Business Update December 16, 2024 EXHIBIT 99.1

Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. 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 various 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 including, but not limited to, the following: the 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 our 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; 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 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; and the risks discussed in DTE Energy’s public filings with the Securities and Exchange Commission. New factors emerge from time to time. We 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. We 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. This document should also be read in conjunction with the Forward-Looking Statements section in DTE Energy’s public filings with the Securities and Exchange Commission.

Recent business development progress supports long-term growth • Significant legislation recently passed through the Michigan House and Senate — Championed legislation that expands eligibility and doubles state funding for energy assistance for low-income customers — Strongly advocated for legislation to provide sales and use tax exemptions for data centers that was passed by Michigan lawmakers; will be sent to the Governor for signature • Executed non-binding term sheet and moving toward definitive agreements for data center complex with Switch, a leading data center developer/ operator, to be supported by Hyperscaler tenant(s) and other AI and enterprise customers — Anticipated load ramping up to 1.4 GW from 2026 – 2032; load ramp supported by a portion of existing capacity and additional capital for renewable generation and energy storage projects — Expected location will include a site currently owned by DTE • University of Michigan approved agreement for a 110 MW data center to support a high-performance computing and AI research facility; ongoing discussions with additional data centers • Continuing to progress on project development at DTE Vantage — Executed an agreement to design, build, own and operate the central utility plant to serve Ford Motor Company’s new facility currently under construction in Marshall, MI — Finalizing a transaction to design, build, own, operate and maintain a 42 MW combined heat and power project serving a large industrial customer — Two additional combined heat and power projects expected to close in 2025 • Increased annualized dividend 7% to $4.36 per share 3

4 Well-positioned for growth; investing heavily in utilities and delivering premium shareholder value 1. J.D. Power 2024 Gas Utility Business Customer Satisfaction Study. Visit jdpower.com 2. Refer to the appendix for information regarding the reconciliation of operating earnings (non-GAAP) to reported earnings • Highly engaged employees focusing on delivering for customers; ranked #1 in customer satisfaction with business natural gas service in the Midwest by J.D. Power1 • Advancing regulatory proceedings to support improved system reliability; received rate order for DTE Gas in November and progressing towards constructive order at DTE Electric in January • Maintaining strong collaboration on business development in Michigan to attract a range of customers, including data centers • On track to achieve 2024 operating EPS2 guidance that provides 7% growth from 2023 original guidance midpoint; positioning for strong results in 2025 and beyond • Long-term operating EPS growth rate target of 6% - 8% — Executing customer-focused capital investment plan while maintaining affordability — Opportunity for significant incremental utility investment as we continue to advance our voluntary renewables program and increase focus on reliability — Non-utility earnings growth driven by custom energy solutions, carbon capture and sequestration and RNG projects — Providing 2025 - 2029 forward-looking disclosures on 2024 year-end earnings call