Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Denton Energy Center | Spencer |
|---|---|---|
| Capacity | 225.6 MW | 126.5 MW |
| Technology | Natural Gas Internal Combustion Engine | Natural Gas Steam Turbine |
| Operator | City of Denton - (TX) | City of Garland - (TX) |
| Operating units | 12 | 2 |
| Latest 12-month generation | 305.6 GWh | 10.8 GWh |
| Latest complete-year capacity factor | 14.6% (2025) | 1.0% (2024) |
| National technology rank | #1 of 398 | #109 of 257 |
| Latest EIA report | 2026-06 | 2024-12 |