Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Long Ridge Energy Generation | Allegheny Energy Units 3 4 & 5 |
|---|---|---|
| Capacity | 521.9 MW | 556 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Long Ridge Energy Generation LLC | Springdale Energy LLC |
| Operating units | 1 | 3 |
| Latest 12-month generation | 3.39 TWh | 4.34 TWh |
| Latest complete-year capacity factor | 83.3% (2025) | 90.5% (2025) |
| National technology rank | #304 of 538 | #283 of 538 |
| Latest EIA report | 2026-04 | 2026-04 |