USS Middle SolarUnder construction
Grundy County, Illinois · EIA plant ID 69882 · Operator: USS Middle Solar LLC
5 MW under construction (Solar Photovoltaic), first expected Dec 2026 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service · 5 MW building
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| USMID | Solar Photovoltaic | PV | 5 | 5 | planned Dec 2026 | Under construction | — | coming soon |
Owner / operator
Operator: USS Middle Solar LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| IL - Renewable Properties - Bobcat - Whi | — | 6.4 km |
| SPG IL Valley Run CSG | 2 MW | 6.7 km |
| Morris Cogeneration LLC | 219 MW | 9.3 km |
| Tully 1 | 2 MW | 13.4 km |
| Dresden Island Hydroelectric Project | — | 13.6 km |
| CPV Three Rivers Energy Center | 1,300 MW | 14.1 km |