Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Allegheny Energy Units 3 4 & 5 | Armstrong |
|---|---|---|
| 556 MW | 688 MW | |
| Natural Gas Fired Combined Cycle | Natural Gas Fired Combustion Turbine | |
| Springdale Energy LLC | Armstrong Power LLC | |
| 3 | 4 | |
| 3.79 TWh | 1.15 TWh | |
| 90.5% (2025) | 21.3% (2025) | |
| #283 of 538 | #51 of 825 | |
| 2026-06 | 2026-06 |