Spirit Mountain
Hydro power plant · Park County, Wyoming
Nameplate capacity
4.5 MW
Rank in Wyoming
#63
of 71 plants
In service since
1994
October 1994
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- U S Bureau of Reclamation
- County
- Park County
- Generating units
- 1
- Share of state capacity
- 0.04%
- Rank among hydro plants in Wyoming
- #11 of 16
- EIA plant code
- 7541
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 4.5 MW | 4.5 MW | 1994 | 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 Wyoming
| Heart Mountain | Hydro | 5.0 MW |
| Sinclair Oil Refinery | Natural gas | 5.0 MW |
| Shoshone (WY) | Hydro | 3.0 MW |
| Garland Canal Power Plant | Hydro | 2.9 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 4.5 MW solar plant and a 4.5 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 Wyoming power plants · What Wyoming actually generates