United States › Power plants › Hydroelectric plants › Montana
HYDROELECTRIC PLANTSRainbow (MT)
Rainbow (MT) is a 59.0 MW operating hydroelectric plant in Cascade County, Montana, operated by NorthWestern Energy (MT Hydro).
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| RAI9 | Conventional Hydroelectric | 59 MW | |
| RAI7 | Conventional Hydroelectric | 5.8 MW | Retired |
| RAI8 | Conventional Hydroelectric | 5.8 MW | Retired |
| RAI1 | Conventional Hydroelectric | 4.5 MW | Retired |
| RAI2 | Conventional Hydroelectric | 4.5 MW | Retired |
| RAI3 | Conventional Hydroelectric | 4.0 MW | Retired |
| RAI4 | Conventional Hydroelectric | 4.0 MW | Retired |
| RAI5 | Conventional Hydroelectric | 4.0 MW | Retired |
| RAI6 | Conventional Hydroelectric | 4.0 MW | Retired |
Plant details
- Operator
- NorthWestern Energy (MT Hydro)
- Location
- Cascade County, Montana
- Balancing authority
- NWMT
- Sector
- Electric Utility
- Capacity
- Operating: 59.0 MW
Retired: 36.6 MW - First unit online
- Jul 1910
- EIA plant ID
- 2193
Location
47.5344, -111.2045
Nearby power plants
- CochraneHydroelectric plants · 59.4 MW · 0.5 mi
- Black Eagle Solar, LLCSolar farms · 3.0 MW · 2.5 mi
- Black EagleHydroelectric plants · 26.7 MW · 2.8 mi
- RyanHydroelectric plants · 55.2 MW · 4.5 mi
- MoronyHydroelectric plants · 63.0 MW · 7.5 mi
- Horseshoe Bend Wind ParkWind farms · 9.7 MW · 11.2 mi
- Spion Kop Wind FarmWind farms · 40.0 MW · 29.9 mi
- South Peak WindWind farms · 80.0 MW · 31.0 mi
- Greenfield Wind - MTWind farms · 25.0 MW · 37.6 mi
- Fairfield WindWind farms · 10.0 MW · 37.8 mi
Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem