2. U.S. Power Plants
  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
Big Horn Wind IIAvangrid Power LLCBickleton, WAAvangrid Renewables, LLC (AVRN)111.8 GWhDec 2010May 2026 Wind
Big Horn Wind ProjectAvangrid Power LLCBickelton, WAAvangrid Renewables, LLC (AVRN)508.0 GWhSep 2006May 2026 Wind
Black CreekBlack Creek Hydro IncSnoqualmie, WAPuget Sound Energy, Inc. (PSEI)8.7 GWhJan 1994Dec 2025 Water
Boulder ParkAvista CorpSpokane, WAAvista Corporation (AVA)125.8 GWhApr 2002Dec 2025 Natural Gas
BoundaryCity of Seattle - (WA)Metaline, WASeattle City Light (SCL)3.8 TWhJul 1967May 2026 Water
Box CanyonPUD No 1 of Pend Oreille County - (WA)Ione, WAAvista Corporation (AVA)459.8 GWhMay 1955Dec 2025 Water

Browse Power Plants By Washington Counties

Figures are based on May 2026 generation numbers.
CountyState RankActive PlantsMay 2026 Generation
Adams County, WA# 224475.8 GWh
Benton County, WA# 479.4 TWh
Chelan County, WA# 2613.4 TWh
Clark County, WA# 1621.3 TWh
Columbia County, WA# 1043.3 TWh
Cowlitz County, WA# 963.7 TWh
Douglas County, WA# 3111.5 TWh
Franklin County, WA# 29310.9 GWh
Garfield County, WA# 182802.3 GWh
Grant County, WA# 1929.0 TWh
Grays Harbor County, WA# 1262.4 TWh
Jefferson County, WA# 3038.2 GWh
King County, WA# 2412392.2 GWh
Kittitas County, WA# 1791.2 TWh
Klickitat County, WA# 6175.4 TWh
CountyState RankActive PlantsMay 2026 Generation
Lewis County, WA# 587.3 TWh
Lincoln County, WA# 192624.1 GWh
Mason County, WA# 273273.6 GWh
Pend Oreille County, WA# 834.2 TWh
Pierce County, WA# 13142.1 TWh
Skagit County, WA# 1541.5 TWh
Skamania County, WA# 211508.0 GWh
Snohomish County, WA# 259359.3 GWh
Spokane County, WA# 207560.3 GWh
Stevens County, WA# 264302.8 GWh
Thurston County, WA# 234445.4 GWh
Walla Walla County, WA# 1143.3 TWh
Whatcom County, WA# 7134.2 TWh
Whitman County, WA# 1461.8 TWh
Yakima County, WA# 2812247.1 GWh