This is a list of electricity-generating power stations in the U.S. state of Washington, sorted by type and name. These include facilities that are located in more than one state. In 2024, Washington had a total summer capacity of 31 GW through all of its power plants, and a net generation of 102,397 GWh. The electrical energy generation mix in 2025 was 63.2% hydroelectric, 15.8% natural gas, 8.3% wind, 7.5% nuclear, 3.1% coal, and 1.1% biomass which includes most refuse-derived fuel. Utility-scale solar and other gases generated most of the remaining 0.9%. Small-scale photovoltaic installations generated an additional net 722 GWh to the state's electrical grid; an amount nearly 15 percent larger than Washington's utility-scale photovoltaic plants.
Washington routinely delivers one-quarter of U.S. hydroelectric generation, and hosts the nation's largest capacity power station at Grand Coulee Dam. 60% of Washington households use electricity as their primary heating fuel, unlike most households in other U.S. states that typically utilize natural gas.
Fossil-fuel power stations
Data from the U.S. Energy Information Administration serves as a general reference.
Coal Name Location Coordinates Capacity(MW) Operator Year opened Scheduledretirement Refs Centralia Power Plant Centralia 670 TransAlta Corporation 1972 Until end of special orders
Natural gas Name Location Coordinates Capacity(MW) Operator Year opened Scheduledretirement Refs Boulder Park Generation Station Spokane Valley 24 Avista 2002 Chehalis Generation Facility Chehalis 477 PacifiCorp 2003 Encogen Generating Station Bellingham 159 Puget Sound Energy 1993 Fredonia Generating Station Skagit County 280 Puget Sound Energy 1984, 2001 Frederickson Generating Station Frederickson 134 Puget Sound Energy 1981 Frederickson 1 Generating Station Frederickson 246 Capital Power 2002 Goldendale Generating Station Goldendale 263 Puget Sound Energy 2004 Grays Harbor Energy Center Satsop 604 Invenergy 2008 March Point Cogeneration Plant Anacortes 120 March Point Cogeneration Company 1991, 1993 Mint Farm Generating Station Longview 270 Puget Sound Energy 2008 Northeast (WA) Spokane 45 Avista 1978 River Road Generating Plant Vancouver 220 Clark Public Utilities 2010 Sumas Generating Station Sumas 125 Puget Sound Energy 1993 Ferndale Generating Station Ferndale 270 Tenaska Energy 1994 Whitehorn Generating Station Ferndale 134 Puget Sound Energy 1974, 1981
Nuclear power stations Name Location Coordinates Capacity(MW) Operator Year opened Notes Columbia Generating Station Benton County 1,150 Energy Northwest 1984 Only US nuclear plant designed to be ramped up and down. Response time 1 hour
Renewable power stations Data from the U.S. Energy Information Administration serves as a general reference.
Hydroelectric
Name Location Coordinates River Capacity(MW) Operator Year opened Alder Dam Pierce County Nisqually River 50 Tacoma Power 1945 Bonneville Dam Skamania CountyMultnomah County, Oregon Columbia River 1,093 United States Army Corps of Engineers 1938, 1981 Boundary Dam Metaline Falls, Washington Pend Oreille River 1,024 Seattle City Light 1967 Box Canyon Dam Ione, Washington Pend Oreille River 90 Pend Oreille PUD 1955 Cedar Falls Dam Cedar Falls, Washington Cedar River 30 Seattle City Light 1921, 1929 Chief Joseph Dam Douglas CountyOkanogan County Columbia River 2,620 United States Army Corps of Engineers 1958, 1973 Cowlitz Falls Dam Lewis County Cowlitz River 70 Lewis County Public Utilities District 1994 Cushman Dam No. 1 Mason County Skokomish River 43 Tacoma Power 1926 Cushman Dam No. 2 Mason County Skokomish River 81 Tacoma Power 1930–1931,1952, 2013 Diablo Dam Whatcom County Skagit River 159 Seattle City Light 1936–1937 Electron Hydroelectric Project Pierce County Puyallup River 26 Electron Hydro, LLC. 1904, 1929 Gorge Dam Whatcom County Skagit River 199 Seattle City Light 1924, 1929,1951 Grand Coulee Dam Grant CountyOkanogan County Columbia River 6,809 United States Bureau of Reclamation 1941, 1975 Henry M. Jackson Dam Snohomish County Sultan River 112 Snohomish County Public Utility District 1984 Ice Harbor Dam Franklin CountyWalla Walla County Snake River 603 United States Army Corps of Engineers 1962,1975–1976 Lake Chelan Dam