Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Marcus Hook Energy LP | Eddystone Generating Station |
|---|---|---|
| Capacity | 836.1 MW | 861.6 MW |
| Technology | Natural Gas Fired Combined Cycle | Petroleum Liquids, Natural Gas Steam Turbine |
| Operator | Marcus Hook Energy LP | Constellation Power, Inc |
| Operating units | 4 | 8 |
| Latest 12-month generation | 5.93 TWh | 60.8 GWh |
| Latest complete-year capacity factor | 76.7% (2025) | 0.8% (2024) |
| National technology rank | #132 of 538 | #40 of 257 |
| Latest EIA report | 2026-06 | 2024-12 |