CHESWICK POWER PLANT
Retired 2022Coal power plant
- Capacity
- 637 MW
- Primary fuel
- Coal
- County
- Allegheny County
- Operator
- NRG POWER MIDWEST LP
- EIA plant ID
- 8226
- Coordinates
- 40.5384, -79.7899
CHESWICK POWER PLANT, a retired 637 MW Coal power plant in Allegheny County, Pennsylvania. It was retired in 2022, according to EIA-860.
How CHESWICK POWER PLANT compares
It was retired in 2022 according to EIA-860, so it is not counted in Pennsylvania's operating fleet. Its operator, NRG POWER MIDWEST LP, runs 2 operating plants in Pennsylvania totaling 771 MW. It shares Allegheny County with 6 other operating plants, including ALLEGHENY ENERGY UNITS 3 4 & 5 and BRUNOT ISLAND.
Grid neighborhood
The nearest named substation is CABOT (500 kV), about 18.2 miles away; the closest transmission line found within 10 miles is a 138 kV line owned by WEST PENN POWER CO, under 0.1 miles away. Another 10 operating power plants totaling 1,866 MW sit within 25 miles; the largest is ARMSTRONG (688 MW, Natural Gas). Within 50 miles are 2 mapped data centers; the nearest is Crown Castle Pittsburgh (Allegheny Center Mall) in Pittsburgh, about 12.8 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860 retirement records and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
CHESWICK POWER PLANT is a retired 637 MW coal power plant in Allegheny County, PA, formerly operated by NRG POWER MIDWEST LP. Allegheny County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.0 of 5 at the 1st national percentile. Riverine flooding is the leading peril, rated Very High by FEMA at the 66th 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.
Allegheny County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Very High | 66th | 3.7 of 5 | 7.3 |
| Hurricane | Relatively Low | 40th | 2.6 of 5 | 0.03 |
| Winter weather | Relatively High | 39th | 2.6 of 5 | 11.2 |
| Earthquake | Relatively Low | 28th | 2.1 of 5 | <0.01 |
| Strong wind | Relatively High | 23rd | 1.9 of 5 | 2.3 |
| Tornado | Relatively High | 20th | 1.8 of 5 | 0.28 |
| Ice storm | Very High | 10th | 1.4 of 5 | 0.40 |
| Heat wave | Relatively Moderate | 9th | 1.3 of 5 | 1.9 |
| Lightning | Relatively High | 8th | 1.3 of 5 | 42.6 |
| Hail | Very Low | 5th | 1.2 of 5 | 3.2 |
| Wildfire | Very Low | 4th | 1.2 of 5 | <0.01 |
Perils not assessed in Allegheny 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 Allegheny 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.