Nameplate capacity
3.9 MW
Rank in Idaho
#115
of 155 plants
In service since
1941
December 1941
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- City of Bonners Ferry
- County
- Boundary County
- Generating units
- 4
- Share of state capacity
- 0.06%
- Rank among hydro plants in Idaho
- #47 of 76
- EIA plant code
- 6506
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Conventional Hydroelectric | 1.5 MW | 1.7 MW | 1982 | Operating |
| 1 | Conventional Hydroelectric | 1.0 MW | 1.1 MW | 1941 | Operating |
| 3 | Conventional Hydroelectric | 1.0 MW | 1.1 MW | 1950 | Operating |
| 2 | Conventional Hydroelectric | 0.4 MW | 0.4 MW | 2021 | 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
| Elmore BESS | Battery storage | 4.0 MW |
| Milner Butte LFGE | Other | 3.9 MW |
| Chester Diversion Hydroelectric Project | Hydro | 3.6 MW |
| Dry Creek Project | Hydro | 3.6 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 3.9 MW solar plant and a 3.9 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