Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Invenergy Nelson Expansion LLC Lee County | University Park South Will County |
|---|---|---|
| Capacity | 380 MW | 353.4 MW |
| Technology | Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine |
| Operator | Invenergy Services LLC | University Park Energy LLC |
| Operating units | 2 | 6 |
| Latest 12-month generation | 862.8 GWh | 70.0 GWh |
| Latest complete-year capacity factor | 25.8% (2025) | 2.3% (2024) |
| National technology rank | #132 of 825 | #152 of 825 |
| Latest EIA report | 2026-04 | 2024-12 |
Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.