Yellowstone Energy LP
Other power plant · Yellowstone County, Montana
Nameplate capacity
68 MW
Rank in Montana
#28
of 73 plants
In service since
1995
June 1995
Details
- Primary fuel
- Other
- Technology
- Petroleum Coke
- Operator
- Yellowstone Energy LP
- County
- Yellowstone County
- Generating units
- 1
- Share of state capacity
- 0.89%
- Rank among other plants in Montana
- #1 of 5
- EIA plant code
- 50931
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Petroleum Coke | 68 MW | 52 MW | 1995 | 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
| South Peak Wind | Wind | 80 MW |
| Stillwater Wind, LLC | Wind | 80 MW |
| Morony | Hydro | 63 MW |
| Cochrane | Hydro | 59 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 68 MW solar plant and a 68 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