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 ~~September 30, 2023~~March 31, 2024

☐ 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 48226-1279

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 Electric Company
(DTE Electric)

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

☒

☐

DTE Electric Company (DTE Electric)

Yes

☒

☐

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

☒

☐

DTE Electric

Yes

☒

☐

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

☐

☒

DTE Electric

Yes

☐

☒

Number of shares of Common Stock outstanding at ~~September 30, 2023:~~March 31, 2024:

Registrant

Description

DTE Energy

Common Stock, without par value

~~206,258,727~~206,937,244

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~~Revenue	24
	Note 4 — ~~Revenue~~Regulatory Matters	2526
	Note 5 — ~~Regulatory Matters~~Earnings Per Share	26
	Note 6 — Fair Value	27
	Note ~~6 — Earnings Per Share~~	297
	~~Note 7 — Fair Value~~	30
	~~Note 8~~ — Financial and Other Derivative Instruments	3734
	Note 9 8 — Long-Term Debt	4339
	Note 10 9 — Short-Term Credit Arrangements and Borrowings	4439
	Note 111 0 — Leases	4540
	Note 121 1 — Commitments and Contingencies	4641
	Note 131 2 — Retirement Benefits and Trusteed Assets	5146
	Note 141 3 — Segment and Related Information	5347



Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	5549
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	6962
Item 4.	Controls and Procedures	7265
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	7366
Item 1A.	Risk Factors	7366
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	7366
Item 5.	Insider Trading Arrangements and Policies	7366
Item 6.	Exhibits	7467
	Signatures	7568

Table of Contents

DEFINITIONS




AFUDC						Allowance for Funds Used During Construction

ASU						Accounting Standards Update issued by the FASB



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

~~COVID-19~~						~~Coronavirus disease of 2019~~

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 ~~certain~~ qualified costs ~~authorized by~~related to the ~~MPSC~~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

~~Equity units~~						~~DTE Energy's 2019 equity units issued in November 2019, which were used to finance the former Gas Storage and Pipelines segment acquisition on December 4, 2019~~

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 (Midcontinent Independent System Operation, Inc.), generally resulting from excess generation compared to customer demand

MGP						Manufactured Gas Plant

MPSC						Michigan Public Service Commission

MTM						Mark-to-market

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DEFINITIONS

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

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%

TRM

A Transition Reconciliation Mechanism authorized by the MPSC that allows DTE Electric to recover through rates the deferred net incremental revenue requirement associated with the transition of customers from the city of Detroit's Public Lighting Department to DTE Electric's distribution system

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

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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 ~~2022~~2023 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 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;

Table of Contents

•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 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 ~~plant~~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 ~~net zero emissions goals;~~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

Table of Contents

DTE Energy Company

Consolidated Statements of Operations (Unaudited)


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions, except per share amounts)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions, except per share amounts)						(In millions, except per share amounts)
Operating Revenues	Operating Revenues
Utility operations	Utility operations	$	1,827	$	2,053		$	5,504	$	6,196
Utility operations
Utility operations
Non-utility operations	Non-utility operations	1,061		3,198			3,847		8,556
		2,888		5,251			9,351		14,752
						3,240
Operating Expenses	Operating Expenses
Fuel, purchased power, and gas — utility
Fuel, purchased power, and gas — utility
Fuel, purchased power, and gas — utility	Fuel, purchased power, and gas — utility	435		594			1,364		1,901
Fuel, purchased power, gas, and other — non-utility	Fuel, purchased power, gas, and other — non-utility	864		3,023			3,226		8,324
Operation and maintenance	Operation and maintenance	545		608			1,650		1,803
Depreciation and amortization	Depreciation and amortization	404		369			1,185		1,093
Taxes other than income	Taxes other than income	114		111			350		349
Asset (gains) losses and impairments, net	Asset (gains) losses and impairments, net	(12)		1			(11)		(4)
		2,350		4,706			7,764		13,466
						2,723
Operating Income	Operating Income	538		545			1,587		1,286

Other (Income) and Deductions	Other (Income) and Deductions
Other (Income) and Deductions
Other (Income) and Deductions
Interest expense
Interest expense
Interest expense	Interest expense	200		171			583		486
Interest income	Interest income	(15)		(10)			(45)		(26)
Non-operating retirement benefits, net	Non-operating retirement benefits, net	1		(5)			9		(13)

Other income	Other income	(13)		(16)			(70)		(35)
Other income
Other income
Other expenses	Other expenses	11		12			26		56
		184		152			503		468
						183
Income Before Income Taxes	Income Before Income Taxes	354		393			1,084		818

Income Tax Expense
Income Tax Expense
Income Tax Expense	Income Tax Expense	22		6			106		—

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	332	$	387		$	978	$	818

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

Basic Earnings per Common Share
Basic Earnings per Common Share
Basic Earnings per Common Share	Basic Earnings per Common Share

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	1.61	$	2.00		$	4.74	$	4.22

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

Diluted Earnings per Common Share
Diluted Earnings per Common Share
Diluted Earnings per Common Share	Diluted Earnings per Common Share

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	1.61	$	1.99		$	4.74	$	4.21

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

Weighted Average Common Shares Outstanding
Weighted Average Common Shares Outstanding
Weighted Average Common Shares Outstanding	Weighted Average Common Shares Outstanding
Basic	Basic	206		193			206		193
Basic
Basic
Diluted	Diluted	206		194			206		194

See Combined Notes to Consolidated Financial Statements (Unaudited)

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DTE Energy Company

Consolidated Statements of Comprehensive Income (Unaudited)


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Net Income	Net Income	$	332	$	387		$	978	$	818

Other comprehensive income (loss), net of tax:	Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $—, $—, $1, and $2, respectively		1		2			2		7
Net unrealized gains on derivatives, net of taxes of $4, $1, $5, and $2, respectively		15		4			17		7
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $— for both periods
Benefit obligations, net of taxes of $— for both periods
Benefit obligations, net of taxes of $— for both periods
Net unrealized gains (losses) on derivatives, net of taxes of $8, and $(1), respectively

Foreign currency translation	Foreign currency translation	(3)		—			(1)		—
Other comprehensive income		13		6			18		14
Foreign currency translation
Foreign currency translation
Other comprehensive income (loss)

Comprehensive Income Attributable to DTE Energy Company	Comprehensive Income Attributable to DTE Energy Company	$	345	$	393		$	996	$	832

Comprehensive Income Attributable to DTE Energy Company

Comprehensive Income Attributable to DTE Energy Company

See Combined Notes to Consolidated Financial Statements (Unaudited)

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DTE Energy Company

Consolidated Statements of Financial Position (Unaudited)


		September 30,		December 31,
		2023		2022
		(In millions)
	March 31,						March 31,		December 31,
	2024						2024		2023
	(In millions)							(In millions)
ASSETS	ASSETS					ASSETS
Current Assets	Current Assets
Cash and cash equivalents	Cash and cash equivalents	$	36	$	33
Cash and cash equivalents
Cash and cash equivalents
Restricted cash	Restricted cash	30		10
Accounts receivable (less allowance for doubtful accounts of $76 and $79, respectively)
Accounts receivable (less allowance for doubtful accounts of $69 and $63, respectively)
Customer
Customer
Customer	Customer	1,393		2,038
Other	Other	173		144
Inventories	Inventories
Fuel and gas	Fuel and gas	463		433
Fuel and gas
Fuel and gas
Materials, supplies, and other	Materials, supplies, and other	647		509
Derivative assets	Derivative assets	228		328
Regulatory assets	Regulatory assets	135		450
Prepaid property tax		180		76

Current investments
Current investments
Current investments
Other	Other	135		159

		3,420		4,180
		3,752
		3,752
		3,752
Investments	Investments
Nuclear decommissioning trust funds	Nuclear decommissioning trust funds	1,913		1,825
Nuclear decommissioning trust funds
Nuclear decommissioning trust funds
Investments in equity method investees	Investments in equity method investees	180		165
Other		157		165
		2,250		2,155
Other long-term investments
	2,454
Property	Property
Property, plant, and equipment	Property, plant, and equipment	36,397		39,346
Property, plant, and equipment
Property, plant, and equipment
Accumulated depreciation and amortization	Accumulated depreciation and amortization	(8,869)		(10,579)
		27,528		28,767
	28,585
Other Assets	Other Assets
Goodwill
Goodwill
Goodwill	Goodwill	1,993		1,993
Regulatory assets	Regulatory assets	6,715		3,886
Securitized regulatory assets	Securitized regulatory assets	178		206
Intangible assets	Intangible assets	159		166
Notes receivable	Notes receivable	400		331
Derivative assets	Derivative assets	81		105
Prepaid postretirement costs	Prepaid postretirement costs	616		571
Operating lease right-of-use assets	Operating lease right-of-use assets	137		89
Other	Other	253		234

		10,532		7,581
		11,111
		11,111
		11,111
Total Assets	Total Assets	$	43,730	$	42,683

See Combined Notes to Consolidated Financial Statements (Unaudited)

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DTE Energy Company

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


		September 30,		December 31,
		2023		2022
		(In millions, except shares)
	March 31,						March 31,		December 31,
	2024						2024		2023
	(In millions, except shares)							(In millions, except shares)
LIABILITIES AND EQUITY	LIABILITIES AND EQUITY					LIABILITIES AND EQUITY
Current Liabilities	Current Liabilities
Accounts payable
Accounts payable
Accounts payable	Accounts payable	$	1,135	$	1,604
Accrued interest	Accrued interest	213		154
Dividends payable	Dividends payable	196		196
Short-term borrowings	Short-term borrowings	1,217		1,162

Current portion long-term debt, including securitization bonds and finance leases	Current portion long-term debt, including securitization bonds and finance leases	594		1,124
Current portion long-term debt, including securitization bonds and finance leases
Current portion long-term debt, including securitization bonds and finance leases
Derivative liabilities	Derivative liabilities	145		342

Gas inventory equalization
Regulatory liabilities	Regulatory liabilities	52		34
Operating lease liabilities	Operating lease liabilities	18		13

Other	Other	475		544
Other
Other

		4,045		5,173
		4,975
		4,975
		4,975
Long-Term Debt (net of current portion)	Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other
Mortgage bonds, notes, and other
Mortgage bonds, notes, and other	Mortgage bonds, notes, and other	17,497		15,807
Securitization bonds	Securitization bonds	153		172
Junior subordinated debentures	Junior subordinated debentures	883		883
Finance lease liabilities	Finance lease liabilities	9		11
		18,542		16,873
	19,248
Other Liabilities	Other Liabilities					Other Liabilities
Deferred income taxes	Deferred income taxes	2,575		2,394
Regulatory liabilities	Regulatory liabilities	2,597		2,673
Asset retirement obligations	Asset retirement obligations	3,589		3,460
Unamortized investment tax credit	Unamortized investment tax credit	180		182
Derivative liabilities	Derivative liabilities	154		315
Accrued pension liability	Accrued pension liability	319		378
Accrued postretirement liability	Accrued postretirement liability	288		287
Nuclear decommissioning	Nuclear decommissioning	299		282
Operating lease liabilities	Operating lease liabilities	112		68
Other	Other	176		197

		10,501
		10,501
		10,501
Commitments and Contingencies (Notes 4 and 11)
		10,289		10,236
Commitments and Contingencies (Notes 5 and 12)


Equity	Equity
Common stock (No par value, 400,000,000 shares authorized, and 206,258,727 and 205,632,393 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively)		6,697		6,651
Common stock (No par value, 400,000,000 shares authorized, and 206,937,244 and 206,357,070 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively)
Common stock (No par value, 400,000,000 shares authorized, and 206,937,244 and 206,357,070 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively)
Common stock (No par value, 400,000,000 shares authorized, and 206,937,244 and 206,357,070 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively)
Retained earnings	Retained earnings	4,197		3,808
Accumulated other comprehensive loss	Accumulated other comprehensive loss	(44)		(62)
Total DTE Energy Company Equity	Total DTE Energy Company Equity	10,850		10,397
Noncontrolling interests	Noncontrolling interests	4		4

Total Equity	Total Equity	10,854		10,401
Total Equity
Total Equity
Total Liabilities and Equity	Total Liabilities and Equity	$	43,730	$	42,683

See Combined Notes to Consolidated Financial Statements (Unaudited)

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DTE Energy Company

Consolidated Statements of Cash Flows (Unaudited)


		Nine Months Ended September 30,
		2023		2022
		(In millions)
	Three Months Ended March 31,						Three Months Ended March 31,
	2024					2024		2023
	(In millions)						(In millions)
Operating Activities	Operating Activities
Net Income	Net Income	$	978	$	818
Net Income
Net Income
Adjustments to reconcile Net Income to Net cash from operating activities:	Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization
Depreciation and amortization
Depreciation and amortization	Depreciation and amortization	1,185		1,093
Nuclear fuel amortization	Nuclear fuel amortization	43		26
Allowance for equity funds used during construction	Allowance for equity funds used during construction	(26)		(20)
Deferred income taxes	Deferred income taxes	119		15
Equity (earnings) losses of equity method investees	Equity (earnings) losses of equity method investees	(7)		15
Dividends from equity method investees	Dividends from equity method investees	3		4

Asset (gains) losses and impairments, net	Asset (gains) losses and impairments, net	(11)		(4)
Asset (gains) losses and impairments, net
Asset (gains) losses and impairments, net
Changes in assets and liabilities:	Changes in assets and liabilities:
Accounts receivable, net
Accounts receivable, net
Accounts receivable, net	Accounts receivable, net	614		(150)
Inventories	Inventories	(170)		(204)
Prepaid postretirement benefit costs	Prepaid postretirement benefit costs	(45)		(60)
Accounts payable	Accounts payable	(438)		228

Gas inventory equalization
Accrued pension liability	Accrued pension liability	(59)		(71)
Accrued postretirement liability	Accrued postretirement liability	1		(8)
Derivative assets and liabilities	Derivative assets and liabilities	(234)		77
Regulatory assets and liabilities	Regulatory assets and liabilities	509		(552)
Other current and noncurrent assets and liabilities	Other current and noncurrent assets and liabilities	(87)		205
Net cash from operating activities	Net cash from operating activities	2,375		1,412
Investing Activities	Investing Activities
Plant and equipment expenditures — utility	Plant and equipment expenditures — utility	(2,772)		(2,342)
Plant and equipment expenditures — utility
Plant and equipment expenditures — utility
Plant and equipment expenditures — non-utility	Plant and equipment expenditures — non-utility	(41)		(55)

Proceeds from sale of nuclear decommissioning trust fund assets

Proceeds from sale of nuclear decommissioning trust fund assets

Proceeds from sale of nuclear decommissioning trust fund assets	Proceeds from sale of nuclear decommissioning trust fund assets	527		707
Investment in nuclear decommissioning trust funds	Investment in nuclear decommissioning trust funds	(524)		(710)
Distributions from equity method investees	Distributions from equity method investees	16		11
Contributions to equity method investees	Contributions to equity method investees	(27)		(12)
Notes receivable	Notes receivable	(56)		(13)
Investment in time deposit
Other	Other	(64)		(39)
Net cash used for investing activities	Net cash used for investing activities	(2,941)		(2,453)
Financing Activities	Financing Activities
Issuance of long-term debt, net of discount and issuance costs
Issuance of long-term debt, net of discount and issuance costs
Issuance of long-term debt, net of discount and issuance costs	Issuance of long-term debt, net of discount and issuance costs	2,278		1,771
Redemption of long-term debt	Redemption of long-term debt	(1,146)		(316)

Short-term borrowings, net	Short-term borrowings, net	55		236

Repurchase of common stock		—		(55)
Short-term borrowings, net

Short-term borrowings, net

Dividends paid on common stock	Dividends paid on common stock	(564)		(514)

Dividends paid on common stock

Dividends paid on common stock

Other

Other

Other	Other	(34)		(65)
Net cash from financing activities	Net cash from financing activities	589		1,057
Net Increase in Cash, Cash Equivalents, and Restricted Cash	Net Increase in Cash, Cash Equivalents, and Restricted Cash	23		16
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	43		35
Cash, Cash Equivalents, and Restricted Cash at End of Period	Cash, Cash Equivalents, and Restricted Cash at End of Period	$	66	$	51

Supplemental disclosure of non-cash investing and financing activities	Supplemental disclosure of non-cash investing and financing activities
Supplemental disclosure of non-cash investing and financing activities
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable
Plant and equipment expenditures in accounts payable
Plant and equipment expenditures in accounts payable	Plant and equipment expenditures in accounts payable	$	401	$	331

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Energy Company

Consolidated Statements of Changes in Equity (Unaudited)


					Retained Earnings
		Common Stock
		Common Stock
		Common Stock
		Shares
		Shares
		Shares																								Amount		Total
	(Dollars in millions, shares in thousands)																										(Dollars in millions, shares in thousands)
Balance, December 31, 2023
Net Income
Dividends declared on common stock ($1.02 per Common Share)
Issuance of common stock

Other comprehensive income, net of tax

Other comprehensive income, net of tax

Other comprehensive income, net of tax
Stock-based compensation and other
Balance, March 31, 2024

							Retained Earnings					Accumulated Other Comprehensive Income (Loss)					Noncontrolling Interests
		Common Stock
		Shares	Amount												Total
		(Dollars in millions, shares in thousands)
Balance, December 31, 2022		205,632	$	6,651					$	3,808							$	(62)			$	4		$	10,401
Net Income		—	—			445								—					—				445
Dividends declared on common stock ($0.95 per Common Share)		—	—			(196)					—					—				(196)
Issuance of common stock		76	9			—					—					—				9

Other comprehensive loss, net of tax		—	—			—					(3)					—				(3)
Stock-based compensation and other		401	(8)			(2)					—					—				(10)
Balance, March 31, 2023		206,109	$	6,652		$		4,055					$	(65)				$	4			$	10,646
Net Income		—	—			201					—					—				201
Dividends declared on common stock ($1.91 per Common Share)		—	—			(393)					—					—				(393)
Issuance of common stock		76	8			—					—					—				8

Other comprehensive income, net of tax		—	—			—					8					—				8
Stock-based compensation and other		(9)	16			(1)					—					—				15
Balance, June 30, 2023		206,176	$	6,676		$	3,862				$	(57)				$	4			$	10,485
Net Income		—	—			332					—					—				332

Issuance of common stock		75	9			—					—					—				9

Other comprehensive income, net of tax		—	—			—					13					—				13

Stock-based compensation and other		8	12			3					—					—				15
Balance, September 30, 2023		206,259	$	6,697		$	4,197				$	(44)				$	4			$	10,854

Retained Earnings Accumulated Other Comprehensive Income (Loss) Noncontrolling Interests
Common Stock
Shares Amount Total
(Dollars in millions, shares in thousands)
Balance, December 31, 2021 193,748 $ 5,379 $ 3,438 $ (112) $ 8 $ 8,713
Net Income — — 394 — — 394
Dividends declared on common stock ($0.89 per Common Share) — — (171) — — (171)
Repurchase of common stock (465) (55) — — — (55)
Other comprehensive income, net of tax — — — 3 — 3
Stock-based compensation, net distributions to noncontrolling interests, and other 456 (14) 1 — (4) (17)
Balance, March 31, 2022 193,739 $ 5,310 $ 3,662 $ (109) $ 4 $ 8,867
Net Income — — 37 — — 37
Dividends declared on common stock ($1.77 per Common Share) — — (343) — — (343)
Other comprehensive income, net of tax — — — 5 — 5
Stock-based compensation, net distributions to noncontrolling interests, and other (3) 13 (1) — 1 13
Balance, June 30, 2022 193,736 $ 5,323 $ 3,355 $ (104) $ 5 $ 8,579
Net Income — — 387 — — 387
Other comprehensive income, net of tax — — — 6 — 6
Stock-based compensation, net contributions from noncontrolling interests, and other 6 14 (1) — 1 14
Balance, September 30, 2022 193,742 $ 5,337 $ 3,741 $ (98) $ 6 $ 8,986


				Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests
	Common Stock
	Shares	Amount								Total
	(Dollars in millions, shares in thousands)
Balance, December 31, 2022	205,632	$	6,651	$	3,808	$	(62)	$	4	$	10,401

Net Income	—	—		445		—		—		445
Dividends declared on common stock ($0.95 per Common Share)	—	—		(196)		—		—		(196)
Issuance of common stock	76	9		—		—		—		9


Other comprehensive loss, net of tax	—	—		—		(3)		—		(3)
Stock-based compensation and other	401	(8)		(2)		—		—		(10)
Balance, March 31, 2023	206,109	$	6,652	$	4,055	$	(65)	$	4	$	10,646

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

Consolidated Statements of Operations (Unaudited)


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Operating Revenues — Utility operations	Operating Revenues — Utility operations	$	1,623	$	1,844		$	4,324	$	4,896

Operating Expenses	Operating Expenses
Operating Expenses
Operating Expenses
Fuel and purchased power — utility
Fuel and purchased power — utility
Fuel and purchased power — utility	Fuel and purchased power — utility	440		595			1,120		1,551
Operation and maintenance	Operation and maintenance	371		403			1,099		1,167
Depreciation and amortization	Depreciation and amortization	334		304			979		899
Taxes other than income	Taxes other than income	87		85			255		257

		1,232		1,387			3,453		3,874
							1,184
							1,184
							1,184
Operating Income	Operating Income	391		457			871		1,022

Other (Income) and Deductions	Other (Income) and Deductions
Other (Income) and Deductions
Other (Income) and Deductions
Interest expense
Interest expense
Interest expense	Interest expense	114		93			319		271
Interest income	Interest income	(3)		—			(14)		—
Non-operating retirement benefits, net	Non-operating retirement benefits, net	(1)		(1)			(3)		(2)
Other income	Other income	(16)		(15)			(56)		(46)
Other expenses	Other expenses	9		11			22		37
		103		88			268		260
						94
Income Before Income Taxes	Income Before Income Taxes	288		369			603		762

Income Tax Expense	Income Tax Expense	19		6			55		12
Income Tax Expense
Income Tax Expense

Net Income	Net Income	$	269	$	363		$	548	$	750
Net Income
Net Income

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

Consolidated Statements of Comprehensive Income (Unaudited)


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Net Income	Net Income	$	269	$	363		$	548	$	750

Other comprehensive income	Other comprehensive income	—		—			—		—

Other comprehensive income

Other comprehensive income
Comprehensive Income	Comprehensive Income	$	269	$	363		$	548	$	750

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

Consolidated Statements of Financial Position (Unaudited)


		September 30,		December 31,
		2023		2022
		(In millions)
	March 31,						March 31,		December 31,
	2024						2024		2023
	(In millions)							(In millions)
ASSETS	ASSETS					ASSETS
Current Assets	Current Assets
Cash and cash equivalents	Cash and cash equivalents	$	13	$	15
Cash and cash equivalents
Cash and cash equivalents
Restricted Cash	Restricted Cash	24		9
Accounts receivable (less allowance for doubtful accounts of $46 and $49, respectively)
Accounts receivable (less allowance for doubtful accounts of $40 and $41, respectively)
Customer
Customer
Customer	Customer	794		727
Affiliates	Affiliates	9		8
Other	Other	67		75
Inventories	Inventories
Fuel
Fuel
Fuel	Fuel	199		167
Materials and supplies	Materials and supplies	388		331

Regulatory assets	Regulatory assets	132		421

Regulatory assets

Regulatory assets
Prepaid property tax	Prepaid property tax	133		54
Other	Other	31		44
		1,790		1,851
	1,896
Investments	Investments
Nuclear decommissioning trust funds	Nuclear decommissioning trust funds	1,913		1,825
Nuclear decommissioning trust funds
Nuclear decommissioning trust funds
Other	Other	49		44
		1,962		1,869
	2,194
Property	Property
Property, plant, and equipment	Property, plant, and equipment	27,268		30,591
Property, plant, and equipment
Property, plant, and equipment
Accumulated depreciation and amortization	Accumulated depreciation and amortization	(6,376)		(8,095)
		20,892		22,496
	21,688
Other Assets	Other Assets
Regulatory assets
Regulatory assets
Regulatory assets	Regulatory assets	6,102		3,219
Securitized regulatory assets	Securitized regulatory assets	178		206

Prepaid postretirement costs — affiliates	Prepaid postretirement costs — affiliates	371		345

Prepaid postretirement costs — affiliates

Prepaid postretirement costs — affiliates
Operating lease right-of-use assets	Operating lease right-of-use assets	105		56
Other	Other	218		194
		6,974		4,020
	7,189
Total Assets	Total Assets	$	31,618	$	30,236

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

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


		September 30,		December 31,
		2023		2022
		(In millions, except shares)
	March 31,						March 31,		December 31,
	2024						2024		2023
	(In millions, except shares)							(In millions, except shares)
LIABILITIES AND SHAREHOLDER’S EQUITY	LIABILITIES AND SHAREHOLDER’S EQUITY					LIABILITIES AND SHAREHOLDER’S EQUITY
Current Liabilities	Current Liabilities
Accounts payable	Accounts payable
Accounts payable
Accounts payable
Affiliates
Affiliates
Affiliates	Affiliates	$	44	$	71
Other	Other	591		637
Accrued interest	Accrued interest	120		105

Current portion long-term debt, including securitization bonds and finance leases	Current portion long-term debt, including securitization bonds and finance leases	542		248
Current portion long-term debt, including securitization bonds and finance leases
Current portion long-term debt, including securitization bonds and finance leases
Regulatory liabilities	Regulatory liabilities	49		33
Short-term borrowings	Short-term borrowings
Affiliates		—		27

Other

Other

Other	Other	656		568
Operating lease liabilities	Operating lease liabilities	15		9
Other	Other	165		204
		2,182		1,902
	1,731
Long-Term Debt (net of current portion)	Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other
Mortgage bonds, notes, and other
Mortgage bonds, notes, and other	Mortgage bonds, notes, and other	10,172		9,282
Securitization bonds	Securitization bonds	153		172
Finance lease liabilities	Finance lease liabilities	—		1
		10,325		9,455
	11,517
Other Liabilities	Other Liabilities
Deferred income taxes
Deferred income taxes
Deferred income taxes	Deferred income taxes	3,056		2,946
Regulatory liabilities	Regulatory liabilities	1,729		1,778
Asset retirement obligations	Asset retirement obligations	3,356		3,221
Unamortized investment tax credit	Unamortized investment tax credit	180		182
Nuclear decommissioning	Nuclear decommissioning	299		282
Accrued pension liability — affiliates	Accrued pension liability — affiliates	348		387
Accrued postretirement liability — affiliates	Accrued postretirement liability — affiliates	277		275
Operating lease liabilities	Operating lease liabilities	85		39
Other	Other	69		74
		9,399		9,184
Commitments and Contingencies (Notes 5 and 12)
	9,519
Commitments and Contingencies (Notes 4 and 11)						Commitments and Contingencies (Notes 4 and 11)

Shareholder’s Equity	Shareholder’s Equity
Shareholder’s Equity
Shareholder’s Equity
Common stock ($10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding for both periods)
Common stock ($10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding for both periods)
Common stock ($10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding for both periods)	Common stock ($10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding for both periods)	6,602		6,602
Retained earnings	Retained earnings	3,110		3,093

Total Shareholder’s Equity	Total Shareholder’s Equity	9,712		9,695
Total Shareholder’s Equity
Total Shareholder’s Equity
Total Liabilities and Shareholder’s Equity	Total Liabilities and Shareholder’s Equity	$	31,618	$	30,236

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

Consolidated Statements of Cash Flows (Unaudited)


		Nine Months Ended September 30,
		2023		2022
		(In millions)
	Three Months Ended March 31,						Three Months Ended March 31,
	2024					2024		2023
	(In millions)						(In millions)
Operating Activities	Operating Activities
Net Income	Net Income	$	548	$	750
Net Income
Net Income
Adjustments to reconcile Net Income to Net cash from operating activities:	Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization
Depreciation and amortization
Depreciation and amortization	Depreciation and amortization	979		899
Nuclear fuel amortization	Nuclear fuel amortization	43		26
Allowance for equity funds used during construction	Allowance for equity funds used during construction	(25)		(18)
Deferred income taxes	Deferred income taxes	59		11

Changes in assets and liabilities:	Changes in assets and liabilities:
Changes in assets and liabilities:
Changes in assets and liabilities:
Accounts receivable, net
Accounts receivable, net
Accounts receivable, net	Accounts receivable, net	(57)		(77)
Inventories	Inventories	(89)		(26)
Accounts payable	Accounts payable	(33)		17
Prepaid postretirement benefit costs — affiliates	Prepaid postretirement benefit costs — affiliates	(26)		(37)
Accrued pension liability — affiliates	Accrued pension liability — affiliates	(39)		(40)
Accrued postretirement liability — affiliates	Accrued postretirement liability — affiliates	2		(6)
Regulatory assets and liabilities	Regulatory assets and liabilities	402		(563)
Other current and noncurrent assets and liabilities	Other current and noncurrent assets and liabilities	(183)		166
Net cash from operating activities	Net cash from operating activities	1,581		1,102
Investing Activities	Investing Activities
Plant and equipment expenditures	Plant and equipment expenditures	(2,215)		(1,853)
Plant and equipment expenditures
Plant and equipment expenditures

Proceeds from sale of nuclear decommissioning trust fund assets	Proceeds from sale of nuclear decommissioning trust fund assets	527		707

Proceeds from sale of nuclear decommissioning trust fund assets

Proceeds from sale of nuclear decommissioning trust fund assets
Investment in nuclear decommissioning trust funds	Investment in nuclear decommissioning trust funds	(524)		(710)

Notes receivable and other		(30)		(38)
Notes receivable
Other
Net cash used for investing activities	Net cash used for investing activities	(2,242)		(1,894)
Financing Activities	Financing Activities
Issuance of long-term debt, net of discount and issuance costs	Issuance of long-term debt, net of discount and issuance costs	1,284		1,118
Issuance of long-term debt, net of discount and issuance costs
Issuance of long-term debt, net of discount and issuance costs
Redemption of long-term debt	Redemption of long-term debt	(121)		(316)

Capital contribution by parent company		—		296

Short-term borrowings, net — affiliates

Short-term borrowings, net — affiliates

Short-term borrowings, net — affiliates	Short-term borrowings, net — affiliates	(27)		25
Short-term borrowings, net — other	Short-term borrowings, net — other	88		306
Dividends paid on common stock	Dividends paid on common stock	(531)		(600)
Other	Other	(19)		(15)
Net cash from financing activities	Net cash from financing activities	674		814
Net Increase in Cash, Cash Equivalents, and Restricted Cash	Net Increase in Cash, Cash Equivalents, and Restricted Cash	13		22
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	24		9
Cash, Cash Equivalents, and Restricted Cash at End of Period	Cash, Cash Equivalents, and Restricted Cash at End of Period	$	37	$	31

Supplemental disclosure of non-cash investing and financing activities	Supplemental disclosure of non-cash investing and financing activities
Supplemental disclosure of non-cash investing and financing activities
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	Plant and equipment expenditures in accounts payable	$	295	$	242
Plant and equipment expenditures in accounts payable
Plant and equipment expenditures in accounts payable

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

DTE Electric Company

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


					Additional Paid-in Capital
							Additional Paid-in Capital
									Additional Paid-in Capital
		Common Stock
		Common Stock
		Common Stock
		Shares
		Shares
		Shares																Amount		Total
	(Dollars in millions, shares in thousands)																		(Dollars in millions, shares in thousands)
Balance, December 31, 2023
Net Income
Dividends declared on common stock

Balance, March 31, 2024

Balance, March 31, 2024

Balance, March 31, 2024

					Additional Paid-in Capital								Retained Earnings
		Common Stock
		Shares	Amount								Total
		(Dollars in millions, shares in thousands)
Balance, December 31, 2022		138,632	$	1,386			$	5,216			$	3,093				$	9,695
Net Income		—	—				—				100					100
Dividends declared on common stock		—	—		—				(182)					(182)

Balance, March 31, 2023		138,632	$	1,386	$	5,216			$	3,011				$	9,613
Net Income		—	—		—				179					179
Dividends declared on common stock		—	—		—				(174)					(174)

Balance, June 30, 2023		138,632	$	1,386	$	5,216			$	3,016				$	9,618
Net Income		—	—		—				269					269
Dividends declared on common stock		—	—		—				(175)					(175)

Balance, September 30, 2023		138,632	$	1,386	$	5,216			$	3,110				$	9,712


					Additional Paid-in Capital
							Additional Paid-in Capital
									Additional Paid-in Capital
		Common Stock
		Common Stock
		Common Stock
		Shares
		Shares
		Shares																	Amount		Total
	(Dollars in millions, shares in thousands)																			(Dollars in millions, shares in thousands)
Balance, December 31, 2022

Net Income
Net Income
Net Income
Dividends declared on common stock

Balance, March 31, 2023

Balance, March 31, 2023

Balance, March 31, 2023

					Additional Paid-in Capital								Retained Earnings
		Common Stock
		Shares	Amount								Total
		(Dollars in millions, shares in thousands)
Balance, December 31, 2021		138,632	$	1,386			$	4,616			$	2,901					$	8,903

Net Income		—	—				—				201					201
Dividends declared on common stock		—	—		—				(277)					(277)

Balance, March 31, 2022		138,632	$	1,386	$	4,616			$	2,825				$	8,827

Net Income		—	—		—				186					186
Dividends declared on common stock		—	—		—				(162)					(162)

Balance, June 30, 2022		138,632	$	1,386	$	4,616			$	2,849				$	8,851

Net Income		—	—		—				363					363
Dividends declared on common stock		—	—		—				(161)					(161)

Capital contribution by parent company		—	—		296				—					296
Balance, September 30, 2022		138,632	$	1,386	$	4,912			$	3,051				$	9,349

See Combined Notes to Consolidated Financial Statements (Unaudited)

Table of Contents

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~~Revenue

DTE Energy and DTE Electric

Note 4

~~Revenue~~Regulatory Matters

DTE Energy and DTE Electric

Note 5

~~Regulatory Matters~~Earnings per Share

DTE Energy

Note 6

Fair Value

DTE Energy and DTE Electric

Note 6

~~Earnings per Share~~

~~DTE Energy~~

~~Note~~ 7

~~Fair Value~~Financial and Other Derivative Instruments

DTE Energy and DTE Electric

Note 8

~~Financial and Other Derivative Instruments~~Long-Term Debt

DTE Energy and DTE Electric

Note 9

~~Long-Term Debt~~Short-Term Credit Arrangements and Borrowings

DTE Energy and DTE Electric

Note 10

~~Short-Term Credit Arrangements and Borrowings~~Leases

DTE Energy

Note 11

Commitments and Contingencies

DTE Energy and DTE Electric

Note 11

~~Leases~~

~~DTE Energy~~

~~Note~~ 12

~~Commitments~~Retirement Benefits and ~~Contingencies~~Trusteed Assets

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

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 1.3 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 ~~2022~~2023 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, ~~2023.~~2024.

Table of Contents

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 ~~September 30, 2023,~~March 31, 2024, 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 ~~September 30, 2023,~~March 31, 2024, 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.

~~During 2022,~~ DTE Electric previously financed regulatory assets for ~~previously~~ deferred costs related to ~~the River Rouge~~certain retired generation ~~plant~~plants and its tree trimming surge program through the sale of bonds by a wholly-owned special purpose ~~entity, DTE Securitization.~~entities, DTE Securitization ~~is a VIE.~~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 ~~DTE Securitization,~~these entities, including performing servicing activities such as billing and collecting surcharge revenue. Accordingly, DTE Electric is the primary beneficiary and the DTE Securitization isentities are consolidated by the Registrants. Securitization bond holders have no recourse to the Registrants' assets, except for those held by the DTE ~~Securitization.~~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.~~Securitization entities. These surcharges are remitted to a trustee and are not available to other creditors of the Registrants.

Table of Contents

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, and future funding commitments.~~receivable.

The table below summarizes the major Consolidated Statements of Financial Position items for consolidated VIEs as of ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022.~~2023. 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 ~~VIEs are presented in aggregate~~DTE Securitization entities have been aggregated due to ~~the~~their similar nature ~~of the entities, except for DTE Electric amounts that reflect DTE Securitization~~ and are separately ~~stated.~~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 below.~~table.

During the third quarter 2023, a consolidated VIE of DTE Vantage entered into a contract that restricts certain assets of the VIE to be used only to settle the VIE's obligations. As a result, the assets and liabilities of the VIE, which primarily include receivables and payables recognized in 2023, no longer meet the exclusion criteria above. Accordingly, these assets and liabilities have been added to the DTE Energy amounts in the table below.

Amounts for the Registrants' consolidated VIEs are as follows:


		September 30, 2023				December 31, 2022
		DTE Energy		DTE Electric(a)		DTE Energy		DTE Electric(a)
		(In millions)
	March 31, 2024										March 31, 2024			December 31, 2023
	DTE Energy									DTE Energy		DTE Electric	DTE Energy		DTE Electric
	(In millions)												(In millions)
ASSETS	ASSETS
Cash and cash equivalents
Cash and cash equivalents
Cash and cash equivalents	Cash and cash equivalents	$	11	$	—	$	14	$	—
Restricted cash	Restricted cash	28		23		9		9
Accounts receivable	Accounts receivable	115		2		6		3

Securitized regulatory assets	Securitized regulatory assets	178		178		206		206

Notes receivable		153		—		81		—
Other current and long-term assets		2		—		8		—

Securitized regulatory assets
		$	487	$	203	$	324	$	218

Securitized regulatory assets

Notes receivable(a)
Notes receivable(a)
Notes receivable(a)
Other current and long-term assets
	$

LIABILITIES
LIABILITIES
LIABILITIES	LIABILITIES
Accounts payable	Accounts payable	$	57	$	—	$	3	$	—
Short-term borrowings		—		—		81		—
Accounts payable
Accounts payable
Accrued interest

Securitization bonds(b)	Securitization bonds(b)	193		193		211		211

Securitization bonds(b)

Securitization bonds(b)

Other current and long-term liabilities	Other current and long-term liabilities	18		10		11		9
		$	268	$	203	$	306	$	220
Other current and long-term liabilities
Other current and long-term liabilities
	$

(a)During the first quarter 2024, a consolidated VIE of DTE ~~Electric amounts reflect~~Vantage recorded a significant increase in Notes Receivable, primarily due to a one-time payment of $306 million for investments related to a large industrial project. At March 31, 2024, Notes Receivable includes $10 million reported in Current Assets — Other on DTE ~~Securitization.~~Energy's Consolidated Statements of Financial Position.

(b)Includes ~~$40~~$79 million and ~~$39~~$64 million reported in Current portion of long-term debt on the Registrants' Consolidated Statements of Financial Position for the periods ended ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, respectively.

