Vantage segment is comprised primarily of renewable energy projects that sell electricity and pipeline-quality gas and projects that deliver custom energy solutions to industrial, commercial, and institutional customers. DTE Vantage results and outlook are discussed below:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Revenues — Non-utility operations	$	227	$	188
Operating Expenses
Fuel, purchased power, and gas — non-utility	131		97
Operation and maintenance	178		60
Depreciation and amortization	15		15
Taxes other than income	6		5
Asset (gains) losses and impairments, net	—		(1)
	330		176
Operating Income (Loss)	(103)		12
Other (Income) and Deductions	(20)		(19)
Income Taxes
Expense	2		8
Tax credits	(26)		(16)
	(24)		(8)
Net Income (Loss) Attributable to DTE Energy Company	$	(59)	$	39

Operating Revenues — Non-utility operations increased $39 million in the three months ended March 31, 2026. The increase was due to the following:

	Three Months
	(In millions)
Higher demand and prices in the Steel business	$	42
New project in the On-site business	3
Lower sales in the Renewables business	(8)
Other	2
	$	39

Fuel, purchased power, and gas — non-utility expense increased $34 million in the three months ended March 31, 2026. The increase was primarily due to higher demand and prices in the Steel business of $34 million.

Operation and maintenance expense increased $118 million in the three months ended March 31, 2026. The increase was primarily due to additional litigation penalties in the Steel business relating to the EES Coke judgment of $112 million and higher costs in the Renewables business of $5 million.

Income Taxes — Expense decreased $6 million in the three months ended March 31, 2026. The decrease was primarily due to lower earnings, partially offset by the non-deductible portion of the EES Coke judgment.

Income Taxes — Tax credits changed $10 million in the three months ended March 31, 2026. The change was primarily due to higher production tax credits generated in the Renewables business.

Outlook — DTE Vantage will continue to leverage its extensive energy-related operating experience and project management capability to develop additional renewable natural gas projects and other projects that will provide customer specific energy solutions. DTE Vantage is also developing decarbonization opportunities relating to carbon capture and sequestration projects.

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ENERGY TRADING SEGMENT

Energy Trading focuses on physical and financial power, natural gas and environmental marketing and trading, structured transactions, enhancement of returns from its asset portfolio, and optimization of contracted natural gas pipeline transportation and storage positions. Energy Trading also provides natural gas, power, environmental, and related services, which may include the management of associated storage and transportation contracts on the customers' behalf and the supply or purchase of environmental attributes to various customers. Energy Trading results and outlook are discussed below:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Operating Revenues — Non-utility operations	$	2,351	$	2,026
Operating Expenses
Purchased power, gas, and other — non-utility	2,427		1,906
Operation and maintenance	21		29
Depreciation and amortization	1		1
Taxes other than income	3		2
	2,452		1,938
Operating Income (Loss)	(101)		88
Other (Income) and Deductions	3		(1)
Income Tax Expense (Benefit)	(26)		22
Net Income (Loss) Attributable to DTE Energy Company	$	(78)	$	67

Operating Revenues — Non-utility operations increased $325 million in the three months ended March 31, 2026. The following table details changes relative to the comparable prior period:

	Three Months
	(In millions)
Realized gas structured and gas transportation strategies - $635 primarily due to higher gas prices, ($58) settled financial hedges	$	577
Unrealized MTM - ($162) losses compared to $112 gains in the prior period	(274)
Other realized gain (loss)	22
	$	325

Purchased power, gas, and other — non-utility expense increased $521 million in the three months ended March 31, 2026. The following table details changes relative to the comparable prior period:

	Three Months
	(In millions)
Realized gas structured and gas transportation strategies - primarily higher gas prices	$	575
Unrealized MTM - ($25) gains compared to $100 losses in the prior period	(125)
Other realized (gain) loss	71
	$	521

Operation and maintenance expense decreased $8 million in the three months ended March 31, 2026. The decrease was primarily due to lower compensation costs.

