Where is Plainfield Solar 1?

In Windham County, Connecticut (CT). 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 Plainfield Solar 1?

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

Who owns Plainfield Solar 1?

EIA-860M names Ecos Energy 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 Plainfield Solar 1 LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Ecos Energy 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 "Plainfield Solar 1 LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Plainfield Solar 1 still running?

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

Plainfield Solar 1

Plainfield Solar 1 is a 1 MW solar farm in Windham County, Connecticut, operated by Ecos Energy LLC. EIA-860M lists 1 generating unit here, inside ISO New England. 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 MW; 1 MW net summer
Generating units: 1
In service: 2020
EIA plant ID: 64370

Where it is

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County: Windham County, Connecticut
Coordinates: 41.68, -71.901
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Ecos Energy LLC
Primary energy source: Solar
Technologies: Solar Photovoltaic
Status: Operating

Every plant Ecos Energy LLC reports to EIA →

Plainfield Solar 1: FAQ

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