Amounts for DTE Energy's non-consolidated VIEs are as follows:


		September 30, 2023		December 31, 2022
		(In millions)
	March 31, 2024					March 31, 2024		December 31, 2023
	(In millions)						(In millions)
Investments in equity method investees	Investments in equity method investees	$	125	$	137
Notes receivable	Notes receivable	$	15	$	15
Future funding commitments		$	1	$	2

Table of Contents

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Allowance for equity funds used during construction	Allowance for equity funds used during construction	$	8	$	6		$	26	$	20
Contract services	Contract services	5		7			18		21

Investment income(a)	Investment income(a)	—		—			9		—

Investment income(a)

Investment income(a)
Equity earnings (losses) of equity method investees	Equity earnings (losses) of equity method investees	3		—			7		(15)
Other	Other	(3)		3			10		9
		$	13	$	16		$	70	$	35
						$

(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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Allowance for equity funds used during construction	Allowance for equity funds used during construction	$	8	$	6		$	25	$	18
Contract services	Contract services	6		7			18		21
Investment income(a)	Investment income(a)	—		—			6		—

Other	Other	2		2			7		7
		$	16	$	15		$	56	$	46
Other
Other
						$

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

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 ~~and nine~~ months ended ~~September 30,~~March 31, 2024 and 2023, ~~and 2022,~~ reclassifications out of Accumulated other comprehensive income (loss) were not material.

Table of Contents

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024												2024	2023
DTE Energy	DTE Energy
Statutory federal income tax rate
Statutory federal income tax rate
Statutory federal income tax rate	Statutory federal income tax rate	21.0	%	21.0	%		21.0	%	21.0	%		21.0	%		21.0	%
Increase (decrease) due to:	Increase (decrease) due to:
State and local income taxes, net of federal benefit	State and local income taxes, net of federal benefit	4.8		4.4			4.5		4.5
State and local income taxes, net of federal benefit
State and local income taxes, net of federal benefit
Production tax credits	Production tax credits	(7.8)		(9.1)			(6.4)		(9.4)
TCJA amortization		(4.9)		(13.6)			(4.2)		(14.8)
TCJA regulatory liability amortization
Investment tax credits	Investment tax credits	(3.8)		—			(2.6)		(0.1)
AFUDC equity
Enactment of West Virginia income tax legislation, net of federal benefit	Enactment of West Virginia income tax legislation, net of federal benefit	—		—			(0.6)		—
Other	Other	(3.0)		(1.2)			(1.9)		(1.2)
Effective income tax rate	Effective income tax rate	6.3	%	1.5	%		9.8	%	—	%	Effective income tax rate		6.2	%		10.1	%


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024												2024	2023
DTE Electric	DTE Electric
Statutory federal income tax rate
Statutory federal income tax rate
Statutory federal income tax rate	Statutory federal income tax rate	21.0	%	21.0	%		21.0	%	21.0	%		21.0	%		21.0	%
Increase (decrease) due to:	Increase (decrease) due to:
State and local income taxes, net of federal benefit	State and local income taxes, net of federal benefit	5.7		5.7			5.7		5.7
State and local income taxes, net of federal benefit
State and local income taxes, net of federal benefit
Production tax credits	Production tax credits	(11.1)		(9.5)			(9.4)		(9.2)
TCJA amortization		(6.9)		(14.6)			(5.9)		(15.0)
TCJA regulatory liability amortization
AFUDC equity
Other	Other	(1.9)		(0.9)			(2.2)		(0.9)
Effective income tax rate	Effective income tax rate	6.8	%	1.7	%		9.2	%	1.6	%	Effective income tax rate		9.6	%		14.2	%

DTE Electric had income tax receivables with DTE Energy of $7 million at ~~September 30, 2023, primarily~~March 31, 2024, including $5 million related to federal taxes and $1$2 million related to state taxes, and $7 million at December 31, ~~2022, primarily~~2023 related to ~~state taxes, which~~federal taxes. Amounts are included in Accounts Receivable — Affiliates on the DTE Electric Consolidated Statements of Financial Position.

During the second quarter 2023, DTE Energy and DTE Electric unrecognized tax benefits decreased by $10 million and $13 million, respectively, as a result of an audit settlement related to state exposures. Recognition of these state tax benefits, net of federal benefit, resulted in a reduction of $8 million and $10 million to Income Tax Expense on the respective DTE Energy and DTE Electric Consolidated Statements of Operations for the nine months ended September 30, 2023.

During the third quarter 2023, DTE Energy unrecognized tax benefits decreased by an additional $5 million due to recognition of a federal tax claim. Recognition of this federal tax benefit resulted in a $5 million reduction to Income Tax Expense on the DTE Energy Consolidated Statements of Operations for the three and nine months ended September 30, 2023. As of September 30, 2023, DTE Energy and DTE Electric have no remaining unrecognized tax benefits.

As of December 31, 2022, DTE Energy and DTE Electric had $5 million and $8 million of accrued interest pertaining to income taxes, respectively, included in Accrued Interest on the Consolidated Statements of Financial Position. As a result of the state tax audit settlement noted above, the Registrants have no remaining accrued interest pertaining to income taxes.

Unrecognized Compensation Costs

As of ~~September 30, 2023,~~March 31, 2024, DTE Energy had ~~$77~~$95 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 ~~1.4~~2.0 years.

Allocated Stock-Based Compensation

DTE Electric received an allocation of costs from DTE Energy associated with stock-based compensation of $8 million and $10 million for the three months ended March 31, 2024 and 2023, respectively.

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 also consists of funds held to satisfy contractual obligations related to a large construction project at DTE Vantage. Restricted cash designated for payments within one year is classified as a Current Asset.

Table of Contents

DTE Energy Company — DTE Electric Company

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

~~Allocated Stock-Based Compensation~~

DTE Electric received an allocation of costs from DTE Energy associated with stock-based compensation of $7 million and $9 million for the three months ended September 30, 2023 and 2022, respectively, while such allocation was $27 million and $30 million for the nine months ended September 30, 2023 and 2022, respectively.

~~Cash, Cash Equivalents, and Restricted Cash~~

Cash and cash equivalents include cash on hand, cash in banks, and temporary investments purchased with remaining maturities of three months or less. Restricted cash includes funds held in separate bank accounts and principally consists of amounts at DTE Securitization 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, 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 ~~September 30, 2023.~~March 31, 2024.


		DTE Energy								DTE Electric
		Year of Origination
		2023		2022		2021 and Prior		Total		2023 and Prior
		(In millions)
	DTE Energy													DTE Energy				DTE Electric
	Year of Origination														Year of Origination
	2024											2024	2023	2022 and Prior		Total	2024 and Prior
	(In millions)														(In millions)
Notes receivable	Notes receivable
Internal grade 1
Internal grade 1
Internal grade 1	Internal grade 1	$	14	$	—	$	6	$	20	$	16
Internal grade 2	Internal grade 2	19		85		17		121		—

Total notes receivable(a)	Total notes receivable(a)	$	33	$	85	$	23	$	141	$	16
Total notes receivable(a)
Total notes receivable(a)

Net investment in leases	Net investment in leases

Net investment in leases

Net investment in leases
Internal grade 1
Internal grade 1
Internal grade 1	Internal grade 1	$	—	$	—	$	37	$	37	$	—
Internal grade 2	Internal grade 2	—		65		185		250		—
Total net investment in leases(a)	Total net investment in leases(a)	$	—	$	65	$	222	$	287	$	—

(a)For DTE Energy and DTE Electric, the current portion is included in Current Assets — Other on the respective Consolidated Statements of Financial Position. For DTE Electric, the noncurrent portion is included in Other Assets — Other.

~~Table of Contents~~

~~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 finance lease receivables and loans 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 loans.

Table of Contents

DTE Energy Company — DTE Electric Company

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

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			Total		Trade and other accounts receivable
		(In millions)
Beginning reserve balance, January 1, 2023		$	78	$	1		$	79	$	49
		DTE Energy
		DTE Energy
		DTE Energy											DTE Electric
	Trade accounts receivable										Trade accounts receivable	Other receivables			Total	Trade and other accounts receivable
	(In millions)													(In millions)
Beginning reserve balance, January 1, 2024
Current period provision	Current period provision	44		—			44		28

Write-offs charged against allowance	Write-offs charged against allowance	(78)		—			(78)		(51)
Write-offs charged against allowance
Write-offs charged against allowance
Recoveries of amounts previously written off	Recoveries of amounts previously written off	31		—			31		20
Ending reserve balance, September 30, 2023		$	75	$	1		$	76	$	46
Ending reserve balance, March 31, 2024

DTE Energy DTE Electric
Trade accounts receivable Other receivables Total Trade and other accounts receivable
(In millions)
Beginning reserve balance, January 1, 2022 $ 89 $ 3 $ 92 $ 54
Current period provision 49 — 49 33
Write-offs charged against allowance (105) (2) (107) (66)
Recoveries of amounts previously written off 45 — 45 28
Ending reserve balance, December 31, 2022 $ 78 $ 1 $ 79 $ 49

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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


	DTE Energy				DTE Electric
	Trade accounts receivable		Other receivables			Total		Trade and other accounts receivable
	(In millions)
Beginning reserve balance, January 1, 2023	$	78	$	1		$	79	$	49
Current period provision	52		—			52		36

Write-offs charged against allowance	(112)		—			(112)		(72)
Recoveries of amounts previously written off	44		—			44		28
Ending reserve balance, December 31, 2023	$	62	$	1		$	63	$	41

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
DTE Energy	DTE Energy	$	10	$	12		$	45	$	46
DTE Electric	DTE Electric	$	11	$	12		$	28	$	28

There are no material amounts of past due financing receivables for the Registrants as of ~~September 30, 2023.~~

~~NOTE 3 — NEW ACCOUNTING PRONOUNCEMENTS~~

~~Recently Adopted Pronouncements~~

In March ~~2022, the FASB issued ASU No. 2022-02,~~ ~~Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures.~~ The amendments in this update eliminate the accounting guidance for troubled debt restructurings by creditors that have adopted the Current Expected Credit Loss (“CECL”) model under ASC 326 and enhance the disclosure requirements for loan refinancings and restructurings made with borrowers experiencing financial difficulty. Additionally, the amendments require the disclosure of current period gross write-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Registrants adopted the ASU effective January 1, 2023 using the prospective approach, with no impact on the Registrants' financial position or results of operations. Gross write-offs, if any, will be disclosed in the Financing Receivables section of Note 2 to the Consolidated Financial Statements, "Significant Accounting Policies."

31, 2024.

2423

Table of Contents

DTE Energy Company — DTE Electric Company

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

NOTE 43 — REVENUE

Disaggregation of Revenue

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


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Electric(a)	Electric(a)
Residential
Residential
Residential	Residential	$	861	$	882		$	2,173	$	2,273
Commercial	Commercial	585		541			1,604		1,505
Industrial	Industrial	190		167			545		498
Other(b)	Other(b)	(10)		257			12		631
Total Electric operating revenues	Total Electric operating revenues	$	1,626	$	1,847		$	4,334	$	4,907

Gas	Gas
Gas
Gas
Gas sales
Gas sales
Gas sales	Gas sales	$	119	$	128		$	936	$	955
End User Transportation	End User Transportation	44		42			184		195
Intermediate Transportation	Intermediate Transportation	16		15			63		60
Other(b)	Other(b)	48		45			62		148
Total Gas operating revenues	Total Gas operating revenues	$	227	$	230		$	1,245	$	1,358

Other segment operating revenues	Other segment operating revenues
Other segment operating revenues
Other segment operating revenues
DTE Vantage
DTE Vantage
DTE Vantage	DTE Vantage	$	199	$	227		$	572	$	626
Energy Trading	Energy Trading	$	893	$	3,024		$	3,365	$	8,059

(a)Revenues generally represent those of DTE Electric, except $3$4 million of Other revenues related to DTE Sustainable Generation for both the three months ended ~~September 30, 2023~~March 31, 2024 and ~~2022, and $10 million and $11 million for the nine months ended September 30, 2023 and 2022, respectively.~~2023.

(b)Includes revenue adjustments related to various regulatory mechanisms, including the PSCR at the Electric segment and GCR at the Gas 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,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)

Electric — Other revenues
Electric — Other revenues
Electric — Other revenues	Electric — Other revenues	$	8	$	7		$	18	$	15
Gas — Alternative Revenue Programs	Gas — Alternative Revenue Programs	$	—	$	—		$	4	$	—
Gas — Other revenues	Gas — Other revenues	$	2	$	2		$	7	$	6
DTE Vantage — Leases	DTE Vantage — Leases	$	19	$	24		$	44	$	63
Energy Trading — Derivatives	Energy Trading — Derivatives	$	670	$	2,531		$	2,527	$	6,691

Deferred Revenue

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


	~~DTE Energy~~
	~~(In millions)~~
~~Beginning Balance, January 1, 2023~~	$	94
~~Increases due to cash received or receivable, excluding amounts recognized as revenue during the period~~	~~113~~
~~Revenue recognized that was included in the deferred revenue balance at the beginning of the period~~	~~(42)~~
~~Ending Balance, September 30, 2023~~	$	~~165~~


	Three Months Ended March 31,
	2024		2023
	(In millions)
Beginning Balance, January 1	$	106	$	94
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period	35		27
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(25)		(34)
Ending Balance, March 31	$	116	$	87

2524

Table of Contents

DTE Energy Company — DTE Electric Company

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

~~The deferred~~Deferred revenues atare included in Current Liabilities — Other and Other Liabilities — Other on DTE ~~Energy~~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 associated with 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)
2023		$	95
	DTE Energy			DTE Energy
	(In millions)			(In millions)
2024	2024	68
2025	2025	1
2026	2026	1
2027	2027	—
2028 and thereafter		—
		$	165
2028
2029 and thereafter
	$

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)
2023		$	33	$	2
	DTE Energy					DTE Energy		DTE Electric
	(In millions)						(In millions)
2024	2024	247		8
2025	2025	184		—
2026	2026	99		—
2027	2027	67		—
2028 and thereafter		375		—
		$	1,005	$	10
2028
2029 and thereafter
	$

2625

Table of Contents

DTE Energy Company — DTE Electric Company

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

NOTE 54 — REGULATORY MATTERS

~~Ludington Accounting Application~~2024 Gas Rate Case Filing

~~During April 2022,~~ DTE ~~Electric and Consumers Energy Company (“Consumers”)~~Gas filed a complaint against Toshiba America Energy Systems (“TAES”) and its parent corporation for defective and non-conforming work relating to the overhaul and upgrade of the Ludington Hydroelectric Pumped Storage Plant (“Ludington”). Refer to the ~~Ludington Plant Contract Dispute~~ ~~section of Note 12 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information regarding the complaint and ongoing legal proceedings.~~

DTE Electric and Consumers, joint owners of Ludington, believe that certain costs must be incurred in the near term for repairing and/or replacing defective work performed by TAES in order to ensure the continued safe and reliable operation of the plant. In November 2022, DTE Electric and Consumers filed an accounting applicationrate case with the MPSC ~~for authority~~on January 8, 2024 requesting an increase in base rates of $266 million based on a projected twelve-month period ending September 30, 2025, and an increase in return on equity from 9.9% to ~~defer these~~10.25%. The request reflects a net increase to customer rates of only $160 million, as an existing IRM surcharge of $106 million would be rolled into the new base rates. The requested increase is primarily due to increased investments in plant related to system reliability and pipeline safety and inflationary impacts on operating costs, ~~as a regulatory asset. DTE Electric and Consumers requested the regulatory asset for their respective 49% and 51% shares of these costs, to be~~partially offset by ~~any potential litigation proceeds. The parties also requested that appropriate recovery and ratemaking treatment be granted~~higher sales. A final MPSC order in ~~a future rate~~this case ~~or other proceeding. In May 2023, the MPSC approved the accounting application as requested. Costs incurred and deferred as regulatory assets will be reviewed~~is expected in ~~future rate proceedings for cost recovery.~~November 2024.

~~2023~~2024 Electric Rate Case Filing

DTE Electric filed a rate case with the MPSC on ~~February 10, 2023~~March 28, 2024 requesting an increase in base rates of ~~$622~~$456 million based on a projected twelve-month period ending ~~November 30, 2024,~~December 31, 2025, and an increase in return on equity from 9.9% to ~~10.25%~~10.5%. The requested increase in base rates iswas primarily due to ~~increased~~the capital investments ~~in plant involving generation~~required to support continued reliability improvements and the ~~electric distribution system, as well as related increases~~ongoing transition to ~~depreciation and property tax expenses. These investments will support DTE Energy's goals to reduce carbon emissions and improve power reliability.~~cleaner energy. The requested increase in base rates iswas also due to ~~a projected sales decline~~the increased cost of debt resulting from ~~the level included in current rates~~market dynamics and ~~inflationary impacts on~~increasing operating and ~~interest costs.~~maintenance expenses. A final MPSC order in this case is expected in ~~December 2023.~~

~~2023 Securitization Filing~~

On April 3, 2023, DTE Electric filed an application with the MPSC requesting a financing order to approve the securitization of $496 million of qualified costs related to the net book value of the St. Clair and Trenton Channel generation plants. The filing requested recovery of these qualifying costs from DTE Electric's customers.

The MPSC issued a financing order on June 22, 2023 authorizing DTE Electric to proceed with the issuance of Securitization bonds for qualified costs up to $602 million, increased for the inclusion of deferred income taxes. These costs include up to $594 million for the net book value of the St. Clair and Trenton Channel plants and up to $8 million for other qualified costs. The financing order further authorized customer charges for the timely recovery of debt service costs on the Securitization bonds and other ongoing qualified costs.

On November 1, 2023, DTE Electric closed on the issuance of Securitization bonds of $602 million, including two separate tranches of $301 million. Refer to Note 9 to the Consolidated Financial Statements, "Long-Term Debt," for additional information regarding the terms of the bonds and use of proceeds. For the fourth quarter, DTE Electric will reclassify $594 million of Regulatory assets to Securitized regulatory assets for the net book value of the St. Clair and Trenton Channel plants. Debt service costs for the first tranche will be recovered over a period not to exceed 10 years and costs for the second tranche will be recovered over a period not to exceed 15 years.

~~Integrated Resource Plan~~

In November 2022, DTE Electric filed an Integrated Resource Plan (IRP) with the MPSC, a comprehensive plan to meet the electricity needs of customers over the next 20 years. The IRP included details on planned coal plant retirements and replacement generation, including investments in renewables and battery storage, with a focus on providing increasingly clean, reliable, and affordable electricity to customers.

On July 12, 2023, DTE Energy announced that DTE Electric reached a settlement agreement with the various stakeholders involved in the IRP. The MPSC issued an order approving the settlement agreement on July 26, 2023. The agreement confirmed DTE Electric's plans to convert its Belle River facility from a coal-fired power plant to a natural gas peaking resource in 2025-2026, and to retire the Monroe power plant generation units 3 and 4 in 2028. DTE Electric also accelerated its planned retirement of Monroe generation units 1 and 2 from 2035 to 2032.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

The settlement agreement approved the recovery of undepreciated plant costs that will be retired at Belle River and Monroe. As a result, approximately $2.7 billion of net Property, plant, and equipment was reclassified to a long-term regulatory asset during the third quarter 2023. Future capital expenditures will also be recovered, and the regulatory asset will be remeasured each reporting period for changes in expenditures, retirements, and depreciation.

