Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Priest Rapids | PUD No 2 of Grant County | Mattawa, WA | Bonneville Power Administration (BPAT) | 3.7 TWh | Sep 1959 | Aug 2024 | Water |
| Upper Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 270.8 GWh | Dec 1958 | Dec 2023 | Water |
| Swift 1 | PacifiCorp | Cougar, WA | PacifiCorp West (PACW) | 567.6 GWh | Nov 1958 | Aug 2024 | Water |
| Roza | U S Bureau of Reclamation | Yakima, WA | Bonneville Power Administration (BPAT) | 54.5 GWh | Jul 1958 | Dec 2023 | Water |
| Snoqualmie 2 | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 104.4 GWh | Dec 1956 | Dec 2023 | Water |
| Cosmo Specialty Fibers Plant | Cosmo Specialty Fibers | Cosmopolis, WA | Bonneville Power Administration (BPAT) | 99.6 GWh | Dec 1956 | Dec 2022 | Wood Waste Liquids, excluding Black Liquor : 71.5% Wood/Wood Waste Solids : 15.8% Residual Fuel Oil : 12.7% |
| Chandler | U S Bureau of Reclamation | Benton City, WA | Bonneville Power Administration (BPAT) | 50.7 GWh | Jan 1956 | Nov 2023 | Water |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 8.9 TWh | Aug 1955 | Aug 2024 | Water |
| Box Canyon | PUD No 1 of Pend Oreille County | Ione, WA | Avista Corporation (AVA) | 383.5 GWh | May 1955 | Dec 2023 | Water |
| Yale | PacifiCorp | Amboy, WA | PacifiCorp West (PACW) | 516.9 GWh | Aug 1953 | Dec 2023 | Water |
| Ross | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 412.6 GWh | Nov 1952 | Aug 2024 | Water |
| Longview Fibre | Longview Fibre Co | Longview, WA | Bonneville Power Administration (BPAT) | 170.9 GWh | Dec 1948 | Dec 2023 | Black Liquor : 58.4% Wood/Wood Waste Solids : 22.0% Natural Gas : 19.6% |
| Nippon Dynawave Packaging Longview WA | Nippon Dynawave Packaging Co. | Longview, WA | Bonneville Power Administration (BPAT) | 291.9 GWh | Dec 1947 | Aug 2024 | Black Liquor : 45.6% Natural Gas : 24.1% Wood/Wood Waste Solids : 18.3% Subbituminous Coal : 8.4% Sludge Waste : 3.1% Residual Fuel Oil : 0.5% |
| Alder | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 169.4 GWh | Nov 1945 | Dec 2023 | Water |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 15.0 TWh | Feb 1941 | Aug 2024 | Water |
| Diablo | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 548.9 GWh | Sep 1936 | Dec 2023 | Water |
| Upriver Dam Hydro Plant | City of Spokane | Spokane, WA | Avista Corporation (AVA) | 36.8 GWh | Dec 1935 | Dec 2023 | Water |
| Rock Island | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 2.0 TWh | Sep 1931 | Aug 2024 | Water |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 471.6 GWh | Jun 1931 | Dec 2023 | Water |
| Yelm | City of Centralia - (WA) | Yelm, WA | Bonneville Power Administration (BPAT) | 26.2 GWh | Nov 1930 | Dec 2023 | Water |
| Cushman 2 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 168.5 GWh | Nov 1930 | Dec 2023 | Water |
| Port Townsend Paper | Port Townsend Paper Co | Port Townsend, WA | Bonneville Power Administration (BPAT) | 35.3 GWh | Dec 1928 | Dec 2023 | Black Liquor : 81.5% Wood/Wood Waste Solids : 13.7% Natural Gas : 3.5% Waste/Other Oil : 1.3% |
