Company: DTK
Filing Date: 2025-09-09
Form Type: 424B5
Source: 0001193125-25-198859
Chunk: 1

Company: DTE ENERGY CO
Filing Date: 2025-09-09
Form: 424B5
Chunk 1
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 notes on any securities exchange or automated quotation system. Investment in the notes involves risks. You should read carefully this prospectus supplement and the accompanying prospectus, including the section entitled “ Risk Factors” that begins on page S-7of this prospectus supplement, which describes some of these risks.

| Per 2023 Series C note(1)     |     | Price to 
 Public   |     | % |     | Underwriting 
 Discount     |     | % |     | Proceeds to Us  
 Before Expenses |     | % |
|:------------------------------|:----|:---------|:----|:--|:----|:-------------|:----|:--|:----|:----------------|:----|:--|
| Total for 2023 Series C notes |     | $        |     |   |     | $            |     |   |     | $               |     |   |
| Per 2025 Series I note(2)     |     |          |     | % |     |              |     | % |     |                 |     | % |
| Total for 2025 Series I notes |     | $        |     |   |     | $            |     |   |     | $               |     |   |

| (1) | Plus accrued interest from June 1, 2025 (the most recent interest payment date for the initial 2023 Series          
 C Notes) to, but excluding, the delivery date of the 2023 Series C notes, which is expected to be September , 2025. |

| (2) | Plus accrued interest from September  , 2025, if settlement occurs after that date. |

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the prospectus to which it relates is truthful or complete. Any representation to the contrary is a criminal offense. Delivery of the notes, in book-entry form only, will be made on or about September , 2025. Joint Book-Running Managers

| Barclays    BMO Capital Markets    MUFG    Truist Securities |

The date of this prospectus supplement is September , 2025.

This prospectus supplement and the accompanying prospectus and any free writing prospectus that we file with the Securities and Exchange Commission (“SEC”) contain and incorporate by reference information you should consider