Fort St Vrain
Natural gas power plant · Weld County, Colorado
Nameplate capacity
1,149 MW
Rank in Colorado
#3
of 326 plants
In service since
1996
May 1996
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Public Service Co of Colorado
- County
- Weld County
- Generating units
- 6
- Share of state capacity
- 5.01%
- Rank among natural gas plants in Colorado
- #1 of 30
- EIA plant code
- 6112
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combined Cycle | 343 MW | 308 MW | 1998 | Operating |
| 2 | Natural Gas Fired Combined Cycle | 175 MW | 150 MW | 1996 | Operating |
| 3 | Natural Gas Fired Combined Cycle | 175 MW | 142 MW | 1999 | Operating |
| 4 | Natural Gas Fired Combined Cycle | 175 MW | 142 MW | 2001 | Operating |
| 5 | Natural Gas Fired Combustion Turbine | 140 MW | 140 MW | 2009 | Operating |
| 6 | Natural Gas Fired Combustion Turbine | 140 MW | 140 MW | 2009 | 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
| Craig (CO) | Coal | 1,428 MW |
| Comanche (CO) | Coal | 1,253 MW |
| Cherokee | Natural gas | 1,006 MW |
| Rawhide | Coal | 800 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 1,149 MW solar plant and a 1,149 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