Marion County Solar Project
Solar power plant · Marion County, Ohio
Nameplate capacity
100 MW
Rank in Ohio
#59
of 219 plants
In service since
2026
March 2026
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Marion County Solar Project, LLC
- County
- Marion County
- Generating units
- 1
- Share of state capacity
- 0.28%
- Rank among solar plants in Ohio
- #21 of 76
- EIA plant code
- 66860
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| USMNC | Solar Photovoltaic | 100 MW | 100 MW | 2026 | 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
| Paulding Wind Farm III | Wind | 101 MW |
| Buckeye Solar | Solar | 100 MW |
| New Market Solar | Solar | 100 MW |
| Pickaway Solar | Solar | 100 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 100 MW solar plant and a 100 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