78th largest plant in Pennsylvania · 3108th nationally
Southwark is a oil power plant in Pennsylvania with a nameplate capacity of 74.4 MW. It generates roughly 73 MWh per year — enough to power about 6 average U.S. homes.
Its capacity factor of 0% reflects intermittent or peaking operation. At 3633 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Southwark |
|---|---|
| Operator | Constellation Power, Inc |
| City | Philadelphia |
| County | Philadelphia County |
| State | Pennsylvania |
| ZIP | 19148 |
| Coordinates | 39.91440, -75.13500 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 3 | Petroleum Liquids | Distillate Oil | 18.6 MW | Operating | 1967 |
| 4 | Petroleum Liquids | Distillate Oil | 18.6 MW | Operating | 1967 |
| 5 | Petroleum Liquids | Distillate Oil | 18.6 MW | Operating | 1967 |
| 6 | Petroleum Liquids | Distillate Oil | 18.6 MW | Operating | 1968 |
| CO₂ | 133 metric tons |
|---|---|
| NOₓ | 1 metric tons |
| CO₂ Rate | 3633 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 |
Oil-fired plants typically run only during peak demand or grid emergencies because oil is expensive compared to gas and coal. They have the highest CO₂ emissions per MWh of any common generation technology.