Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Greens Bayou | ExxonMobil Baytown Turbine |
|---|---|---|
| Capacity | 432 MW | 381.8 MW |
| Technology | Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine |
| Operator | NRG Texas Power LLC | Exxon Mobil Refining and Supply Co. |
| Operating units | 7 | 5 |
| Latest 12-month generation | 37.1 GWh | 2.56 TWh |
| Latest complete-year capacity factor | 1.0% (2024) | 77.8% (2025) |
| National technology rank | #64 of 257 | #127 of 825 |
| Latest EIA report | 2024-12 | 2026-06 |