Arapahoe Combustion Turbine Project
Natural gas power plant · Denver County, Colorado
Nameplate capacity
194 MW
Rank in Colorado
#40
of 326 plants
In service since
2000
May 2000
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- SWG Arapahoe, LLC
- County
- Denver County
- Generating units
- 3
- Share of state capacity
- 0.85%
- Rank among natural gas plants in Colorado
- #14 of 30
- EIA plant code
- 55200
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| UN5 | Natural Gas Fired Combined Cycle | 71 MW | 39 MW | 2000 | Operating |
| UN6 | Natural Gas Fired Combined Cycle | 71 MW | 39 MW | 2000 | Operating |
| UN7 | Natural Gas Fired Combined Cycle | 52 MW | 45 MW | 2002 | 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 Colorado
| Sun Mountain Solar 1 | Solar | 200 MW |
| Peetz Table Wind Energy | Wind | 200 MW |
| Pike Solar Hybrid | Solar | 175 MW |
| Northern Colorado Wind LLC | Wind | 174 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 194 MW solar plant and a 194 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 Colorado power plants · What Colorado actually generates