Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | York Energy Center | Brunner Island |
|---|---|---|
| 1,449.4 MW | 1,616.1 MW | |
| Natural Gas Fired Combined Cycle | Natural Gas Steam Turbine | |
| Calpine Mid-Merit LLC | Brunner Island LLC | |
| 7 | 6 | |
| 9.00 TWh | 3.94 TWh | |
| 69.2% (2025) | 29.6% (2025) | |
| #24 of 538 | #8 of 257 | |
| 2026-06 | 2026-06 |