Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | R W Miller | Ray Olinger |
|---|---|---|
| Capacity | 537.6 MW | 427.7 MW |
| Technology | Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine |
| Operator | RW Miller Power LLC | City of Garland - (TX) |
| Operating units | 5 | 4 |
| Latest 12-month generation | 722.3 GWh | 40.4 GWh |
| Latest complete-year capacity factor | 10.1% (2024) | 1.1% (2024) |
| National technology rank | #72 of 257 | #76 of 257 |
| Latest EIA report | 2026-06 | 2024-12 |