HUNTERSTOWN
OperatingNatural Gas power plant
- Capacity
- 898 MW
- Primary fuel
- Natural Gas
- County
- Adams County
- Operator
- NRG WHOLESALE GENERATION LP
- Status
- Operating
- Commissioned
- 2003
- EIA plant ID
- 55976
- Generators
- 4
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 5,465 GWh
- Capacity factor (2024, EIA nameplate)
- 69%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 39.8727, -77.1672
HUNTERSTOWN, an 898 MW Natural Gas power plant in Adams County, Pennsylvania. Operated by NRG WHOLESALE GENERATION LP, commissioned 2003.
How HUNTERSTOWN compares
With 898 MW of capacity, HUNTERSTOWN ranks 14th among the 170 operating power plants Bywatts maps in Pennsylvania and 3rd of the 28 operating Natural Gas plants in the state. It accounts for about 8.4% of Pennsylvania's operating Natural Gas capacity and 2.3% of all operating capacity in the state. Nationally it is the 126th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2003, it is newer than 56% of the 168 operating Pennsylvania plants with a recorded commissioning year. Its operator, NRG WHOLESALE GENERATION LP, runs 2 operating plants in Pennsylvania totaling 1,483 MW. It shares Adams County with 3 other operating plants, including HUNTERSTOWN and ORRTANNA.
EIA-860 lists 4 generators at the site with 898 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 5,465 GWh in 2024 (a 69% capacity factor), down 8% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 500 kV line owned by METROPOLITAN EDISON CO, under 0.1 miles away. Another 9 operating power plants totaling 293 MW sit within 25 miles; the largest is P H GLATFELTER (110 MW, Coal). Within 50 miles is one mapped data center, Lumen Baltimore in Baltimore, about 49.6 miles away.
Computed by Bywatts from HIFLD power plant and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
HUNTERSTOWN is an 898 MW natural gas power plant in Adams County, PA, operated by NRG WHOLESALE GENERATION LP, commissioned in 2003. Adams County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.6 of 5 at the 15th national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 79th 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.
Adams County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 79th | 4.1 of 5 | 0.08 |
| Earthquake | Relatively Low | 56th | 3.2 of 5 | <0.01 |
| Strong wind | Relatively Moderate | 50th | 3.0 of 5 | 6.5 |
| Riverine flooding | Relatively Moderate | 31st | 2.2 of 5 | 1.6 |
| Tornado | Relatively Low | 31st | 2.2 of 5 | 0.32 |
| Ice storm | Relatively Low | 25th | 2.0 of 5 | 0.92 |
| Wildfire | Very Low | 22nd | 1.9 of 5 | <0.01 |
| Lightning | Relatively Low | 20th | 1.8 of 5 | 37.3 |
| Hail | Very Low | 19th | 1.7 of 5 | 3.1 |
| Winter weather | Relatively Moderate | 11th | 1.4 of 5 | 11.8 |
| Heat wave | Relatively Low | 7th | 1.3 of 5 | 4.8 |
Perils not assessed in Adams 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 Adams 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.