NEPTUNE GAS PROCESSING PLANT
OperatingNatural Gas power plant
- Capacity
- 5 MW
- Primary fuel
- Natural Gas
- County
- St. Mary Parish
- Operator
- ENTERPRISE PRODUCTS OPTG LP
- Status
- Operating
- Commissioned
- 2004
- EIA plant ID
- 56139
- Coordinates
- 29.7340, -91.4447
NEPTUNE GAS PROCESSING PLANT, a 5 MW Natural Gas power plant in St. Mary Parish, Louisiana. Operated by ENTERPRISE PRODUCTS OPTG LP, commissioned 2004.
Weather peril exposure
NEPTUNE GAS PROCESSING PLANT is a 5 MW natural gas power plant in St. Mary Parish, LA, operated by ENTERPRISE PRODUCTS OPTG LP, commissioned in 2004. St. Mary Parish carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.5 of 5 at the 88th national percentile. Hurricane is the leading peril, rated Relatively High by FEMA at the 99th 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.
St. Mary Parish hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively High | 99th | 4.9 of 5 | 0.23 |
| Lightning | Relatively Moderate | 90th | 4.6 of 5 | 88.2 |
| Heat wave | Relatively Low | 75th | 4.0 of 5 | 9.4 |
| Coastal flooding | Relatively High | 72nd | 3.9 of 5 | 3.8 |
| Strong wind | Relatively Low | 49th | 2.9 of 5 | 0.66 |
| Tornado | Relatively Moderate | 44th | 2.8 of 5 | 0.59 |
| Hail | Relatively Low | 36th | 2.4 of 5 | 0.92 |
| Winter weather | Relatively Low | 30th | 2.2 of 5 | 0.69 |
| Earthquake | Very Low | 27th | 2.1 of 5 | <0.01 |
| Ice storm | Relatively Low | 23rd | 1.9 of 5 | 0.12 |
| Wildfire | Very Low | 13th | 1.5 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 4th | 1.2 of 5 | 0.89 |
Model hail, wind and flood exposure for St. Mary 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.