Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Flint Creek | John Twitty Energy Center |
|---|---|---|
| Capacity | 558 MW | 603 MW |
| Technology | Conventional Steam Coal | Conventional Steam Coal, Natural Gas Fired Combustion Turbine |
| Operator | Southwestern Electric Power Co | City Utilities of Springfield - (MO) |
| Operating units | 1 | 4 |
| Latest 12-month generation | 2.99 TWh | 1.89 TWh |
| Latest complete-year capacity factor | 60.3% (2025) | 39.1% (2025) |
| National technology rank | #118 of 206 | #125 of 206 |
| Latest EIA report | 2026-04 | 2026-04 |