Natural gas structured transactions typically involve a physical purchase or sale of natural gas in the future and/or natural gas basis financial instruments which are derivatives and a related non-derivative pipeline transportation contract. These gas structured transactions can result in significant earnings volatility as the derivative components are marked-to-market without revaluing the related non-derivative contracts.

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Operating Income (Loss) changed $189 million for the three months ended March 31, 2026, which includes a $74 million unfavorable change in timing related gains and losses primarily related to gas strategies that will reverse in future periods as the underlying contracts settle. The change also includes a $40 million unfavorable change in timing related gains and losses primarily related to gas strategies that were recognized in previous periods and reversed in the current period as the underlying contracts settled.

Other (Income) and Deductions expense increased $4 million in the three months ended March 31, 2026. The increase was primarily due to higher interest expense.

Outlook — In the near-term, Energy Trading expects market conditions to remain challenging. The profitability of this segment may be impacted by the volatility in commodity prices and the uncertainty of impacts associated with regulatory changes, and changes in operating rules of Regional Transmission Organizations. Significant portions of the Energy Trading portfolio are economically hedged. Most financial instruments, physical power and natural gas contracts, and certain environmental contracts are deemed derivatives; whereas, natural gas and environmental inventory, contracts for pipeline transportation, storage assets, and some environmental contracts are not derivatives. As a result, Energy Trading will experience earnings volatility as derivatives are marked-to-market without revaluing the underlying non-derivative contracts and assets. Energy Trading's strategy is to economically manage the price risk of these underlying non-derivative contracts and assets with futures, forwards, swaps, and options. This results in gains and losses that are recognized in different interim and annual accounting periods.

See also the "Fair Value" section herein and Notes 7 and 8 to the Consolidated Financial Statements, "Fair Value" and "Financial and Other Derivative Instruments," respectively.

CORPORATE AND OTHER

Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds certain investments, including investments supporting regional development and economic growth. The net loss of $44 million for the three months ended March 31, 2026 represents an increase of $54 million from the net income of $10 million in the comparable 2025 period. The increase was primarily due to effective income tax rate adjustments and higher net interest expense, partially offset by lower federal and state income taxes.

Outlook — Corporate and Other will continue to support DTE Energy's goals to achieve long-term earnings growth by managing corporate costs such as interest and tax expense. Corporate and Other will also continue to support DTE Energy in achieving a strong balance sheet, access to capital markets, and implementation of a financing plan that includes interest rate management in order to manage interest costs.

CAPITAL RESOURCES AND LIQUIDITY

Cash Requirements

DTE Energy uses cash to maintain and invest in the electric and natural gas utilities, to grow the non-utility businesses, to retire and pay interest on long-term debt, and to pay dividends. DTE Energy believes it will have sufficient internal and external capital resources to fund anticipated capital and operating requirements. DTE Energy expects that cash from operations in 2026 will be approximately $3.9 billion. DTE Energy anticipates base level utility capital investments, including environmental, renewable, and expenditures for non-utility businesses of approximately $6.8 billion in 2026. DTE Energy plans to seek regulatory approval to include utility capital expenditures in regulatory rate base consistent with prior treatment. Capital spending for growth of existing or new non-utility businesses will depend on the existence of opportunities that meet strict risk-return and value creation criteria.

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Refer below for analysis of cash flows relating to operating, investing, and financing activities, which reflect DTE Energy's change in financial condition. Any significant non-cash items are included in the Supplemental disclosure of non-cash investing and financing activities within the Consolidated Statements of Cash Flows, as applicable.

	Three Months Ended March 31,
	2026		2025
	(In millions)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	$	250	$	88
Net cash from operating activities	906		1,020
Net cash used for investing activities	(1,314)		(968)
Net cash from (used for) financing activities	436		(50)
Net Increase in Cash, Cash Equivalents, and Restricted Cash	28		2
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	278	$	90

Cash from Operating Activities

A majority of DTE Energy's operating cash flows are provided by the electric and natural gas utilities, which are significantly influenced by factors such as weather, electric retail access, regulatory deferrals, regulatory outcomes, economic conditions, changes in working capital, and operating costs.

