ARKANSAS NUCLEAR ONE
OperatingNuclear power plant
- Capacity
- 1,845 MW
- Primary fuel
- Nuclear
- County
- Pope County
- Operator
- ENTERGY ARKANSAS INC
- Status
- Operating
- Commissioned
- 1974
- EIA plant ID
- 8055
- Generators
- 2
- Technology
- Nuclear
- Net generation (2024)
- 14,763 GWh
- Capacity factor (2024, EIA nameplate)
- 91%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 35.3106, -93.2310
ARKANSAS NUCLEAR ONE, a 1,845 MW Nuclear power plant in Pope County, Arkansas. Operated by ENTERGY ARKANSAS INC, commissioned 1974.
How ARKANSAS NUCLEAR ONE compares
With 1,845 MW of capacity, ARKANSAS NUCLEAR ONE ranks 2nd among the 48 operating power plants Bywatts maps in Arkansas. It accounts for about 11% of all operating capacity in Arkansas. Nationally it is the 27th-largest of the 55 operating Nuclear plants in the database. Commissioned in 1974, it is older than 62% of the 48 operating Arkansas plants with a recorded commissioning year. Its operator, ENTERGY ARKANSAS INC, runs 7 operating plants in Arkansas totaling 6,977 MW. It shares Pope County with one other operating plant, DARDANELLE.
EIA-860 lists 2 generators at the site with 1,845 MW of nameplate capacity, all nuclear technology. Net generation was 14,763 GWh in 2024 (a 91% capacity factor), up 3% from 2022. Its generators came online between 1974 and 1980.
Grid neighborhood
The closest transmission line found within 10 miles is a 500 kV line owned by ENTERGY ARKANSAS INC, under 0.1 miles away. One other operating power plant sits within 25 miles: DARDANELLE (161 MW, Hydro).
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
ARKANSAS NUCLEAR ONE is a 1,845 MW nuclear power plant in Pope County, AR, operated by ENTERGY ARKANSAS INC, commissioned in 1974. Pope County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.0 of 5 at the 49th national percentile. Ice storm is the leading peril, rated Very High by FEMA at the 96th 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.
Pope County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Very High | 96th | 4.8 of 5 | 1.4 |
| Tornado | Relatively High | 90th | 4.6 of 5 | 0.58 |
| Riverine flooding | Relatively Moderate | 88th | 4.5 of 5 | 1.5 |
| Winter weather | Relatively Moderate | 86th | 4.4 of 5 | 6.8 |
| Earthquake | Relatively Low | 84th | 4.4 of 5 | <0.01 |
| Lightning | Relatively Moderate | 75th | 4.0 of 5 | 60.5 |
| Wildfire | Relatively Low | 70th | 3.8 of 5 | <0.01 |
| Strong wind | Relatively Moderate | 63rd | 3.5 of 5 | 3.5 |
| Heat wave | Relatively Moderate | 60th | 3.4 of 5 | 16.0 |
| Hail | Relatively Low | 48th | 2.9 of 5 | 5.3 |
| Hurricane | Very Low | 32nd | 2.3 of 5 | <0.01 |
Perils not assessed in Pope 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 Pope 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.