Where is Galesburg Solar Array?

In Henderson County, Illinois (IL). 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 Galesburg Solar Array?

1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

Who owns Galesburg Solar Array?

EIA-860M names Onsite Partners, 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 Galesburg Solar Array LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Onsite Partners, 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 "Galesburg Solar Array LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Galesburg Solar Array still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Galesburg Solar Array

Galesburg Solar Array is a 1 MW solar farm in Henderson County, Illinois, operated by Onsite Partners, LLC. EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 2020.

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: 1.4 MW; 1.4 MW net summer
Generating units: 1
In service: 2020
EIA plant ID: 63399

Where it is

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County: Henderson County, Illinois
Coordinates: 40.9199, -90.9484
Balancing authority: MISO
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Onsite Partners, LLC
Primary energy source: Solar
Technologies: Solar Photovoltaic
Status: Operating

Every plant Onsite Partners, LLC reports to EIA →

Galesburg Solar Array: FAQ

Where is Galesburg Solar Array?: In Henderson County, Illinois (IL). 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 Galesburg Solar Array?: 1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Galesburg Solar Array?: EIA-860M names Onsite Partners, 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 Galesburg Solar Array LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Onsite Partners, 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 "Galesburg Solar Array LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Galesburg Solar Array still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.