Net cash from operations decreased by $114 million in 2026. The decrease was primarily due to lower Net income partially offset by an increase in cash related to working capital items.

The change in working capital items in 2026 was primarily due to increases in cash related to Accounts receivable, net, Inventories, Derivative assets and liabilities, and Other current and noncurrent assets and liabilities, partially offset by decreases in cash related to Accounts payable and Regulatory assets and liabilities.

Cash used for Investing Activities

Cash inflows associated with investing activities are primarily generated from the sale of assets, while cash outflows are the result of plant and equipment expenditures and acquisitions. In any given year, DTE Energy looks to realize cash from under-performing or non-strategic assets or matured, fully valued assets.

Capital spending within the utility businesses is primarily to maintain and improve electric generation and the electric and natural gas distribution infrastructure, and to comply with environmental regulations and renewable energy goals.

For the non-utility businesses, cash outflows are primarily driven by capital spending to develop and construct projects for customers through investment in notes receivable and additional capital spending for ongoing maintenance, expansion, and growth. DTE Energy looks to make growth investments that meet strict criteria in terms of strategy, management skills, risks, and returns. All new investments are analyzed for their rates of return and cash payback on a risk adjusted basis. DTE Energy has been disciplined in how it deploys capital and will not make investments unless they meet the criteria. For new business lines, DTE Energy initially invests based on research and analysis. DTE Energy starts with a limited investment, evaluates the results, and either expands or exits the business based on those results. In any given year, the amount of growth capital will be determined by the underlying cash flows of DTE Energy, with a clear understanding of any potential impact on its credit ratings.

Net cash used for investing activities increased by $346 million in 2026 primarily due to higher utility plant and equipment expenditures.

Cash from (used for) Financing Activities

DTE Energy relies on both short-term borrowing and long-term financing as a source of funding for capital requirements not satisfied by its operations.

DTE Energy's strategy is to have a targeted debt portfolio blend of fixed and variable interest rates and maturity. DTE Energy targets balance sheet financial metrics to ensure it is consistent with the objective of a strong investment grade debt rating.

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Net cash from financing activities increased by $486 million in 2026 primarily due to increases in cash related to higher Issuance of long-term debt, net of issuance costs and lower Redemption of long-term debt, partially offset by a decrease in cash related to repayment of Short-term borrowings, net.

Sources of Cash

DTE Energy expects cash flows from operations to increase over the long-term, primarily as a result of growth from the utility and non-utility businesses. Growth in the utilities is expected to be driven primarily by capital spending which will increase the base from which rates are determined. Further, the current tax laws allow for extended tax benefits for renewable technologies, including PTCs and ITCs. DTE Electric expects to continue to monetize these tax credits to generate cash flows in the near-term. DTE Energy expects long-term growth in sales related to vehicle electrification and data center load, but no significant impacts in the near-term. Non-utility growth is expected from additional investments in the DTE Vantage segment, primarily related to renewable energy and custom energy solutions, while expanding into carbon capture and sequestration. DTE Vantage also expects enhanced growth opportunities in decarbonization, including tax credits for renewable natural gas and carbon capture projects.

DTE Energy's utilities may be impacted by the timing of collection or refund of various recovery and tracking mechanisms, as a result of timing of MPSC orders. Energy prices are likely to be a source of volatility with regard to working capital requirements for the foreseeable future. DTE Energy continues its efforts to identify opportunities to improve cash flows through working capital initiatives and maintaining flexibility in the timing and extent of long-term capital projects.