Chelan, Washington Chelan River 62.1 Chelan County Public Utility District 1927–1928 LaGrande Dam Pierce County Nisqually River 64 Tacoma Power 1912, 1945 Little Goose Dam Columbia CountyWhitman County Snake River 932 United States Army Corps of Engineers 1970–1971,1978 Long Lake Dam Lincoln County Spokane River 71 Avista Utilities 1915, 1919,1924 Lower Baker Dam Skagit County Baker River 79 Puget Sound Energy 1960, 2013 Lower Granite Dam Garfield CountyWhitman County Snake River 932 United States Army Corps of Engineers 1975, 1978 Lower Monumental Dam Franklin CountyWalla Walla County Snake River 932 United States Army Corps of Engineers 1969–1970,1979 Mayfield Dam Lewis County Cowlitz River 162 Tacoma Power 1963, 1983 Merwin Dam Clark CountyCowlitz County Lewis River 136 PacifiCorp 1931–1932,1949, 1958 Mossyrock Dam Lewis County Cowlitz River 300 Tacoma Power 1968 Priest Rapids Dam Grant CountyYakima County Columbia River 955 Grant County Public Utility District 1959–1961 Rock Island Dam Chelan CountyDouglas County Columbia River 660 Chelan County Public Utility District 1931–1932,1952–1953,1978–1979 Rocky Reach Dam Chelan CountyDouglas County Columbia River 1,300 Chelan County Public Utility District 1961,1973–1974 Ross Dam Whatcom County Skagit River 353 Seattle City Light 1952–1956 Snoqualmie Falls Hydroelectric Plant Snoqualmie, Washington Snoqualmie River 54 Puget Sound Energy 1898, 1957,2013 Swift Dam Skamania County Lewis River 240 PacifiCorp 1958–1959 Upper Baker Dam Whatcom County Baker River 91 Puget Sound Energy 1959 Wanapum Dam Grant CountyKittitas County Columbia River 1,038 Grant County Public Utility District 2011–2018 Wells Dam Chelan CountyDouglas County Columbia River 851 Douglas County Public Utility District 1967–1969 Wynoochee Dam Grays Harbor County Wynoochee River 12.8 Tacoma Power 1994 Yale Dam Clark CountyCowlitz County Lewis River 134 PacifiCorp 1953
Wind
Name Location Coordinates Capacity(MW) Year opened Wild Horse Wind Farm Kittitas County 273 2006, 2009 Marengo Wind Farm Columbia County 211 2007, 2008 White Creek Wind Farm Klickitat County 205 2007 Big Horn Wind Farm Klickitat County 200 2006 Big Horn 2 Klickitat County 50 2011 Palouse Wind Farm Whitman County 105 2012 Stateline Wind Farm(Vansycle Wind) Walla Walla County 177 2001 Hopkins Ridge Wind Farm Columbia County 157 2005, 2008 Harvest Wind Farm Klickitat County 99 2009 Nine Canyon Wind Farm Benton County 99 2002 Goodnoe Hills Wind Farm Klickitat County 94 2008 Coastal Energy Grays Harbor County 6 2010 Lower Snake River Wind Project Garfield County 342.7 2012 Juniper Canyon Klickitat County 151.2 2011 Kittitas Valley Wind Farm(Sagebrush Wind) Kittitas County 100.8 2010 Vantage Wind Power Project Kittitas County 90 2010 Linden Ranch Klickitat County 50 2010 Windy Flats Klickitat County 262.4 2009 Windy Point(Tuolumne Wind) Klickitat County 137.6 2009 Tucannon River Wind Farm Dayton, Washington 267 2014 Tucannon River Wind Farm Swauk Valley Ranch Wind Kittitas County 4.3 2012 Renewable Project Northwest Skookumchuck Wind Farm Lewis CountyThurston County 136 2020
Solar Only utility scale projects larger than 1 MW are listed. Name Location Coordinates Capacity(MWAC) Year opened Adams Nielson Solar Farm Adams County 28 2018 Adams Nielson Solar FarmCamas Solar ProjectKittitas County 6.72022Horn Rapids SolarBenton County 42020 Lund Hill Solar Project Klickitat County 194 2022 Lund Hill Solar ProjectPenstemon Solar ProjectKittitas County 6.72022Urtica Solar ProjectKittitas County 6.72022
Municipal solid waste (MSW) combustion Name Location Coordinates Capacity(MW) Year opened Spokane Waste to Energy (WTE) Facility Spokane County 22 1991 Spokane's Waste to Energy (WTE) Facility
Former facilities Station Location Type Capacity(MW) Status Year opened Year closed Satsop Nuclear Power Plant Grays Harbor County Nuclear 2480 Canceled N/A 1977Condit Hydroelectric Project Klickitat County Hydroelectric 14.7 Demolished 1913 2011 Elwha Dam Clallam County Hydroelectric 14.8 Demolished 1913 2012 Glines Canyon Dam Clallam County Hydroelectric 13.3 Demolished 1927 2014
See also
List of power stations in the United States
Notes
References
External links Renewable Northwest Project: Renewable Energy Projects