J E CORETTE PLANT
OperatingCoal power plant
- Capacity
- 173 MW
- Primary fuel
- Coal
- County
- Yellowstone County
- Operator
- PPL MONTANA LLC
- Status
- Operating
- EIA plant ID
- 2187
- Coordinates
- 45.7756, -108.4812
J E CORETTE PLANT, a 173 MW Coal power plant in Yellowstone County, Montana. Operated by PPL MONTANA LLC.
Weather peril exposure
J E CORETTE PLANT is a 173 MW coal power plant in Yellowstone County, MT, operated by PPL MONTANA LLC. Yellowstone County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.3 of 5 at the 33rd national percentile. Winter weather is the leading peril, rated Very High by FEMA at the 92nd percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Yellowstone County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Winter weather | Very High | 92nd | 4.7 of 5 | 18.3 |
| Wildfire | Relatively Moderate | 88th | 4.5 of 5 | <0.01 |
| Earthquake | Relatively Low | 50th | 3.0 of 5 | <0.01 |
| Heat wave | Relatively Low | 49th | 3.0 of 5 | 2.2 |
| Hail | Relatively Moderate | 47th | 2.9 of 5 | 2.0 |
| Riverine flooding | Relatively Moderate | 37th | 2.5 of 5 | 1.0 |
| Lightning | Relatively High | 27th | 2.1 of 5 | 32.0 |
| Ice storm | Relatively Low | 17th | 1.7 of 5 | 0.01 |
| Tornado | Relatively Low | 16th | 1.6 of 5 | 0.15 |
| Strong wind | Relatively Moderate | 9th | 1.4 of 5 | 0.85 |
Perils not assessed in Yellowstone 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Yellowstone 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.