Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Ontelaunee Energy Center | Ironwood LLC |
|---|---|---|
| 728 MW | 777.6 MW | |
| Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle | |
| Ontelaunee Energy Center | Helix Ironwood LLC | |
| 3 | 3 | |
| 3.63 TWh | 4.05 TWh | |
| 64.5% (2025) | 71.9% (2025) | |
| #166 of 538 | #151 of 538 | |
| 2026-06 | 2026-06 |