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NorthWestern Energy (MT Hydro)
Electric power plant operator — U.S. Energy Information Administration (Forms EIA-860/860M).
Power plants
10
Total nameplate capacity
444.6 MW
States
1
Generators
34
Capacity by technology
Conventional Hydroelectric · 10 plants444.6 MW
| Plant | State | Technology | Capacity |
|---|---|---|---|
| Thompson Falls | MT | Conventional Hydroelectric | 91.1 MW |
| Morony | MT | Conventional Hydroelectric | 63 MW |
| Cochrane | MT | Conventional Hydroelectric | 59.4 MW |
| Rainbow (MT) | MT | Conventional Hydroelectric | 59 MW |
| Ryan | MT | Conventional Hydroelectric | 55.2 MW |
| Holter | MT | Conventional Hydroelectric | 45 MW |
| Black Eagle | MT | Conventional Hydroelectric | 26.7 MW |
| Hauser | MT | Conventional Hydroelectric | 16.8 MW |
| Madison Dam | MT | Conventional Hydroelectric | 16.4 MW |
| Mystic | MT | Conventional Hydroelectric | 12 MW |
Source: U.S. Energy Information Administration, Forms EIA-860/EIA-860M — currently operating generators, aggregated to plant then to operator.