Where is Mt. Tom Solar Project Hybrid?

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 Mt. Tom Solar Project Hybrid?

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

Who owns Mt. Tom Solar Project Hybrid?

EIA-860M names Mt. Tom Solar, 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 Mt. Tom Solar Project Hybrid LLC?

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

Is Mt. Tom Solar Project Hybrid still running?

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

Mt. Tom Solar Project Hybrid

Mt. Tom Solar Project Hybrid is a 8 MW solar farm in Hampden County, Massachusetts, operated by Mt. Tom Solar, LLC. EIA-860M lists 2 generating units here, inside ISO New England. Its units entered service between 2017 and 2019.

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: 7.6 MW; 7.6 MW net summer
Generating units: 2
In service: 2017–2019
EIA plant ID: 60906

Where it is

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County: Hampden County, Massachusetts
Coordinates: 42.2686, -72.603
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Mt. Tom Solar, LLC
Primary energy source: Solar
Technologies: Batteries, Solar Photovoltaic
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Solar 5 MW, Battery 3 MW. It is filed here under Solar, the source with the most capacity.

Every plant Mt. Tom Solar, LLC reports to EIA →

Mt. Tom Solar Project Hybrid: FAQ

Where is Mt. Tom Solar Project Hybrid?: 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 Mt. Tom Solar Project Hybrid?: 8 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Mt. Tom Solar Project Hybrid?: EIA-860M names Mt. Tom Solar, 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 Mt. Tom Solar Project Hybrid LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Mt. Tom Solar, 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 "Mt. Tom Solar Project Hybrid LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Mt. Tom Solar Project Hybrid still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.