💧 Hydroelectric Power Plants in Washington

Washington operates 80 hydroelectric power plants totaling 21,600 MW of nameplate capacity. Annual generation: 61.4M MWh.

Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.

All Washington hydroelectric plants

Plant	City	County	Capacity	Operator
Grand Coulee	Grand Coulee	Grant County	6,809 MW	U S Bureau Of Reclamation
Chief Joseph	Bridgeport	Douglas County	2,456 MW	Usace Northwestern Division
Rocky Reach	Wenatchee	Chelan County	1,300 MW	Pud No 1 Of Chelan County
Wanapum	Beverly	Grant County	1,220 MW	Pud No 2 Of Grant County
Boundary	Metaline	Pend Oreille County	1,119 MW	City Of Seattle - (Wa)
Priest Rapids	Mattawa	Grant County	950 MW	Pud No 2 Of Grant County
Little Goose	Dayton	Columbia County	810 MW	Usace Northwestern Division
Lower Monumental	Kahlotus	Walla Walla County	810 MW	Usace Northwestern Division
Lower Granite	Pomeroy	Whitman County	810 MW	Usace Northwestern Division
Wells	Chelan	Chelan County	774 MW	Pud No 1 Of Douglas County
Rock Island	Wenatchee	Chelan County	629 MW	Pud No 1 Of Chelan County
Ice Harbor	Burbank	Walla Walla County	603 MW	Usace Northwestern Division
Ross	Rockport	Whatcom County	450 MW	City Of Seattle - (Wa)
Mossyrock	Silver Creek	Lewis County	300 MW	City Of Tacoma - (Wa)
Swift 1	Cougar	Skamania County	240 MW	Pacificorp
Gorge	Rockport	Whatcom County	207 MW	City Of Seattle - (Wa)
Diablo	Rockport	Whatcom County	182 MW	City Of Seattle - (Wa)
Mayfield	Silver Creek	Lewis County	162 MW	City Of Tacoma - (Wa)
Merwin	Ariel	Cowlitz County	136 MW	Pacificorp
Yale	Amboy	Cowlitz County	134 MW	Pacificorp
H M Jackson	Sultan	Snohomish County	112 MW	Pud No 1 Of Snohomish County
Upper Baker	Concrete	Whatcom County	105 MW	Puget Sound Energy Inc
Lower Baker	Concrete	Skagit County	104 MW	Puget Sound Energy Inc
Summer Falls Power Plant	Coulee City	Grant County	92 MW	Columbia Basin Hydropower
Box Canyon	Ione	Pend Oreille County	90 MW	Pud No 1 Of Pend Oreille County
Cushman 2	Shelton	Mason County	85 MW	City Of Tacoma - (Wa)
Swift 2	Cougar	Cowlitz County	72 MW	Pacificorp
Long Lake	Ford	Lincoln County	70 MW	Avista Corp
Cowlitz Falls	Randle	Lewis County	70 MW	Pud No 1 Of Lewis County
Lagrande	La Grande	Pierce County	64 MW	City Of Tacoma - (Wa)
Chelan	Wenatchee	Chelan County	59 MW	Pud No 1 Of Chelan County
Alder	La Grande	Pierce County	50 MW	City Of Tacoma - (Wa)
Little Falls (Wa)	Ford	Lincoln County	43 MW	Avista Corp
Cushman 1	Shelton	Mason County	43 MW	City Of Tacoma - (Wa)
Snoqualmie 2	Snoqualmie	King County	39 MW	Puget Sound Energy Inc
Nine Mile	Nine Mile	Spokane County	38 MW	Avista Corp
Cedar Falls (Wa)	North Bend	King County	30 MW	City Of Seattle - (Wa)
Packwood	Packwood	Lewis County	28 MW	Energy Northwest
Main Canal Headworks	Coulee City	Grant County	27 MW	Columbia Basin Hydropower
Twin Falls Hydro	North Bend	King County	24 MW	Central Rivers Power Us, Llc
Electron	Orting	Pierce County	23 MW	Electron Hydro Llc
