Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Freestone Energy Center | Wolf Hollow II |
|---|---|---|
| Capacity | 1,036 MW | 1,231.2 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Freestone Power Generation LLC | Constellation Power, Inc |
| Operating units | 6 | 3 |
| Latest 12-month generation | 6.02 TWh | 5.02 TWh |
| Latest complete-year capacity factor | 71.4% (2025) | 50.4% (2025) |
| National technology rank | #89 of 538 | #53 of 538 |
| Latest EIA report | 2026-06 | 2026-06 |