50th largest plant in Louisiana · 2766th nationally
Geismar Cogen is a natural gas power plant in Louisiana with a nameplate capacity of 83.9 MW. It generates roughly 503.8k MWh per year — enough to power about 47,984 average U.S. homes.
Its capacity factor of 69% puts it in the middle range — running steadily but not full-time. At 616 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
| Plant Name | Geismar Cogen |
|---|---|
| Operator | Air Liquide Large Industries U S Lp |
| City | Geismar |
| County | Ascension County |
| State | Louisiana |
| ZIP | 70734 |
| Coordinates | 30.20900, -90.99210 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GTG | Natural Gas Fired Combustion Turbine | Natural Gas | 83.9 MW | Operating | 2000 |
| CO₂ | 155.2k metric tons |
|---|---|
| SO₂ | 4 metric tons |
| NOₓ | 425 metric tons |
| CO₂ Rate | 616 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | SERC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.