EEI Financial Conference November 9 - 11, 2025 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 or increase power consumption; changes in the financial condition of significant customers and strategic partners; the potential for losses on investments, including nuclear decommissioning trust and benefit plan assets and the related increases in future expense and contributions; access to capital markets and the results of other financing efforts which can be affected by credit agency ratings; instability in capital markets which could impact availability of short and long-term financing; impacts of inflation, tariffs, and the timing and extent of changes in interest rates; the level of borrowings; the potential for increased costs or delays in completion of significant capital projects; changes in, and application of, federal, state, and local tax laws and their interpretations, including the Internal Revenue Code, regulations, rulings, court proceedings, and audits; the effects of weather and other natural phenomena, including climate change, on operations and sales to customers, and purchases from suppliers; unplanned outages at our generation plants; employee relations and the impact of collective bargaining agreements; the availability, cost, coverage, and terms of insurance and stability of insurance providers; cost reduction efforts and the maximization of generation and distribution system performance; the effects of competition; changes in and application of accounting standards and financial reporting regulations; changes in federal or state laws and their interpretation with respect to regulation, energy policy, and other business issues; successful execution of new business development and future growth plans; contract disputes, binding arbitration, litigation, and related appeals; the ability of the electric and gas utilities to achieve goals for carbon emission reductions; and the risks discussed in 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.

Continuing to deliver exceptional results for our stakeholders; well positioned for long-term growth 3 1. Refer to the appendix for information regarding the reconciliation of operating earnings (non-GAAP) to reported earnings ✓ Highly engaged team committed to delivering best-in-class results for our customers, communities and investors ✓ Well positioned to achieve high end of operating EPS1 guidance in 2025 ✓ 2026 operating EPS early outlook provides 6% - 8% growth over 2025 guidance midpoint; well positioned to achieve high end of the range ✓ Executed 1.4 GW data center agreement with an additional ~3 GW in late- stage negotiations • Data center development and investments in reliability and cleaner generation drive a $6.5 billion increase to our 5-year capital investment plan • Additional data center opportunities provide upside to long-term plan ✓ Investment plan supports shift to higher quality utility operating earnings over the 5-year plan; utility earnings targeted to increase to 93% of overall earnings by 2030 ✓ Long-term operating EPS growth rate target of 6% - 8% through 2030, with 2026 guidance midpoint as the base; confident we will reach the high end of our targeted range in each year driven by RNG tax credits and the flexibility they provide 2025 2026 2027 2028 2029 2030 $7.09 - $7.23 $7.59 - $7.73 EPS Guidance Range Confident to reach the high end of 6% - 8% operating EPS guidance each year (operating EPS guidance) Current target is high end of guidance range in each year Midpoint of 6% - 8% long-term operating EPS growth rate 8% 6%

Data center development and investments in reliability and cleaner generation drive a $6.5 billion increase to our 5-year capital investment plan 4 1. Refer to the appendix for information regarding the reconciliation of operating earnings (non-GAAP) to reported earnings $24 $4 ~$2 2025 - 2029 prior plan 2026 - 2030 current plan $30 $36.5 DTE Electric DTE Gas DTE Vantage22 % 5-year investment plan (billions) ~$2 $4.5 $30 • DTE Electric investments support data center development, cleaner generation transformation and distribution investments focused on continued reliability improvements — Additional data center opportunities provide upside to long-term plan • DTE Gas capital investment plan supports system reliability and infrastructure renewal • DTE Vantage will continue to focus on investments in utility-like, long-term, fixed-fee contracted projects • Investment plan supports operating EPS1 growth rate target of 6% - 8% through 2030; confident we will reach the high end of our targeted range in each year driven by RNG tax credits and the flexibility they provide — Utility operating earnings targeted to increase to 93% of overall earnings by 2030 — Data center opportunities help support this strategic shift, mitigating the impact of a more conservative DTE Vantage growth outlook driven largely by commodity pricing assumptions