S C Moore — Plant Summary
- EIA Plant ID
- 2351
- Capacity
- 195.4 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Grafton, NH
- Operating Since
- 1957
- Generators
- 5
- Operator
- Great River Hydro, LLC
- Parent Company
- —
- Annual Generation
- 341,463 MWh
- Capacity Factor
- 19.8%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
S C Moore
OperatingHydro
Ranked #1 of 32 Hydro plants in NH#97 of 1454 nationally
195.4 MW Hydro operating in Grafton, NH — ISO New England Inc.
EIAGEMWD
195.4 MW
Nameplate Capacity
5
Generators
units
Conventional Hydroelectric
Technology
1957
Operating Since
Location
Coordinates
44.3356, -71.8742
County
Grafton, NH
Nearby Plants
- ComerfordHydro167.8 MW · 10.2 km
- East BarnetHydro2.2 MW · 12.9 km
- Golden SolarSolar2.2 MW · 13.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Great River Hydro, LLC | Great River Hydro | — |
| Owner(s) | Great River Hydro, LLC | Great River Hydro LLC [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as Great River Hydro LLC [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Moore Dam is a major hydroelectric dam on the Upper Connecticut River between Grafton County, New Hampshire and Caledonia County, Vermont in the northeastern United States. The dam is located near Littleton, New Hampshire, and forms the 3,490-acre (1,410 ha) Moore Reservoir. The Moore Station is the largest conventional hydroelectric plant in New England, in terms of installed capacity and average power generation. The dam and reservoir also provide flood control, recreational boating and fishing.
Read more on WikipediaThe S C Moore hydroelectric plant is located in Grafton County, New Hampshire. It has a total capacity of 195.4 MW across five generators, making it the largest of two hydroelectric plants in the state. The plant began operating in 1957 and is owned and operated by Great River Hydro, LLC. It utilizes conventional hydroelectric technology and its primary fuel source is water (WAT).
The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In the latest year with available data, the S C Moore plant generated 341,463 MWh, achieving a capacity factor of 19.8%. Financial data indicates that the plant has a power purchase agreement (PPA) price of $60 per MWh, as reported to FERC.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
29.2K MWh
Latest Month
341.5K MWh
Annual Generation
19.8%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Electric Quarterly ReportsMEDIUM
$60.0/MWh
PPA Price
Great River Hydro, LLC
Contract Seller
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Moore Substation · 230 kV
Substation Distance
< 10 km
Operator
National Grid
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
47370
Pricing Hub
.Z.NEWHAMPSHIRE
Node Source
EIA-860 direct report
News & Articles (5)Beta
Regulatory·permitting
Great River Hydro, LLC; Notice of Availability of Environmental Assessment
Federal Register (FERC)·3 weeks ago
Regulatory·permitting
Great River Hydro, LLC; Notice of Availability of Environmental Assessment
Federal Register (FERC)·3 weeks ago
Regulatory·permitting
Great River Hydro, LLC; Notice of Availability of Environmental Assessment
Federal Register (FERC)·3 weeks ago
Regulatory·permitting
Great River Hydro, LLC; Notice of Availability of Environmental Assessment
Federal Register (FERC)·3 weeks ago
Last updated 2026-03-25
View all 5 articles