EXXONMOBIL GRAND ISLE GAS
OperatingPower plant
- County
- Jefferson Parish
- Operator
- EXXON MOBIL PRODUCTION CO
- Status
- Operating
- Commissioned
- 1965
- EIA plant ID
- 54927
- Coordinates
- 29.2533, -89.9672
EXXONMOBIL GRAND ISLE GAS, a power plant in Jefferson Parish, Louisiana. Operated by EXXON MOBIL PRODUCTION CO, commissioned 1965.
Weather peril exposure
EXXONMOBIL GRAND ISLE GAS is a power plant in Jefferson Parish, LA, operated by EXXON MOBIL PRODUCTION CO, commissioned in 1965. Jefferson Parish carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.7 of 5 at the 93rd national percentile. Hurricane is the leading peril, rated Very High by FEMA at the 99th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Jefferson Parish hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Very High | 99th | 5.0 of 5 | 0.28 |
| Heat wave | Relatively High | 74th | 4.0 of 5 | 12.4 |
| Riverine flooding | Relatively High | 68th | 3.7 of 5 | 2.0 |
| Lightning | Very High | 66th | 3.7 of 5 | 87.9 |
| Hail | Relatively High | 63rd | 3.5 of 5 | 0.87 |
| Ice storm | Relatively High | 58th | 3.3 of 5 | 0.04 |
| Coastal flooding | Very High | 51st | 3.0 of 5 | 2.8 |
| Wildfire | Very Low | 33rd | 2.3 of 5 | <0.01 |
| Earthquake | Relatively Low | 31st | 2.2 of 5 | <0.01 |
| Winter weather | Relatively High | 31st | 2.2 of 5 | 0.58 |
| Tornado | Relatively Moderate | 15th | 1.6 of 5 | 0.36 |
| Strong wind | Relatively Moderate | 7th | 1.3 of 5 | 0.94 |
Model hail, wind and flood exposure for Jefferson 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.