JASPER
OperatingNatural Gas power plant
- Capacity
- 1,002 MW
- Primary fuel
- Natural Gas
- County
- Jasper County
- Operator
- SOUTH CAROLINA ELECTRIC&GAS CO
- Status
- Operating
- Commissioned
- 2004
- EIA plant ID
- 55927
- Generators
- 4
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 4,614 GWh
- Capacity factor (2024, EIA nameplate)
- 49%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 32.3595, -81.1239
JASPER, a 1,002 MW Natural Gas power plant in Jasper County, South Carolina. Operated by SOUTH CAROLINA ELECTRIC&GAS CO, commissioned 2004.
How JASPER compares
With 1,002 MW of capacity, JASPER ranks 8th among the 83 operating power plants Bywatts maps in South Carolina and 2nd of the 12 operating Natural Gas plants in the state. It accounts for about 17% of South Carolina's operating Natural Gas capacity and 4.3% of all operating capacity in the state. Nationally it is the 88th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2004, it is newer than 81% of the 82 operating South Carolina plants with a recorded commissioning year. Its operator, SOUTH CAROLINA ELECTRIC&GAS CO, runs 12 operating plants in South Carolina totaling 5,236 MW.
EIA-860 lists 4 generators at the site with 1,068 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 4,614 GWh in 2024 (a 49% capacity factor), down 9% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 230 kV line owned by SOUTH CAROLINA ELECTRIC&GAS CO, under 0.1 miles away. Another 9 operating power plants totaling 2,959 MW sit within 25 miles; the largest is MCINTOSH (988 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
JASPER is a 1,002 MW natural gas power plant in Jasper County, SC, operated by SOUTH CAROLINA ELECTRIC&GAS CO, commissioned in 2004. Jasper County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.8 of 5 at the 94th national percentile. Hurricane is the leading peril, rated Relatively High by FEMA at the 100th 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.
Jasper County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively High | 100th | 5.0 of 5 | 0.33 |
| Earthquake | Relatively Low | 88th | 4.5 of 5 | <0.01 |
| Lightning | Relatively Low | 78th | 4.1 of 5 | 66.2 |
| Coastal flooding | Relatively Low | 67th | 3.7 of 5 | 3.6 |
| Wildfire | Relatively Low | 63rd | 3.5 of 5 | <0.01 |
| Heat wave | Relatively Low | 44th | 2.8 of 5 | 9.6 |
| Winter weather | Very Low | 42nd | 2.7 of 5 | 0.83 |
| Ice storm | Relatively Low | 41st | 2.6 of 5 | 0.62 |
| Hail | Very Low | 32nd | 2.3 of 5 | 2.4 |
| Tornado | Relatively Low | 30th | 2.2 of 5 | 0.29 |
| Riverine flooding | Very Low | 19th | 1.8 of 5 | 0.36 |
| Strong wind | Relatively Low | 11th | 1.4 of 5 | 1.8 |
Model hail, wind and flood exposure for Jasper 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.