DTE Electric will securitize $1.05 billion of the plant costs, including approximately $200 million for the estimated net book value of Belle River coal handling assets to be retired in 2025-2026. The remaining $845 million reflects the net book value of Monroe assets to be securitized upon the full retirement of the plant in 2032. Securitization will include the issuance of bonds for the respective plant costs and customer charges for the timely recovery of debt service costs. DTE Electric plans to reclassify amounts to Securitized regulatory assets upon completing the respective securitization financings. Terms of the securitization bonds and recovery periods for the debt service costs will also be determined at that time.

For the remaining net book value of Monroe plant assets, approximately $1.6 billion will be recovered through a regulatory asset with a return on equity of 9.0% and will be amortized over a 15-year period. Amortization will begin upon the issuance of an order in DTE Electric's next rate case, which is currently expected in earlyJanuary 2025. ~~Until then, amounts will continue to be depreciated.~~

Pursuant to the IRP settlement agreement, DTE Electric has also committed to donate a total of $38 million, including $2 million each year from 2024 to 2027 to organizations providing various energy support to low-income customers. The remaining $30 million of donations will be made to organizations providing customers with bill assistance. The $30 million of donations may be made in varying annual amounts over the 15-year period of the Monroe regulatory asset discussed above, with a minimum amount of $1 million each year beginning in 2028. Organizations receiving donations will be determined at a later date in consultation with Michigan's Attorney General and MPSC staff, among others. Donations will not be recovered in rates and will be recorded as Other Expenses on the Consolidated Statements of Operations in future periods as the donations occur.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

NOTE 65 — 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. ~~Equity units and performance~~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 September 30, Nine Months Ended September 30,
2023 2022 2023 2022
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company $ 332 $ 387 $ 978 $ 818
Less: Allocation of earnings to net restricted stock awards — 1 2 2
Net income available to common shareholders — basic $ 332 $ 386 $ 976 $ 816
Average number of common shares outstanding — basic 206 193 206 193
Basic Earnings per Common Share $ 1.61 $ 2.00 $ 4.74 $ 4.22
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company $ 332 $ 387 $ 978 $ 818
Less: Allocation of earnings to net restricted stock awards — 1 2 2
Net income available to common shareholders — diluted $ 332 $ 386 $ 976 $ 816
Average number of common shares outstanding — basic 206 193 206 193
Average performance share awards — 1 — 1
Average number of common shares outstanding — diluted 206 194 206 194
Diluted Earnings per Common Share(a)
$ 1.61 $ 1.99 $ 4.74 $ 4.21

~~(a)~~Equity units excluded from the calculation of diluted EPS were approximately 10.1 million and 10.2 million for the three and nine months ended September 30, 2022, respectively, as the dilutive stock price threshold was not met. The equity units were settled in November 2022 resulting in the issuance of common stock.


	Three Months Ended March 31,
		2024		2023
		(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company		$	313	$	445

Less: Allocation of earnings to net restricted stock awards		1		1
Net income available to common shareholders — basic		$	312	$	444



Average number of common shares outstanding — basic		206		206



Basic Earnings per Common Share		$	1.51	$	2.16

Diluted Earnings per Share
Net Income Attributable to DTE Energy Company		$	313	$	445

Less: Allocation of earnings to net restricted stock awards		1		1
Net income available to common shareholders — diluted		$	312	$	444



Average number of common shares outstanding — basic		206		206

Average performance share awards		1		—
Average number of common shares outstanding — diluted		207		206



Diluted Earnings per Common Share		$	1.51	$	2.16

2926

Table of Contents

DTE Energy Company — DTE Electric Company

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

NOTE 76 — 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 ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022.~~2023. 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.

3027

Table of Contents

DTE Energy Company — DTE Electric Company

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

The following table presents assets and liabilities for DTE Energy measured and recorded at fair value on a recurring basis:


		September 30, 2023												December 31, 2022
		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)
	March 31, 2024																													March 31, 2024						December 31, 2023
	Level 1																									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)																																	(In millions)
Assets	Assets
Cash equivalents(c)	Cash equivalents(c)	$	27	$	—	$	—	$	—	$	—	$	27	$	10	$	—	$	—	$	—	$	—	$	10
Cash equivalents(c)
Cash equivalents(c)
Nuclear decommissioning trusts	Nuclear decommissioning trusts
Equity securities
Equity securities
Equity securities	Equity securities	716		—		—		136		—		852		701		—		—		138		—		839
Fixed income securities	Fixed income securities	105		346		—		91		—		542		115		359		—		89		—		563
Private equity and other	Private equity and other	—		—		—		308		—		308		—		—		—		262		—		262
Hedge funds and similar investments	Hedge funds and similar investments	106		66		—		—		—		172		78		41		—		—		—		119
Cash equivalents	Cash equivalents	39		—		—		—		—		39		42		—		—		—		—		42
Other investments(d)	Other investments(d)
Equity securities	Equity securities	54		—		—		—		—		54		56		—		—		—		—		56
Equity securities
Equity securities
Fixed income securities	Fixed income securities	7		—		—		—		—		7		7		—		—		—		—		7
Cash equivalents	Cash equivalents	35		—		—		—		—		35		72		—		—		—		—		72

Other
Derivative assets	Derivative assets
Commodity contracts(e)	Commodity contracts(e)
Commodity contracts(e)
Commodity contracts(e)
Natural gas	Natural gas	140		143		158		—		(299)		142		426		183		135		—		(649)		95
Electricity		—		223		110		—		(198)		135		—		720		243		—		(643)		320
Environmental & Other		—		154		17		—		(162)		9		—		201		12		—		(196)		17

Other contracts		—		23		—		—		—		23		—		2		—		—		(1)		1
Total derivative assets		140		543		285		—		(659)		309		426		1,106		390		—		(1,489)		433
Total		$	1,229	$	955	$	285	$	535	$	(659)	$	2,345	$	1,507	$	1,506	$	390	$	489	$	(1,489)	$	2,403

Liabilities
Derivative liabilities
Commodity contracts(e)
Natural gas
Natural gas	Natural gas	$	(124)	$	(166)	$	(186)	$	—	$	301	$	(175)	$	(297)	$	(331)	$	(390)	$	—	$	645	$	(373)
Electricity	Electricity	—		(212)		(106)		—		208		(110)		—		(659)		(276)		—		665		(270)
Environmental & Other	Environmental & Other	—		(169)		(6)		—		162		(13)		—		(213)		(1)		—		201		(13)

Other contracts	Other contracts	—		(1)		—		—		—		(1)		—		(2)		—		—		1		(1)

Other contracts

Other contracts
Total derivative assets
Total

Liabilities
Liabilities
Liabilities
Derivative liabilities
Derivative liabilities
Derivative liabilities
Commodity contracts(e)
Commodity contracts(e)
Commodity contracts(e)
Natural gas
Natural gas
Natural gas
Electricity
Environmental & Other

Other contracts

Other contracts

Other contracts

Total
Total
Total	Total	$	(124)	$	(548)	$	(298)	$	—	$	671	$	(299)	$	(297)	$	(1,205)	$	(667)	$	—	$	1,512	$	(657)
Net Assets (Liabilities) at end of period	Net Assets (Liabilities) at end of period	$	1,105	$	407	$	(13)	$	535	$	12	$	2,046	$	1,210	$	301	$	(277)	$	489	$	23	$	1,746
Assets	Assets
Current
Current
Current	Current	$	137	$	427	$	196	$	—	$	(505)	$	255	$	360	$	881	$	286	$	—	$	(1,189)	$	338
Noncurrent	Noncurrent	1,092		528		89		535		(154)		2,090		1,147		625		104		489		(300)		2,065
Total Assets	Total Assets	$	1,229	$	955	$	285	$	535	$	(659)	$	2,345	$	1,507	$	1,506	$	390	$	489	$	(1,489)	$	2,403
Liabilities	Liabilities
Current	Current	$	(101)	$	(410)	$	(146)	$	—	$	512	$	(145)	$	(273)	$	(876)	$	(386)	$	—	$	1,193	$	(342)
Current
Current
Noncurrent	Noncurrent	(23)		(138)		(152)		—		159		(154)		(24)		(329)		(281)		—		319		(315)
Total Liabilities	Total Liabilities	$	(124)	$	(548)	$	(298)	$	—	$	671	$	(299)	$	(297)	$	(1,205)	$	(667)	$	—	$	1,512	$	(657)
Net Assets (Liabilities) at end of period	Net Assets (Liabilities) at end of period	$	1,105	$	407	$	(13)	$	535	$	12	$	2,046	$	1,210	$	301	$	(277)	$	489	$	23	$	1,746

(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 ~~$25~~$19 million and ~~$10~~$11 million ~~of cash equivalents~~ recorded in Restricted cash on DTE Energy's Consolidated Statements of Financial Position at ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, 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.

3128

Table of Contents

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:


		September 30, 2023										December 31, 2022
		Level 1		Level 2		Level 3		Other(a)		Net Balance		Level 1		Level 2		Level 3		Other(a)		Net Balance
		(In millions)
	March 31, 2024																								March 31, 2024					December 31, 2023
	Level 1																					Level 1	Level 2	Level 3		Other(a)	Net Balance	Level 1	Level 2		Level 3	Other(a)	Net Balance
	(In millions)																												(In millions)
Assets	Assets
Cash equivalents(b)	Cash equivalents(b)	$	23	$	—	$	—	$	—	$	23	$	9	$	—	$	—	$	—	$	9
Cash equivalents(b)
Cash equivalents(b)
Nuclear decommissioning trusts	Nuclear decommissioning trusts
Equity securities
Equity securities
Equity securities	Equity securities	716		—		—		136		852		701		—		—		138		839
Fixed income securities	Fixed income securities	105		346		—		91		542		115		359		—		89		563
Private equity and other	Private equity and other	—		—		—		308		308		—		—		—		262		262
Hedge funds and similar investments	Hedge funds and similar investments	106		66		—		—		172		78		41		—		—		119
Cash equivalents	Cash equivalents	39		—		—		—		39		42		—		—		—		42
Other investments	Other investments
Equity securities	Equity securities	19		—		—		—		19		16		—		—		—		16
Equity securities
Equity securities

Cash equivalents
Cash equivalents
Cash equivalents	Cash equivalents	12		—		—		—		12		11		—		—		—		11
Derivative assets — FTRs	Derivative assets — FTRs	—		—		10		—		10		—		—		11		—		11
Total	Total	$	1,020	$	412	$	10	$	535	$	1,977	$	972	$	400	$	11	$	489	$	1,872

Assets	Assets
Assets
Assets
Current
Current
Current	Current	$	23	$	—	$	10	$	—	$	33	$	9	$	—	$	11	$	—	$	20
Noncurrent	Noncurrent	997		412		—		535		1,944		963		400		—		489		1,852
Total Assets	Total Assets	$	1,020	$	412	$	10	$	535	$	1,977	$	972	$	400	$	11	$	489	$	1,872

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

(b)~~Cash equivalents of $23~~Amounts include $19 million and $9$11 million ~~are included~~recorded in Restricted cash on DTE Electric's Consolidated Statements of Financial Position at ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, 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 ~~and~~in money market ~~funds.~~funds and time deposit accounts. The fair value of the time deposit investments does not include quoted prices but is otherwise directly observable.

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 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 ~~$158~~$150 million and ~~$177~~$157 million as of ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, respectively.

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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.

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 tables present the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Energy:

Three Months Ended September 30, 2023 Three Months Ended September 30, 2022
Natural Gas Electricity Other Total Natural Gas Electricity Other Total
(In millions)
Net Assets (Liabilities) as of June 30 $ (54) $ (4) $ 16 $ (42) $ (362) $ (96) $ 30 $ (428)
Transfers into Level 3 from Level 2 — — — — (3) — — (3)
Transfers from Level 3 into Level 2 — — — — — — (5) (5)
Total gains (losses)
Included in earnings(a)
1 79 (1) 79 (32) 40 (1) 7
Recorded in Regulatory liabilities — — (2) (2) — — (4) (4)
Purchases, issuances, and settlements
Settlements 25 (71) (2) (48) 84 (20) (5) 59
Net Assets (Liabilities) as of September 30 $ (28) $ 4 $ 11 $ (13) $ (313) $ (76) $ 15 $ (374)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30(a)
$ 4 $ 26 $ (6) $ 24 $ 29 $ 37 $ (5) $ 61
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30 $ — $ — $ 1 $ 1 $ — $ — $ (1) $ (1)



	Three Months Ended March 31, 2024								Three Months Ended March 31, 2023
	Natural Gas		Electricity		Other		Total		Natural Gas		Electricity		Other		Total
	(In millions)
Net Assets (Liabilities) as of December 31	$	22	$	47	$	6	$	75	$	(255)	$	(33)	$	11	$	(277)


Total gains (losses)
Included in earnings(a)	(25)		(3)		(1)		(29)		151		(45)		1		107
Recorded in Regulatory liabilities	—		—		(2)		(2)		—		—		(9)		(9)
Purchases, issuances, and settlements


Settlements	—		(69)		(1)		(70)		42		40		(1)		81
Net Assets (Liabilities) as of March 31	$	(3)	$	(25)	$	2	$	(26)	$	(62)	$	(38)	$	2	$	(98)
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)	$	(39)	$	1	$	—	$	(38)	$	94	$	19	$	1	$	114
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31	$	—	$	—	$	2	$	2	$	—	$	—	$	(2)	$	(2)

(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.

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DTE Energy Company — DTE Electric Company

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

Nine Months Ended September 30, 2023 Nine Months Ended September 30, 2022
Natural Gas Electricity Other Total Natural Gas Electricity Other Total
(In millions)
Net Assets (Liabilities) as of December 31 $ (255) $ (33) $ 11 $ (277) $ (179) $ (45) $ 9 $ (215)
Transfers from Level 3 into Level 2 — — — — 5 — 5
Total gains (losses)
Included in earnings(a)
163 109 1 273 (382) 22 1 (359)
Recorded in Regulatory liabilities — — 3 3 — — 20 20
Purchases, issuances, and settlements
Settlements 64 (72) (4) (12) 243 (53) (15) 175
Net Assets (Liabilities) as of September 30 $ (28) $ 4 $ 11 $ (13) $ (313) $ (76) $ 15 $ (374)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30a)
$ 94 $ 94 $ (36) $ 152 $ (248) $ (2) $ (31) $ (281)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30 $ — $ — $ 10 $ 10 $ — $ — $ 16 $ 16

~~(a)Amounts are reflected in Operating Revenues — Non-utility operations and Fuel, purchased power, gas, and other — non-utility in DTE Energy's Consolidated Statements of Operations.~~

The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Electric:


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Net Assets as of beginning of period	Net Assets as of beginning of period	$	14	$	25		$	11	$	9
Total gains (losses) recorded in Regulatory liabilities		(2)		(4)			3		20
Total losses recorded in Regulatory liabilities
Purchases, issuances, and settlements	Purchases, issuances, and settlements
Settlements	Settlements	(2)		(5)			(4)		(13)
Net Assets as of September 30		$	10	$	16		$	10	$	16
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30		$	1	$	(1)		$	10	$	16
Settlements
Settlements
Net Assets as of March 31
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31

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 ~~and nine~~ months ended ~~months ended September 30, 2023~~March 31, 2024 and ~~2022.~~

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

2023.

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


			September 30, 2023
		March 31, 2024
Commodity Contracts	Commodity Contracts		Derivative Assets		Derivative Liabilities		Valuation Techniques	Unobservable Input	Range						Weighted Average
			(In millions)
Commodity Contracts
Commodity Contracts																					Derivative Assets						Derivative Liabilities				Valuation Techniques		Unobservable Input		Range												Weighted Average
		(In millions)
Natural Gas
Natural Gas
Natural Gas	Natural Gas		$	158	$	(186)	Discounted Cash Flow	Forward basis price (per MMBtu)	$	(1.69)	—	$	4.79	/MMBtu	$	0.01	/MMBtu		$	119			$		$	(122)			Discounted Cash Flow		Discounted Cash Flow		Forward basis price (per MMBtu)		$	(1.27)		—	—			$	2.42	/MMBtu				$	(0.09)	/MMBtu
Electricity	Electricity		$	110	$	(106)	Discounted Cash Flow	Forward basis price (per MWh)	$	(17.56)	—	$	12.03	/MWh	$	(4.15)	/MWh	Electricity			$	77		$			$	(102)		Discounted Cash Flow		Discounted Cash Flow		Forward basis price (per MWh)			$	(18.83)		—	—			$	11.90	/MWh				$	(4.53)	/MWh


			December 31, 2022
		December 31, 2023
Commodity Contracts	Commodity Contracts		Derivative Assets		Derivative Liabilities		Valuation Techniques	Unobservable Input	Range						Weighted Average
			(In millions)
Commodity Contracts
Commodity Contracts																					Derivative Assets						Derivative Liabilities				Valuation Techniques		Unobservable Input		Range												Weighted Average
		(In millions)
Natural Gas
Natural Gas
Natural Gas	Natural Gas		$	135	$	(390)	Discounted Cash Flow	Forward basis price (per MMBtu)	$	(1.91)	—	$	39.94	/MMBtu	$	0.18	/MMBtu		$	179			$		$	(157)			Discounted Cash Flow		Discounted Cash Flow		Forward basis price (per MMBtu)		$	(1.57)		—	—			$	6.27	/MMBtu				$	(0.08)	/MMBtu
Electricity	Electricity		$	243	$	(276)	Discounted Cash Flow	Forward basis price (per MWh)	$	(29.41)	—	$	15.00	/MWh	$	(3.04)	/MWh	Electricity			$	163		$			$	(116)		Discounted Cash Flow		Discounted Cash Flow		Forward basis price (per MWh)			$	(18.49)		—	—			$	15.47	/MWh				$	(3.99)	/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.

