26th largest plant in Pennsylvania · 398th nationally
Marcus Hook Energy Lp is a natural gas power plant in Pennsylvania with a nameplate capacity of 836 MW. It generates roughly 5.9M MWh per year — enough to power about 562,594 average U.S. homes.
Its capacity factor of 81% means it runs nearly around-the-clock as baseload generation. At 812 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 (836 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 | Marcus Hook Energy Lp |
|---|---|
| Operator | Marcus Hook Energy Lp |
| City | Marcus Hook |
| County | Delaware County |
| State | Pennsylvania |
| ZIP | 19061 |
| Coordinates | 39.80704, -75.42161 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| STG | Natural Gas Fired Combined Cycle | Natural Gas | 272 MW | Operating | 2004 |
| CT13 | Natural Gas Fired Combined Cycle | Natural Gas | 188 MW | Operating | 2004 |
| CT1A | Natural Gas Fired Combined Cycle | Natural Gas | 188 MW | Operating | 2004 |
| CTIB | Natural Gas Fired Combined Cycle | Natural Gas | 188 MW | Operating | 2004 |
| Owner | Location | Share |
|---|---|---|
| Jera Energy America, Llc | Houston, TX | 5000.0% |
| Egco Tower | 5000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 2.4M metric tons |
|---|---|
| SO₂ | 12 metric tons |
| NOₓ | 189 metric tons |
| CO₂ Rate | 812 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.