EXELON MEDWAY LLC
OperatingOil power plant
- Capacity
- 135 MW
- Primary fuel
- Oil
- County
- Norfolk County
- Operator
- EXELON POWER
- Status
- Operating
- Commissioned
- 1970
- EIA plant ID
- 1592
- Coordinates
- 42.1400, -71.4464
EXELON MEDWAY LLC, a 135 MW Oil power plant in Norfolk County, Massachusetts. Operated by EXELON POWER, commissioned 1970.
Weather peril exposure
EXELON MEDWAY LLC is a 135 MW oil power plant in Norfolk County, MA, operated by EXELON POWER, commissioned in 1970. Norfolk County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 10th national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 77th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Norfolk County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 77th | 4.1 of 5 | 0.18 |
| Coastal flooding | Relatively High | 75th | 4.0 of 5 | 7.9 |
| Earthquake | Relatively Moderate | 64th | 3.6 of 5 | <0.01 |
| Ice storm | Relatively High | 50th | 3.0 of 5 | 1.8 |
| Lightning | Relatively High | 33rd | 2.3 of 5 | 21.0 |
| Wildfire | Very Low | 25th | 2.0 of 5 | <0.01 |
| Riverine flooding | Relatively High | 22nd | 1.9 of 5 | 2.9 |
| Tornado | Relatively Moderate | 18th | 1.7 of 5 | 0.08 |
| Winter weather | Relatively Low | 14th | 1.6 of 5 | 13.0 |
| Strong wind | Relatively Moderate | 13th | 1.5 of 5 | 0.92 |
| Heat wave | Relatively Moderate | 7th | 1.3 of 5 | 6.1 |
| Hail | Very Low | 3rd | 1.1 of 5 | 1.8 |
Model hail, wind and flood exposure for Norfolk 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.