Table of Contents

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:


		September 30, 2023								December 31, 2022
		Carrying		Fair Value						Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Amount		Level 1		Level 2		Level 3
		(In millions)
	March 31, 2024																			March 31, 2024						December 31, 2023
	Carrying																	Carrying	Fair Value			Carrying		Fair Value
	Amount																	Amount	Level 1	Level 2	Level 3		Amount			Level 1	Level 2	Level 3
	(In millions)																								(In millions)
Notes receivable(a), excluding lessor finance leases	Notes receivable(a), excluding lessor finance leases	$	141	$	—	$	—	$	141	$	80	$	—	$	—	$	82
Short-term borrowings	Short-term borrowings	$	1,217	$	—	$	1,217	$	—	$	1,162	$	—	$	1,162	$	—
Notes payable(b)	Notes payable(b)	$	20	$	—	$	—	$	20	$	18	$	—	$	—	$	18
Long-term debt(c)	Long-term debt(c)	$	19,123	$	742	$	14,875	$	934	$	17,978	$	710	$	14,084	$	1,199

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

(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.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

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


		September 30, 2023								December 31, 2022
		Carrying		Fair Value						Carrying		Fair Value
		Amount		Level 1		Level 2		Level 3		Amount		Level 1		Level 2		Level 3
		(In millions)
	March 31, 2024																			March 31, 2024						December 31, 2023
	Carrying																	Carrying	Fair Value			Carrying		Fair Value
	Amount																	Amount	Level 1	Level 2	Level 3		Amount			Level 1	Level 2	Level 3
	(In millions)																								(In millions)

Notes receivable(a)	Notes receivable(a)	$	16	$	—	$	—	$	16	$	17	$	—	$	—	$	17
Short-term borrowings — affiliates		$	—	$	—	$	—	$	—	$	27	$	—	$	—	$	27
Notes receivable(a)
Notes receivable(a)

Short-term borrowings — other
Short-term borrowings — other
Short-term borrowings — other	Short-term borrowings — other	$	656	$	—	$	656	$	—	$	568	$	—	$	568	$	—
Notes payable(b)	Notes payable(b)	$	20	$	—	$	—	$	20	$	17	$	—	$	—	$	17
Long-term debt(c)	Long-term debt(c)	$	10,865	$	—	$	8,994	$	126	$	9,696	$	—	$	8,289	$	128

(a)Included in Current Assets — Other and 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 87 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:


		September 30, 2023		December 31, 2022
		(In millions)
	March 31, 2024					March 31, 2024		December 31, 2023
	(In millions)						(In millions)
Fermi 2	Fermi 2	$	1,898	$	1,807
Fermi 1	Fermi 1	3		3
Low-level radioactive waste	Low-level radioactive waste	12		15
		$	1,913	$	1,825
	$

Table of Contents

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Realized gains	Realized gains	$	5	$	19		$	24	$	65
Realized losses	Realized losses	$	(6)	$	(19)		$	(32)	$	(42)
Proceeds from sale of securities	Proceeds from sale of securities	$	104	$	194		$	527	$	707

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, 2024						December 31, 2023
	Fair Value		Unrealized Gains		Unrealized Losses		Fair Value		Unrealized Gains		Unrealized Losses
	(In millions)
Equity securities	$	982	$	517	$	(11)	$	921	$	459	$	(11)
Fixed income securities	593		11		(32)		590		8		(30)
Private equity and other	328		86		(8)		312		74		(8)
Hedge funds and similar investments	192		7		(8)		184		4		(9)
Cash equivalents	39		—		—		34		—		—
	$	2,134	$	621	$	(59)	$	2,041	$	545	$	(58)

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


	March 31, 2024
	(In millions)
Due within one year	$	10
Due after one through five years	108
Due after five through ten years	101
Due after ten years	275
	$	494

Fixed income securities held in nuclear decommissioning trust funds include $99 million of non-publicly traded commingled funds that do not have a contractual maturity date.

Table of Contents

DTE Energy Company — DTE Electric Company

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

Other Securities

At March 31, 2024, DTE Energy had $200 million invested in time deposit accounts with a maturity of greater than three months, which is included in Current investments on the Consolidated Statements of Financial Position. The ~~following table sets forth DTE Electric's fair value and unrealized gains and losses for the nuclear decommissioning trust funds:~~

September 30, 2023 December 31, 2022
Fair
Value Unrealized
Gains Unrealized
Losses Fair
Value Unrealized
Gains Unrealized
Losses
(In millions)
Equity securities $ 852 $ 388 $ (19) $ 839 $ 342 $ (23)
Fixed income securities 542 — (53) 563 1 (56)
Private equity and other 308 76 (7) 262 63 (5)
Hedge funds and similar investments 172 3 (14) 119 — (18)
Cash equivalents 39 — — 42 — —
$ 1,913 $ 467 $ (93) $ 1,825 $ 406 $ (102)

~~The following table summarizes~~investment does not include quoted prices, but the fair value ~~of the fixed income securities held in nuclear decommissioning trust funds by contractual maturity:~~


	~~September 30, 2023~~
	~~(In millions)~~
~~Due within one year~~	$	7
~~Due after one through five years~~	~~105~~
~~Due after five through ten years~~	86
~~Due after ten years~~	~~253~~
	$	~~451~~

~~Fixed income securities held in nuclear decommissioning trust funds include $91 million of non-publicly traded commingled funds that do not have a contractual maturity date.~~

~~Other Securities~~is otherwise directly observable.

At ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, DTE ~~Energy's~~Energy securities included in Other long-term investments on the Consolidated Statements of Financial Position ~~were comprised~~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 ~~and nine~~ months ended ~~September 30,~~March 31, 2024 and 2023, ~~and 2022.~~respectively.

NOTE 87 — 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.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

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 ~~2026.~~2027. 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 — This segment 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.

Table of Contents

DTE Energy Company — DTE Electric Company

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

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 ~~September 30, 2023~~March 31, 2024 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.

~~Table of Contents~~

~~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:~~

September 30, 2023 December 31, 2022
Derivative
Assets Derivative Liabilities Derivative
Assets Derivative Liabilities
(In millions)
Derivatives designated as hedging instruments
Interest rate contracts $ 22 $ — $ 1 $ —
Foreign currency exchange contracts — (1) — (2)
Total derivatives designated as hedging instruments $ 22 $ (1) $ 1 $ (2)
Derivatives not designated as hedging instruments
Commodity contracts
Natural gas $ 441 $ (476) $ 744 $ (1,018)
Electricity 333 (318) 963 (935)
Environmental & Other 171 (175) 213 (214)
Foreign currency exchange contracts 1 — 1 —
Total derivatives not designated as hedging instruments $ 946 $ (969) $ 1,921 $ (2,167)
Current $ 733 $ (657) $ 1,517 $ (1,535)
Noncurrent 235 (313) 405 (634)
Total derivatives $ 968 $ (970) $ 1,922 $ (2,169)

The fair value of derivative instruments at DTE Electric was $10 million and $11 million at September 30, 2023 and December 31, 2022, respectively, comprised of FTRs recorded to Current Assets - Other on the Consolidated Statements of Financial Position and not designated as hedging instruments.

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DTE Energy Company — DTE Electric Company

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

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


	March 31, 2024				December 31, 2023
	Derivative Assets		Derivative Liabilities		Derivative Assets		Derivative Liabilities
	(In millions)
Derivatives designated as hedging instruments
Interest rate contracts	$	10	$	—	$	—	$	(16)
Foreign currency exchange contracts	—		(1)		—		(2)
Total derivatives designated as hedging instruments	$	10	$	(1)	$	—	$	(18)

Derivatives not designated as hedging instruments
Commodity contracts
Natural gas	$	499	$	(506)	$	637	$	(615)
Electricity	235		(267)		421		(388)
Environmental & Other	146		(161)		139		(150)
Foreign currency exchange contracts	1		—		—		(1)
Total derivatives not designated as hedging instruments	$	881	$	(934)	$	1,197	$	(1,154)

Current	$	658	$	(642)	$	910	$	(847)
Noncurrent	233		(293)		287		(325)
Total derivatives	$	891	$	(935)	$	1,197	$	(1,172)

The fair value of derivative instruments at DTE Electric was $3 million and $7 million at March 31, 2024 and December 31, 2023, respectively, comprised of FTRs recorded to Current Assets - Other on the Consolidated Statements of Financial Position and not designated as hedging instruments.

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 ~~$1 million of~~ letters of credit of $3 million issued and outstanding at ~~September 30, 2023~~March 31, 2024 and ~~$81 million at~~ December 31, ~~2022,~~2023, 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 ~~$18~~$4 million and ~~$82~~$10 million at ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, respectively. 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:~~

September 30, 2023 December 31, 2022
(In millions)
Cash collateral netted against Derivative assets $ — $ (90)
Cash collateral netted against Derivative liabilities 12 113
Cash collateral recorded in Accounts receivable(a)
52 77
Cash collateral recorded in Accounts payable(a)
(15) (27)
Total net cash collateral posted (received) $ 49 $ 73

~~(a)Amounts are recorded net by counterparty.~~

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

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


	March 31, 2024		December 31, 2023
	(In millions)
Cash collateral netted against Derivative assets	$	(2)	$	—
Cash collateral netted against Derivative liabilities	49		72
Cash collateral recorded in Accounts receivable(a)	58		57
Cash collateral recorded in Accounts payable(a)	(4)		(3)
Total net cash collateral posted (received)	$	101	$	126

(a)Amounts are recorded net by counterparty.

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


		September 30, 2023						December 31, 2022
		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)
	March 31, 2024															March 31, 2024				December 31, 2023
	Gross Amounts of Recognized Assets (Liabilities)													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)																		(In millions)
Derivative assets	Derivative assets
Commodity contracts(a)	Commodity contracts(a)
Commodity contracts(a)
Commodity contracts(a)
Natural gas
Natural gas
Natural gas	Natural gas	$	441	$	(299)	$	142	$	744	$	(649)	$	95
Electricity	Electricity	333		(198)		135		963		(643)		320
Environmental & Other	Environmental & Other	171		(162)		9		213		(196)		17
Interest rate contracts	Interest rate contracts	22		—		22		1		—		1
Foreign currency exchange contracts	Foreign currency exchange contracts	1		—		1		1		(1)		—
Total derivative assets	Total derivative assets	$	968	$	(659)	$	309	$	1,922	$	(1,489)	$	433

Derivative liabilities	Derivative liabilities
Derivative liabilities
Derivative liabilities
Commodity contracts(a)	Commodity contracts(a)
Commodity contracts(a)
Commodity contracts(a)
Natural gas
Natural gas
Natural gas	Natural gas	$	(476)	$	301	$	(175)	$	(1,018)	$	645	$	(373)
Electricity	Electricity	(318)		208		(110)		(935)		665		(270)
Environmental & Other	Environmental & Other	(175)		162		(13)		(214)		201		(13)

Interest rate contracts
Foreign currency exchange contracts	Foreign currency exchange contracts	(1)		—		(1)		(2)		1		(1)
Total derivative liabilities	Total derivative liabilities	$	(970)	$	671	$	(299)	$	(2,169)	$	1,512	$	(657)

(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:


		September 30, 2023								December 31, 2022
		Derivative Assets				Derivative Liabilities				Derivative Assets				Derivative Liabilities
		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent		Current		Noncurrent
		(In millions)
	March 31, 2024																				March 31, 2024					December 31, 2023
	Derivative Assets																		Derivative Assets			Derivative Liabilities		Derivative Assets			Derivative Liabilities
	Current																	Current		Noncurrent	Current		Noncurrent	Current		Noncurrent		Current	Noncurrent
	(In millions)																								(In millions)
Total fair value of derivatives	Total fair value of derivatives	$	733	$	235	$	(657)	$	(313)	$	1,517	$	405	$	(1,535)	$	(634)
Counterparty netting	Counterparty netting	(505)		(154)		505		154		(1,127)		(272)		1,127		272
Collateral adjustment	Collateral adjustment	—		—		7		5		(62)		(28)		66		47
Total derivatives as reported	Total derivatives as reported	$	228	$	81	$	(145)	$	(154)	$	328	$	105	$	(342)	$	(315)

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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 September 30,						Gain (Loss) Recognized in Income on Derivatives for the Nine Months Ended September 30,
			2023			2022			2023			2022
						(In millions)
		Location of Gain (Loss) Recognized in Income on Derivatives

			Location of Gain (Loss) Recognized in Income on Derivatives												Location of Gain (Loss) Recognized in Income on Derivatives		Gain (Loss) Recognized in Income on Derivatives for the Three Months Ended March 31,
																2024		2023
										(In millions)									(In millions)
Commodity contracts	Commodity contracts
Natural gas
Natural gas
Natural gas	Natural gas	Operating Revenues — Non-utility operations		$	(41)		$	(52)		$	89		$	(315)
Natural gas	Natural gas	Fuel, purchased power, gas, and other — non-utility		37			108			120			8
Electricity	Electricity	Operating Revenues — Non-utility operations		85			61			30			173
Environmental & Other	Environmental & Other	Operating Revenues — Non-utility operations		(4)			(3)			(5)			15
Foreign currency exchange contracts	Foreign currency exchange contracts	Operating Revenues — Non-utility operations		1			5			—			5
Total	Total			$	78		$	119		$	234		$	(114)

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 ~~September 30, 2023:~~March 31, 2024:


Commodity						Number of Units
Natural gas (MMBtu)						~~2,208,451,991~~2,169,902,328
Electricity (MWh)						~~37,535,900~~42,932,324
Oil (Gallons)						~~4,740,000~~3,204,000
Foreign currency exchange ($ CAD)						~~150,049,286~~127,734,587
FTR (MWh)						~~98,119~~29,452
Renewable Energy Certificates (MWh)						~~10,856,311~~11,275,250
Carbon emissions (Metric Tons)						~~1,652,108~~123,848
Interest rate contracts ($ USD)						~~500,000,000~~950,000,000

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 ~~September 30, 2023,~~March 31, 2024, 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 ~~$437~~$413 million.

As of ~~September 30, 2023,~~March 31, 2024, DTE Energy had ~~$761~~$793 million of derivatives in net liability positions, for which hard triggers exist. There is ~~$12~~$5 million of 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 ~~$632~~$622 million. The net remaining amount of ~~$117~~$166 million is derived from the ~~$437~~$413 million noted above.

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

NOTE 98 — LONG-TERM DEBT

Debt Issuances

Refer to the table below for debt issued through ~~September 30, 2023:~~March 31, 2024:

Company

Month

Type

Interest Rate

Maturity Date

Amount

Company

Month

Type

Interest Rate

Maturity Date

Amount

(In millions)

DTE Energy

DTE Electric

March

Mortgage bonds(a)

5.20%

2033

600

DTE Electric

March

Mortgage bonds(a)

5.40%

2053

600

DTE Energy

March

Term loan facility draw(b)

Variable

2023

200

DTE Energy

May

Senior notes(c)

4.875%

2028

800

DTE Electric

June

Tax-exempt revenue bonds(d)

3.875%

2053

100

2,300

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

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

~~(b)Proceeds used for general corporate purposes.~~

~~(c)Proceeds used for the repayment of amounts outstanding under the term loan facility.~~

~~(d)~~Tax-exempt revenue bonds are issued by a public body that loans the proceeds to DTE Electric with terms substantially mirroring the revenue bonds. Proceeds were used to finance costs relating to solid waste disposal facilities at the Monroe and St. Clair power plants. The bonds will be subject to mandatory tender in June 2030.

In June 2022, DTE Energy entered into a $1.125 billion unsecured term loan with a maturity date of December 2023. Any borrowings on the loan were determined to be long-term debt, as the term of the facility exceeded one year. Through the first quarter 2023, DTE Energy had drawn $1.0 billion on the term loan, bearing interest at SOFR plus 0.90% per annum. These borrowings were repaid in May and June 2023, as noted in the debt redemptions table below. Unused term loan capacity of $125 million terminated in June 2023 per the terms of the credit agreement.

In October 2023, DTE Gas issued $150 million of 5.57% First Mortgage Bonds due October 1, 2030 and $145 million of 5.73% First Mortgage Bonds due October 1, 2035 to a group of institutional investors in a private placement transaction. Proceeds have been used for the repayment of short-term borrowings and for general corporate purposes, including capital expenditures.

In November 2023, DTE Electric issued Securitization bonds of $602 million, including two separate tranches of $301 million. The first tranche was issued with an interest rate of 5.97% and a final maturity date of March 1, 2033. Principal payments will be due semi-annually beginning September 2024, with the final payment scheduled for March 2032. The second tranche was issued with an interest rate of 6.09% and a final maturity date of September 1, 2038. Payments will be due semi-annually beginning March 2032, with the final payment scheduled for September 2037.

The Securitization bonds were issued in alignment with Green Bond principles to support the closure and recovery of St. Clair and Trenton Channel generation plants and DTE Electric's transition to cleaner energy. Proceeds from the bonds were used to reimburse DTE Electric for qualified costs incurred for the net book value of the St. Clair and Trenton Channel plants and other qualified costs. The securitization financing order from the MPSC required that the net proceeds be subsequently applied by DTE Electric to retire existing debt or equity. Accordingly in the fourth quarter 2023, DTE Electric plans to use proceeds of approximately $300 million towards the retirement of debt and approximately $300 million to issue a special dividend to DTE Energy. Refer to Note 5 to the Consolidated Financial Statements, "Regulatory Matters," for additional information.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

Debt Redemptions

~~Refer to the table below for debt redeemed through September 30, 2023:~~

Company Month Type Interest Rate Maturity Date Amount
(In millions)
DTE Gas April Senior notes 6.44% 2023 $ 25
DTE Energy May Term loan facility Variable 2023 800
DTE Electric June Securitization bonds 2.64% 2023 19
DTE Energy June Term loan facility Variable 2023 200
DTE Electric September Mortgage bonds 4.31% 2023 102
$ 1,146

In ~~October 2023,~~March 2024, DTE Electric redeemed at maturity ~~its~~the $100 million ~~2005~~of remaining principal on its 2013 Series ~~C 5.19% Senior Notes.~~B 3.65% Mortgage bonds.

NOTE 109 — 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.

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 ~~September 30, 2023,~~March 31, 2024, the total funded debt to total capitalization ratios for DTE Energy, DTE Electric, and DTE Gas were 0.64 to 1, ~~0.54~~0.53 to 1, and ~~0.46~~0.45 to 1, respectively, and were in compliance with this financial covenant.

During May 2023, DTE Energy paid the amount outstanding and terminated its unsecured Canadian revolving credit facility. In June 2023, DTE Energy entered into a new $100 million uncommitted letter of credit facility, with availability to either DTE Energy or DTE Electric.

In July 2023, DTE Energy entered into an additional $50 million uncommitted letter of credit facility. DTE Energy has also amended the terms of several other letter of credit facilities during 2023, including capacities and maturity dates.

4439

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DTE Energy Company — DTE Electric Company

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

The availability under these facilities as of ~~September 30, 2023~~March 31, 2024 is shown in the following table:


		DTE Energy		DTE Electric		DTE Gas		Total
		(In millions)
	DTE Energy									DTE Energy	DTE Electric	DTE Gas	Total
	(In millions)											(In millions)
Unsecured revolving credit facility, expiring October 2028	Unsecured revolving credit facility, expiring October 2028	$	1,500	$	800	$	300	$	2,600
Unsecured letter of credit facility, expiring June 2024	Unsecured letter of credit facility, expiring June 2024	175		—		—		175
Unsecured letter of credit facility, expiring February 2025	Unsecured letter of credit facility, expiring February 2025	150		—		—		150
Unsecured letter of credit facility(a)		100		—		—		100
Unsecured letter of credit facilities(a)
Unsecured letter of credit facility(b)	Unsecured letter of credit facility(b)	—		100		—		100
Unsecured letter of credit facility(a)		50		—		—		50

		1,975		900		300		3,175
Amounts outstanding at September 30, 2023
		1,975

		1,975

		1,975
Amounts outstanding at March 31, 2024

Commercial paper issuances

Commercial paper issuances

Commercial paper issuances	Commercial paper issuances	371		656		190		1,217

Letters of credit	Letters of credit	144		23		—		167
		515		679		190		1,384
Net availability at September 30, 2023		$	1,460	$	221	$	110	$	1,791
Letters of credit
Letters of credit
	176
Net availability at March 31, 2024

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

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

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 ~~September 30, 2023,~~March 31, 2024, the capacity under the facility was $200 million. The amounts outstanding under demand financing agreements were ~~$139~~$140 million and ~~$166~~$152 million at ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, respectively, and were fully offset by posted collateral.

NOTE 1110 — LEASES

Lessor

During the first quarter 2024, DTE Energy completed construction of and began operating certain energy infrastructure assets under a long-term agreement with a large industrial customer. DTE Energy began leasing these assets to the customer for a 20-year term ending in 2044. DTE Energy has accounted for this arrangement as a finance lease, recognizing a net investment of $119 million as of March 31, 2024. Under the long-term agreement, additional energy infrastructure assets remain under construction and are expected to be completed through the remainder of 2024. The assets will be subsequently leased to the customer and increase the net investment in finance leases accordingly.

