Grand Coulee

General information

Waterway  Columbia River
Current status   Active license 
Type of facility Conventional Hydro, Pumped Storage
Mode of hydropower generation Peaking
Type of permit Reclamation

Ownership and operation

Owner Reclamation Pacific Northwest Region (PN)
Owner type Reclamation
Year first online (conventional hydro) 1941
Year first online (pumped storage) 1973
Transmission or distribution system owner Bonneville Power Administration

Power and generating capacity

Number of units 33
Total capacity from hydraulic turbine-generator units within each plant 6,495.0 MW
Average annual net hydropower generation 19,794,301.9 MWH
Total capacity from pumped storage turbine-generator units 314.0 MW
Pumped storage gross generation in megawatt hours for each powerplant 1,254,155.8 MWH

Grand Coulee Dam


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