Seattle City Light
Balancing Authority Summary Information
Seattle City Light is ranked #50 out of 65 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | Seattle City Light |
|---|---|
| States | Washington |
| Last Update | Apr 2025 |
| Annual Generation | 4.4 TWh |
| Power Plants | 9 |
| Utilities | 3 |
| Ranked #50 out of 65 in terms of net annual generation | |
| Ranked #18 out of 47 in terms of annual generation from water | |
| Power Plant Types | Water | 100% |
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Daily Net Generation for Seattle City Light for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Boundary | City of Seattle - (WA) | Metaline, WA | 3 TWh | Jul 1967 | Jan 2025 | Water |
| Cedar Falls (WA) | City of Seattle - (WA) | North Bend, WA | 25 GWh | Oct 1921 | Dec 2023 | Water |
| Diablo | City of Seattle - (WA) | Rockport, WA | 549 GWh | Sep 1936 | Dec 2023 | Water |
| Gorge | City of Seattle - (WA) | Rockport, WA | 682 GWh | Aug 1924 | Jan 2025 | Water |
| Ross | City of Seattle - (WA) | Rockport, WA | 407 GWh | Nov 1952 | Jan 2025 | Water |
| South Fork Tolt | City of Seattle - (WA) | North Bend, WA | 30 GWh | Oct 1995 | Dec 2023 | Water |
| University of Washington Power Plant | University of Washington | Seattle, WA | 8 GWh | Dec 1968 | Jan 2025 | Natural Gas : 98.3% Distillate Fuel Oil : 1.7% |
| West Point Treatment Plant | King County Dept-Natural Res | Seattle, WA | 7 GWh | May 2012 | Dec 2023 | Other Biomass Gas |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #40 | Avangrid Renewables, LLC | 8.9 TWh | 19 |
| #43 | Avista Corporation | 8.0 TWh | 33 |
| #16 | Bonneville Power Administration | 82.4 TWh | 158 |
| #57 | City of Tacoma, Department of Public Utilities, Light Division | 2.2 TWh | 9 |
| #30 | Gridforce Energy Management, LLC | 19.1 TWh | 1 |
| #44 | Portland General Electric Company | 7.9 TWh | 95 |
| #45 | Public Utility District No. 1 of Chelan County | 7.5 TWh | 3 |
| #42 | Public Utility District No. 2 of Grant County, Washington | 8.2 TWh | 4 |
| #53 | PUD No. 1 of Douglas County | 3.6 TWh | 2 |
| #46 | Puget Sound Energy, Inc. | 6.8 TWh | 36 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #45 | Public Utility District No. 1 of Chelan County | 7.5 TWh | 3 |
| #46 | Puget Sound Energy, Inc. | 6.8 TWh | 36 |
| #47 | El Paso Electric Company | 6.6 TWh | 31 |
| #48 | Imperial Irrigation District | 5.6 TWh | 65 |
| #49 | PacifiCorp West | 5.2 TWh | 128 |
| #50 | Seattle City Light | 4.4 TWh | 9 |
| #51 | Duke Energy Progress West | 4.2 TWh | 10 |
| #52 | Southwestern Power Administration | 3.9 TWh | 31 |
| #53 | PUD No. 1 of Douglas County | 3.6 TWh | 2 |
| #54 | New Harquahala Generating Company, LLC | 3.6 TWh | 1 |