The components of DTE Energy’s net investment in finance leases for remaining periods were as follows:


	DTE Energy
	March 31, 2024
	(In millions)
2024	$	36
2025	48
2026	47
2027	47
2028	47
2029 and Thereafter	584
Total minimum future lease receipts	809
Residual value of leased pipeline	17
Less unearned income	421
Net investment in finance lease	405
Less current portion	11
	$	394

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DTE Energy Company — DTE Electric Company

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

Interest income recognized under finance leases was $6$8 million and $7 million for ~~both~~ the three months ended ~~September 30,~~March 31, 2024 and 2023, ~~and 2022, and $20 million and $17 million for the nine months ended September 30, 2023 and 2022,~~ respectively.

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,
			Three Months Ended March 31,
			Three Months Ended March 31,
					2024					2024		2023
					(In millions)						(In millions)
Fixed payments
Variable payments
					$

	Three Months Ended September 30,					Nine Months Ended September 30,
	2023		2022			2023		2022
	(In millions)
Fixed payments	$	4	$	3		$	11	$	11
Variable payments	15		21			33		52
	$	19	$	24		$	44	$	63

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

NOTE 1211 — 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~~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 2015, the EPA finalized ~~National Ambient Air Quality Standards ("NAAQS")~~the NAAQS for ground level ozone. In August 2018, the EPA designated southeast Michigan as "marginal non-attainment" with the 2015 ozone NAAQS. In January 2022, after collecting several years of data, the ~~State~~state submitted a request to the EPA for redesignation of the southeast Michigan ozone non-attainment area to attainment, and to accept their maintenance plan and emission inventories as a revision to the Michigan ~~State Implementation Plan (SIP).~~SIP. On May 19, 2023, the EPA posted in the Federal Register the redesignation of attainment of the ozone standard for the seven-county Southeast Michigan region. DTE Electric does not expect a significant financial impact related to the ozone NAAQS at this time, pending finalization of the state rules and implementation plans.

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. No impact is expected in the near term, and any long-term financial impacts cannot be assessed at this time.

In May 2023, the EPA proposed new rules to address emissions of GHGs from existing, new, modified, or reconstructed sources in the power sector. DTE Electric provided individual comments on the proposal and also worked with industry partners on a broader set of comments. The financial impact cannot be estimated until a final rule is issued, which is currently expected ~~in early~~by May 2024.

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.

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DTE Energy Company — DTE Electric Company

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

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 is in-process 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.

DTE Electric is currently evaluating the compliance options and working with the ~~State~~state of Michigan on ~~determining whether~~identifying any necessary controls ~~are needed. These evaluations/studies may require~~or modifications to ~~some~~ existing intake structures. ~~It is~~DTE Electric's current capital plan includes an estimated $81 million of compliance-related expenditures, including $54 million for 2024 through 2028. Projected capital expenditures are expected to decrease as a result of the planned conversion of the Belle River power plant to natural gas and the retirement of Monroe power plant generating units. However, discussions with the state are ongoing and a revised cost estimate has not ~~possible to quantify the impact of this rule making at this time.~~yet been determined.

As part of the Monroe power plant NPDES permit, EGLE has added requirements to evaluate the thermal discharge of the facility as it relates to Clean Water Act section 316(a) regulations. DTE Electric ~~will submit~~has submitted to EGLE a biological demonstration study plan to evaluate the thermal discharge impacts to an aquatic community. After approval of the plan by EGLE and completion of field sampling, data will be processed and compiled into a comprehensive report. At the present time, DTE Electric cannot predict the outcome of this evaluation or financial impact.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

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. Cleanup of one of the MGP sites is complete, and that site is closed. The investigations have revealed contamination related to the by-products of gas manufacturing at each MGP site. 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 ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, DTE Electric had $9 million ~~and $10 million, respectively,~~ 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 owns and operates three permitted engineered coal ash storage facilities to dispose of coal ash from coal-fired power plants and operates a number of smaller impoundments at its power plants subject to certain provisions in the CCR rule. At certain facilities, the rule ~~currently requires~~required ongoing sampling and testing of monitoring wells, compliance with groundwater standards, and the closure of basins at the end of the useful life of the associated power plant.

On August 28, 2020, Part A of the CCR rule was published in the Federal Register and required all unlined impoundments to initiate closure as soon as technically feasible, but no later than April 11, 2021. Additionally, the rule amends certain reporting requirements and CCR website requirements. On November 12, 2020, Part B of the CCR Rule was published in the Federal Register and provides a process to determine if certain unlined impoundments with an alternative liner system may be sufficiently protective and therefore may continue to operate.

DTE Electric submitted applications to the EPA that support continued use of all impoundments through their active lives. ~~The forced closure date of April 11, 2021 was effectively delayed, pending the EPA completing review of the applications. On September 1, 2022,~~ DTE Electric subsequently ceased receipt of ~~CCR and non-CCR~~ waste ~~streams~~ at the St. Clair power plant bottom ash basins and initiated ~~closure. Therefore, DTE Electric withdrew~~closure, resulting in withdrawal of the Part A ~~rule~~ demonstration for ~~St. Clair, as it was no longer necessary for~~ the ~~EPA to issue an extension of the April 11, 2021 deadline to cease receipt of waste.~~

~~On January 25, 2023,~~plant. Additionally, DTE Electric ~~received notice of the EPA's proposed denial of Part B applications. DTE Electric provided comments on April 10, 2023, in response to the proposed decision. DTE Electric has since~~ implemented projects at the Belle River and Monroe power ~~plant~~plants to cease receipt of waste within any unlined CCR ~~surface impoundments. Therefore, on September 21, 2023, DTE Electric withdrew~~impoundments, resulting in withdrawals of the Part B applications for ~~the Belle River power plant, leaving only the part B application for the Monroe power plant fly ash basin pending final review~~those plants.

Table of ~~the EPA. If the EPA's final decision remains unchanged,~~Contents

DTE Energy Company — DTE Electric ~~does not expect the denied application~~Company

Combined Notes to ~~have a significant operational or financial impact; however, DTE Electric is continuing to review and analyze potential outcomes of this matter.~~Consolidated Financial Statements (Unaudited) — (Continued)

On May 18, 2023, the EPA posted in the Federal Register a proposed rule to regulate legacy CCR surface impoundments and CCR management units. The rule proposes to expand the reach of the CCR rule to inactive electric generation sites and previously unregulated locations of CCR at a regulated facility. DTE Electric is currently evaluating the proposed rule. The financial impact of the proposed rule cannot be estimated until a final rule is issued, which is currently expected in mid-2024.

At the ~~State~~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~~federal permit program. The EPA is currently working with EGLE in reviewing the submitted ~~State~~state program, and DTE Electric will work with EGLE to implement the ~~State~~state program that may be approved in the future.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

On October 13, 2020, the EPA finalized the ELG Reconsideration Rule which revised the regulations from the 2015 ELG rule for FGD wastewater and bottom ash transport water only. The Reconsideration Rule re-established the technology-based effluent limitations guidelines and standards applicable to FGD wastewater and bottom ash transport water. The EPA set the applicability dates for bottom ash transport water "as soon as possible" beginning October 13, 2021 and no later than December 31, 2025. FGD wastewater retrofits must be completed "as soon as possible" beginning October 13, 2021 and no later than December 31, 2025 or December 31, 2028 if a permittee decides to pursue the Voluntary Incentives Program (VIP) subcategory for FGD wastewater. 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.

The Reconsideration Rule also provides additional compliance opportunities by finalizing low utilization and cessation of coal burning subcategories. The Reconsideration Rule provides 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~~state of Michigan. The ~~State~~state of Michigan has issued an NPDES permit for the Belle River power plant establishing compliance deadlines based on the 2020 Reconsideration Rule. On October 11, 2021, in consideration of the deadlines above, DTE Electric submitted a Notice of Planned Participation ("NOPP") to the ~~State~~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.

On March 29, 2023, the EPA published two draft proposals to revise existing ELG rules. The first draft proposal reopened the cessation of coal compliance subcategory from the 2020 ELG rule and ~~allow~~allows for compliance by committing to such cessation no later than December 31, 2028. This proposal was finalized by the EPA on May 30, 2023. The second draft proposal is a broader update to the ELG rules that includes revised compliance standards for FGD wastewater, bottom ash transport water, and other wastewater streams with a compliance date no later than December 31, 2029. 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 in 2025-2026, which was included in the NOPP filed in 2021. DTE Electric also submitted a new NOPP to apply for the cessation of coal compliance subcategory for generating units 3 and 4 at the Monroe power plant. 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.

DTE Electric currently estimates the impact of the CCR and ELG rules to be ~~$481~~$412 million of capital expenditures, including ~~$343~~$403 million for ~~2023~~2024 through ~~2027.~~2028. This estimate may change in future periods as DTE Electric ~~continues~~evaluates the CCR and ELG rules discussed above that are expected to ~~evaluate the proposed EPA rule from May 18, 2023~~be finalized in mid-2024.

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DTE Energy Company — DTE Electric Company

Combined Notes to ~~regulate legacy CCR surface impoundments and CCR management units, as noted above.~~Consolidated Financial Statements (Unaudited) — (Continued)

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 four 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. As of ~~September 30, 2023~~March 31, 2024 and December 31, ~~2022,~~2023, DTE Gas had ~~$20~~$26 million ~~and $23 million, respectively,~~ 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.

Air — ~~The~~In March 2023, the EPA ~~recently finalized its~~published the Good Neighbor Rule, which includes provisions for compressor engines operated for the transportation of natural gas. ~~DTE Gas is assessing the applicability~~The status of the rule ~~on its engines and what impacts that could have on operations.~~remains uncertain as litigation is ongoing. At this time, DTE Gas ~~has~~does not ~~determined whether there~~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. No impact is expected in the near term, and any long-term financial ~~impact~~impacts cannot be assessed at this time.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

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, 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. The case is currently in the discovery phase and trial is scheduled for April 2025. At the present time, DTE Energy ~~cannot predict the outcome or financial impact of this matter.~~

Separately, in December 2021, EGLE issued a Notice of Violation to EES Coke alleging excess visible emissions from pushing operations. In January 2022, EES Coke provided EGLE a response describing the corrective actions taken to prevent future recurrences. At the present time, EES Coke cannot predict the outcome or 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. This determination suspends certain planning requirements and sanctions for the non-attainment area for as long as the area continues to attain the 2010 SO2 air quality standards, but this does not automatically redesignate the area to attainment. Until the area is officially redesignated as attainment, DTE Energy is unable to determine the impacts.

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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 ~~September 30, 2023~~March 31, 2024 was ~~$414~~$392 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 ~~$40~~$44 million at ~~September 30, 2023.~~March 31, 2024. Payments under these guarantees are considered remote.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

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 ~~September 30, 2023,~~March 31, 2024, DTE Energy had ~~$325~~$334 million of performance bonds outstanding, including ~~$151~~$159 million for DTE Electric. Performance bonds are not individually material, except for $130 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 ~~4,950~~4,900 represented employees, including DTE Electric's approximately 2,550 represented employees. This represents ~~49%~~51% and ~~57%~~59% of DTE Energy's and DTE Electric's total employees, respectively. Of these represented employees, ~~less than 1%~~approximately 8% have contracts expiring within one year for DTE Energy. None 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 ~~$4.2~~$4.7 billion and ~~$3.2~~$3.4 billion in ~~2023~~2024 for DTE Energy and DTE Electric, respectively. The Registrants have made certain commitments in connection with the estimated ~~2023~~2024 annual capital expenditures.

Ludington Plant Contract Dispute

DTE Electric and Consumers Energy Company ("Consumers"), joint owners of the Ludington Hydroelectric Pumped Storage plant ("Ludington"), are parties to a 2010 engineering, procurement, and construction agreement with Toshiba America Energy Systems ("TAES"), under which TAES contracted to perform a major overhaul and upgrade of Ludington. The overhauled Ludington units are operational, but TAES' work has been defective and non-conforming. DTE Electric and Consumers have demanded that TAES provide a comprehensive plan to resolve ~~quality control concerns,~~those matters, including adherence to its warranty commitments and other contractual obligations. DTE Electric and Consumers have taken extensive efforts to resolve these issues with TAES, including a formal demand to TAES' parent, Toshiba Corporation, under a parent guaranty it ~~provided in the contract.~~provided. TAES has not provided a comprehensive plan or otherwise met its performance obligations. In order to enforce the contract, DTE Electric and Consumers filed a complaint against TAES and Toshiba Corporation in the U.S. District Court for the Eastern District of Michigan in April 2022.

In June 2022, TAES and Toshiba Corporation filed a motion to dismiss the complaint, along with counterclaims seeking approximately $15 million in damages related to payments allegedly owed under the parties' contract. During September 2022, the motion to dismiss the complaint was denied. DTE Electric believes the outstanding counterclaims are without merit, but would be liable for 49% of the damages if approved. In October 2022, the combined parties submitted a joint discovery plan to proceed with the litigation process and a potential trial during the second half of 2024. DTE Electric cannot predict the financial impact or outcome of this matter.

~~Refer to the~~ ~~Ludington Accounting Application~~ ~~section within Note 5 to the Consolidated Financial Statements, "Regulatory Matters," for additional information regarding costs to address TAES defective work and regulatory accounting treatment.~~

5045

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DTE Energy Company — DTE Electric Company

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

In May 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 Corporation moves forward. Such costs will be offset by any potential litigation proceeds received from TAES or Toshiba Corporation. DTE Electric and Consumers will have the opportunity to seek recovery and ratemaking treatment for amounts which are not recovered from TAES or Toshiba Corporation.

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 54 and 87 to the Consolidated Financial Statements, "Regulatory Matters" and "Financial and Other Derivative Instruments," respectively.

NOTE 1312 — 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 ~~tables detail~~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
2023 2022 2023 2022
(In millions)
Three Months Ended September 30,
Service cost $ 15 $ 25 $ 4 $ 6
Interest cost 54 41 17 12
Expected return on plan assets (89) (87) (28) (32)
Amortization of:
Net actuarial loss 2 29 2 1
Prior service credit (1) — (4) (4)
Net periodic benefit cost (credit) $ (19) $ 8 $ (9) $ (17)


		Pension Benefits				Other Postretirement Benefits
		2023		2022		2023		2022
		(In millions)
Nine Months Ended September 30,
	Pension Benefits										Pension Benefits			Other Postretirement Benefits
	2024									2024		2023	2024		2023
	(In millions)												(In millions)
Three Months Ended March 31,
Service cost
Service cost
Service cost	Service cost	$	43	$	72	$	13	$	20
Interest cost	Interest cost	161		124		49		36
Expected return on plan assets	Expected return on plan assets	(264)		(260)		(83)		(95)
Amortization of:	Amortization of:
Net actuarial loss	Net actuarial loss	5		86		7		3
Net actuarial loss
Net actuarial loss
Prior service credit	Prior service credit	(2)		—		(14)		(14)
Settlements	Settlements	7		—		—		—
Net periodic benefit cost (credit)		$	(50)	$	22	$	(28)	$	(50)
Net periodic benefit credit

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.

~~Table of Contents~~

~~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. ~~For service costs recognized in earnings, these costs have historically been presented in Operation and maintenance in the Registrants' Consolidated Statements~~

Table of ~~Operations. For non-service costs recognized in earnings, these costs have historically been presented in Other (Income) and Deductions~~Contents

DTE Energy Company — ~~Non-operating retirement benefits, net in DTE Energy's Consolidated Statements of Operations and Operation and maintenance in DTE Electric's Consolidated Statements of Operations.~~

~~In November 2022,~~ DTE Electric received a rate order from the MPSC approving the deferral of qualified pension plan service and non-service costs that were previously being recognized in earnings. Therefore, the Registrants are recording these costs as Regulatory assets beginning in December 2022.Company

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

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, other income and deductions, and capital expenditures was a credit of ~~$12~~$1 million and ~~$28~~$9 million for the three ~~and nine~~ months ended ~~September 30,~~March 31, 2024 and 2023, ~~respectively, and a cost of $9 million and $27 million for the three and nine months ended September 30, 2022,~~ 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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Service cost	Service cost	$	3	$	5		$	10	$	15
Interest cost	Interest cost	12		10			37		28
Expected return on plan assets	Expected return on plan assets	(18)		(22)			(55)		(64)
Amortization of:	Amortization of:
Net actuarial loss		—		2			—		4

Prior service credit

Prior service credit

Prior service credit	Prior service credit	(3)		(4)			(10)		(10)
Net periodic benefit credit	Net periodic benefit credit	$	(6)	$	(9)		$	(18)	$	(27)

Pension and Other Postretirement Contributions

No contributions are currently expected for DTE ~~Energy's qualified pension plans or~~Energy’s postretirement benefit plans in ~~2023.~~ 2024, and contributions to the qualified pension plans are expected to be nominal.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 $50 million of qualified pension plan funds from DTE Gas to DTE Electric during the fourth quarter 2023 in exchange for cash consideration.~~

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

NOTE 1413 — SEGMENT AND RELATED INFORMATION

DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure:

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 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.

DTE Vantage 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 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.

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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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Electric	Electric	$	20	$	19		$	55	$	53
Gas	Gas	4		4			13		10
DTE Vantage	DTE Vantage	13		15			32		57
Energy Trading	Energy Trading	20		39			65		78
Corporate and Other	Corporate and Other	—		—			—		—
		$	57	$	77		$	165	$	198
						$

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.

~~Table of Contents~~

~~DTE Energy Company — DTE Electric Company~~

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

Financial data of DTE Energy's business segments follows:


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Operating Revenues — Utility operations	Operating Revenues — Utility operations
Electric
Electric
Electric	Electric	$	1,623	$	1,844		$	4,324	$	4,896
Gas	Gas	227		230			1,245		1,358
Operating Revenues — Non-utility operations	Operating Revenues — Non-utility operations
Electric
Electric
Electric	Electric	3		3			10		11
DTE Vantage	DTE Vantage	199		227			572		626
Energy Trading	Energy Trading	893		3,024			3,365		8,059
Corporate and Other	Corporate and Other	—		—			—		—
Reconciliation and Eliminations	Reconciliation and Eliminations	(57)		(77)			(165)		(198)
Total	Total	$	2,888	$	5,251		$	9,351	$	14,752


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment	Net Income (Loss) Attributable to DTE Energy by Segment
Electric
Electric
Electric	Electric	$	268	$	363		$	547	$	750
Gas	Gas	(5)		(23)			190		179
DTE Vantage	DTE Vantage	56		26			109		68
Energy Trading	Energy Trading	65		56			234		(80)
Corporate and Other	Corporate and Other	(52)		(35)			(102)		(99)

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	332	$	387		$	978	$	818

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

5448

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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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions, except per share amounts)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions, except per share amounts)						(In millions, except per share amounts)
Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	332	$	387		$	978	$	818
Diluted Earnings per Common Share	Diluted Earnings per Common Share	$	1.61	$	1.99		$	4.74	$	4.21

The decrease in Net Income Attributable to DTE Energy Company for the three months ended ~~September 30, 2023~~March 31, 2024 was primarily due to lower earnings in the ~~Electric and~~Energy Trading, Corporate and Other, segments, partially offset by higher earnings in the DTE Vantage, Gas, and Energy Trading segments. The increase in Net Income Attributable to DTE Energy Company for the nine-month period was primarily due to higher earnings in the Energy Trading, DTE Vantage, and Gas segments, partially offset by ~~lower~~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 wind storms and other weather events, coupled with increasing electric vehicle adoption, 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 by ~~32% by the end of 2023,~~ 65% in 2028, 85% in 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 to comply with the new requirements.

To achieve ~~the targeted~~ 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 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.

