Gorge
Hydro power plant in Whatcom County, Washington. 207.3 MW of nameplate capacity across 4 generators, operated by City of Seattle - (WA).
Also known as Gorge Powerhouse · EIA plant 6431
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 207.3 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- September 1924First generator online
- Operator
- City of Seattle - (WA)EIA operator ID 16868
- Grid
- SCLBalancing authority SCL
- Price nodes
- None linkedNo verified ISO node
- Location
- Whatcom County, WA48.6981, −121.2086
- EIA plant ID
- 6431EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Gorge produces
Free · EIA-923Net generation, 2025
769 GWh
768,952 MWh, final
Capacity factor, 2025
42.3%
2024: 37.8%
January to July 2026
590 GWh
Provisional
Range, 2015 to 2025
0.7–1.0
TWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 958,121 | Not reported | 12 of 12 |
| 2001 | 586,174 | Not reported | 12 of 12 |
| 2002 | 1,023,642 | Not reported | 12 of 12 |
| 2003 | 929,251 | Not reported | 12 of 12 |
| 2004 | 922,475 | Not reported | 12 of 12 |
| 2005 | 775,710 | Not reported | 12 of 12 |
| 2006 | 870,531 | Not reported | 12 of 12 |
| 2007 | 1,075,082 | Not reported | 12 of 12 |
| 2008 | 915,389 | Not reported | 12 of 12 |
| 2009 | 838,890 | Not reported | 12 of 12 |
| 2010 | 870,367 | 47.9% | 12 of 12 |
| 2011 | 1,093,188 | 60.2% | 12 of 12 |
| 2012 | 1,080,091 | 59.3% | 12 of 12 |
| 2013 | 954,151 | 52.5% | 12 of 12 |
| 2014 | 1,056,733 | 58.2% | 12 of 12 |
| 2015 | 952,561 | 52.5% | 12 of 12 |
| 2016 | 1,035,473 | 56.9% | 12 of 12 |
| 2017 | 997,581 | 54.9% | 12 of 12 |
| 2018 | 946,029 | Not reported | 12 of 12 |
| 2019 | 831,786 | 45.8% | 12 of 12 |
| 2020 | 957,221 | 52.6% | 12 of 12 |
| 2021 | 987,701 | 54.4% | 12 of 12 |
| 2022 | 988,670 | 54.4% | 12 of 12 |
| 2023 | 725,514 | 40.0% | 12 of 12 |
| 2024 | 688,958 | 37.8% | 12 of 12 |
| 2025 | 768,952 | 42.3% | 12 of 12 |
| 2026 (provisional, partial year) | 589,852 | 55.9% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 21 | Conventional Hydroelectric | 36.8 | September 1924 |
| 22 | Conventional Hydroelectric | 36.8 | September 1924 |
| 23 | Conventional Hydroelectric | 36.8 | May 1929 |
| 24 | Conventional Hydroelectric | 96.9 | June 1951 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Seattle - (WA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Gorge
More plants operated by City of Seattle - (WA)
Questions about Gorge
How much power does Gorge produce?
Gorge reported 768,952 MWh (769 GWh) of net generation in 2025, a 42.3% capacity factor on 207.3 MW of nameplate capacity. From January to July 2026 it reported 590 GWh, which is provisional.
Where is Gorge?
Gorge is in Whatcom County, Washington, at 48.6981, −121.2086. It is in the Seattle City Light balancing area (SCL).
Who operates Gorge?
EIA-860M for August 2026 lists City of Seattle - (WA) as the operator (EIA operator ID 16868). The operator is not always the owner.
When did Gorge start operating?
Its first generator began operating in September 1924, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page