Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Eddystone Generating Station | Marcus Hook Energy LP |
|---|---|---|
| Capacity | 861.6 MW | 836.1 MW |
| Technology | Petroleum Liquids, Natural Gas Steam Turbine | Natural Gas Fired Combined Cycle |
| Operator | Constellation Power, Inc | Marcus Hook Energy LP |
| Operating units | 8 | 4 |
| Latest 12-month generation | 60.8 GWh | 5.49 TWh |
| Latest complete-year capacity factor | 0.8% (2024) | 76.7% (2025) |
| National technology rank | #40 of 257 | #132 of 538 |
| Latest EIA report | 2024-12 | 2026-04 |