List of power stations in Washington

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 2020, Washington had a total summer capacity of 30,669 MW through all of its power plants, and a net generation of 116,114 GWh.[2] The corresponding electrical energy generation mix in 2021 was 64.6% hydroelectric, 14.4% natural gas, 7.8% nuclear, 2.9% coal, 8.7% wind, and 1.3% biomass which includes most refuse-derived fuel. Petroleum and utility-scale solar facilities generated most of the remaining 0.3%. Small-scale photovoltaic installations generated an additional net 311 GWh to the state's electrical grid; an amount six times larger than Washington's utility-scale photovoltaic plants.[1]

Sources of Washington utility-scale electricity generation:
full-year 2021[1]

  Hydroelectric (64.6%)
  Natural Gas (14.4%)
  Wind (8.7%)
  Nuclear (7.8%)
  Coal (2.9%)
  Biomass (1.3%)
  Other (0.3%)

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.[3]

Nuclear power stations
Name Location Coordinates Capacity (MW) Operator Year
opened		 Notes
Columbia Generating Station Benton County 46°28′16″N 119°20′2″W 1,150 Energy Northwest 1984 Only US nuclear plant designed to be ramped up and down. Response time 1 hour

Fossil-fuel power stations

Data from the U.S. Energy Information Administration serves as a general reference.[4]

Name Location Coordinates Type Capacity (MW) Operator Year
opened		 Scheduled
retirement		 Refs
Boulder Park Generation Station Spokane Valley 47°41′49″N 117°08′50″W Natural Gas 24 Avista 2002 [4]
Centralia Power Plant Centralia 46°45′21″N 122°51′35″W Coal 670 TransAlta Corporation 1972 2025 [4]
Chehalis Generation Facility Chehalis 46°37′20″N 122°54′51″W Natural Gas 477 PacifiCorp 2003 [4]
Encogen Generating Station Bellingham 48°44′43″N 122°29′11″W Natural Gas 159 Puget Sound Energy 1993 [4]
Fredonia Generating Station Skagit 48°27′21″N 122°26′09″W Natural Gas 280 Puget Sound Energy 1984/2001 [4]
Frederickson Generating Station Frederickson 47°04′47″N 122°21′54″W Natural Gas 134 Puget Sound Energy 1981 [4]
Frederickson 1 Generating Station Frederickson 47°05′10″N 122°21′56″W Natural Gas 246 EPCOR 2002 [4]
Goldendale Generating Station Goldendale 45°48′41″N 120°49′59″W Natural Gas 263 Puget Sound Energy 2004 [4]
Grays Harbor Energy Center[5] Satsop 46°58′09″N 123°28′48″W Natural Gas 604 Invenergy 2008 [4]
March Point Cogeneration Plant Anacortes 48°28′15″N 122°33′36″W Natural Gas 120 March Point Cogeneration Company 1991/1993 [4]
Mint Farm Generating Station Longview 46°08′24″N 122°59′06″W Natural Gas 270 Puget Sound Energy 2008 [4]
Northeast (WA) Spokane 47°44′06″N 117°22′14″W Natural Gas 45 Avista 1978 [4]
River Road Generating Plant Vancouver 45°39′00″N 122°43′29″W Natural Gas 220 Clark Public Utilities 2010 [4]
Sumas Generating Station Sumas 48°59′26″N 122°16′24″W Natural Gas 125 Puget Sound Energy 1993 [4]
Ferndale Generating Station Ferndale 48°49′44″N 122°41′06″W Natural Gas 270 Tenaska Energy 1994 [4]
Whitehorn Generating Station Ferndale 48°53′08″N 122°45′06″W Natural Gas 134 Puget Sound Energy 1974/1981 [4]

Renewable power stations

Data from the U.S. Energy Information Administration serves as a general reference.[4]

