Hardin Solar III
Solar power plant · Hardin County, Ohio
Nameplate capacity
250 MW
Rank in Ohio
#34
of 219 plants
In service since
2025
March 2025
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Hardin Solar Energy III
- County
- Hardin County
- Generating units
- 1
- Share of state capacity
- 0.70%
- Rank among solar plants in Ohio
- #5 of 76
- EIA plant code
- 68591
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| HARD3 | Solar Photovoltaic | 250 MW | 250 MW | 2025 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Ohio
| Hecate Energy Highland LLC | Solar | 300 MW |
| Yellowbud Solar, LLC | Solar | 274 MW |
| Scioto Ridge Wind Farm | Wind | 250 MW |
| Cadence Solar Energy Center | Solar | 240 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 250 MW solar plant and a 250 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Ohio power plants · What Ohio actually generates