In December 2025, DTE Energy filed a prospectus supplement and executed an Equity Distribution Agreement, pursuant to which DTE Energy may sell, from time to time, up to an aggregate $1.5 billion of its common stock through an ATM program, including an equity forward sales component. As of March 31, 2026, DTE Energy has not issued any shares under the ATM program. During the three months ended March 31, 2026, DTE Energy entered into various forward sale agreements under the ATM for 2.5 million shares at a weighted average forward price of $144.41 as of March 31, 2026, which includes expected sales commissions. For further discussion of the ATM program, see Note 9 to the Consolidated Financial Statements, "Long-Term Financings".

At the discretion of management and depending upon economic and financial market conditions, DTE Energy expects to issue $500 million to $600 million of equity in 2026. DTE Energy anticipates these discretionary equity issuances to be made through the at-the-market equity issuance program and/or contributions to the dividend reinvestment plan and/or employee incentive and benefit plans.

Over the long-term, additional equity issuances of $500 million to $600 million will be needed in 2027 and 2028 to support long-term growth. DTE Energy will continue to evaluate equity needs on an annual basis. DTE Energy currently expects its primary source of long-term financing to be the issuance of debt and is monitoring changes in interest rates and impacts on the cost of borrowing.

Uses of Cash

DTE Energy has $1.5 billion in long-term debt, including securitization bonds and finance leases, maturing within twelve months. Repayment of the debt is expected to be made through internally generated funds, the issuance of short-term and/or long-term debt.

DTE Energy has paid quarterly cash dividends for more than 100 consecutive years and expects to continue paying regular cash dividends in the future, including approximately $1.0 billion in 2026. Any payment of future dividends is subject to approval by the Board of Directors and may depend on DTE Energy's future earnings, capital requirements, and financial condition. Over the long-term, DTE Energy expects continued dividend growth and is targeting a payout ratio consistent with pure-play utility companies.

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Various subsidiaries and equity investees of DTE Energy have entered into derivative and non-derivative contracts which contain ratings triggers and are guaranteed by DTE Energy. These contracts contain provisions which allow the counterparties to require that DTE Energy post cash or letters of credit as collateral in the event that DTE Energy's credit rating is downgraded below investment grade. Certain of these provisions (known as "hard triggers") state specific circumstances under which DTE Energy can be required to post collateral upon the occurrence of a credit downgrade, while other provisions (known as "soft triggers") are not as specific. For contracts with soft triggers, it is difficult to estimate the amount of collateral which may be requested by counterparties and/or which DTE Energy may ultimately be required to post. The amount of such collateral which could be requested fluctuates based on commodity prices (primarily natural gas, power, and environmental) and the provisions and maturities of the underlying transactions. As of March 31, 2026, DTE Energy's contractual obligation to post collateral in the form of cash or letters of credit in the event of a downgrade to below investment grade, under both hard trigger and soft trigger provisions, was $459 million.

Other obligations are further described in the following Combined Notes to the Consolidated Financial Statements:

Note	Title
1	Organization and Basis of Presentation
2	Significant Accounting Policies
8	Financial and Other Derivative Instruments
9	Long-Term Financings
10	Short-Term Credit Arrangements and Borrowings
12	Commitments and Contingencies
13	Retirement Benefits and Trusteed Assets

Also refer to the "Capital Investments" section above regarding DTE Energy's capital strategy and estimated spend over the next five years. For additional information regarding DTE Energy's future cash obligations, including scheduled debt maturities and interest payments, minimum lease payments, and future purchase commitments, refer to DTE Energy's Annual Report on Form 10-K for the year ended December 31, 2025.

Liquidity

DTE Energy has approximately $3.4 billion of available liquidity at March 31, 2026, consisting primarily of cash and cash equivalents and amounts available under unsecured revolving credit agreements.

DTE Energy believes it will have sufficient operating flexibility, cash resources, and funding sources to maintain adequate amounts of liquidity and to meet future operating cash and capital expenditure needs. However, virtually all of DTE Energy's businesses are capital intensive, or require access to capital, and the inability to access adequate capital could adversely impact earnings and cash flows.

NEW ACCOUNTING PRONOUNCEMENTS

See Note 3 to the Consolidated Financial Statements, "New Accounting Pronouncements."