~~Table of Contents~~

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. ~~DTE Energy expects~~To support its goals for customer affordability, DTE Energy is working to ~~be aided by~~implement operational efficiencies and ~~new~~optimize opportunities ~~resulting~~ from the Inflation Reduction Act ~~enacted in August 2022. Such opportunities include~~to generate tax credits ~~for~~relating to renewable energy, nuclear generation, energy storage, and carbon capture and ~~sequestration, which are expected to~~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 ~~2023-2027~~2024-2028 period are estimated at ~~$18~~$20 billion, comprised of $9 billion for distribution infrastructure, $4 billion for base infrastructure, and $5$7 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, and plans to repurpose the Trenton Channel plant to a battery energy storage system in 2026. DTE Electric has also announced plans to retire its remaining six coal-fired generating ~~units. DTE Electric plans to convert~~units, including converting the two units at the Belle River facility from a base load coal plant to a natural gas peaking resource in 2025-2026. The four units at the Monroe facility are expected to be retired in two stages in 2028 and 2032. 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 ~~2023-2027~~2024-2028 period are estimated at ~~$3.6~~$3.7 billion, comprised of ~~$2.0~~$2.1 billion for base infrastructure and $1.6 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 ~~$1.0~~$1 billion to $1.5 billion from ~~2023-2027~~2024-2028 for renewable energy projects and custom energy solutions, 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 1211 to the Consolidated Financial Statements, "Commitments and Contingencies."

~~Table of Contents~~

OUTLOOK

The next few years will be a period of rapid change for DTE Energy and for the energy industry. 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, health, safety and wellbeing, and diversity, equity, and inclusion;

•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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment	Net Income (Loss) Attributable to DTE Energy by Segment
Electric
Electric
Electric	Electric	$	268	$	363		$	547	$	750
Gas	Gas	(5)		(23)			190		179
DTE Vantage	DTE Vantage	56		26			109		68
Energy Trading	Energy Trading	65		56			234		(80)
Corporate and Other	Corporate and Other	(52)		(35)			(102)		(99)

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	332	$	387		$	978	$	818

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

~~Table of Contents~~

ELECTRIC

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Operating Revenues	Operating Revenues
Utility operations	Utility operations	$	1,623	$	1,844		$	4,324	$	4,896
Utility operations
Utility operations
Non-utility operations	Non-utility operations	3		3			10		11
		1,626		1,847			4,334		4,907
						1,470
Operating Expenses	Operating Expenses
Fuel and purchased power — utility
Fuel and purchased power — utility
Fuel and purchased power — utility	Fuel and purchased power — utility	438		593			1,113		1,543
Operation and maintenance	Operation and maintenance	372		409			1,095		1,188
Depreciation and amortization	Depreciation and amortization	337		307			989		909
Taxes other than income	Taxes other than income	88		86			256		258

		1,235		1,395			3,453		3,898
							1,188
							1,188
							1,188
Operating Income	Operating Income	391		452			881		1,009
Other (Income) and Deductions	Other (Income) and Deductions	104		84			279		248
Income Tax Expense	Income Tax Expense	19		5			55		11
Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	268	$	363		$	547	$	750

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 1312 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets" for additional information.

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Operating Revenues ~~decreased $221 million and $573~~increased $91 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. 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 ~~decrease in both periods~~increase was due to the following:

Three Months Nine Months
(In millions)
Power Supply Cost Recovery $ (89) $ (321)
Weather (105) (222)
Base sales (9) (66)
Interconnection sales (39) (42)
COVID-19 voluntary refund amortization in 2022 (9) (25)
Regulatory mechanism - RPS (14) 11
Implementation of new rates 8 23
Rate Mix 26 50
Other regulatory mechanisms and other(a)
10 19
$ (221) $ (573)


	Three Months
	(In millions)
Implementation of new rates	$	85
Base sales	16
Regulatory mechanism - DTE Securitization I and II	16
Regulatory mechanism - TRM	12
Power Supply Cost Recovery	6
Weather	(6)
Interconnection sales	(7)
Regulatory mechanism - RPS	(12)
Rate mix	(17)
Other regulatory mechanisms and other(a)	(2)
	$	91

______________________________

(a)Primarily includes regulatory ~~mechanisms~~mechanism relating to ~~DTE Securitization and~~ EWR.

~~Table of Contents~~

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


		Three Months Ended September 30,			Nine Months Ended September 30,
		2023	2022		2023	2022
		(In thousands of MWh)
			Three Months Ended March 31,
			Three Months Ended March 31,
			Three Months Ended March 31,
				2024			2024		2023
				(In thousands of MWh)				(In thousands of MWh)
DTE Electric Sales	DTE Electric Sales
Residential
Residential
Residential	Residential	4,292	4,803		11,070	12,393
Commercial	Commercial	4,433	4,541		12,163	12,501
Industrial	Industrial	2,202	2,271		6,477	6,464
Other	Other	46	48		146	151
		10,973	11,663		29,856	31,509
				9,550
Interconnection sales	Interconnection sales	2,314	1,766		5,229	3,551
Total DTE Electric Sales	Total DTE Electric Sales	13,287	13,429		35,085	35,060

DTE Electric Deliveries	DTE Electric Deliveries
DTE Electric Deliveries
DTE Electric Deliveries
Retail and wholesale
Retail and wholesale
Retail and wholesale	Retail and wholesale	10,973	11,663		29,856	31,509
Electric retail access, including self-generators(a)	Electric retail access, including self-generators(a)	1,177	1,201		3,317	3,417
Total DTE Electric Sales and Deliveries	Total DTE Electric Sales and Deliveries	12,150	12,864		33,173	34,926

(a)Represents deliveries for self-generators that have purchased power from alternative energy suppliers to supplement their power requirements.

Fuel and purchased power — utility expense ~~decreased $155 million and $430~~increased $5 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~decrease in both periods~~increase was due to the following:


	Three Months
	(In millions)
Purchased power - ~~lower market~~higher volumes and prices ~~partially offset by~~due to higher ~~purchase volumes~~demand	$	~~(74)~~21
~~Gas - lower prices, partially offset by higher consumption~~	~~(62)~~
Coal - lower consumption, partially offset by higher prices	~~(13)~~(14)
~~Nuclear fuel - lower amortization due to 2023 outage~~	~~(4)~~

Other	(2)
	$	~~(155)~~5


	~~Nine Months~~
	~~(In millions)~~
~~Purchased power - lower market prices and lower purchase volumes due to lower demand~~	$	~~(319)~~
~~Coal - lower consumption due to coal plant retirements, partially offset by higher prices~~	~~(84)~~
~~Gas - lower prices, partially offset by higher consumption primarily due to Blue Water Energy Center~~	~~(32)~~
~~Nuclear fuel - higher amortization due to refueling outage in 2022~~	17
~~Other~~	~~(12)~~
	$	~~(430)~~

~~Operation and maintenance~~ expense decreased $37 million and $93 million in the three and nine months ended September 30, 2023, respectively. The decrease in the third quarter was primarily due to lower corporate support costs of $20 million, lower RPS expense of $17 million, lower benefits and other compensation expense of $10 million, and lower plant generation expense of $9 million, partially offset by higher distribution operations expense of $20 million.

The decrease in the nine-month period was primarily due to lower plant generation expense of $103 million, lower benefits and other compensation expense of $39 million, lower corporate support costs of $35 million, lower legal expense of $15 million, and lower RPS expense of $12 million, partially offset by higher distribution operations expense of $101 million and higher EWR expense of $11 million. For both the third quarter and nine-month period, the lower plant generation expense was primarily due to lower outage costs and coal plant retirements, and the higher distribution operations expense was primarily due to higher storm restoration costs.

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Operation and maintenance expense decreased $26 million in the three months ended March 31, 2024. The decrease was primarily due to lower distribution operations expense of $76 million (primarily due to lower storm restoration costs), partially offset by one-time costs of $31 million resulting from the voluntary separation incentive program and higher plant generation expense of $17 million.

Depreciation and amortization expense increased ~~$30 million and $80~~$33 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in both periods~~ was primarily due toa $27 million increase from a higher depreciable ~~base.~~base and a $6 million increase associated with the TRM.

Other (Income) and Deductions increased ~~$20 million and $31~~$9 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in the third quarter~~ was primarily due to higher net interest expense of ~~$18 million and higher non-operating retirement benefits expense of $6~~$20 million, partially offset by higher AFUDC equity of ~~$2 million. The increase in the nine-month period was primarily due to higher net interest expense of $33~~$9 million and higher ~~non-operating retirement benefits expense~~investment income of ~~$23 million, partially offset by a favorable change in investment earnings of $18 million and higher AFUDC equity of $6~~$2 million.

Income Tax Expense increased ~~$14 million and $44~~$1 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in the third quarter~~ was primarily due to ~~lower amortization of the TCJA regulatory liability,~~higher earnings, partially offset by ~~lower taxes resulting from lower earnings. The increase in the nine-month period was primarily due to lower amortization of the TCJA regulatory liability and lower~~higher production tax ~~credits, partially offset by lower taxes resulting from lower earnings and tax benefits resulting from the settlement of a state tax audit.~~credits.

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 keeping customer rate increases affordable. Looking forward, additional factors may impact earnings such as weather, the outcome of regulatory proceedings, benefit plan design changes, uncertainty of legislative or regulatory actions regarding climate change, and effects of energy waste reduction programs.

GAS

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


		Three Months Ended September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Operating Revenues — Utility operations	Operating Revenues — Utility operations	$	227	$	230		$	1,245	$	1,358

Operating Expenses	Operating Expenses
Operating Expenses
Operating Expenses
Cost of gas — utility
Cost of gas — utility
Cost of gas — utility	Cost of gas — utility	23		39			331		436
Operation and maintenance	Operation and maintenance	115		130			366		405
Depreciation and amortization	Depreciation and amortization	51		47			153		140
Taxes other than income	Taxes other than income	23		21			82		76
Asset (gains) losses and impairments, net	Asset (gains) losses and impairments, net	—		—			(1)		—
		212		237			931		1,057
Operating Income (Loss)		15		(7)			314		301
						483
Operating Income
Other (Income) and Deductions	Other (Income) and Deductions	23		22			64		65
Income Tax Expense (Benefit)		(3)		(6)			60		57
Net Income (Loss) Attributable to DTE Energy Company		$	(5)	$	(23)		$	190	$	179
Income Tax Expense
Net Income Attributable to DTE Energy Company

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Operating Revenues — Utility operations ~~decreased $3 million and $113~~increased $4 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. 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 ~~decrease in both periods~~increase was due to the following:

Three Months Nine Months
(In millions)
Gas Cost Recovery $ (16) $ (105)
Weather (2) (64)
Voluntary refund 2 4
Regulatory mechanism - EWR 2 5
Base sales 1 8
Infrastructure recovery mechanism 10 29
Other — 10
$ (3) $ (113)


	Three Months
	(In millions)
Infrastructure recovery mechanism	$	9
Gas Cost Recovery	7
Base sales	(3)
Weather	(6)



Other	(3)
	$	4

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


		Three Months Ended September 30,			Nine Months Ended September 30,
		2023	2022		2023	2022
		(In Bcf)
			Three Months Ended March 31,
			Three Months Ended March 31,
			Three Months Ended March 31,
				2024			2024		2023
				(In Bcf)				(In Bcf)
Gas Markets	Gas Markets
Gas sales	Gas sales	8	8		89	100
Gas sales
Gas sales
End-user transportation	End-user transportation	40	33		129	124
		48	41		218	224
				112
Intermediate transportation	Intermediate transportation	121	125		401	404
Total Gas sales	Total Gas sales	169	166		619	628

Cost of gas — utility expense ~~decreased $16 million and $105~~increased $7 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~decrease in the third quarter~~increase was primarily due to a ~~lower~~higher cost of gas of ~~$18 million. The decrease in the nine-month period was primarily due to~~$12 million, partially offset by lower sales volumes of ~~$55 million and a lower cost of gas of $50~~$5 million.

Operation and maintenance expense ~~decreased $15 million and $39~~increased $11 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~decrease in the third quarter~~increase was primarily due to ~~lower~~one-time costs of $8 million resulting from the voluntary separation incentive program and higher gas operations expense of $10 million and lower corporate support costs of $6 million. The decrease in the nine-month period was primarily due to lower gas operations expense of $29 million and lower corporate support costs of $16$5 million, partially offset by ~~higher EWR~~lower uncollectible expense of $3 ~~million and higher legal expense of $2~~ million.

Depreciation and amortization expense increased ~~$4 million and $13~~$3 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in both periods~~ was primarily due to a higher depreciable base.

~~Taxes other than income~~Other (Income) and Deductions ~~expense~~ increased ~~$2 million and $6~~$3 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in both periods~~ was primarily due to higher ~~property taxes.~~net interest expense of $3 million.

Income Tax Expense decreased $5 million in the three months ended March 31, 2024. The decrease was primarily due to lower earnings.

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, the outcome of regulatory proceedings, and benefit plan design changes. 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 January 8, 2024 requesting an increase in base rates of $266 million based on a projected twelve-month period ending September 30, 2025, and an increase in return on equity from 9.9% to 10.25%. The request reflects a net increase to customer rates of only $160 million, as an existing IRM surcharge of $106 million would be rolled into the new base rates. The requested increase is primarily due to increased investments in plant related to system reliability and pipeline safety and inflationary impacts on operating costs, partially offset by higher sales. A final MPSC order in this case is expected in November 2024.

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DTE VANTAGE

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 September 30,					Nine Months Ended September 30,
		2023		2022			2023		2022
		(In millions)
				Three Months Ended March 31,
				Three Months Ended March 31,
				Three Months Ended March 31,
						2024					2024		2023
						(In millions)						(In millions)
Operating Revenues — Non-utility operations	Operating Revenues — Non-utility operations	$	199	$	227		$	572	$	626

Operating Expenses	Operating Expenses
Operating Expenses
Operating Expenses
Fuel, purchased power, and gas — non-utility
Fuel, purchased power, and gas — non-utility
Fuel, purchased power, and gas — non-utility	Fuel, purchased power, and gas — non-utility	98		124			288		317
Operation and maintenance	Operation and maintenance	50		64			171		194
Depreciation and amortization	Depreciation and amortization	14		13			39		39
Taxes other than income	Taxes other than income	2		3			7		8
Asset (gains) losses and impairments, net	Asset (gains) losses and impairments, net	(12)		1			(9)		(4)
		152		205			496		554
						175
Operating Income	Operating Income	47		22			76		72
Other (Income) and Deductions	Other (Income) and Deductions	(7)		(9)			(25)		(10)
Income Taxes	Income Taxes
Expense	Expense	15		8			28		20
Expense
Expense
Tax credits	Tax credits	(17)		(3)			(36)		(6)
		(2)		5			(8)		14
						—

Net Income Attributable to DTE Energy Company	Net Income Attributable to DTE Energy Company	$	56	$	26		$	109	$	68

Net Income Attributable to DTE Energy Company

Net Income Attributable to DTE Energy Company

Operating Revenues — Non-utility operations ~~decreased $28 million and$54 million~~had no change in the three ~~and nine~~ months ended ~~September 30, 2023, respectively. The decrease in both periods was due to~~March 31, 2024. Activity for the period included the following:

Three Months Nine Months
(In millions)
Lower demand and prices in the On-site business $ (16) $ (34)
Sales and prices in the Renewables business 2 (24)
Sale of project in the On-site business (10) (20)
Demand and prices in the Steel business (5) 24
Other 1 —
$ (28) $ (54)


	Three Months
	(In millions)

Higher sales in the Renewables business	4
Lower demand in the Steel business	(1)
Sale of project in the On-site business	(3)



	$	—

Fuel, purchased power, and gas — non-utility expense ~~decreased $26 million and $29~~increased $6 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~decrease in both periods~~increase was due to the following:

Three Months Nine Months
(In millions)
Lower demand and prices in the On-site business $ (13) $ (31)
Sale of project in the On-site business (4) (6)
Demand and prices in the Steel business (12) 7
Other 3 1
$ (26) $ (29)

~~Table of Contents~~

~~Operation and maintenance~~ ~~expense~~decreased $14 million and $23 million in the three and nine months ended September 30, 2023, respectively. The decrease in the third quarter was primarily due to lower operating costs in the Renewables business of $6 million and lower operating costs in the On-site business of $6 million, which was primarily driven by a decrease of $3 million due to the sale of a project. The decrease in the nine-month period was primarily due to lower operating costs in the Renewables business of $9 million and lower operating costs in the On-site business of $14 million, which was primarily driven by a decrease of $9 million to the sale of a project.

~~Asset (gains) losses and impairments, net~~ changed $13 million and $5 million in the three and nine months ended September 30, 2023, respectively. The change in the third quarter was primarily due to a gain of $17 million resulting from a change in estimate of an asset retirement obligation in the Steel business, partially offset by asset write-offs in other business units of $5 million. The change in the nine-month period was primarily due to the $17 million gain in the Steel business, partially offset by asset write-offs in other business units of $6 million. The net gain for the nine-month period was also partially offset by $5 million due to the settlement of contingent consideration relating to a 2017 acquisition in the Renewables business, which resulted in a loss of $2 million in 2023 compared to a gain of $3 million recorded in 2022.


	Three Months
	(In millions)
Higher sales in the Renewables business	$	8
Higher costs in the Steel business	1
Sale of project in the On-site business	(3)


Other	—
	$	6

Other (Income) and Deductions ~~decreased $2 million and increased $15~~changed by $10 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~increase in the nine-month period~~change was primarily due to ~~$11~~$10 million ~~higher~~of lower equity investment earnings in the Renewables ~~business and $4 million higher interest income associated with a new project in the Steel~~ business.

Income Taxes — Tax credits ~~increased $14 million and $30~~decreased $7 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~increase in the third quarter~~decrease was primarily due to lower investment tax credits ~~of $11 million related to a new project~~ in the Renewables business. ~~The increase in the nine-month period was primarily due to investment tax credits~~

Table of ~~$17 million related to new projects in the Renewables business and $9 million for a new project in the On-site business.~~Contents

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.

