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Jointly-Owned Utility Plant
12 Months Ended
Dec. 31, 2021
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, 2021 was as follows:
Belle RiverLudington
Hydroelectric
Pumped Storage
In-service date1984-19851973
Total plant capacity1,270 MW2,220 MW
Ownership interest81%49%
Investment in Property, plant, and equipment (in millions)$1,952 $618 
Accumulated depreciation (in millions)$1,007 $128 
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.