47th largest plant in Pennsylvania · 1624th nationally
Grays Ferry Cogeneration is a natural gas power plant in Pennsylvania with a nameplate capacity of 193 MW. It generates roughly 1.2M MWh per year — enough to power about 111,734 average U.S. homes.
Its capacity factor of 70% puts it in the middle range — running steadily but not full-time. At 637 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (193 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 | Grays Ferry Cogeneration |
|---|---|
| Operator | Grays Ferry Cogen Partnership |
| City | Philadelphia |
| County | Philadelphia County |
| State | Pennsylvania |
| ZIP | 19146 |
| Coordinates | 39.94222, -75.18807 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN2 | Natural Gas Fired Combustion Turbine | Natural Gas | 135 MW | Operating | 1997 |
| GEN1 | Natural Gas Steam Turbine | Natural Gas | 57.6 MW | Operating | 1997 |
| CO₂ | 373.7k metric tons |
|---|---|
| SO₂ | 2 metric tons |
| NOₓ | 107 metric tons |
| CO₂ Rate | 637 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.