FIRSTENERGY ARMSTRONG POWER STATION
OperatingCoal power plant
- Primary fuel
- Coal
- County
- Armstrong County
- Operator
- ALLEGHENY ENERGY SUPPLY CO LLC
- Status
- Operating
- EIA plant ID
- 3178
- Coordinates
- 40.9291, -79.4661
FIRSTENERGY ARMSTRONG POWER STATION, a Coal power plant in Armstrong County, Pennsylvania. Operated by ALLEGHENY ENERGY SUPPLY CO LLC.
Weather peril exposure
FIRSTENERGY ARMSTRONG POWER STATION is a coal power plant in Armstrong County, PA, operated by ALLEGHENY ENERGY SUPPLY CO LLC. Armstrong County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 20th national percentile. Riverine flooding is the leading peril, rated Relatively Moderate by FEMA at the 95th 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.
Armstrong County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Moderate | 95th | 4.8 of 5 | 1.7 |
| Hurricane | Very Low | 41st | 2.6 of 5 | 0.03 |
| Hail | Relatively Low | 34th | 2.3 of 5 | 2.7 |
| Strong wind | Relatively Low | 33rd | 2.3 of 5 | 2.4 |
| Tornado | Relatively Low | 27th | 2.1 of 5 | 0.24 |
| Earthquake | Very Low | 21st | 1.8 of 5 | <0.01 |
| Wildfire | Very Low | 9th | 1.4 of 5 | <0.01 |
| Ice storm | Relatively Low | 7th | 1.3 of 5 | 0.33 |
| Winter weather | Very Low | 4th | 1.2 of 5 | 13.5 |
| Lightning | Relatively Moderate | 4th | 1.1 of 5 | 40.5 |
| Heat wave | Very Low | 3rd | 1.1 of 5 | 1.3 |
Perils not assessed in Armstrong 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 "Not Applicable" for this county |
Model hail, wind and flood exposure for Armstrong 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.