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Conventional Hydroelectric Power Plants in Washington
U.S. Energy Information Administration (Forms EIA-860/860M).
Power plants
68
Total nameplate capacity
20,070.7 MW
Generating units
265
National rank (conventional hydroelectric capacity)
#1
Every conventional hydroelectric plant in Washington
| Plant | Operator | Units | Capacity |
|---|---|---|---|
| Grand Coulee | U S Bureau of Reclamation | 33 | 6,809 MW |
| Chief Joseph | USACE Northwestern Division | 19 | 1,743.8 MW |
| Rocky Reach | PUD No 1 of Chelan County | 11 | 1,349.2 MW |
| Wanapum | PUD No 2 of Grant County | 10 | 1,220 MW |
| Boundary | City of Seattle - (WA) | 6 | 1,159.7 MW |
| Priest Rapids | PUD No 2 of Grant County | 10 | 950 MW |
| Wells | PUD No 1 of Douglas County | 9 | 789.4 MW |
| Lower Granite | USACE Northwestern Division | 5 | 675 MW |
| Lower Monumental | USACE Northwestern Division | 5 | 675 MW |
| Little Goose | USACE Northwestern Division | 4 | 540 MW |
| Rock Island | PUD No 1 of Chelan County | 15 | 514.2 MW |
| Ross | City of Seattle - (WA) | 4 | 450 MW |
| Ice Harbor | USACE Northwestern Division | 4 | 423 MW |
| Mossyrock | City of Tacoma - (WA) | 2 | 300 MW |
| Swift 1 | PacifiCorp | 3 | 240 MW |
| Gorge | City of Seattle - (WA) | 4 | 207.3 MW |
| Diablo | City of Seattle - (WA) | 4 | 182.4 MW |
| Mayfield | City of Tacoma - (WA) | 4 | 162 MW |
| Merwin | PacifiCorp | 4 | 136 MW |
| Yale | PacifiCorp | 2 | 134 MW |
| H M Jackson | PUD No 1 of Snohomish County | 4 | 111.8 MW |
| Upper Baker | Puget Sound Energy Inc | 2 | 104.8 MW |
| Lower Baker | Puget Sound Energy Inc | 2 | 103.9 MW |
| Summer Falls Power Plant | Columbia Basin Hydropower | 2 | 92 MW |
| Box Canyon | PUD No 1 of Pend Oreille County | 4 | 90 MW |
| Cushman 2 | City of Tacoma - (WA) | 5 | 84.6 MW |
| Cowlitz Falls | PUD No 1 of Lewis County | 2 | 70 MW |
| Long Lake | Avista Corp | 4 | 70 MW |
| LaGrande | City of Tacoma - (WA) | 5 | 64 MW |
| Chelan | PUD No 1 of Chelan County | 2 | 59.2 MW |
| Alder | City of Tacoma - (WA) | 2 | 51 MW |
| Cushman 1 | City of Tacoma - (WA) | 2 | 50.4 MW |
| Little Falls (WA) | Avista Corp | 4 | 43.2 MW |
| Snoqualmie 2 | Puget Sound Energy Inc | 2 | 38.7 MW |
| Nine Mile | Avista Corp | 4 | 37.6 MW |
| Cedar Falls (WA) | City of Seattle - (WA) | 2 | 30 MW |
| Packwood | Energy Northwest - Packwood | 1 | 27.5 MW |
| Main Canal Headworks | Columbia Basin Hydropower | 1 | 26.8 MW |
| Twin Falls Hydro | Central Rivers Power US, LLC | 2 | 24 MW |
| Electron | Electron Hydro LLC | 4 | 22.8 MW |
| Upriver Dam Hydro Plant | City of Spokane | 5 | 17.6 MW |
| South Fork Tolt | City of Seattle - (WA) | 1 | 16.8 MW |
| Monroe Street | Avista Corp | 1 | 14.8 MW |
| Tieton Dam Hydro Electric Project | City of Burbank Water and Power | 2 | 13.8 MW |
| Roza | U S Bureau of Reclamation | 1 | 12.9 MW |
| Wynoochee | City of Tacoma - (WA) | 1 | 12.8 MW |
| Snoqualmie | Puget Sound Energy Inc | 5 | 12.8 MW |
| Koma Kulshan | Eagle Creek Renewable Energy, LLC | 1 | 12 MW |
| Yelm | City of Centralia - (WA) | 3 | 12 MW |
| Chandler | U S Bureau of Reclamation | 2 | 12 MW |
| Upper Falls | Avista Corp | 1 | 10 MW |
| McNary Dam Fish Attraction Project | Northern Wasco County PUD | 1 | 10 MW |
| Youngs Creek Hydroelectric Project | PUD No 1 of Snohomish County | 1 | 7.5 MW |
| Russell D Smith | Columbia Basin Hydropower | 1 | 6.1 MW |
| Hancock Creek Hydroelectric Project | PUD No 1 of Snohomish County | 1 | 6 MW |
| Calligan Creek Hydroelectric Project | PUD No 1 of Snohomish County | 1 | 6 MW |
| Weeks Falls | Eagle Creek Renewable Energy, LLC | 1 | 4.3 MW |
| Black Creek | Black Creek Hydro Inc | 1 | 3.7 MW |
| Potholes East Canal 66.0 | Columbia Basin Hydropower | 1 | 2.3 MW |
| Twin Reservoirs | Walla Walla City of | 1 | 2.2 MW |
| Eltopia Branch Canal 4.6 | Columbia Basin Hydropower | 1 | 2.2 MW |
| Meyers Falls | Hydro Technology Systems Inc | 4 | 1.8 MW |
| Cowiche | Yakima-Tieton Irrigation Dist | 1 | 1.7 MW |
| Sheep Creek Hydro | Sheep Creek Hydro Inc | 2 | 1.6 MW |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | 2 | 1.6 MW |
| Nooksack Hydro | Puget Sound Hydro LLC | 1 | 1.5 MW |
| Lilliwaup Falls Generating | William G. Reed Jr | 7 | 1.4 MW |
| Skookumchuck | TransAlta Centralia Gen LLC | 1 | 1 MW |
Source: U.S. Energy Information Administration, Forms EIA-860 and EIA-860M. Nameplate capacity is the maximum rated output of the plant's generators.