Nameplate capacity
7.4 MW
Rank in Idaho
#103
of 155 plants
In service since
1946
September 1946
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Fall River Rural Elec Coop Inc
- County
- Teton County
- Generating units
- 4
- Share of state capacity
- 0.11%
- Rank among hydro plants in Idaho
- #41 of 76
- EIA plant code
- 6359
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 2.7 MW | 2.3 MW | 1986 | Operating |
| 2 | Conventional Hydroelectric | 2.7 MW | 2.3 MW | 1986 | Operating |
| 5 | Conventional Hydroelectric | 1.1 MW | 0.8 MW | 1947 | Operating |
| 4 | Conventional Hydroelectric | 0.9 MW | 0.5 MW | 1946 | 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
| Upper Power Plant | Hydro | 8.0 MW |
| Hazelton B Hydro | Hydro | 7.6 MW |
| Thousand Springs | Hydro | 6.8 MW |
| Ashton | Hydro | 6.7 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 7.4 MW solar plant and a 7.4 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