Hydroelectric
See also: List of dams and reservoirs in Washington
Name Location Coordinates River Capacity (MW) Operator Year
opened		 Ref
Alder Dam Pierce County, Washington 46°48′06″N 122°18′37″W Nisqually River 50 Tacoma Power 1945 [6]
Bonneville Dam Skamania County, Washington
Multnomah County, Oregon		 45°38′39″N 121°56′28″W Columbia River 1,093 United States Army Corps of Engineers 1938/1981 [4] electricity generated in Oregon
Boundary Dam Metaline Falls, Washington 48°59′14″N 117°20′52″W Pend Oreille River 1,024 Seattle City Light 1967 [4]
Box Canyon Dam Ione, Washington 48°46′51″N 117°25′06″W Pend Oreille River 90 Pend Oreille PUD 1955 [4]
Cedar Falls Dam Cedar Falls, Washington 47°25′09″N 121°46′55″W Cedar River (Washington) 30 Seattle City Light 1921/1929 [4]
Chief Joseph Dam Douglas County, Washington
Okanogan County, Washington		 47°59′42″N 119°38′25″W Columbia River 2,620 United States Army Corps of Engineers 1958/1973 [4]
Cowlitz Falls Dam Lewis County, Washington 46°27′58″N 122°06′35″W Cowlitz River 70 Lewis County Public Utilities District 1994 [7]
Cushman Dam No. 1 Mason County, Washington 47°25′05″N 123°13′31″W Skokomish River 43 Tacoma Power 1926 [8]
Cushman Dam No. 2 Mason County, Washington 47°22′11″N 123°09′37″W Skokomish River 81 Tacoma Power 1930-1931/
1952/2013		 [8]
Diablo Dam Whatcom County, Washington 48°42′50″N 121°07′54″W Skagit River 159 Seattle City Light 1936-1937 [4]
Electron Hydroelectric Project Pierce County, Washington 46°59′28″N 122°10′30″W Puyallup River 26 Electron Hydro, LLC. 1904/1929 [4]
Gorge Dam Whatcom County, Washington 48°41′53″N 121°12′31″W Skagit River 199 Seattle City Light 1924/1929/
1951		 [4]
Grand Coulee Dam Grant and Okanogan counties 47°57′27″N 118°58′38″W Columbia River 6,809 United States Bureau of Reclamation 1941/1975 [4] Includes 314 MW pumped-storage
Henry M. Jackson Dam Snohomish County, Washington 47°54′30″N 121°48′52″W Sultan River 112 Snohomish County Public Utility District 1984 [9]
Ice Harbor Dam Franklin and Walla Walla counties 46°14′59″N 118°52′47″W Snake River 603 United States Army Corps of Engineers 1962/
1975-1976		 [4]
Lake Chelan Dam Chelan, Washington 47°50′05″N 120°00′48″W Chelan River 62.1 Chelan County Public Utility District 1927-1928 [10]
LaGrande Dam Pierce County, Washington 46°49′58″N 122°19′11″W Nisqually River 64 Tacoma Power 1912/1945 [11]
Little Goose Dam Columbia and Whitman counties 46°35′02″N 118°01′38″W Snake River 932 United States Army Corps of Engineers 1970-1971/
1978		 [4]
Long Lake Dam Lincoln County, Washington 47°50′04″N 117°50′10″W Spokane River 71 Avista Utilities 1915/1919/
1924		 [12]
Lower Baker Dam Skagit County, Washington 48°32′52″N 121°44′27″W Baker River (Washington) 79 Puget Sound Energy 1960/2013 [4]
Lower Granite Dam Garfield and Whitman counties 46°39′34″N 117°25′46″W Snake River 932 United States Army Corps of Engineers 1975/1978 [4]
Lower Monumental Dam Franklin and Walla Walla counties 46°33′49″N 118°32′23″W Snake River 932 United States Army Corps of Engineers 1969-1970/
1979		 [4]
Mayfield Dam Lewis County, Washington 46°30′13″N 122°35′19″W Cowlitz River 162 Tacoma Power 1963/1983 [13]
Merwin Dam Clark and Cowlitz counties 45°57′24″N 122°33′16″W Lewis River (Washington) 136 PacifiCorp 1931-1932/
1949/1958		 [4]
Mossyrock Dam Lewis County, Washington 46°32′05″N 122°25′29″W Cowlitz River 300 Tacoma Power 1968 [14]
Priest Rapids Dam Grant and Yakima counties 46°38′42″N 119°54′29″W Columbia River 955 Grant County Public Utility District 1959-1961 [4]
Rock Island Dam Chelan and Douglas counties 47°20′46″N 120°05′30″W Columbia River 660 Chelan County Public Utility District 1931-1932/
1952-1953/
1978-1979		 [4]
Rocky Reach Dam Chelan and Douglas counties 47°32′01″N 120°17′43″W Columbia River 1,300 Chelan County Public Utility District 1961/
1973-1974		 [4]
Ross Dam Whatcom County, Washington 48°43′57″N 121°04′04″W Skagit River 353 Seattle City Light 1952-1956 [4]
Snoqualmie Falls Hydroelectric Plant Snoqualmie, Washington 47°32′24″N 121°50′13″W Snoqualmie River 54 Puget Sound Energy 1898/1957/
2013		 [4]
Swift Dam Skamania County, Washington 46°03′39″N 122°12′06″W
46°03′34″N 122°15′34″W		 Lewis River (Washington) 240 PacifiCorp 1958-1959 [4]
Upper Baker Dam Whatcom County, Washington 48°38′56″N 121°41′27″W Baker River (Washington) 91 Puget Sound Energy 1959 [4]
Wanapum Dam Grant and Kittitas counties 46°52′23″N 119°58′13″W Columbia River 1,038 Grant County Public Utility District 2011-2018 [4]
Wells Dam Chelan and Douglas counties 47°56′49″N 119°51′55″W Columbia River 851 Douglas County Public Utility District 1967-1969 [4]
Wynoochee Dam Grays Harbor County, Washington 47°23′06″N 123°36′19″W Wynoochee River 12.8 Tacoma Power 1994 [4]
Yale Dam Clark and Cowlitz counties 45°57′46″N 122°20′08″W Lewis River (Washington) 134 PacifiCorp 1953 [4]

