Essex Solar
Stark County, Illinois · EIA plant ID 69917 · Operator: SRC Partnership 15 LLC
Nameplate4MWSummer 4 MW
Generators1in service
Net generation5GWh12 mo to Dec 2025
Capacity factor23%solar units, summer MW
Heat rate—thermal plants only
First online2025
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2025 | 5.3 | 22.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ESSEX | Solar Photovoltaic | PV | 4 | 4 | May 2025 | Operating | — | coming soon |
Owner / operator
Operator: SRC Partnership 15 LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| SRC Partnership 15 LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Princeville Solar, LLC | 2 MW | 10.3 km |
| Camp Grove Wind Farm | 150 MW | 13.9 km |
| IL-Forefront Ameren-Truitt 2 | — | 16 km |
| IL-Forefront Ameren-Truitt 1 | — | 16 km |
| IL West Hallock Project1 | 2 MW | 17 km |
| IL - Forefront Ameren- Route 40 | — | 17.1 km |