FAIR VALUE

Derivatives are generally recorded at fair value and shown as Derivative assets or liabilities. Contracts DTE Energy typically classifies as derivative instruments include power, natural gas, some environmental contracts, and certain forwards, futures, options and swaps, and foreign currency exchange contracts. Items DTE Energy does not generally account for as derivatives include natural gas and environmental inventory, pipeline transportation contracts, storage assets, and some environmental contracts. See Notes 7 and 8 to the Consolidated Financial Statements, "Fair Value" and "Financial and Other Derivative Instruments," respectively.

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The tables below do not include the expected earnings impact of non-derivative natural gas storage, transportation, certain power contracts, and some environmental contracts which are subject to accrual accounting. Consequently, gains and losses from these positions may not match with the related physical and financial hedging instruments in some reporting periods, resulting in volatility in the Registrants' reported period-by-period earnings; however, the financial impact of the timing differences will reverse at the time of physical delivery and/or settlement.

The Registrants manage their MTM risk on a portfolio basis based upon the delivery period of their contracts and the individual components of the risks within each contract. Accordingly, the Registrants record and manage the energy purchase and sale obligations under their contracts in separate components based on the commodity (e.g. electricity or natural gas), the product (e.g. electricity for delivery during peak or off-peak hours), the delivery location (e.g. by region), the risk profile (e.g. forward or option), and the delivery period (e.g. by month and year).

The Registrants have established a fair value hierarchy 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). For further discussion of the fair value hierarchy, see Note 7 to the Consolidated Financial Statements, "Fair Value."

The following table provides details on changes in DTE Energy's MTM net asset (or liability) position:

	DTE Energy
	(In millions)
MTM at December 31, 2025	$	80
Reclassified to realized upon settlement	(48)
Changes in fair value recorded to income	(91)
Amounts recorded to unrealized income	(139)
Changes in fair value recorded in Regulatory liabilities	(3)
Amounts recorded in other comprehensive income, pre-tax	5
Change in collateral	56
MTM at March 31, 2026	$	(1)

The table below shows the maturity of DTE Energy's MTM positions. The positions from 2029 and beyond principally represent longer tenor gas structured transactions:

Source of Fair Value	2026		2027		2028		2029 and Beyond		Total Fair Value
	(In millions)
Level 1	$	(35)	$	(6)	$	(14)	$	(12)	$	(67)
Level 2	33		54		15		7		109
Level 3	(21)		(57)		(7)		16		(69)
MTM before collateral adjustments	$	(23)	$	(9)	$	(6)	$	11	(27)
Collateral adjustments									26
MTM at March 31, 2026									$	(1)

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Market Price Risk

The Electric and Gas businesses have commodity price risk, primarily related to the purchases of coal, natural gas, uranium, and electricity. However, the Registrants do not bear significant exposure to earnings risk, as such changes are included in the PSCR and GCR regulatory rate-recovery mechanisms. Earnings may be indirectly impacted if PSCR or GCR charges increase such that it impacts the collectability of receivables and increases uncollectible expense. Refer to the Allowance for Doubtful Accounts section below for additional information.

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Changes in the price of natural gas can also impact the valuation of lost and unaccounted for gas, storage sales, and transportation services revenue at the Gas segment. The Gas segment manages its market price risk related to storage sales revenue primarily through the sale of long-term storage contracts. The Registrants are exposed to short-term cash flow or liquidity risk as a result of the time differential between actual cash settlements and regulatory rate recovery.

The DTE Vantage segment is subject to price risk for electricity, natural gas, coal products, and environmental attributes generated from its renewable natural gas investments. DTE Energy manages its exposure to commodity price risk through the use of long-term contracts and hedging instruments, when available.

DTE Energy's Energy Trading business segment has exposure to electricity, natural gas, environmental, crude oil, heating oil, and foreign currency exchange price fluctuations. These risks are managed by the energy marketing and trading operations through the use of forward energy, capacity, storage, options, and futures contracts, within predetermined risk parameters.

