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  3. Washington Power Plants

Directory of Power Plants in Washington

List of All Washington Power Plants

Displaying Results 1 to 6 of 6
Plant NameUtilityLocationBalancing AuthorityAnnual GenerationPlant DateLast UpdateFuel Types
BoundaryCity of Seattle - (WA)Metaline, WASeattle City Light (SCL)3.9 TWhJul 1967Jun 2026 Water
Big Horn Wind ProjectAvangrid Power LLCBickelton, WAAvangrid Renewables, LLC (AVRN)514.1 GWhSep 2006Jun 2026 Wind
Box CanyonPUD No 1 of Pend Oreille County - (WA)Ione, WAAvista Corporation (AVA)459.8 GWhMay 1955Dec 2025 Water
Boulder ParkAvista CorpSpokane, WAAvista Corporation (AVA)125.8 GWhApr 2002Dec 2025 Natural Gas
Big Horn Wind IIAvangrid Power LLCBickleton, WAAvangrid Renewables, LLC (AVRN)114.5 GWhDec 2010Jun 2026 Wind
Black CreekBlack Creek Hydro IncSnoqualmie, WAPuget Sound Energy, Inc. (PSEI)8.7 GWhJan 1994Dec 2025 Water

Browse Power Plants By Washington Counties

Figures are based on June 2026 generation numbers.
CountyState RankActive PlantsJun 2026 Generation
Grant County, WA# 1929.8 TWh
Chelan County, WA# 2613.6 TWh
Douglas County, WA# 3111.7 TWh
Benton County, WA# 4710.1 TWh
Lewis County, WA# 587.3 TWh
Klickitat County, WA# 6175.4 TWh
Pend Oreille County, WA# 734.4 TWh
Whatcom County, WA# 8134.1 TWh
Cowlitz County, WA# 963.7 TWh
Columbia County, WA# 1043.3 TWh
Walla Walla County, WA# 1143.2 TWh
Grays Harbor County, WA# 1262.1 TWh
Pierce County, WA# 13142.1 TWh
Whitman County, WA# 1461.8 TWh
Skagit County, WA# 1541.5 TWh
CountyState RankActive PlantsJun 2026 Generation
Kittitas County, WA# 1691.2 TWh
Clark County, WA# 172812.4 GWh
Garfield County, WA# 182811.6 GWh
Lincoln County, WA# 192624.1 GWh
Spokane County, WA# 207560.0 GWh
Skamania County, WA# 211503.6 GWh
Adams County, WA# 224456.9 GWh
Thurston County, WA# 234454.8 GWh
King County, WA# 2412392.2 GWh
Snohomish County, WA# 259359.3 GWh
Stevens County, WA# 264302.8 GWh
Mason County, WA# 273273.6 GWh
Yakima County, WA# 2812269.1 GWh
Franklin County, WA# 29310.9 GWh
Jefferson County, WA# 3038.2 GWh