Masspower
Masspower is a 261 MW natural gas power plant in Hampden County, Massachusetts, operated by Masspower. EIA-860M lists 3 generating units here, inside ISO New England. Its units entered service in 1993.
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
- 260.9 MW
- 245 MW net summer
- Generating units
- 3
- In service
- 1993
- EIA plant ID
- 10726
Where it is
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- County
- Hampden County, Massachusetts
- Coordinates
- 42.1575, -72.5225
- Balancing authority
- ISNE
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Masspower
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle
- Status
- Operating
Masspower: FAQ
- Where is Masspower?
- 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 Masspower?
- 261 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Masspower?
- EIA-860M names Masspower 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 Masspower LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Masspower 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 "Masspower LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Masspower still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.