Geismar Cogen
Natural gas power plant · Ascension County, Louisiana
Nameplate capacity
84 MW
Rank in Louisiana
#51
of 98 plants
In service since
2000
January 2000
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Air Liquide Large Industries U S LP
- County
- Ascension County
- Generating units
- 1
- Share of state capacity
- 0.29%
- Rank among natural gas plants in Louisiana
- #36 of 53
- EIA plant code
- 56787
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GTG | Natural Gas Fired Combustion Turbine | 84 MW | 73 MW | 2000 | 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 Louisiana
| Plant 31 Paper Mill | Natural gas | 84 MW |
| Geismar | Natural gas | 84 MW |
| Shell Chemical | Natural gas | 80 MW |
| Houma | Natural gas | 79 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 84 MW solar plant and a 84 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 Louisiana power plants · What Louisiana actually generates