Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Gregory Power Plant | Nueces Bay |
|---|---|---|
| Capacity | 469.8 MW | 730.2 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Gregory Power Partners LLC | City of San Antonio - (TX) |
| Operating units | 3 | 5 |
| Latest 12-month generation | 681.9 GWh | 1.95 TWh |
| Latest complete-year capacity factor | 15.5% (2025) | 28.5% (2025) |
| National technology rank | #315 of 538 | #163 of 538 |
| Latest EIA report | 2026-06 | 2026-06 |