Nameplate capacity
28 MW
Rank in Idaho
#42
of 155 plants
In service since
1927
June 1927
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- U S Bureau of Reclamation
- County
- Minidoka County
- Generating units
- 4
- Share of state capacity
- 0.42%
- Rank among hydro plants in Idaho
- #17 of 76
- EIA plant code
- 6398
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 8 | Conventional Hydroelectric | 10 MW | 10 MW | 1997 | Operating |
| 9 | Conventional Hydroelectric | 10 MW | 10 MW | 1997 | Operating |
| 7 | Conventional Hydroelectric | 5.0 MW | 5.0 MW | 1942 | Operating |
| 6 | Conventional Hydroelectric | 2.7 MW | 2.7 MW | 1927 | 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
| Grace | Hydro | 33 MW |
| Oneida | Hydro | 30 MW |
| Swan Falls | Hydro | 27 MW |
| Gem State | Hydro | 23 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 28 MW solar plant and a 28 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