1 MW Hydro operating in Merrimack, NH — ISO New England Inc.
1 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1985
Operating Since
Coordinates
43.1897, -71.7483
County
Merrimack, NH
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Green Mountain Power Corp | Green Mountain Power | Green Mountain Power |
| Owner(s) | Green Mountain Power Corp | small shareholder(s) | — |
| Status | Operating | — | — |
EHC West Hopkinton is a 1 MW conventional hydroelectric power plant located in Merrimack County, New Hampshire. The plant began operating in 1985 and has one generator. While ownership is attributed to small shareholder(s), Green Mountain Power Corp is the listed operator. The plant utilizes water (WAT) as its primary fuel source.
In the most recent year of reported generation data, EHC West Hopkinton produced 1,754 MWh of electricity, achieving a capacity factor of 20.1%. The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. Based on capacity, EHC West Hopkinton is ranked as the 32nd largest power plant in New Hampshire out of 32 plants, and 1431st nationally out of 1464 plants.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
34.5 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0 MWh
Latest Month
1.8K MWh
Annual Generation
20.1%
Capacity Factor
No financial data available for this plant.
Market Position
ISO/RTO Market
ISO-NE
LMP Node
—
Pricing Hub
.Z.NEWHAMPSHIRE
Node Source
OSM spatial 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
View all articles