Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Hopkins Ridge Wind | Puget Sound Energy Inc | Dayton, WA | Bonneville Power Administration (BPAT) | 350.2 GWh | Oct 2005 | Mar 2026 | Wind |
| Darrington | Hampton Lumber Mills - Washington Inc | Darrington, WA | Bonneville Power Administration (BPAT) | 17.0 GWh | Jan 2007 | Dec 2024 | Wood/Wood Waste Solids |
| Summer Falls Power Plant | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 398.2 GWh | Dec 1984 | Oct 2024 | Water |
| Main Canal Headworks | Columbia Basin Hydropower | Coulee City, WA | Avista Corporation (AVA) | 103.3 GWh | Dec 1986 | Oct 2024 | Water |
| Swift 1 | PacifiCorp | Cougar, WA | PacifiCorp West (PACW) | 548.4 GWh | Nov 1958 | Mar 2026 | Water |
| Upper Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 317.8 GWh | Dec 1958 | Dec 2024 | Water |
| Koma Kulshan | Eagle Creek Renewable Energy, LLC | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 24.8 GWh | Sep 1990 | Dec 2024 | Water |
| Lower Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 326.7 GWh | Feb 1960 | Dec 2024 | Water |
| Wells | PUD No 1 of Douglas County | Chelan, WA | PUD No. 1 of Douglas County (DOPD) | 4.2 TWh | Aug 1967 | Mar 2026 | Water |
| Chehalis Generating Facility | PacifiCorp | Chehalis, WA | Bonneville Power Administration (BPAT) | 2.3 TWh | Jul 2003 | Mar 2026 | Natural Gas |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.2 TWh | Nov 1972 | Dec 2025 | Subbituminous Coal : 99.7% |
| Windy Flats Wind Project | Windy Flats Partners LLC | Centerville, WA | Bonneville Power Administration (BPAT) | 671.6 GWh | Sep 2009 | Dec 2024 | Wind |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Dec 1961 | Mar 2026 | Water |
| Rocky Brook Hydroelectric | Rocky Brook Electric Inc | Brinnon, WA | Bonneville Power Administration (BPAT) | 540.0 MWh | Nov 1985 | Dec 2024 | Water |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 11.2 TWh | Aug 1955 | Mar 2026 | Water |
| Whitehorn | Puget Sound Energy Inc | Blaine, WA | Puget Sound Energy, Inc. (PSEI) | 230.3 GWh | Sep 1981 | Dec 2024 | Natural Gas : 97.5% Distillate Fuel Oil : 2.5% |
| Juniper Canyon I Wind Project | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 110.0 GWh | Feb 2011 | Mar 2026 | Wind |
| Big Horn Wind II | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 108.3 GWh | Dec 2010 | Mar 2026 | Wind |
| Lund Hill Solar | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 366.2 GWh | Sep 2022 | Mar 2026 | Solar |
| Big Horn Wind Project | Avangrid Power LLC | Bickelton, WA | Avangrid Renewables, LLC (AVRN) | 499.2 GWh | Sep 2006 | Mar 2026 | Wind |
| Wanapum | PUD No 2 of Grant County | Beverly, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 5.1 TWh | May 1963 | Mar 2026 | Water |
| Chandler | U S Bureau of Reclamation | Benton City, WA | Bonneville Power Administration (BPAT) | 31.4 GWh | Jan 1956 | Dec 2024 | Water |
| Encogen | Puget Sound Energy Inc | Bellingham, WA | Puget Sound Energy, Inc. (PSEI) | 284.0 GWh | Feb 1993 | Mar 2026 | Natural Gas |
| Arlington Microgrid | PUD No 1 of Snohomish County | Arlington, WA | Bonneville Power Administration (BPAT) | 532.0 MWh | May 2019 | Dec 2024 | Solar |
| Merwin | PacifiCorp | Ariel, WA | PacifiCorp West (PACW) | 467.3 GWh | Jun 1931 | Dec 2024 | Water |
| HF Sinclair Puget Sound Refining | HF Sinclair Corporation | Anacortes, WA | Puget Sound Energy, Inc. (PSEI) | 895.6 GWh | Aug 1991 | Mar 2026 | Natural Gas : 73.2% Other Gas : 26.8% |
| Yale | PacifiCorp | Amboy, WA | PacifiCorp West (PACW) | 488.4 GWh | Aug 1953 | Dec 2024 | Water |
| Sierra Pacific Aberdeen | Sierra Pacific Industries | Aberdeen, WA | Bonneville Power Administration (BPAT) | 128.4 GWh | Feb 2003 | Dec 2024 | Wood/Wood Waste Solids |
Browse Power Plants By Washington Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Jefferson County, WA | # 30 | 3 | 3.2 GWh |
| Franklin County, WA | # 29 | 3 | 12.8 GWh |
| Yakima County, WA | # 28 | 12 | 228.5 GWh |
| Mason County, WA | # 27 | 3 | 304.6 GWh |
| Stevens County, WA | # 26 | 4 | 346.7 GWh |
| King County, WA | # 25 | 12 | 361.2 GWh |
| Snohomish County, WA | # 24 | 9 | 401.9 GWh |
| Thurston County, WA | # 23 | 4 | 441.5 GWh |
| Adams County, WA | # 22 | 4 | 465.3 GWh |
| Skamania County, WA | # 21 | 1 | 548.4 GWh |
| Spokane County, WA | # 20 | 7 | 556.8 GWh |
| Lincoln County, WA | # 19 | 2 | 641.5 GWh |
| Garfield County, WA | # 18 | 2 | 806.7 GWh |
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Clark County, WA | # 16 | 2 | 1.3 TWh |
| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Skagit County, WA | # 15 | 4 | 1.4 TWh |
| Whitman County, WA | # 14 | 6 | 1.8 TWh |
| Pierce County, WA | # 13 | 14 | 2.3 TWh |
| Walla Walla County, WA | # 12 | 4 | 3.4 TWh |
| Grays Harbor County, WA | # 11 | 6 | 3.4 TWh |
| Columbia County, WA | # 10 | 4 | 3.5 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.8 TWh |
| Pend Oreille County, WA | # 8 | 3 | 4.1 TWh |
| Whatcom County, WA | # 7 | 13 | 4.4 TWh |
| Klickitat County, WA | # 6 | 16 | 5.5 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Benton County, WA | # 4 | 7 | 8.0 TWh |
| Douglas County, WA | # 3 | 1 | 11.2 TWh |
| Chelan County, WA | # 2 | 6 | 13.1 TWh |
| Grant County, WA | # 1 | 9 | 28.9 TWh |