ALLEGHENY ENERGY UNITS 12 & 13
OperatingNatural Gas power plant
- Capacity
- 88 MW
- Primary fuel
- Natural Gas
- County
- Franklin County
- Operator
- ALLEGHENY ENERGY SUPPLY CO LLC
- Status
- Operating
- Commissioned
- 2001
- EIA plant ID
- 55654
- Generators
- 2
- Technology
- Natural Gas Fired Combustion Turbine
- Net generation (2024)
- 194 GWh
- Capacity factor (2024, EIA nameplate)
- 25%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 39.8670, -77.6864
ALLEGHENY ENERGY UNITS 12 & 13, an 88 MW Natural Gas power plant in Franklin County, Pennsylvania. One of 225 power plants tracked in Pennsylvania on Bywatts.
How ALLEGHENY ENERGY UNITS 12 & 13 compares
With 88 MW of capacity, ALLEGHENY ENERGY UNITS 12 & 13 ranks 51st among the 170 operating power plants Bywatts maps in Pennsylvania and 16th of the 28 operating Natural Gas plants in the state. It accounts for about 0.8% of Pennsylvania's operating Natural Gas capacity and 0.2% of all operating capacity in the state. Nationally it is the 706th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2001, it is newer than 50% of the 168 operating Pennsylvania plants with a recorded commissioning year. Its operator, ALLEGHENY ENERGY SUPPLY CO LLC, runs 8 operating plants in Pennsylvania totaling 932 MW. It shares Franklin County with 4 other operating plants, including ORCHARD PARK and MOUNTAIN VIEW.
EIA-860 lists 2 generators at the site with 88 MW of nameplate capacity, all natural gas fired combustion turbine technology. Net generation was 194 GWh in 2024 (a 25% capacity factor), down 6% from 2022.
Grid neighborhood
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 7 operating power plants totaling 94 MW sit within 25 miles; the largest is ORRTANNA (27 MW, Oil).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
ALLEGHENY ENERGY UNITS 12 & 13 is an 88 MW natural gas power plant in Franklin County, PA, operated by ALLEGHENY ENERGY SUPPLY CO LLC, commissioned in 2001. Franklin County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 21st national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 76th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Franklin County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 76th | 4.0 of 5 | 0.07 |
| Earthquake | Relatively Low | 50th | 3.0 of 5 | <0.01 |
| Riverine flooding | Relatively Moderate | 36th | 2.4 of 5 | 1.9 |
| Hail | Relatively Low | 34th | 2.3 of 5 | 2.7 |
| Wildfire | Very Low | 26th | 2.1 of 5 | <0.01 |
| Ice storm | Relatively Low | 23rd | 1.9 of 5 | 0.48 |
| Tornado | Relatively Low | 22nd | 1.9 of 5 | 0.39 |
| Lightning | Relatively Moderate | 16th | 1.7 of 5 | 36.9 |
| Strong wind | Relatively Moderate | 10th | 1.4 of 5 | 5.3 |
| Winter weather | Relatively Moderate | 9th | 1.4 of 5 | 12.5 |
| Heat wave | Relatively Low | 6th | 1.3 of 5 | 4.3 |
Perils not assessed in Franklin 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 Franklin 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.