Nameplate capacity
240 MW
Rank in Washington
#29
of 139 plants
In service since
1958
December 1958
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- PacifiCorp
- County
- Skamania County
- Generating units
- 3
- Share of state capacity
- 0.76%
- Rank among hydro plants in Washington
- #15 of 73
- EIA plant code
- 3850
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| HY11 | Conventional Hydroelectric | 80 MW | 88 MW | 1958 | Operating |
| HY12 | Conventional Hydroelectric | 80 MW | 88 MW | 1958 | Operating |
| HY13 | Conventional Hydroelectric | 80 MW | 88 MW | 1958 | 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
| Windy Flats Wind Project | Wind | 262 MW |
| River Road Gen Plant | Natural gas | 248 MW |
| Marengo Wind Plant | Wind | 234 MW |
| Gorge | Hydro | 207 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 240 MW solar plant and a 240 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