35.9 MW Hydro operating in Windham, VT — ISO New England Inc.
35.9 MW
Nameplate Capacity
10
Generators
units
Conventional Hydroelectric
Technology
1909
Operating Since
Coordinates
42.7715, -72.5142
County
Windham, VT
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Great River Hydro, LLC | — | — |
| Owner(s) | Great River Hydro, LLC | — | — |
| Status | Operating | — | — |
Vernon Dam is a 35.9 MW hydroelectric power plant located in Windham County, Vermont. The plant began operating in 1909 and utilizes conventional hydroelectric technology. It consists of 10 generators and is owned and operated by Great River Hydro, LLC. The primary fuel source is water (WAT). Vernon Dam is the second-largest hydroelectric plant in Vermont out of 46, and ranks 380th nationally out of 1464 hydroelectric plants.
The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In the most recent year with available data, Vernon Dam generated 159,698 MWh of electricity, achieving a capacity factor of 50.6%. Financial data indicates a power purchase agreement (PPA) price of $60 per MWh, as reported to FERC.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
69 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
12.6K MWh
Latest Month
159.7K MWh
Annual Generation
50.6%
Capacity Factor
$60.0/MWh
PPA Price
Great River Hydro, LLC
Contract Seller
Point of Interconnection
Nearest Substation
Vernon Substation · 69 kV
Substation Distance
< 10 km
Operator
National Grid
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
599
Pricing Hub
.Z.VERMONT
Node Source
EIA-860 direct report
Great River Hydro, LLC; Notice of Availability of Environmental Assessment
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Last updated 2026-03-25
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