Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | New Castle Plant | Allegheny Energy Units 3 4 & 5 |
|---|---|---|
| Capacity | 351.2 MW | 556 MW |
| Technology | Natural Gas Steam Turbine, Petroleum Liquids | Natural Gas Fired Combined Cycle |
| Operator | New Castle Power, LLC | Springdale Energy LLC |
| Operating units | 5 | 3 |
| Latest 12-month generation | 695.9 GWh | 4.34 TWh |
| Latest complete-year capacity factor | 22.6% (2024) | 90.5% (2025) |
| National technology rank | #75 of 257 | #283 of 538 |
| Latest EIA report | 2024-12 | 2026-04 |