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61.8 MW Hydro operating in Franklin, MA — ISO New England Inc.
61.8 MW
Nameplate Capacity
6
Generators
units
Conventional Hydroelectric
Technology
1915
Operating Since
Coordinates
42.5876, -72.5792
County
Franklin, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | FirstLight Power Resources, Inc. - MA | Firstlight Power Resources | — |
| Owner(s) | FirstLight Power Resources, Inc. - MA | ENGIE | — |
| Status | Operating | operating | — |
The Cabot hydroelectric plant, located in Franklin County, Massachusetts, has a total capacity of 61.8 MW. The plant began operating in 1915 and utilizes conventional hydroelectric technology. It consists of 6 generators and is owned by ENGIE, a company based in France. FirstLight Power Resources, Inc. - MA is the listed operator per EIA data.
In the most recent year with available data, the plant generated 304,242 MWh, achieving a capacity factor of 56.0%. Cabot operates within the ISO New England Inc. balancing authority and the NPCC NERC region. It is the 3rd largest hydroelectric plant in Massachusetts out of 31 such plants, and ranks 268th nationally out of 1464 hydroelectric plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ISO-NE
Market
ISO/RTO Member
NERC Region
NPCC — Northeast Power Coordinating Council
Balancing Authority
29.0K MWh
Latest Month
304.2K MWh
Annual Generation
56.0%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $141.8M
Point of Interconnection
Nearest Substation
Montague/Cabot Substation · 115 kV
Substation Distance
< 10 km
Operator
Eversource
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
N.MONTAGUE13.8 CABT
Pricing Hub
.H.INTERNAL_HUB
Node Source
EIA-860 direct report
Last updated 2026-03-26
View all articlesISO New England Inc. (ISNE)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP