Hardin Solar III
Hardin County, Ohio · EIA plant ID 68591 · Operator: Hardin Solar Energy III
Nameplate250MWSummer 250 MW
Generators1in service
Net generation530GWh12 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 | 470.6 | 25.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HARD3 | Solar Photovoltaic | PV | 250 | 250 | Mar 2025 | Operating | — | coming soon |
Owner / operator
Operator: Hardin Solar Energy III. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Hardin Solar Energy III | 100.0% | 250 MW |
Nearby plants
Within 80 km.
| Hardin Solar Energy LLC | 150 MW | 3 km |
| Hardin Solar Energy II LLC | 150 MW | 5.5 km |
| Ohio Northern University Solar Site | 3 MW | 9.4 km |
| Hog Creek Wind Project | 66 MW | 13.5 km |
| Scioto Ridge Wind Farm | 250 MW | 14.3 km |
| AEP Bluffton NaS | retired | 24.7 km |