DAVIS BESSE
OperatingNuclear power plant
- Capacity
- 925 MW
- Primary fuel
- Nuclear
- County
- Ottawa County
- Operator
- FIRSTENERGY NUCLEAR OPERATING COMPANY
- Status
- Operating
- Commissioned
- 1977
- EIA plant ID
- 6149
- Generators
- 1
- Technology
- Nuclear
- Net generation (2024)
- 7,368 GWh
- Capacity factor (2024, EIA nameplate)
- 91%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 41.5967, -83.0861
DAVIS BESSE, a 925 MW Nuclear power plant in Ottawa County, Ohio. Operated by FIRSTENERGY NUCLEAR OPERATING COMPANY, commissioned 1977.
How DAVIS BESSE compares
With 925 MW of capacity, DAVIS BESSE ranks 8th among the 102 operating power plants Bywatts maps in Ohio and is the smallest of the 2 operating Nuclear plants in the state. It accounts for about 41% of Ohio's operating Nuclear capacity and 4.3% of all operating capacity in the state. Nationally it is the 49th-largest of the 55 operating Nuclear plants in the database. Commissioned in 1977, it is older than 72% of the 99 operating Ohio plants with a recorded commissioning year. Its operator, FIRSTENERGY NUCLEAR OPERATING COMPANY, runs 2 operating plants in Ohio totaling 2,237 MW. It shares Ottawa County with one other operating plant, GENOA DIESEL GENERATING STATION.
EIA-860 lists 1 generator at the site with 925 MW of nameplate capacity, all nuclear technology. Net generation was 7,368 GWh in 2024 (a 91% capacity factor), up 13% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 345 kV line, under 0.1 miles away. Another 8 operating power plants totaling 4,913 MW sit within 25 miles; the largest is MONROE (3,293 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
DAVIS BESSE is a 925 MW nuclear power plant in Ottawa County, OH, operated by FIRSTENERGY NUCLEAR OPERATING COMPANY, commissioned in 1977. Ottawa County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 54th national percentile. Heat wave is the leading peril, rated Very Low by FEMA at the 82nd 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.
Ottawa County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Heat wave | Very Low | 82nd | 4.3 of 5 | 2.9 |
| Winter weather | Relatively Moderate | 79th | 4.2 of 5 | 8.9 |
| Ice storm | Relatively Moderate | 74th | 4.0 of 5 | 1.2 |
| Riverine flooding | Relatively Low | 67th | 3.7 of 5 | 1.1 |
| Strong wind | Relatively Moderate | 64th | 3.6 of 5 | 3.4 |
| Tornado | Relatively Moderate | 64th | 3.6 of 5 | 0.25 |
| Hail | Relatively Low | 62nd | 3.5 of 5 | 3.3 |
| Earthquake | Very Low | 41st | 2.6 of 5 | <0.01 |
| Lightning | Relatively Low | 40th | 2.6 of 5 | 37.3 |
| Hurricane | Very Low | 34th | 2.3 of 5 | 0.02 |
| Coastal flooding | Relatively Low | 25th | 2.0 of 5 | 0.02 |
| Wildfire | Very Low | 3rd | 1.1 of 5 | <0.01 |
Model hail, wind and flood exposure for Ottawa 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.