Credit Risk

Allowance for Doubtful Accounts and Notes Receivable

The Registrants regularly review contingent matters, existing and future economic conditions, customer trends and other factors relating to customers and their contracts and record provisions for amounts considered at risk of probable loss in the allowance for doubtful accounts. The Registrants believe their accrued amounts are adequate for probable loss. The Registrants manage this risk by working at the state and federal levels to promote funding programs for low-income customers, providing energy assistance programs and support, and promoting timely customer payments through adherence to MPSC billing practice rules relating to payment arrangements, energy disconnects, and restores.

Trading Activities

DTE Energy is exposed to credit risk through trading activities. Credit risk is the potential loss that may result if the trading counterparties fail to meet their contractual obligations. DTE Energy utilizes both external and internal credit assessments when determining the credit quality of trading counterparties.

The following table displays the credit quality of DTE Energy's trading counterparties as of March 31, 2026:

	Credit Exposure Before Cash Collateral		Cash Collateral		Net Credit Exposure
	(In millions)
Investment Grade(a)
A- and Greater	$	546	$	—	$	546
BBB+ and BBB	387		—		387
BBB-	4		—		4
Total Investment Grade	937		—		937
Non-investment grade(b)	40		—		40
Internally Rated — investment grade(c)	617		(5)		612
Internally Rated — non-investment grade(d)	80		(17)		63
Total	$	1,674	$	(22)	$	1,652

_______________________________________

(a)This category includes counterparties with minimum credit ratings of Baa3 assigned by Moody’s Investors Service (Moody’s) or BBB-assigned by Standard & Poor’s Rating Group, a division of McGraw-Hill Companies, Inc. (Standard & Poor’s). The five largest counterparty exposures, combined, for this category represented 18% of the total gross credit exposure.

(b)This category includes counterparties with credit ratings that are below investment grade. The five largest counterparty exposures, combined, for this category represented 2% of the total gross credit exposure.

(c)This category includes counterparties that have not been rated by Moody’s or Standard & Poor’s but are considered investment grade based on DTE Energy’s evaluation of the counterparty’s creditworthiness. The five largest counterparty exposures, combined, for this category represented 9% of the total gross credit exposure.

(d)This category includes counterparties that have not been rated by Moody’s or Standard & Poor’s and are considered non-investment grade based on DTE Energy’s evaluation of the counterparty’s creditworthiness. The five largest counterparty exposures, combined, for this category represented 3% of the total gross credit exposure.

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Other

The Registrants engage in business with customers that are non-investment grade. The Registrants closely monitor the credit ratings of these customers and, when deemed necessary and permitted under the tariffs, request collateral or guarantees from such customers to secure their obligations.

Interest Rate Risk

DTE Energy is subject to interest rate risk in connection with the issuance of debt. In order to manage interest costs, DTE Energy may use treasury locks and interest rate swap agreements. DTE Energy's exposure to interest rate risk arises primarily from changes in U.S. Treasury rates, commercial paper rates, credit spreads, and SOFR. As of March 31, 2026, DTE Energy had no floating rate debt.

Foreign Currency Exchange Risk

DTE Energy has foreign currency exchange risk arising from market price fluctuations associated with fixed priced contracts. These contracts are denominated in Canadian dollars and are primarily for the purchase and sale of natural gas and power, as well as for long-term transportation capacity. To limit DTE Energy's exposure to foreign currency exchange fluctuations, DTE Energy has entered into a series of foreign currency exchange forward contracts through December 2032.

Summary of Sensitivity Analyses

Sensitivity analyses were performed on the fair values of commodity contracts for DTE Energy and long-term debt obligations for the Registrants. The commodity contracts listed below principally relate to energy marketing and trading activities. The sensitivity analyses involved increasing and decreasing forward prices and rates at March 31, 2026 and 2025 by a hypothetical 10% and calculating the resulting change in the fair values. The hypothetical losses related to long-term debt would be realized only if DTE Energy transferred all of its fixed-rate long-term debt to other creditors.

