Geismar
Natural gas power plant · Ascension County, Louisiana
Nameplate capacity
84 MW
Rank in Louisiana
#50
of 98 plants
In service since
1985
July 1985
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- BASF Corporation
- County
- Ascension County
- Generating units
- 3
- Share of state capacity
- 0.29%
- Rank among natural gas plants in Louisiana
- #35 of 53
- EIA plant code
- 10319
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN2 | Natural Gas Fired Combustion Turbine | 41 MW | 39 MW | 1998 | Operating |
| GEN1 | Natural Gas Fired Combustion Turbine | 36 MW | 34 MW | 1985 | Operating |
| GEN3 | Natural Gas Steam Turbine | 7.2 MW | 7.2 MW | 2005 | 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
| ExxonMobil Baton Rouge Turbine Generator | Natural gas | 85 MW |
| Plant 31 Paper Mill | Natural gas | 84 MW |
| Geismar Cogen | Natural gas | 84 MW |
| Shell Chemical | Natural gas | 80 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