1.5 MW Hydro operating in Grafton, NH — ISO New England Inc.
1.5 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1988
Operating Since
Coordinates
43.6334, -72.3172
County
Grafton, NH
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Green Mountain Power Corp | — | — |
| Owner(s) | Enel North America, Inc. | — | — |
| Status | Operating | — | — |
Mascoma Hydro is a 1.5 MW hydroelectric power plant located in Grafton County, New Hampshire. The plant began operating in 1988 and is owned and operated by Green Mountain Power Corp. It utilizes conventional hydroelectric technology and consists of 3 generators. The primary fuel source is water (WAT).
The plant operates within the ISO New England Inc. balancing authority and the NPCC NERC region. In its latest year of reported generation, Mascoma Hydro produced 1,500 MWh of electricity, achieving a capacity factor of 11.5%. Mascoma Hydro is ranked as the 24th largest power plant in New Hampshire out of 32, and nationally it is ranked 1315 out of 1464.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
12.4 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
35 MWh
Latest Month
1.5K MWh
Annual Generation
11.5%
Capacity Factor
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Craft Hill Substation · 13 kV
Substation Distance
2.483 km
Operator
Liberty Utilities
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.SLAYTNHL13.8
Pricing Hub
.Z.NEWHAMPSHIRE
Node Source
Curated node match
Green Mountain Power Corporation; Notice of Application Ready for Environmental Analysis and Soliciting Comments, Recommendations, Terms and Conditions, and Prescriptions
Last updated 2026-03-25
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