The results of the sensitivity analyses:

	Assuming a 10% Increase in Prices/Rates				Assuming a 10% Decrease in Prices/Rates
	As of March 31,				As of March 31,
Activity	2026		2025		2026		2025		Change in the Fair Value of
	(In millions)
Environmental contracts	$	(4)	$	(8)	$	4	$	8	Commodity contracts
Gas contracts	$	18	$	48	$	(18)	$	(48)	Commodity contracts
Power contracts	$	8	$	(3)	$	(8)	$	3	Commodity contracts
Interest rate risk — DTE Energy	$	(981)	$	(789)	$	1,053	$	845	Long-term debt
Interest rate risk — DTE Electric	$	(623)	$	(484)	$	681	$	526	Long-term debt

For further discussion of market risk, see Note 8 to the Consolidated Financial Statements, "Financial and Other Derivative Instruments."

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Item 4. Controls and Procedures

DTE Energy

(a) Evaluation of disclosure controls and procedures

Management of DTE Energy carried out an evaluation, under the supervision and with the participation of DTE Energy's Chief Executive Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of the design and operation of DTE Energy's disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) as of March 31, 2026, which is the end of the period covered by this report. Based on this evaluation, DTE Energy's CEO and CFO have concluded that such disclosure controls and procedures are effective in providing reasonable assurance that information required to be disclosed by DTE Energy in reports that it files or submits under the Exchange Act (i) is recorded, processed, summarized, and reported within the time periods specified in the U.S. Securities and Exchange Commission's rules and forms and (ii) is accumulated and communicated to DTE Energy's management, including its CEO and CFO, as appropriate to allow timely decisions regarding required disclosure. Due to the inherent limitations in the effectiveness of any disclosure controls and procedures, management cannot provide absolute assurance that the objectives of its disclosure controls and procedures will be attained.

(b) Changes in internal control over financial reporting

There have been no changes in DTE Energy's internal control over financial reporting during the quarter ended March 31, 2026 that have materially affected, or are reasonably likely to materially affect, DTE Energy's internal control over financial reporting.

DTE Electric

(a) Evaluation of disclosure controls and procedures

Management of DTE Electric carried out an evaluation, under the supervision and with the participation of DTE Electric's Chief Executive Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of the design and operation of DTE Electric's disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) as of March 31, 2026, which is the end of the period covered by this report. Based on this evaluation, DTE Electric's CEO and CFO have concluded that such disclosure controls and procedures are effective in providing reasonable assurance that information required to be disclosed by DTE Electric in reports that it files or submits under the Exchange Act (i) is recorded, processed, summarized, and reported within the time periods specified in the U.S. Securities and Exchange Commission's rules and forms and (ii) is accumulated and communicated to DTE Electric's management, including its CEO and CFO, as appropriate to allow timely decisions regarding required disclosure. Due to the inherent limitations in the effectiveness of any disclosure controls and procedures, management cannot provide absolute assurance that the objectives of its disclosure controls and procedures will be attained.

(b) Changes in internal control over financial reporting

There have been no changes in DTE Electric's internal control over financial reporting during the quarter ended March 31, 2026 that have materially affected, or are reasonably likely to materially affect, DTE Electric's internal control over financial reporting.

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Part II — Other Information

Item 1. Legal Proceedings

For information on legal proceedings and matters related to the Registrants, see Notes 5 and 12 to the Consolidated Financial Statements, "Regulatory Matters" and "Commitments and Contingencies," respectively.

For environmental proceedings in which the government is a party, the Registrants have included disclosures if any sanctions of $1 million or greater are expected.

