Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Cumberland (NJ) | Delaware City Plant |
|---|---|---|
| Capacity | 231.2 MW | 249 MW |
| Technology | Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine, Other Gases |
| Operator | Calpine New Jersey Generation LLC | Delaware City Refining Company LLC |
| Operating units | 2 | 6 |
| Latest 12-month generation | 59.9 GWh | 1.03 TWh |
| Latest complete-year capacity factor | 2.9% (2024) | 52.0% (2025) |
| National technology rank | #229 of 825 | #262 of 825 |
| Latest EIA report | 2024-12 | 2026-06 |