In Hampden County, Massachusetts (MA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

1 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.

EIA-860M names Central Rivers Power MA, 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 Dwight LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Central Rivers Power MA, 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 "Dwight LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Dwight still running?

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

Dwight

Dwight is a 1 MW hydroelectric power plant in Hampden County, Massachusetts, operated by Central Rivers Power MA, LLC. EIA-860M lists 3 generating units here, inside ISO New England. Its units entered service in 1920.

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: 1.2 MW; 1.2 MW net summer
Generating units: 3
In service: 1920
EIA plant ID: 6378

Where it is

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County: Hampden County, Massachusetts
Coordinates: 42.1495, -72.6109
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Central Rivers Power MA, LLC
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant Central Rivers Power MA, LLC reports to EIA →

Dwight: FAQ

Where is Dwight?: In Hampden County, Massachusetts (MA). 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 Dwight?: 1 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns Dwight?: EIA-860M names Central Rivers Power MA, 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 Dwight LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Central Rivers Power MA, 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 "Dwight LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Dwight still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.