Trigen St. Louis
Natural gas power plant · St Louis County, Missouri
Nameplate capacity
34 MW
Rank in Missouri
#70
of 139 plants
In service since
1999
June 1999
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Centerstream STL, LLC
- County
- St Louis County
- Generating units
- 6
- Share of state capacity
- 0.15%
- Rank among natural gas plants in Missouri
- #23 of 35
- EIA plant code
- 56309
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST-3 | Natural Gas Fired Combined Cycle | 18 MW | 18 MW | 2000 | Operating |
| CT-1 | Natural Gas Fired Combined Cycle | 5.9 MW | 5.5 MW | 1999 | Operating |
| CT-2 | Natural Gas Fired Combined Cycle | 5.9 MW | 5.5 MW | 1999 | Operating |
| ST-4 | Natural Gas Steam Turbine | 1.5 MW | 1.5 MW | 1999 | Operating |
| ST-5 | Natural Gas Steam Turbine | 1.5 MW | 1.5 MW | 1999 | Operating |
| IC-1 | Natural Gas Internal Combustion Engine | 1.2 MW | 1.2 MW | 1999 | 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 Missouri
| Station I | Other | 38 MW |
| Jackson Square | Other | 36 MW |
| Poplar Bluff Generating Station | Natural gas | 34 MW |
| Fulton (MO) | Natural gas | 33 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 34 MW solar plant and a 34 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 Missouri power plants · What Missouri actually generates