H B ROBINSON
OperatingNuclear power plant
- Capacity
- 785 MW
- Primary fuel
- Nuclear
- County
- Darlington County
- Operator
- PROGRESS ENERGY CAROLINAS INC
- Status
- Operating
- Commissioned
- 1971
- EIA plant ID
- 3251
- Generators
- 1
- Technology
- Nuclear
- Net generation (2024)
- 6,185 GWh
- Capacity factor (2024, EIA nameplate)
- 92%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 34.4026, -80.1582
H B ROBINSON, a 785 MW Nuclear power plant in Darlington County, South Carolina. Operated by PROGRESS ENERGY CAROLINAS INC, commissioned 1971.
How H B ROBINSON compares
With 785 MW of capacity, H B ROBINSON ranks 11th among the 83 operating power plants Bywatts maps in South Carolina and is the smallest of the 4 operating Nuclear plants in the state. It accounts for about 11% of South Carolina's operating Nuclear capacity and 3.3% of all operating capacity in the state. Nationally it is the 53rd-largest of the 55 operating Nuclear plants in the database. Commissioned in 1971, it is older than 64% of the 82 operating South Carolina plants with a recorded commissioning year. Its operator, PROGRESS ENERGY CAROLINAS INC, runs 2 operating plants in South Carolina totaling 1,101 MW. It shares Darlington County with 2 other operating plants, DARLINGTON COUNTY and SONOCO PRODUCTS CO.
EIA-860 lists 1 generator at the site with 769 MW of nameplate capacity, all nuclear technology. Net generation was 6,185 GWh in 2024 (a 92% capacity factor), up 9% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 230 kV line owned by PROGRESS ENERGY CAROLINAS INC, under 0.1 miles away. Another 3 operating power plants totaling 368 MW sit within 25 miles; the largest is DARLINGTON COUNTY (316 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
H B ROBINSON is a 785 MW nuclear power plant in Darlington County, SC, operated by PROGRESS ENERGY CAROLINAS INC, commissioned in 1971. Darlington County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 55th national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a nuclear plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Darlington County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 85th | 4.4 of 5 | 0.22 |
| Earthquake | Relatively Low | 84th | 4.3 of 5 | <0.01 |
| Tornado | Relatively Moderate | 69th | 3.8 of 5 | 0.32 |
| Ice storm | Relatively Moderate | 68th | 3.7 of 5 | 0.58 |
| Wildfire | Relatively Low | 62nd | 3.5 of 5 | <0.01 |
| Lightning | Relatively Moderate | 56th | 3.2 of 5 | 57.5 |
| Hail | Relatively Low | 55th | 3.2 of 5 | 3.6 |
| Heat wave | Relatively Moderate | 39th | 2.6 of 5 | 8.1 |
| Strong wind | Relatively Moderate | 37th | 2.5 of 5 | 4.5 |
| Riverine flooding | Relatively Low | 26th | 2.0 of 5 | 0.61 |
| Winter weather | Relatively Moderate | 13th | 1.5 of 5 | 2.2 |
Perils not assessed in Darlington 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 Darlington 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.