MOSELLE
OperatingNatural Gas power plant
- Capacity
- 511 MW
- Primary fuel
- Natural Gas
- County
- Jones County
- Operator
- SOUTH MISSISSIPPI EL PWR ASSN
- Status
- Operating
- Commissioned
- 1970
- EIA plant ID
- 2070
- Generators
- 7
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 2,009 GWh
- Capacity factor (2024, EIA nameplate)
- 45%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 31.5280, -89.3004
MOSELLE, a 511 MW Natural Gas power plant in Jones County, Mississippi. Operated by SOUTH MISSISSIPPI EL PWR ASSN, commissioned 1970.
How MOSELLE compares
With 511 MW of capacity, MOSELLE ranks 14th among the 37 operating power plants Bywatts maps in Mississippi and 10th of the 21 operating Natural Gas plants in the state. It accounts for about 5.6% of Mississippi's operating Natural Gas capacity and 3.3% of all operating capacity in the state. Nationally it is the 326th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1970, it is older than 77% of the 35 operating Mississippi plants with a recorded commissioning year. Its operator, SOUTH MISSISSIPPI EL PWR ASSN, runs 6 operating plants in Mississippi totaling 2,209 MW.
EIA-860 lists 7 generators at the site with 511 MW of nameplate capacity, mainly natural gas fired combined cycle technology. Net generation was 2,009 GWh in 2024 (a 45% capacity factor), up 64% from 2022. Its generators came online between 1970 and 2012.
Grid neighborhood
The closest transmission line found within 10 miles is a 161 kV line owned by MISSISSIPPI POWER CO, under 0.1 miles away. Another 2 operating power plants totaling 450 MW sit within 25 miles; the largest is R D MORROW (400 MW, Coal).
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
MOSELLE is a 511 MW natural gas power plant in Jones County, MS, operated by SOUTH MISSISSIPPI EL PWR ASSN, commissioned in 1970. Jones County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.6 of 5 at the 64th national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 87th 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.
Jones County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 87th | 4.5 of 5 | 0.16 |
| Tornado | Relatively High | 86th | 4.4 of 5 | 0.86 |
| Lightning | Relatively High | 77th | 4.1 of 5 | 76.7 |
| Wildfire | Relatively Low | 68th | 3.7 of 5 | <0.01 |
| Earthquake | Relatively Low | 62nd | 3.5 of 5 | <0.01 |
| Hail | Relatively Moderate | 61st | 3.4 of 5 | 3.8 |
| Strong wind | Relatively High | 58th | 3.3 of 5 | 3.0 |
| Ice storm | Relatively Moderate | 49th | 3.0 of 5 | 0.70 |
| Heat wave | Relatively Moderate | 48th | 2.9 of 5 | 11.5 |
| Winter weather | Relatively Moderate | 35th | 2.4 of 5 | 1.7 |
| Riverine flooding | Relatively Low | 25th | 2.0 of 5 | 3.1 |
Perils not assessed in Jones County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Jones County 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.