Wind
See also: Wind power in Washington (state)
NameLocationCoordinatesCapacity
(MW)		Year
opened		Ref
Wild Horse Wind FarmKittitas County47°01′07″N 120°12′58″W2732006/2009[15]
Marengo Wind FarmColumbia County46°22′27″N 117°46′36″W2112007/2008[15][16]
White Creek Wind FarmKlickitat County46°43′36″N 120°50′02″W2052007[15][16]
Big Horn Wind FarmKlickitat County45°45′22″N 120°48′31″W2002006[15][16]
Big Horn 2Klickitat County45°45′22″N 120°48′31″W502011[15][16]
Palouse Wind FarmWhitman County47°09′21″N 117°21′52″W1052012[15][16]
Stateline Wind Farm
(Vansycle Wind)		Walla Walla County46°02′14″N 118°48′24″W1772001[15]
Hopkins Ridge Wind FarmColumbia County46°24′07″N 117°48′44″W1572005/2008[15][16]
Harvest Wind FarmKlickitat County45°48′51″N 120°20′50″W992009[15][16]
Nine Canyon Wind FarmBenton County46°06′14″N 119°08′54″W992002[15][16]
Goodnoe Hills Wind FarmKlickitat County45°46′46″N 120°31′25″W942008[15][16]
Coastal EnergyGrays Harbor County46°47′38″N 124°04′01″W62010[15][16]
Lower Snake River Wind ProjectGarfield County46°28′46″N 117°37′50″W342.72012[17]
Juniper CanyonKlickitat County45°54′08″N 120°12′26″W151.22011[18][16]
Kittitas Valley Wind Farm
(Sagebrush Wind)		Kittitas County47°9′14″N 120°40′43″W100.82010[15][16]
Vantage Wind Power ProjectKittitas County46°57′15″N 120°11′09″W902010[19][16]
Linden RanchKlickitat County45°44′34″N 120°46′56″W502010[15][16]
Windy FlatsKlickitat County45°44′31″N 120°43′32″W262.42009[16]
Windy Point
(Tuolumne Wind)		Klickitat County45°45′57″N 120°39′07″W137.62009[16]
Tucannon River Wind FarmColumbia County46°28′26″N 117°35′48″W2672014[20][16]
Swauk Valley Ranch WindKittitas County47°8′30″N 120°45′15″W4.32012[21][16]
Skookumchuck Wind FarmLewis and Thurston Counties46°44′23″N 122°38′14″W1362020[22]

Solar
See also: Solar power in Washington

Only utility scale projects larger than 1 MW are listed.