ENERGY TRADING

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 September 30, Nine Months Ended September 30,
2023 2022 2023 2022
(In millions)
Operating Revenues — Non-utility operations $ 893 $ 3,024 $ 3,365 $ 8,059
Operating Expenses
Purchased power, gas, and other — non-utility 780 2,928 2,975 8,087
Operation and maintenance 23 16 62 51
Depreciation and amortization 2 2 4 4
Taxes other than income — 1 4 6
805 2,947 3,045 8,148
Operating Income (Loss) 88 77 320 (89)
Other (Income) and Deductions 1 3 8 18
Income Tax Expense (Benefit) 22 18 78 (27)
Net Income (Loss) Attributable to DTE Energy Company $ 65 $ 56 $ 234 $ (80)

~~Table of Contents~~


	Three Months Ended March 31,
		2024		2023
		(In millions)
Operating Revenues — Non-utility operations		$	933	$	1,568

Operating Expenses
Purchased power, gas, and other — non-utility		905		1,356
Operation and maintenance		26		21
Depreciation and amortization		1		1
Taxes other than income		3		3
		935		1,381
Operating Income (Loss)		(2)		187
Other (Income) and Deductions		(3)		3
Income Tax Expense		—		46
Net Income Attributable to DTE Energy Company		$	1	$	138

Operating Revenues — Non-utility operations decreased ~~$2,131 million and $4,694~~$635 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The following ~~tables detail~~table details changes relative to the comparable prior ~~periods:~~period:


	Three Months
	(In millions)
Gas structured and gas transportation strategies - ($~~2,025)~~353) primarily due to lower gas prices, ($~~84)~~60) settled financial hedges	$	~~(2,109)~~(413)
Unrealized MTM - ~~$21 gains~~($151) losses compared to ($~~40)~~4) losses in the prior period	61 (147)
Other realized gain (loss)	~~(83)~~(75)
	$	~~(2,131)~~(635)


	~~Nine Months~~
	~~(In millions)~~
~~Gas structured and gas transportation strategies - ($4,651) primarily due to lower gas prices, ($100) settled financial hedges~~	$	~~(4,751)~~
~~Unrealized MTM - $105 gains compared to ($143) losses in the prior period~~	~~248~~
~~Other realized gain (loss)~~	~~(191)~~
	$	~~(4,694)~~

Purchased power, gas, and other — non-utility expense decreased ~~$2,148 million and $5,112~~$451 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The following ~~tables detail~~table details changes relative to the comparable prior ~~periods:~~period:


	Three Months
	(In millions)
Gas structured and gas transportation strategies - primarily lower gas prices	$	~~(2,085)~~(438)
Unrealized MTM - ~~($36) gains~~$59 losses compared to ~~($107) gains~~$148 losses in the prior period	7189
Other realized (gain) loss	~~(134)~~(102)
	$	~~(2,148)~~(451)


	~~Nine Months~~
	~~(In millions)~~
~~Gas structured and gas transportation strategies - primarily lower gas prices~~	$	~~(4,743)~~
~~Unrealized MTM - ($119) gains compared to ($7) gains in the prior period~~	~~(112)~~
~~Other realized (gain) loss~~	~~(257)~~
	$	~~(5,112)~~

Operation and maintenance expense increased ~~$7 million and $11~~$5 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The increase ~~in both periods~~ was primarily due to higher compensation costs.

Table of Contents

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.

Operating Income (Loss) ~~increased $11~~decreased $189 million for the three months ended ~~September 30, 2023,~~March 31, 2024, which includes a ~~$75~~$103 million unfavorable change in timing-related gains primarily related to gas strategies subject to reversal in future periods as the underlying contracts settle. The ~~increase~~decrease also includes a ~~$19~~$122 million ~~favorable~~unfavorable change in timing-related gains and losses primarily related to gas strategies that were recognized in previous periods and subsequently reversed as the underlying contracts settled.

Operating Income (Loss) increased $409 million for the nine months ended September 30, 2023, which includes a $391 million favorable change in timing-related gains and losses primarily related to gas strategies subject to reversal in future periods as the underlying contracts settle. The increase also includes a $17 million favorable change in timing-related losses primarily related to gas strategies that were recognized in previous periods and subsequently reversed as the underlying contracts settled.

~~Table of Contents~~

Other (Income) and Deductions ~~decreased $2 million and $10~~changed by $6 million in the three ~~and nine~~ months ended ~~September 30, 2023, respectively.~~March 31, 2024. The ~~decrease in the nine-month period~~change was primarily due to ~~lower contributions to not-for-profit organizations.~~higher interest income.

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 76 and 87 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 funds supporting regional development and economic growth. The net loss of ~~$52 million and $102~~$21 million for the three ~~and nine~~ months ended ~~September 30, 2023, respectively,~~March 31, 2024 represents ~~an increase~~a change of ~~$17 million and $3~~$29 million from the net ~~loss~~income of ~~$35 million and $99~~$8 million in the comparable ~~2022 periods.~~2023 period. The ~~increase in the third quarter~~change was primarily due to effective income tax rate adjustments, higher net interest expense, higher state income taxes, and ~~effective income tax rate adjustments. The increase in the nine-month period was primarily due to higher net interest expense, partially offset by effective income tax rate adjustments, lower~~ equity investment ~~losses,~~losses.

Outlook — Corporate and ~~lower~~Other will continue to support DTE Energy's goals to achieve long-term earnings growth by managing corporate ~~overhead costs.~~costs such as interest and tax expense while making prudent investments. 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 that have increased in recent periods.

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 ~~2023~~2024 will be approximately ~~$3.2~~$3.3 billion. DTE Energy anticipates base level utility capital investments, including environmental, renewable, and energy waste reduction expenditures, and expenditures for non-utility businesses of approximately ~~$4.2~~$4.7 billion in ~~2023.~~2024. 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.

Nine Months Ended September 30,
2023 2022
(in millions)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period $ 43 $ 35
Net cash from operating activities 2,375 1,412
Net cash used for investing activities (2,941) (2,453)
Net cash from financing activities 589 1,057
Net Increase in Cash, Cash Equivalents, and Restricted Cash 23 16
Cash, Cash Equivalents, and Restricted Cash at End of Period $ 66 $ 51

~~Table of Contents~~


	Three Months Ended March 31,
	2024		2023
	(in millions)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	$	51	$	43
Net cash from operating activities	1,042		924
Net cash used for investing activities	(1,616)		(981)
Net cash from financing activities	872		151
Net Increase in Cash, Cash Equivalents, and Restricted Cash	298		94
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	349	$	137

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 increased by ~~$963~~$118 million in ~~2023.~~2024. The increase was primarily due to ~~increases in Net Income, Depreciation and amortization, Deferred income taxes, and~~higher cash from working capital ~~items.~~items, partially offset by a decrease in Net income.

The change in working capital items in ~~2023~~2024 was primarily due to increases ~~in cash related to Accounts receivable and Regulatory assets and liabilities, partially offset by decreases~~ in cash related to Accounts payable, Derivative assets and liabilities, and Other current and noncurrent assets and ~~liabilities.~~liabilities, partially offset by decreases in cash related to Accounts receivable, net and Inventories.

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.

Capital spending within the non-utility businesses is primarily 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 ~~$488~~$635 million in ~~2023~~2024 primarily due to ~~an increase~~increases in utility plant and equipment expenditures and ~~an increase~~Notes receivable, and the Investment in ~~cash used for Notes receivable.~~time deposit.

Cash from 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.

Net cash from financing activities ~~decreased~~increased by ~~$468~~$721 million in ~~2023~~2024 primarily due to ~~decreases in cash related to Redemption of long-term debt and Short-term borrowings, net, partially offset by increases~~an increase in cash related to the Issuance of long-term debt, net of discount and issuance costs, ~~and Repurchase~~partially offset by a decrease in cash related to Redemption of ~~common stock.~~long-term debt.

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Outlook

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. DTE Energy expects long-term growth in sales related to vehicle electrification, 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 expects enhanced growth opportunities in decarbonization as a result of the Inflation Reduction Act, ~~enacted in August 2022,~~ including tax credits for renewable natural gas and carbon capture projects.

~~Table of Contents~~

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.

At the discretion of management and depending upon economic and financial market conditions, DTE Energy expects to issue up to $100 million of equity in ~~2023.~~2024. DTE Energy anticipates these discretionary equity issuances to be made through contributions to the dividend reinvestment plan and/or employee benefit plans.

Over the long-term, DTE Energy does not have any equity commitments and 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 ~~the impact of rising~~changes in interest rates and impacts on the cost of borrowing.

Uses of Cash

DTE Energy has ~~$594 million~~$2.4 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 and 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 $0.8 billion in ~~2023.~~2024. 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.

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 ~~September 30, 2023,~~March 31, 2024, 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 ~~$437~~$413 million.

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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
5						~~Regulatory Matters~~
87						Financial and Other Derivative Instruments
98						Long-Term Debt
109						Short-Term Credit Arrangements and Borrowings
1211						Commitments and Contingencies
1312						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, ~~2022.~~

~~Table of Contents~~

2023.

Liquidity

DTE Energy has approximately ~~$1.8~~$3.0 billion of available liquidity at ~~September 30, 2023,~~March 31, 2024, 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 76 and 87 to the Consolidated Financial Statements, "Fair Value" and "Financial and Other Derivative Instruments," respectively.

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 76 to the Consolidated Financial Statements, "Fair Value."

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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, ~~2022~~2023	$	~~(224)~~97
Reclassified to realized upon settlement	~~(14)~~(74)
Changes in fair value recorded to income	~~234~~ (20)
Amounts recorded to unrealized income	~~220~~ (94)
Changes in fair value recorded in Regulatory liabilities	3 (2)
Amounts recorded in other comprehensive income, pre-tax	2227
Change in collateral	~~(11)~~(25)
MTM at ~~September 30, 2023~~March 31, 2024	$	103

~~Table of Contents~~

The table below shows the maturity of DTE Energy's MTM positions. The positions from ~~2026~~2027 and beyond principally represent longer tenor gas structured transactions:


Source of Fair Value	Source of Fair Value		2023		2024		2025		2026 and Beyond		Total Fair Value		Source of Fair Value	2024	2025	2026	2027 and Beyond		Total Fair Value
			(In millions)
		(In millions)																(In millions)
Level 1	Level 1		$	—	$	11	$	7	$	(2)	$	16
Level 2	Level 2		13		(1)		—		(17)		(5)
Level 3	Level 3		5		37		4		(59)		(13)
MTM before collateral adjustments	MTM before collateral adjustments		$	18	$	47	$	11	$	(78)	(2)
Collateral adjustments	Collateral adjustments										12
MTM at September 30, 2023											$	10
MTM at March 31, 2024

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.

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.

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Credit Risk

Allowance for Doubtful Accounts

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.

~~Table of Contents~~

The following table displays the credit quality of DTE Energy's trading counterparties as of ~~September 30, 2023:~~March 31, 2024:


		Credit Exposure Before Cash Collateral		Cash Collateral		Net Credit Exposure
		(In millions)
	Credit Exposure Before Cash Collateral							Credit Exposure Before Cash Collateral	Cash Collateral		Net Credit Exposure
	(In millions)									(In millions)
Investment Grade(a)	Investment Grade(a)
A- and Greater
A- and Greater
A- and Greater	A- and Greater	$	366	$	—	$	366
BBB+ and BBB	BBB+ and BBB	331		(3)		328
BBB-	BBB-	13		—		13
Total Investment Grade	Total Investment Grade	710		(3)		707
Non-investment grade(b)	Non-investment grade(b)	7		—		7
Internally Rated — investment grade(c)	Internally Rated — investment grade(c)	350		—		350
Internally Rated — non-investment grade(d)	Internally Rated — non-investment grade(d)	11		—		11
Total	Total	$	1,078	$	(3)	$	1,075

(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 ~~25%~~27% 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 less than 1% 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 ~~13%~~12% 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 less than 1% of the total gross credit exposure.

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 ~~September 30, 2023,~~March 31, 2024, DTE Energy had floating rate debt of ~~$1.2 billion~~$290 million and a floating rate debt-to-total debt ratio of ~~6.0%~~1.4%.

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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.

~~Table of Contents~~

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 ~~September 30,~~March 31, 2024 and 2023 ~~and 2022~~ 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 September 30,				As of September 30,
		Assuming a 10% Increase in Prices/Rates
			As of March 31,
			As of March 31,
			As of March 31,
Activity	Activity		2023		2022		2023		2022		Change in the Fair Value of
			(In millions)
Activity
Activity															2024						2023						2024						2023				Change in the Fair Value of
		(In millions)
Environmental contracts
Environmental contracts
Environmental contracts	Environmental contracts		$	(7)	$	(8)	$	7	$	8	Commodity contracts		$	(10)			$		$	(2)			$		$	10			$		$	2			Commodity contracts		Commodity contracts
Gas contracts	Gas contracts		$	35	$	19	$	(35)	$	(19)	Commodity contracts	Gas contracts			$	39		$			$	19		$			$	(39)		$			$	(19)		Commodity contracts		Commodity contracts
Power contracts	Power contracts		$	3	$	13	$	(4)	$	(13)	Commodity contracts	Power contracts			$	(2)		$			$	8		$			$	2		$			$	(8)		Commodity contracts		Commodity contracts
Oil contracts	Oil contracts		$	1	$	2	$	(1)	$	(2)	Commodity contracts	Oil contracts			$	1		$			$	1		$			$	(1)		$			$	(1)		Commodity contracts		Commodity contracts
Interest rate risk — DTE Energy	Interest rate risk — DTE Energy		$	(717)	$	(667)	$	776	$	718	Long-term debt	Interest rate risk — DTE Energy			$	(781)		$			$	(709)		$			$	837		$			$	762		Long-term debt		Long-term debt
Interest rate risk — DTE Electric	Interest rate risk — DTE Electric		$	(477)	$	(426)	$	524	$	466	Long-term debt	Interest rate risk — DTE Electric			$	(515)		$			$	(480)		$			$	560		$			$	523		Long-term debt		Long-term debt

For further discussion of market risk, see Note 87 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 ~~September 30, 2023,~~March 31, 2024, 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 ~~September 30, 2023~~March 31, 2024 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 ~~September 30, 2023,~~March 31, 2024, 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 ~~September 30, 2023~~March 31, 2024 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 54 and 1211 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 ~~2022~~2023 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 ~~September 30, 2023:~~March 31, 2024:

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
07/01/2023 — 07/31/2023 5,408 $ 111.60 — — —
08/01/2023 — 08/31/2023 3,353 $ 112.29 — — —
09/01/2023 — 09/30/2023 800 $ 108.15 — — —
Total 9,561 —


	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
01/01/2024 — 01/31/2024	26,336	$	105.00	—	—	—
02/01/2024 — 02/29/2024	45	$	107.47	—	—	—
03/01/2024 — 03/31/2024	5,473	$	116.98	—	—	—
Total	31,854			—

(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. Insider Trading Arrangements and Policies

~~For~~During the quarter ended ~~September 30, 2023,~~March 31, 2024, no DTE Energy directors or officers have 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 .14.1

~~Fifty-fourth~~ Supplemental Indenture dated as of ~~October~~February 1, ~~2023,~~2024, to the Amended and Restated Indenture, dated as of April 9, 2001, by and between DTE Energy Company and The Bank of New York Mellon Trust Company, N.A., as successor trustee. (2024 Series A)

4 .2

Supplemental Indenture dated as of February 1, 2024, to the Mortgage and Deed of Trust dated as of ~~March~~October 1, ~~1944,~~1924, between DTE ~~Gas~~Electric Company and ~~Citibank N.A., trustee (2023 Series E and F)~~

1 ~~0.1~~

~~Form~~The Bank of ~~Amendment No. 1, dated as of October 25, 2023, to the Fifth Amended and Restated Five-Year Credit Agreement, dated as of October 25, 2022, by and among DTE Energy~~New York Mellon Trust Company, ~~the lenders party thereto, and Citibank,~~ N.A., as ~~Administrative Agent~~trustee (2024 Series B and C)

31.1

Chief Executive Officer Section 302 Form 10-Q Certification of Periodic Report

31.2

Chief Financial Officer Section 302 Form 10-Q Certification of Periodic Report

31.3

Chief Executive Officer Section 302 Form 10-Q Certification of Periodic Report

31.4

Chief Financial Officer Section 302 Form 10-Q Certification of Periodic Report

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.

101.SCH

XBRL Taxonomy Extension Schema

101.CAL

XBRL Taxonomy Extension Calculation Linkbase

101.DEF

XBRL Taxonomy Extension Definition Database

101.LAB

XBRL Taxonomy Extension Label Linkbase

101.PRE

XBRL Taxonomy Extension Presentation Linkbase

(ii) Exhibits furnished herewith:

32.1

Chief Executive Officer Section 906 Form 10-Q Certification of Periodic Report

32.2

Chief Financial Officer Section 906 Form 10-Q Certification of Periodic Report

32.3

Chief Executive Officer Section 906 Form 10-Q Certification of Periodic Report

32.4

Chief Financial Officer Section 906 Form 10-Q Certification of Periodic Report

~~(iii) Exhibits incorporated by reference:~~

1 ~~0.2~~

Securitization Property Servicing Agreement between DTE Electric Securitization Funding II LLC and DTE Electric Company, as Servicer, dated as of November 1, 2023 (Exhibit 10.1 to DTE Electric’s Form 8-K filed November 1, 2023)

1 ~~0.3~~

Securitization Property Purchase and Sale Agreement between DTE Electric Securitization Funding II LLC and DTE Electric Company, as Seller, dated as of November 1, 2023 (Exhibit 10.2 to DTE Electric’s Form 8-K filed November 1, 2023)

1 ~~0.4~~

Administration Agreement between DTE Electric Securitization Funding II LLC and DTE Electric Company, as Administrator, dated as of November 1, 2023 (Exhibit 10.3 to DTE Electric’s Form 8-K filed November 1, 2023)

1 ~~0.5~~

Intercreditor Agreement by and among DTE Electric Company, DTE Electric Securitization Funding I LLC, DTE Electric Securitization Funding II LLC, The Bank of New York Mellon and U.S. Bank Trust Company, National Association, dated as of November 1, 2023 (Exhibit 10.4 to DTE Electric's Form 8-K filed November 1, 2023)

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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:	~~November 1, 2023~~April 25, 2024
			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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	Three Months Ended September 30, 2023								Three Months Ended September 30, 2022
	Natural Gas		Electricity		Other		Total		Natural Gas		Electricity		Other		Total
	(In millions)
Net Assets (Liabilities) as of June 30	$	(54)	$	(4)	$	16	$	(42)	$	(362)	$	(96)	$	30	$	(428)
Transfers into Level 3 from Level 2	—		—		—		—		(3)		—		—		(3)
Transfers from Level 3 into Level 2	—		—		—		—		—		—		(5)		(5)
Total gains (losses)
Included in earnings(a)	1		79		(1)		79		(32)		40		(1)		7
Recorded in Regulatory liabilities	—		—		(2)		(2)		—		—		(4)		(4)
Purchases, issuances, and settlements


Settlements	25		(71)		(2)		(48)		84		(20)		(5)		59
Net Assets (Liabilities) as of September 30	$	(28)	$	4	$	11	$	(13)	$	(313)	$	(76)	$	15	$	(374)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30(a)	$	4	$	26	$	(6)	$	24	$	29	$	37	$	(5)	$	61
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30	$	—	$	—	$	1	$	1	$	—	$	—	$	(1)	$	(1)



	Nine Months Ended September 30, 2023								Nine Months Ended September 30, 2022
	Natural Gas		Electricity		Other		Total		Natural Gas		Electricity		Other		Total
	(In millions)
Net Assets (Liabilities) as of December 31	$	(255)	$	(33)	$	11	$	(277)	$	(179)	$	(45)	$	9	$	(215)

Transfers from Level 3 into Level 2	—		—		—		—		5		—				5
Total gains (losses)
Included in earnings(a)	163		109		1		273		(382)		22		1		(359)
Recorded in Regulatory liabilities	—		—		3		3		—		—		20		20
Purchases, issuances, and settlements


Settlements	64		(72)		(4)		(12)		243		(53)		(15)		175
Net Assets (Liabilities) as of September 30	$	(28)	$	4	$	11	$	(13)	$	(313)	$	(76)	$	15	$	(374)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30a)	$	94	$	94	$	(36)	$	152	$	(248)	$	(2)	$	(31)	$	(281)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at September 30	$	—	$	—	$	10	$	10	$	—	$	—	$	16	$	16


	Three Months		Nine Months
	(In millions)
Power Supply Cost Recovery	$	(89)	$	(321)
Weather	(105)		(222)
Base sales	(9)		(66)
Interconnection sales	(39)		(42)
COVID-19 voluntary refund amortization in 2022	(9)		(25)
Regulatory mechanism - RPS	(14)		11
Implementation of new rates	8		23
Rate Mix	26		50
Other regulatory mechanisms and other(a)	10		19
	$	(221)	$	(573)