PILGRIM NUCLEAR POWER STATION
Retired 2019Nuclear power plant
- Capacity
- 670 MW
- Primary fuel
- Nuclear
- County
- Plymouth County
- Operator
- ENTERGY NUCLEAR GENERATION CO
- EIA plant ID
- 1590
- Coordinates
- 41.9441, -70.5782
PILGRIM NUCLEAR POWER STATION, a retired 670 MW Nuclear power plant in Plymouth County, Massachusetts. It was retired in 2019, according to EIA-860.
How PILGRIM NUCLEAR POWER STATION compares
It was retired in 2019 according to EIA-860, so it is not counted in Massachusetts's operating fleet. It shares Plymouth County with 5 other operating plants, including SEMASS RESOURCE RECOVERY and ACUSHNET AD MAKEPEACE.
Grid neighborhood
The closest transmission line found within 10 miles is a 345 kV line, under 0.1 miles away. Another 5 operating power plants totaling 1,274 MW sit within 25 miles; the largest is CANAL (1,165 MW, Oil). Within 50 miles are 4 mapped data centers; the nearest is Markley Group One Summer Street Boston in Boston, about 37.6 miles away.
Computed by Bywatts from HIFLD power plant and transmission line records, EIA-860 retirement records and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
PILGRIM NUCLEAR POWER STATION is a retired 670 MW nuclear power plant in Plymouth County, MA, formerly operated by ENTERGY NUCLEAR GENERATION CO. Plymouth County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 19th national percentile. Coastal flooding is the leading peril, rated Very High by FEMA at the 91st 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.
Plymouth County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Coastal flooding | Very High | 91st | 4.6 of 5 | 7.1 |
| Hurricane | Relatively Moderate | 77th | 4.1 of 5 | 0.17 |
| Earthquake | Relatively Low | 58th | 3.3 of 5 | <0.01 |
| Ice storm | Relatively High | 44th | 2.8 of 5 | 0.62 |
| Strong wind | Relatively High | 31st | 2.2 of 5 | 0.66 |
| Wildfire | Very Low | 24th | 1.9 of 5 | <0.01 |
| Riverine flooding | Relatively Moderate | 22nd | 1.9 of 5 | 2.3 |
| Tornado | Relatively Low | 16th | 1.6 of 5 | 0.14 |
| Lightning | Relatively High | 15th | 1.6 of 5 | 18.7 |
| Winter weather | Relatively Low | 14th | 1.6 of 5 | 11.1 |
| Heat wave | Relatively Moderate | 7th | 1.3 of 5 | 5.1 |
| Hail | Very Low | 3rd | 1.1 of 5 | 1.3 |
Model hail, wind and flood exposure for Plymouth 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.