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 2023, Washington had a total summer capacity of 30,884 MW through all of its power plants, and a net generation of 102,960 GWh.^[2] The electrical energy generation mix in 2024 was 59.6% hydroelectric, 17.7% natural gas, 9.8% nuclear, 8.3% wind, 2.8% coal, 1.1% biomass which includes most refuse-derived fuel. Utility-scale solar and other gases generated most of the remaining 0.7%. Small-scale photovoltaic installations generated an additional net 643 GWh to the state's electrical grid; an amount nearly 50 percent larger than Washington's utility-scale photovoltaic plants.^[1]

Sources of Washington utility-scale electricity generation in gigawatt-hours, full-year 2024:^[1]

1. Hydroelectric: 60,458 (59.6%)
2. Natural gas: 17,959 (17.7%)
3. Nuclear: 9,967 (9.82%)
4. Wind: 8,421 (8.30%)
5. Coal: 2,847 (2.80%)
6. Biomass: 1,121 (1.10%)
7. Solar: 436 (0.43%)
8. Other gases: 223 (0.22%)
9. Other: 75 (0.07%)

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]

Washington electricity production by type

Washington power grid

Fossil-fuel power stations

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

Coal

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]

Natural gas

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]

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

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	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	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	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	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	240	PacifiCorp	1958–1959	[4]
Upper Baker Dam	Whatcom County	48°38′56″N 121°41′27″W	Baker River	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	134	PacifiCorp	1953	[4]

Wind

See also: Wind power in Washington (state)

Name	Location	Coordinates	Capacity (MW)	Year opened	Ref
Wild Horse Wind Farm	Kittitas County	47°01′07″N 120°12′58″W	273	2006, 2009	[15]
Marengo Wind Farm	Columbia County	46°22′27″N 117°46′36″W	211	2007, 2008	[15][16]
White Creek Wind Farm	Klickitat County	46°43′36″N 120°50′02″W	205	2007	[15][16]
Big Horn Wind Farm	Klickitat County	45°45′22″N 120°48′31″W	200	2006	[15][16]
Big Horn 2	Klickitat County	45°45′22″N 120°48′31″W	50	2011	[15][16]
Palouse Wind Farm	Whitman County	47°09′21″N 117°21′52″W	105	2012	[15][16]
Stateline Wind Farm (Vansycle Wind)	Walla Walla County	46°02′14″N 118°48′24″W	177	2001	[15]
Hopkins Ridge Wind Farm	Columbia County	46°24′07″N 117°48′44″W	157	2005, 2008	[15][16]
Harvest Wind Farm	Klickitat County	45°48′51″N 120°20′50″W	99	2009	[15][16]
Nine Canyon Wind Farm	Benton County	46°06′14″N 119°08′54″W	99	2002	[15][16]
Goodnoe Hills Wind Farm	Klickitat County	45°46′46″N 120°31′25″W	94	2008	[15][16]
Coastal Energy	Grays Harbor County	46°47′38″N 124°04′01″W	6	2010	[15][16]
Lower Snake River Wind Project	Garfield County	46°28′46″N 117°37′50″W	342.7	2012	[17]
Juniper Canyon	Klickitat County	45°54′08″N 120°12′26″W	151.2	2011	[18][16]
Kittitas Valley Wind Farm (Sagebrush Wind)	Kittitas County	47°9′14″N 120°40′43″W	100.8	2010	[15][16]
Vantage Wind Power Project	Kittitas County	46°57′15″N 120°11′09″W	90	2010	[19][16]
Linden Ranch	Klickitat County	45°44′34″N 120°46′56″W	50	2010	[15][16]
Windy Flats	Klickitat County	45°44′31″N 120°43′32″W	262.4	2009	[16]
Windy Point (Tuolumne Wind)	Klickitat County	45°45′57″N 120°39′07″W	137.6	2009	[16]
Tucannon River Wind Farm	Dayton, Washington	46°28′26″N 117°35′48″W	267	2014	[20][16]
Swauk Valley Ranch Wind	Kittitas County	47°8′30″N 120°45′15″W	4.3	2012	[21][16]
Skookumchuck Wind Farm	Lewis County Thurston County	46°44′23″N 122°38′14″W	136	2020	[22]

Solar

See also: Solar power in Washington (state)

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	[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]

Municipal solid waste (MSW) combustion

Name	Location	Coordinates	Capacity (MW)	Year opened	Ref
Spokane Waste to Energy (WTE) Facility	Spokane County	47°37′35″N 117°30′17″W	22	1991	[27]

Former facilities

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

See also

• Energy portal
• United States portal
• Washington (state) portal

• List of power stations in the United States

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]