Nameplate capacity
1,647 MW
Rank in Montana
#1
of 73 plants
In service since
1984
January 1984
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Talen Montana LLC
- County
- Rosebud County
- Generating units
- 2
- Share of state capacity
- 21.50%
- Rank among coal plants in Montana
- #1 of 4
- EIA plant code
- 6076
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Conventional Steam Coal | 824 MW | 740 MW | 1984 | Operating |
| 4 | Conventional Steam Coal | 824 MW | 740 MW | 1986 | 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
| Libby | Hydro | 525 MW |
| Noxon Rapids | Hydro | 488 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 1,647 MW solar plant and a 1,647 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