Name Location Coordinates Capacity
(MWAC)		 Year
opened		 Ref
Adams Nielson Solar Farm Adams County 46°57′19″N 118°37′16″W 28 2018 [23][24][4]
Camas Solar Project Kittitas County 6.7 2022 [25]
Horn Rapids Solar Benton County 4 2020 [25]
Lund Hill Solar Project Klickitat County 45°53′46″N 120°16′23″W 194 2022 [26]
Penstemon Solar Project Kittitas County 6.7 2022 [27]
Urtica Solar Project Kittitas County 6.7 2022 [25]

Municipal Solid Waste (MSW) Combustion
NameLocationCoordinatesCapacity
(MW)		Year
opened		Ref
Spokane Waste to Energy (WTE) FacilitySpokane County47°37′35″N 117°30′17″W221991[28]

Former facilities
Station Location Type Capacity
(MW)		 Status Year opened Year closed
Elwha Dam Clallam County, Washington Hydroelectric 14.8 Demolished 1913 2012
Glines Canyon Dam Clallam County, Washington Hydroelectric 13.3 Demolished 1927 2014
Satsop Nuclear Power Plant Grays Harbor County, Washington Nuclear 2480 Canceled N/A 1977
Condit Hydroelectric Project Klickitat County, Washington Hydroelectric 14.7 Demolished 1913 2011

See also

References
  1. "Electricity Data Browser, Net generation for all sectors, Washington, Fuel Type-Check all, Annual, 2001–21". www.eia.gov. Retrieved 2022-07-18.
  2. "Washington Electricity Profile". U.S. Energy Information Administration. Retrieved 2022-07-18.
  3. "Washington Electricity Profile Analysis". U.S. EIA. Retrieved 2021-01-15.
  4. Energy Information Administration (15 September 2020). "Form EIA-860 detailed data with previous form data (EIA-860A/860B)". eia.gov. Archived from the original on 18 September 2020.
  5. Originally referred to as the Satsop Combustion Turbine as noted in Grays Harbor Energy Center.
  6. "Alder Dam". Tacoma Public Utilities. Retrieved 2021-01-22.
  7. "Cowlitz Falls Project". Lewis County Public Utilities District. 7 February 2017. Retrieved 2021-01-22.
  8. "Cushman Hydro Project". Tacoma Public Utilities. Retrieved 2021-01-22.
  9. "Jackson Hydro Project". Snohomish County Public Utilities District. Retrieved 2021-01-22.
  10. "Lake Chelan Dam". Chelan County Public Utility District. Retrieved 2021-01-22.
  11. "LaGrande Dam". Tacoma Public Utilities. Retrieved 2021-01-22.
  12. "Our Energy Mix - Spokane River Project - Long Lake Hydroelectric". Avista Corp. Retrieved 2021-01-22.
  13. "Mayfield Dam". Tacoma Public Utilities. Retrieved 2021-01-22.
  14. "Mossyrock Dam". Tacoma Public Utilities. Retrieved 2021-01-22.
  15. Staff (July 2010). "U.S. Wind Energy Projects - Washington". American Wind Energy Association. Archived from the original on 2008-12-31. Retrieved 2010-07-28.
  16. Staff. "The Wind Power - Wind Farms". Retrieved 2016-12-15.
  17. Puget Sound Energy. "Lower Snake River Wind Facility Fact Sheet" (PDF). Archived from the original (PDF) on 7 March 2012. Retrieved 16 January 2013.
  18. "Juniper Canyon - Phase 1 | Renewable Northwest". www.rnp.org. Archived from the original on 2015-11-17.
  19. Vantage Wind Energy Project
  20. Tucannon River Wind Farm
  21. Renewable Project Northwest
  22. "Skookumchuck Wind Facility in Washington is Operational". www.southerncompany.com. Retrieved 2020-12-01.
  23. Adams Nielson Solar Farm
  24. Kramer, Becky (9 November 2018). "'Harvesting the sun':Washington state's largest solar farm nears production". The Seattle Times. Archived from the original on 21 November 2018.
  25. "Form EIA-860 detailed data with previous form data (EIA-860A/860B)". EIA.
  26. Lund Hill Solar Project
  27. "Washington Solar | SEIA". www.seia.org. Retrieved 2023-08-19.
  28. Spokane's Waste to Energy (WTE) Facility
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