Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Johnson County | Freeport Energy Center |
|---|---|---|
| Capacity | 282.6 MW | 260 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Johnson County Power LLC | Dow Hydrocarbons and Resources LLC |
| Operating units | 2 | 2 |
| Latest 12-month generation | 1.32 TWh | 942.5 GWh |
| Latest complete-year capacity factor | 53.0% (2024) | 37.2% (2025) |
| National technology rank | #379 of 538 | #391 of 538 |
| Latest EIA report | 2024-12 | 2026-06 |