Marion County Solar Project

Marion County Solar Project is a 100 MW solar farm in Marion County, Ohio, operated by Marion County Solar Project, LLC. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 2026.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity
100 MW
100 MW net summer
Generating units
1
In service
2026
EIA plant ID
66860

Where it is

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County
Marion County, Ohio
Coordinates
40.6245, -83.1361
Balancing authority
PJM
Sector
IPP Non-CHP

Units, technology and status

Operator of record
Marion County Solar Project, LLC
Primary energy source
Solar
Technologies
Solar Photovoltaic
Status
Operating

Every plant Marion County Solar Project, LLC reports to EIA →

Marion County Solar Project: FAQ

Where is Marion County Solar Project?
In Marion County, Ohio (OH). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Marion County Solar Project?
100 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Marion County Solar Project?
EIA-860M names Marion County Solar Project, LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Marion County Solar Project LLC?
Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Marion County Solar Project, LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Marion County Solar Project LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Marion County Solar Project still running?
EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.