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Jointly-Owned Utility Plant | 12 Months Ended
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Dec. 31, 2024
Jointly Owned Utility Plant, Net Ownership Amount [Abstract] |
Jointly-Owned Utility Plant | JOINTLY-OWNED UTILITY PLANT DTE Electric has joint ownership interest in two power plants, Belle River and Ludington Hydroelectric Pumped Storage. DTE Electric’s share of direct expenses of the jointly-owned plants are included in Fuel, purchased power, and gas — utility and Operation and maintenance expenses in the DTE Energy Consolidated Statements of Operations and Fuel and purchased power— utility and Operation and maintenance expenses in the DTE Electric Consolidated Statements of Operations. DTE Electric's ownership information of the two utility plants as of December 31, 2024 was as follows:
| Belle River |  | Ludington Hydroelectric Pumped Storage
In-service date | 1984-1985 |  | 1973
Total plant capacity | 1,270 MW |  | 2,290 MW
Ownership interest | 81% |  | 49%
Investment in Property, plant, and equipment (in millions) | $ | 2,053 |  |  | $ | 656 |
Accumulated depreciation (in millions) | $ | 1,140 |  |  | $ | 160 |
Belle River The Michigan Public Power Agency (MPPA) has ownership interests in Belle River Unit No. 1 and other related facilities. The MPPA is entitled to 19% of the total capacity and energy of the plant and is responsible for the same percentage of the plant’s operation, maintenance, and capital improvement costs. Ludington Hydroelectric Pumped Storage Consumers Energy Company has an ownership interest in the Ludington Hydroelectric Pumped Storage Plant. Consumers Energy is entitled to 51% of the total capacity and energy of the plant and is responsible for the same percentage of the plant’s operation, maintenance, and capital improvement costs. For discussion of the ongoing contract dispute related to the Ludington Plant, see Note 17 to the Consolidated Financial Statements, "Commitments and Contingencies."

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