| Chelan | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 305.8 GWh | Aug 1927 | Dec 2023 | Water |
| Cushman 1 | City of Tacoma - (WA) | Shelton, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 115.5 GWh | May 1926 | Dec 2023 | Water |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 676.4 GWh | Aug 1924 | Aug 2024 | Water |
| Upper Falls | Avista Corp | Spokane, WA | Avista Corporation (AVA) | 59.9 GWh | Mar 1922 | Dec 2023 | Water |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | Seattle City Light (SCL) | 25.2 GWh | Oct 1921 | Dec 2023 | Water |
| Long Lake | Avista Corp | Ford, WA | Avista Corporation (AVA) | 413.0 GWh | Sep 1915 | Dec 2023 | Water |
| Meyers Falls | Hydro Technology Systems Inc | Kettle Falls, WA | Avista Corporation (AVA) | 9.8 GWh | May 1915 | Dec 2023 | Water |
| LaGrande | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 277.1 GWh | Oct 1912 | Dec 2023 | Water |
| Little Falls (WA) | Avista Corp | Ford, WA | Avista Corporation (AVA) | 175.8 GWh | Jun 1910 | Dec 2023 | Water |
| Nine Mile | Avista Corp | Nine Mile, WA | Avista Corporation (AVA) | 118.3 GWh | Jun 1908 | Dec 2023 | Water |
| Nooksack Hydro | Puget Sound Hydro LLC | Glacier, WA | Puget Sound Energy, Inc. (PSEI) | 15.0 GWh | Oct 1906 | Dec 2023 | Water |
| Snoqualmie | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 61.9 GWh | Dec 1897 | Dec 2023 | Water |
Browse Power Plants By Washington Counties
Figures are based on October 2023 generation numbers.| County | State Rank | Active Plants | Oct 2023 Generation |
|---|---|---|---|
| Franklin County, WA | # 31 | 3 | 17.2 GWh |
| Jefferson County, WA | # 30 | 2 | 35.5 GWh |
| Clallam County, WA | # 29 | 3 | 36.2 GWh |
| Yakima County, WA | # 28 | 12 | 105.4 GWh |
| Mason County, WA | # 27 | 3 | 290.0 GWh |
| King County, WA | # 26 | 12 | 328.7 GWh |
| Snohomish County, WA | # 25 | 9 | 329.5 GWh |
| Stevens County, WA | # 24 | 4 | 350.4 GWh |
| Adams County, WA | # 23 | 4 | 439.6 GWh |
| Thurston County, WA | # 22 | 3 | 449.2 GWh |
| Spokane County, WA | # 21 | 7 | 499.1 GWh |
| Skamania County, WA | # 20 | 1 | 567.6 GWh |
| Lincoln County, WA | # 19 | 2 | 588.8 GWh |
| Garfield County, WA | # 18 | 1 | 780.8 GWh |
| Kittitas County, WA | # 17 | 9 | 1.1 TWh |
| Clark County, WA | # 16 | 2 | 1.6 TWh |
| County | State Rank | Active Plants | Oct 2023 Generation |
|---|---|---|---|
| Whitman County, WA | # 15 | 6 | 1.6 TWh |
| Skagit County, WA | # 14 | 4 | 2.3 TWh |
| Pierce County, WA | # 13 | 13 | 2.7 TWh |
| Walla Walla County, WA | # 12 | 4 | 3.1 TWh |
| Columbia County, WA | # 11 | 4 | 3.1 TWh |
| Cowlitz County, WA | # 10 | 6 | 3.4 TWh |
| Pend Oreille County, WA | # 9 | 3 | 3.5 TWh |
| Grays Harbor County, WA | # 8 | 6 | 3.5 TWh |
| Klickitat County, WA | # 7 | 16 | 5.3 TWh |
| Whatcom County, WA | # 6 | 13 | 5.8 TWh |
| Chelan County, WA | # 5 | 4 | 7.0 TWh |
| Lewis County, WA | # 4 | 8 | 7.0 TWh |
| Benton County, WA | # 3 | 6 | 10.3 TWh |
| Douglas County, WA | # 2 | 2 | 12.3 TWh |
| Grant County, WA | # 1 | 8 | 23.3 TWh |