Upriver Dam Hydro Plant	Spokane	Spokane County	18 MW	City Of Spokane
South Fork Tolt	North Bend	King County	17 MW	City Of Seattle - (Wa)
Monroe Street	Spokane	Spokane County	15 MW	Avista Corp
Tieton Dam Hydro Electric Project	Rimrock	Yakima County	14 MW	City Of Burbank Water And Power
Roza	Yakima	Yakima County	13 MW	U S Bureau Of Reclamation
Snoqualmie	Snoqualmie	King County	13 MW	Puget Sound Energy Inc
Wynoochee	Montesano	Grays Harbor County	13 MW	City Of Tacoma - (Wa)
Yelm	Yelm	Thurston County	12 MW	City Of Centralia - (Wa)
Chandler	Benton City	Benton County	12 MW	U S Bureau Of Reclamation
Koma Kulshan	Concrete	Whatcom County	12 MW	Eagle Creek Renewable Energy, Llc
Mcnary Dam Fish Attraction Project	Plymouth	Benton County	10 MW	Northern Wasco County Pud
Upper Falls	Spokane	Spokane County	10 MW	Avista Corp
Quincy Chute	Quincy	Grant County	9 MW	Pud No 2 Of Grant County
Youngs Creek Hydroelectric Project	Monroe	Snohomish County	8 MW	Pud No 1 Of Snohomish County
Pec Headworks	Moses Lake	Grant County	7 MW	Pud No 2 Of Grant County
Russell D Smith	Othello	Adams County	6 MW	Columbia Basin Hydropower
Calligan Creek Hydroelectric Project	Snoqualmie	King County	6 MW	Pud No 1 Of Snohomish County
Hancock Creek Hydroelectric Project	Snoqualmie	King County	6 MW	Pud No 1 Of Snohomish County
Weeks Falls	North Bend	King County	4 MW	Eagle Creek Renewable Energy, Llc
Black Creek	Snoqualmie	King County	4 MW	Black Creek Hydro Inc
Drop 2 (Wa)	Wapato	Yakima County	3 MW	Yakama Power
Newhalem	Rockport	Whatcom County	2 MW	City Of Seattle - (Wa)
Potholes East Canal 66.0	Pasco	Franklin County	2 MW	Columbia Basin Hydropower
Twin Reservoirs	Walla Walla	Walla Walla County	2 MW	Walla Walla City Of
Eltopia Branch Canal 4.6	Pasco	Franklin County	2 MW	Columbia Basin Hydropower
Cowiche	Tieton	Yakima County	2 MW	Yakima-Tieton Irrigation Dist
Meyers Falls	Kettle Falls	Stevens County	2 MW	Hydro Technology Systems Inc
Drop 3 (Wa)	Wapato	Yakima County	2 MW	Yakama Power
Sheep Creek Hydro	Northport	Stevens County	2 MW	Sheep Creek Hydro Inc
Rocky Brook Hydroelectric	Brinnon	Jefferson County	2 MW	Rocky Brook Electric Inc
Orchard Avenue 1	Yakima	Yakima County	2 MW	Yakima-Tieton Irrigation Dist
Nooksack Hydro	Glacier	Whatcom County	2 MW	Puget Sound Hydro Llc
Lilliwaup Falls Generating	Lilliwaup	Mason County	1 MW	William G. Reed Jr
Skookumchuck	Tenino	Thurston County	1 MW	Transalta Centralia Gen Llc
Sullivan Cr	Metaline Falls	Pend Oreille County	—	Pud No 1 Of Pend Oreille County
Condit	White Salmon	Klickitat County	—	Pacificorp
White River (Wa)	Sumner	Pierce County	—	Puget Sound Energy Inc
Glines Hydroelectric Project	Port Angeles	Clallam County	—	U S Bureau Of Reclamation
Elwha Hydroelectric Project	Port Angeles	Clallam County	—	U S Bureau Of Reclamation

Related

• All Hydroelectric plants nationwide
• All power plants in Washington
• Hydroelectric plants near me