List of power stations in Washington

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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 electrical energy generation mix in 2022 was 67.6% hydroelectric, 12.5% natural gas, 8.4% nuclear, 6.9% wind, 3.1% coal, and 1.1% biomass which includes most refuse-derived fuel. Other gases and utility-scale solar facilities generated most of the remaining 0.4%. Small-scale photovoltaic installations generated an additional net 393 GWh to the state's electrical grid; an amount over four times larger than Washington's utility-scale photovoltaic plants.[1]

Sources of Washington utility-scale electricity generation, full-year 2022:[1]
  1. Hydroelectric (67.6%)
  2. Natural gas (12.5%)
  3. Nuclear (8.4%)
  4. Wind (6.9%)
  5. Coal (3.1%)
  6. Biomass (1.1%)
  7. Solar (0.1%)
  8. 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]

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Washington electricity production by type

Fossil-fuel power stations

Summarize
Perspective

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

Coal

More information Name, Location ...
Name Location Coordinates Capacity
(MW)
Operator Year opened Scheduled
retirement
Refs
Centralia Power Plant Centralia 46°45′21″N 122°51′35″W 670 TransAlta Corporation 1972 2025 [4]
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Natural gas

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

More information Name, Location ...
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
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Renewable power stations

Summarize
Perspective

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

Hydroelectric

More information Name, Location ...
Name Location Coordinates River Capacity
(MW)
Operator Year opened Ref
Alder Dam Pierce County 46°48′06″N 122°18′37″W Nisqually River 50 Tacoma Power 1945 [5]
Bonneville Dam Skamania County
Multnomah County, Oregon[b]
45°38′39″N 121°56′28″W Columbia River 1,093 United States Army Corps of Engineers 1938, 1981 [4]
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
Okanogan County
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 46°27′58″N 122°06′35″W Cowlitz River 70 Lewis County Public Utilities District 1994 [6]
Cushman Dam No. 1 Mason County 47°25′05″N 123°13′31″W Skokomish River 43 Tacoma Power 1926 [7]
Cushman Dam No. 2 Mason County 47°22′11″N 123°09′37″W Skokomish River 81 Tacoma Power 1930–1931,
1952, 2013
[7]
Diablo Dam Whatcom County 48°42′50″N 121°07′54″W Skagit River 159 Seattle City Light 1936–1937 [4]
Electron Hydroelectric Project Pierce County 46°59′28″N 122°10′30″W Puyallup River 26 Electron Hydro, LLC. 1904, 1929 [4]
Gorge Dam Whatcom County 48°41′53″N 121°12′31″W Skagit River 199 Seattle City Light 1924, 1929,
1951
[4]
Grand Coulee Dam Grant County
Okanogan County
47°57′27″N 118°58′38″W Columbia River 6,809[c] United States Bureau of Reclamation 1941, 1975 [4]
Henry M. Jackson Dam Snohomish County 47°54′30″N 121°48′52″W Sultan River 112 Snohomish County Public Utility District 1984 [9]
Ice Harbor Dam Franklin County
Walla Walla County
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 46°49′58″N 122°19′11″W Nisqually River 64 Tacoma Power 1912, 1945 [11]
Little Goose Dam Columbia County
Whitman County
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 47°50′04″N 117°50′10″W Spokane River 71 Avista Utilities 1915, 1919,
1924
[12]
Lower Baker Dam Skagit County 48°32′52″N 121°44′27″W Baker River (Washington) 79 Puget Sound Energy 1960, 2013 [4]
Lower Granite Dam Garfield County
Whitman County
46°39′34″N 117°25′46″W Snake River 932 United States Army Corps of Engineers 1975, 1978 [4]
Lower Monumental Dam Franklin County
Walla Walla County
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 46°30′13″N 122°35′19″W Cowlitz River 162 Tacoma Power 1963, 1983 [13]
Merwin Dam Clark County
Cowlitz County
45°57′24″N 122°33′16″W Lewis River (Washington) 136 PacifiCorp 1931–1932,
1949, 1958
[4]
Mossyrock Dam Lewis County 46°32′05″N 122°25′29″W Cowlitz River 300 Tacoma Power 1968 [14]
Priest Rapids Dam Grant County
Yakima County
46°38′42″N 119°54′29″W Columbia River 955 Grant County Public Utility District 1959–1961 [4]
Rock Island Dam Chelan County
Douglas County
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 County
Douglas County
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 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 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 48°38′56″N 121°41′27″W Baker River (Washington) 91 Puget Sound Energy 1959 [4]
Wanapum Dam Grant County
Kittitas County
46°52′23″N 119°58′13″W Columbia River 1,038 Grant County Public Utility District 2011–2018 [4]
Wells Dam Chelan County
Douglas County
47°56′49″N 119°51′55″W Columbia River 851 Douglas County Public Utility District 1967–1969 [4]
Wynoochee Dam Grays Harbor County 47°23′06″N 123°36′19″W Wynoochee River 12.8 Tacoma Power 1994 [4]
Yale Dam Clark County
Cowlitz County
45°57′46″N 122°20′08″W Lewis River (Washington) 134 PacifiCorp 1953 [4]
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Wind

More information Name, Location ...
NameLocationCoordinatesCapacity
(MW)
Year openedRef
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 FarmDayton, Washington46°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 County
Thurston County
46°44′23″N 122°38′14″W1362020[22]
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Solar

Only utility scale projects larger than 1 MW are listed.

More information Name, Location ...
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 [4]
Horn Rapids Solar Benton County 4 2020 [4]
Lund Hill Solar Project Klickitat County 45°53′46″N 120°16′23″W 194 2022 [25]
Penstemon Solar Project Kittitas County 6.7 2022 [26]
Urtica Solar Project Kittitas County 6.7 2022 [4]
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Municipal solid waste (MSW) combustion

More information Name, Location ...
NameLocationCoordinatesCapacity
(MW)
Year openedRef
Spokane Waste to Energy (WTE) FacilitySpokane County47°37′35″N 117°30′17″W221991[27]
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Former facilities

More information Station, Location ...
Station Location Type Capacity
(MW)
Status Year opened Year closed Ref
Satsop Nuclear Power Plant Grays Harbor County Nuclear 2480 Canceled N/A 1977
Condit 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
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See also

Notes

  1. Originally referred to as the Satsop Combustion Turbine as noted in Grays Harbor Energy Center.
  2. Electricity generated in Oregon.
  3. Includes 314 MW pumped-storage.[8]

References

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