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Jointly-Owned Utility Plant
12 Months Ended
Dec. 31, 2016
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.
Ownership information of the two utility plants as of December 31, 2016 was as follows:
 
Belle River
 
Ludington
Hydroelectric
Pumped Storage
In service date
1984-1985
 
1973
Total plant capacity
1,270 MW
 
2,010 MW
Ownership interest
(a)
 
49%
Investment in Property, plant, and equipment (in millions)
$
1,807

 
$
504

Accumulated depreciation (in millions)
$
1,049

 
$
184


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(a)
DTE Electric's ownership interest is 63% in Unit No. 1, 81% of the facilities applicable to Belle River used jointly by the Belle River and St. Clair Power Plants and 75% in common facilities used at Unit No. 2.
Belle River
The Michigan Public Power Agency (MPPA) has an ownership interest 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.