Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Guernsey Power Station | South Field Energy |
|---|---|---|
| 2,055 MW | 1,210.4 MW | |
| Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle | |
| Guernsey Power Station LLC | South Field Energy, LLC | |
| 3 | 4 | |
| 12.15 TWh | 7.87 TWh | |
| 62.8% (2025) | 68.1% (2025) | |
| #7 of 538 | #60 of 538 | |
| 2026-06 | 2026-06 |