LIMERICK
OperatingNuclear power plant
- Capacity
- 2,277 MW
- Primary fuel
- Nuclear
- County
- Montgomery County
- Operator
- EXELON NUCLEAR
- Status
- Operating
- Commissioned
- 1986
- EIA plant ID
- 6105
- Coordinates
- 40.2243, -75.5874
LIMERICK, a 2,277 MW Nuclear power plant in Montgomery County, Pennsylvania. Operated by EXELON NUCLEAR, commissioned 1986.
Weather peril exposure
LIMERICK is a 2,277 MW nuclear power plant in Montgomery County, PA, operated by EXELON NUCLEAR, commissioned in 1986. Montgomery County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 3rd national percentile. Earthquake is the leading peril, rated Relatively Moderate by FEMA at the 67th 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.
Montgomery County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Moderate | 67th | 3.7 of 5 | <0.01 |
| Hurricane | Relatively Moderate | 65th | 3.6 of 5 | 0.08 |
| Winter weather | Very High | 61st | 3.4 of 5 | 12.4 |
| Riverine flooding | Relatively High | 37th | 2.5 of 5 | 5.7 |
| Heat wave | Relatively High | 35th | 2.4 of 5 | 9.6 |
| Tornado | Relatively High | 30th | 2.2 of 5 | 0.25 |
| Strong wind | Very High | 24th | 2.0 of 5 | 7.0 |
| Lightning | Relatively Moderate | 20th | 1.8 of 5 | 34.6 |
| Wildfire | Very Low | 14th | 1.6 of 5 | <0.01 |
| Ice storm | Relatively Moderate | 9th | 1.4 of 5 | 1.4 |
| Hail | Relatively Low | 9th | 1.4 of 5 | 2.6 |
Perils not assessed in Montgomery 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 "No Rating" for this county |
Model hail, wind and flood exposure for Montgomery 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.