Posey Solar
Posey County, Indiana · EIA plant ID 66780 · Operator: Southern Indiana Gas & Elec Co
Nameplate191MWSummer 191 MW
Generators1in service
Net generation403GWh12 mo to Aug 2026
Capacity factor24%solar units, summer MW
Heat rate—thermal plants only
First online2025
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 269.8 | 24.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | PV | 190.8 | 190.8 | May 2025 | Operating | — | coming soon |
Owner / operator
Operator: Southern Indiana Gas & Elec Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southern Indiana Gas & Elec Co | 100.0% | 191 MW |
Nearby plants
Within 80 km.
| A B Brown | 647 MW | 2.7 km |
| Henderson County Solar | — | 16.9 km |
| SABIC Innovative Plastics Mt. Vernon | 108 MW | 17.4 km |
| Oak Hill Solar Array | 2 MW | 18.8 km |
| Patoka Solar | — | 24.1 km |
| Sebree Solar II | 150 MW | 28.1 km |