Nameplate capacity
1,220 MW
Rank in Washington
#4
of 139 plants
In service since
2011
April 2011
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- PUD No 2 of Grant County
- County
- Grant County
- Generating units
- 10
- Share of state capacity
- 3.85%
- Rank among hydro plants in Washington
- #4 of 73
- EIA plant code
- 3888
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 10A | Conventional Hydroelectric | 122 MW | 122 MW | 2014 | Operating |
| 1A | Conventional Hydroelectric | 122 MW | 122 MW | 2013 | Operating |
| 2A | Conventional Hydroelectric | 122 MW | 122 MW | 2012 | Operating |
| 3A | Conventional Hydroelectric | 122 MW | 122 MW | 2017 | Operating |
| 4A | Conventional Hydroelectric | 122 MW | 122 MW | 2020 | Operating |
| 5A | Conventional Hydroelectric | 122 MW | 122 MW | 2012 | Operating |
| 6A | Conventional Hydroelectric | 122 MW | 122 MW | 2016 | Operating |
| 7A | Conventional Hydroelectric | 122 MW | 122 MW | 2011 | Operating |
| 8A | Conventional Hydroelectric | 122 MW | 122 MW | 2018 | Operating |
| 9A | Conventional Hydroelectric | 122 MW | 122 MW | 2015 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Washington
| Chief Joseph | Hydro | 2,456 MW |
| Rocky Reach | Hydro | 1,349 MW |
| Columbia Generating Station | Nuclear | 1,200 MW |
| Boundary | Hydro | 1,160 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1,220 MW solar plant and a 1,220 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Washington power plants · What Washington actually generates