Nameplate capacity
59 MW
Rank in Montana
#31
of 73 plants
In service since
2013
March 2013
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- NorthWestern Energy (MT Hydro)
- County
- Cascade County
- Generating units
- 1
- Share of state capacity
- 0.77%
- Rank among hydro plants in Montana
- #10 of 23
- EIA plant code
- 2193
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| RAI9 | Conventional Hydroelectric | 59 MW | 64 MW | 2013 | 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 Montana
| Morony | Hydro | 63 MW |
| Cochrane | Hydro | 59 MW |
| Canyon Ferry | Hydro | 58 MW |
| Ryan | Hydro | 55 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 59 MW solar plant and a 59 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 Montana power plants · What Montana actually generates