Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Essential Power Rock Springs LLC | Marcus Hook Energy LP |
|---|---|---|
| 795.6 MW | 836.1 MW | |
| Natural Gas Fired Combustion Turbine | Natural Gas Fired Combined Cycle | |
| Essential Power Operating Services LLC | Marcus Hook Energy LP | |
| 4 | 4 | |
| 179.0 GWh | 5.93 TWh | |
| 2.6% (2024) | 76.7% (2025) | |
| #29 of 825 | #132 of 538 | |
| 2024-12 | 2026-06 |