22nd largest plant in Pennsylvania · 370th nationally
Hunterstown Power Plant is a natural gas power plant in Pennsylvania with a nameplate capacity of 898 MW. It generates roughly 5.1M MWh per year — enough to power about 481,671 average U.S. homes.
Its capacity factor of 64% puts it in the middle range — running steadily but not full-time. At 850 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (898 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Hunterstown Power Plant |
|---|---|
| Operator | Hunterstown Generation, Llc |
| City | Gettysburg |
| County | Adams County |
| State | Pennsylvania |
| ZIP | 17325 |
| Coordinates | 39.87250, -77.16720 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 401 | Natural Gas Fired Combined Cycle | Natural Gas | 361 MW | Operating | 2003 |
| 101 | Natural Gas Fired Combined Cycle | Natural Gas | 179 MW | Operating | 2003 |
| 201 | Natural Gas Fired Combined Cycle | Natural Gas | 179 MW | Operating | 2003 |
| 301 | Natural Gas Fired Combined Cycle | Natural Gas | 179 MW | Operating | 2003 |
| CO₂ | 2.2M metric tons |
|---|---|
| SO₂ | 11 metric tons |
| NOₓ | 109 metric tons |
| CO₂ Rate | 850 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | RFC |
|---|---|
| Balancing Authority | Pjm Interconnection, Llc |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.