Item 1A. Risk Factors

There are various risks associated with the operations of the Registrants' businesses. To provide a framework to understand the operating environment of the Registrants, a brief explanation of the more significant risks associated with the Registrants' businesses is provided in Part 1, Item 1A. Risk Factors in DTE Energy's and DTE Electric's combined 2025 Annual Report on Form 10-K. Although the Registrants have tried to identify and discuss key risk factors, others could emerge in the future.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of DTE Energy Equity Securities by the Issuer and Affiliated Purchasers

The following table provides information about DTE Energy's purchases of equity securities that are registered by DTE Energy pursuant to Section 12 of the Exchange Act of 1934 for the quarter ended March 31, 2026:

	Number of Shares Purchased(a)	Average Price Paid per Share(a)		Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Average Price Paid per Share	Maximum Dollar Value that May Yet Be Purchased Under the Plans or Programs
01/01/2026 — 01/31/2026	8,025	$	124.62	—	—	—
02/01/2026 — 02/28/2026	27,041	$	135.80	—	—	—
03/01/2026 — 03/31/2026	6,748	$	120.75	—	—	—
Total	41,814			—

_______________________________________

(a)Primarily represents shares of DTE Energy common stock withheld to satisfy income tax obligations upon the vesting of restricted stock based on the market price at the vesting date.

Item 5. Other Information

c.During the quarter ended March 31, 2026, no DTE Energy directors or officers adopted or terminated any Rule 10b5-1 trading arrangements or non-Rule 10b5-1 trading arrangements.

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Item 6. Exhibits

Exhibit Number	Description	DTE Energy	DTE Electric
	(i) Exhibits filed herewith:
4.1	Supplemental Indenture dated as of February 1, 2026, to the Mortgage and Deed of Trust dated as of October 1, 1924, between DTE Electric Company and The Bank of New York Mellon Trust Company, N.A., as trustee (2026 Series A and B)	X	X
10.1	Amended and Restated Primary Supply Agreement dated March 12, 2026 between DTE Electric and Google LLC (Portions of this exhibit, indicated by asterisks, have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K, which portions will be furnished to the SEC upon request.)	X	X
10.2	Clean Capacity Accelerator Agreement dated March 12, 2026 between DTE Electric and Google LLC (Portions of this exhibit, indicated by asterisks, have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K, which portions will be furnished to the SEC upon request.)	X	X
31.1	Chief Executive Officer Section 302 Form 10-Q Certification of Periodic Report	X
31.2	Chief Financial Officer Section 302 Form 10-Q Certification of Periodic Report	X
31.3	Chief Executive Officer Section 302 Form 10-Q Certification of Periodic Report		X
31.4	Chief Financial Officer Section 302 Form 10-Q Certification of Periodic Report		X
101.INS	XBRL Instance Document - The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.	X	X
101.SCH	XBRL Taxonomy Extension Schema	X	X
101.CAL	XBRL Taxonomy Extension Calculation Linkbase	X	X
101.DEF	XBRL Taxonomy Extension Definition Database	X	X
101.LAB	XBRL Taxonomy Extension Label Linkbase	X	X
101.PRE	XBRL Taxonomy Extension Presentation Linkbase	X	X
	(ii) Exhibits furnished herewith:
32.1	Chief Executive Officer Section 906 Form 10-Q Certification of Periodic Report	X
32.2	Chief Financial Officer Section 906 Form 10-Q Certification of Periodic Report	X
32.3	Chief Executive Officer Section 906 Form 10-Q Certification of Periodic Report		X
32.4	Chief Financial Officer Section 906 Form 10-Q Certification of Periodic Report		X

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized. The signature for each undersigned Registrant shall be deemed to relate only to matters having reference to such Registrant and any subsidiaries thereof.

Date:	April 30, 2026
			DTE ENERGY COMPANY
		By:	/S/ TRACY J. MYRICK
			Tracy J. Myrick Chief Accounting Officer
			(Duly Authorized Officer)
			DTE ELECTRIC COMPANY
		By:	/S/ TRACY J. MYRICK
			Tracy J. Myrick Chief Accounting Officer
			(Duly Authorized Officer)

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