Summary of Electricity Activity in King County, WA
Summary of King County, WA Generation
King County, WA is ranked #1,103 out of 2,164 U.S. counties nationwide and #25 out of 31 Washington counties in terms of total annual net electricity generation.
| Annual Generation | 365.2 GWh |
|---|---|
| Annual Consumption | 3.1 M MMBtu |
| Last Update | Sep 2025 |
| Power Plants | 12 |
| Companies on File | 9 |
Map of Top Producing Plants in King County, WA
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Annual Net Generation From hydroelectric power
351.5 GWh
National Rank in Terms of hydroelectric Net Electricity Generation
#127 /547 U.S. Counties
State Rank in Terms of hydroelectric Net Electricity Generation
#15 /26 Washington Counties
Monthly Net Generation for King County, WA
Net Generation by Fuel Source
Net Generation by Fuel Source Breakdown
| State Rank | National Rank | Generation | Fuel Consumption | |
|---|---|---|---|---|
| All | #25 / 31 | #1103 / 2164 | 365.18 GWh | 3.12 M MMBtu |
| Water | #15 / 26 | #127 / 547 | 351.47 GWh | 1.50 M MMBtu |
| Other Biomass Gas | #1 / 1 | #23 / 55 | 9.57 GWh | 111.65 k MMBtu |
| Natural Gas | #11 / 13 | #804 / 929 | 3.95 GWh | 1.50 M MMBtu |
| Distillate Fuel Oil | #5 / 7 | #464 / 737 | 196.74 MWh | 2.58 k MMBtu |
Power Plants in King County, WA
| Plant | Utility Name | Generation | Consumption | Fuel Types |
|---|---|---|---|---|
| Snoqualmie 2 | Puget Sound Energy Inc | 108.9 GWh | 596.0 k MMBtu | Water |
| Snoqualmie | Puget Sound Energy Inc | 65.9 GWh | 249.6 k MMBtu | Water |
| Twin Falls Hydro | Central Rivers Power US, LLC | 62.9 GWh | 240.8 k MMBtu | Water |
| South Fork Tolt | City of Seattle - (WA) | 44.6 GWh | 155.6 k MMBtu | Water |
| Hancock Creek Hydroelectric Project | PUD No 1 of Snohomish County | 23.0 GWh | 86.9 k MMBtu | Water |
| Calligan Creek Hydroelectric Project | PUD No 1 of Snohomish County | 17.2 GWh | 64.8 k MMBtu | Water |
| Weeks Falls | Eagle Creek Renewable Energy, LLC | 13.1 GWh | 49.3 k MMBtu | Water |
| Black Creek | Black Creek Hydro Inc | 9.7 GWh | 36.7 k MMBtu | Water |
| West Point Treatment Plant | King County Dept-Natural Res | 9.6 GWh | 111.6 k MMBtu | Other Biomass Gas |
| Cedar Falls (WA) | City of Seattle - (WA) | 6.2 GWh | 23.2 k MMBtu | Water |
| University of Washington Power Plant | University of Washington | 4.1 GWh | 1.5 M MMBtu | Natural Gas : 97.1% Distillate Fuel Oil : 2.9% |
| Cedar Hills | Bio Energy Washington, LLC | 78.0 MWh | 8.1 k MMBtu | Distillate Fuel Oil |
Electricity Generation for Neighboring Counties
| National Rank | County | Net Generation | # Power Plants |
|---|---|---|---|
| #85 | Chelan County | 11.2 TWh | 6 |
| #2029 | Jefferson County | 3.2 GWh | 3 |
| #672 | Kittitas County | 1.2 TWh | 9 |
| #183 | Lewis County | 7.5 TWh | 8 |
| #1165 | Mason County | 304.6 GWh | 3 |
| #464 | Pierce County | 2.3 TWh | 14 |
| #554 | Skagit County | 1.7 TWh | 4 |
| #1072 | Snohomish County | 401.9 GWh | 9 |
| #1046 | Thurston County | 427.5 GWh | 4 |
| #1252 | Yakima County | 234.0 GWh | 12 |
* Net Generation data is based on the last 12 months since Sep 2025
Electricity Generation for Cities Located in King County, WA
| State Rank | City | Net Generation | # Power Plants |
|---|---|---|---|
| #83 | Maple Valley, WA | 78.0 MWh | 1 |
| #54 | North Bend, WA | 126.9 GWh | 4 |
| #69 | Seattle, WA | 13.6 GWh | 2 |
| #48 | Snoqualmie, WA | 224.6 GWh | 5 |
* Net Generation data is based on the last 12 months since Sep 2025