Cheyenne Prairie Generating Station
Natural gas power plant · Laramie County, Wyoming
Nameplate capacity
140 MW
Rank in Wyoming
#21
of 71 plants
In service since
2014
October 2014
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Black Hills Service Company LLC
- County
- Laramie County
- Generating units
- 4
- Share of state capacity
- 1.10%
- Rank among natural gas plants in Wyoming
- #4 of 12
- EIA plant code
- 57703
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 01A | Natural Gas Fired Combined Cycle | 40 MW | 37 MW | 2014 | Operating |
| 01B | Natural Gas Fired Combined Cycle | 40 MW | 37 MW | 2014 | Operating |
| 02A | Natural Gas Fired Combustion Turbine | 40 MW | 37 MW | 2014 | Operating |
| 01C | Natural Gas Fired Combined Cycle | 20 MW | 20 MW | 2014 | 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
| Shute Creek Facility | Natural gas | 144 MW |
| TransAlta Wyoming Wind | Wind | 144 MW |
| Foote Creek Rim | Wind | 135 MW |
| Cedar Springs III | Wind | 133 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 140 MW solar plant and a 140 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