Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Bacliff | Mark One Power Station |
|---|---|---|
| Capacity | 427.2 MW | 484 MW |
| Technology | Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine |
| Operator | PHR Holdings LLC | City of San Antonio - (TX) |
| Operating units | 6 | 8 |
| Latest 12-month generation | 105.5 GWh | 415.5 GWh |
| Latest complete-year capacity factor | 2.8% (2025) | 8.3% (2025) |
| National technology rank | #111 of 825 | #93 of 825 |
| Latest EIA report | 2026-06 | 2026-06 |