Where is Hadley Falls?

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 Hadley Falls?

33 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.

Who owns Hadley Falls?

EIA-860M names City of Holyoke Gas and Elec Dept - (MA) 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 Hadley Falls LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Holyoke Gas and Elec Dept - (MA) 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 "Hadley Falls LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Hadley Falls still running?

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

Hadley Falls

Hadley Falls is a 33 MW hydroelectric power plant in Hampden County, Massachusetts, operated by City of Holyoke Gas and Elec Dept - (MA). EIA-860M lists 2 generating units here, inside ISO New England. Its units entered service between 1952 and 1983.

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: 33.4 MW; 33.1 MW net summer
Generating units: 2
In service: 1952–1983
EIA plant ID: 1605

Where it is

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County: Hampden County, Massachusetts
Coordinates: 42.2119, -72.6036
Balancing authority: ISNE
Sector: Electric Utility

Units, technology and status

Operator of record: City of Holyoke Gas and Elec Dept - (MA)
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant City of Holyoke Gas and Elec Dept - (MA) reports to EIA →

Hadley Falls: FAQ

Where is Hadley Falls?: 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 Hadley Falls?: 33 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Hadley Falls?: EIA-860M names City of Holyoke Gas and Elec Dept - (MA) 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 Hadley Falls LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Holyoke Gas and Elec Dept - (MA) 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 "Hadley Falls LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Hadley Falls still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.