Nameplate capacity
83 MW
Rank in Idaho
#22
of 155 plants
In service since
1952
March 1952
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Idaho Power Co
- County
- Owyhee County
- Generating units
- 3
- Share of state capacity
- 1.26%
- Rank among hydro plants in Idaho
- #7 of 76
- EIA plant code
- 812
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 28 MW | 32 MW | 1952 | Operating |
| 2 | Conventional Hydroelectric | 28 MW | 31 MW | 1952 | Operating |
| 3 | Conventional Hydroelectric | 28 MW | 32 MW | 1952 | 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 Idaho
| Franklin Solar Hybrid | Solar | 100 MW |
| American Falls | Hydro | 92 MW |
| Happy Valley Battery Storage | Battery storage | 82 MW |
| Grand View Solar Two | Solar | 80 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 83 MW solar plant and a 83 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 Idaho power plants · What Idaho actually generates