PLAQUEMINE COGENERATION PLANT
OperatingNatural Gas power plant
- Capacity
- 987 MW
- Primary fuel
- Natural Gas
- County
- Iberville Parish
- Operator
- DOW CHEMICAL CO
- Status
- Operating
- Commissioned
- 2004
- EIA plant ID
- 55419
- Generators
- 7
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 4,832 GWh
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 30.3217, -91.2347
PLAQUEMINE COGENERATION PLANT, a 987 MW Natural Gas power plant in Iberville Parish, Louisiana. Operated by DOW CHEMICAL CO, commissioned 2004.
How PLAQUEMINE COGENERATION PLANT compares
With 987 MW of capacity, PLAQUEMINE COGENERATION PLANT ranks 9th among the 72 operating power plants Bywatts maps in Louisiana and 4th of the 41 operating Natural Gas plants in the state. It accounts for about 6.4% of Louisiana's operating Natural Gas capacity and 4.0% of all operating capacity in the state. Nationally it is the 95th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2004, it is newer than 77% of the 72 operating Louisiana plants with a recorded commissioning year. It shares Iberville Parish with 3 other operating plants, including CARVILLE ENERGY LLC and AXIALL PLAQUEMINE.
EIA-860 lists 7 generators at the site with 1,085 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 4,832 GWh in 2024. Its generators came online between 2004 and 2024.
Grid neighborhood
The closest transmission line found within 10 miles is a 230 kV line owned by ENTERGY LOUISIANA LLC, under 0.1 miles away. Another 12 operating power plants totaling 1,933 MW sit within 25 miles; the largest is CARVILLE ENERGY LLC (570 MW, Natural Gas).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
PLAQUEMINE COGENERATION PLANT is a 987 MW natural gas power plant in Iberville Parish, LA, operated by DOW CHEMICAL CO, commissioned in 2004. Iberville Parish carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.3 of 5 at the 82nd national percentile. Hurricane is the leading peril, rated Relatively High by FEMA at the 97th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Iberville Parish hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively High | 97th | 4.9 of 5 | 0.20 |
| Lightning | Relatively Moderate | 84th | 4.4 of 5 | 88.4 |
| Heat wave | Relatively Low | 59th | 3.4 of 5 | 14.7 |
| Tornado | Relatively Moderate | 53rd | 3.1 of 5 | 0.52 |
| Coastal flooding | Relatively Moderate | 47th | 2.9 of 5 | 3.8 |
| Ice storm | Relatively Low | 39th | 2.6 of 5 | 0.48 |
| Earthquake | Very Low | 31st | 2.2 of 5 | <0.01 |
| Winter weather | Very Low | 26th | 2.0 of 5 | 1.2 |
| Hail | Very Low | 25th | 2.0 of 5 | 1.3 |
| Strong wind | Relatively Low | 18th | 1.7 of 5 | 0.98 |
| Riverine flooding | Relatively Low | 14th | 1.6 of 5 | 0.46 |
| Wildfire | Very Low | 5th | 1.2 of 5 | <0.01 |
Model hail, wind and flood exposure for Iberville Parish in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.