Nameplate capacity
180 MW
Rank in Montana
#14
of 73 plants
In service since
1943
July 1943
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- USACE-Omaha
- County
- McCone County
- Generating units
- 5
- Share of state capacity
- 2.35%
- Rank among hydro plants in Montana
- #6 of 23
- EIA plant code
- 6623
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 41 MW | 50 MW | 1943 | Operating |
| 3 | Conventional Hydroelectric | 41 MW | 50 MW | 1951 | Operating |
| 4 | Conventional Hydroelectric | 40 MW | 49 MW | 1961 | Operating |
| 5 | Conventional Hydroelectric | 40 MW | 49 MW | 1961 | Operating |
| 2 | Conventional Hydroelectric | 17 MW | 20 MW | 1948 | Out of service and NOT expected to return to service in next calendar year |
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
| Dave Gates Generating Station | Natural gas | 203 MW |
| NaturEner Rim Rock Energy | Wind | 189 MW |
| Judith Gap Wind Energy Center | Wind | 135 MW |
| Hardin Generator Project | Coal | 116 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 180 MW solar plant and a 180 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