HydroOperatingISO-NE

Garvins Falls

Hydro power plant in Merrimack County, New Hampshire. 12.4 MW of nameplate capacity across 4 generators, operated by Central Rivers Power NH, LLC.

Also known as EIA plant 2357

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MerrimackChina Mill HydroPembroke HydroHooksettRolfe Canal HydroWheelabrator Concord FacilityGarvins Falls5 km
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6 plants within 15 km, from EIA coordinates.

Key facts

Capacity
12.4 MWNameplate
Generators
4 operatingEIA-860M, August 2026
Operating since
August 1925First generator online
Operator
Central Rivers Power NH, LLCEIA operator ID 62775
Grid
ISO-NEBalancing authority ISNE
Price nodes
1 ISONE nodeResource nodes with prices
Location
Merrimack County, NH43.1655, −71.5094
EIA plant ID
2357EIA plant page

Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.

How much power Garvins Falls produces

Free · EIA-923

Net generation, 2025

24.8 GWh

24,775 MWh, final

Capacity factor, 2025

22.8%

2024: 28.4%

January to July 2026

Not reported

Provisional. 0 of 7 months reported

Range, 2015 to 2025

24.8–44.2

GWh a year. Low 2025, high 2023

Annual net generation, GWhCapacity factor below each year
Annual net generation from EIA-923
YearNet generation, MWhCapacity factorMonths reported
200042,951Not reported12 of 12
200126,342Not reported12 of 12
200233,630Not reported12 of 12
200346,207Not reported12 of 12
200443,000Not reported12 of 12
200550,523Not reported12 of 12
200648,575Not reported12 of 12
200740,027Not reported12 of 12
200847,519Not reported12 of 12
200953,884Not reported12 of 12
201040,21437.0%12 of 12
201153,85849.6%12 of 12
201243,77240.2%12 of 12
201347,31343.6%12 of 12
201441,59538.3%12 of 12
201537,49534.5%12 of 12
201630,70328.2%12 of 12
201732,71430.1%12 of 12
201839,97336.8%12 of 12
201938,80135.7%12 of 12
202039,43536.2%12 of 12
202144,15940.7%12 of 12
202234,43031.7%12 of 12
202344,16340.7%12 of 12
202430,89928.4%12 of 12
202524,77522.8%12 of 12
2026 (provisional, partial year)Not reportedNot reported0 of 7

* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.

Power prices and basis

Free account · ISONE

Emissions

Free · EPA CAMPD

No EPA emissions units are linked to this plant.

Water use

Free · EIA-923 cooling, USGS

No EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.

Generators

Free · EIA-860M
GeneratorTechnologyNameplate MWOnline since
1Conventional Hydroelectric3.4December 1981
2Conventional Hydroelectric3.4December 1981
3Conventional Hydroelectric2.4August 1925
4Conventional Hydroelectric3.2August 1925

Ownership and offtake

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Ownership and offtake are part of Pro

Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Central Rivers Power NH, LLC as the operator, which is not always the owner.

Modeled data

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Pro adds modeled values for this plant. Everything above stays free.

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Power plants near Garvins Falls

More plants operated by Central Rivers Power NH, LLC

Questions about Garvins Falls

How much power does Garvins Falls produce?

Garvins Falls reported 24,775 MWh (24.8 GWh) of net generation in 2025, a 22.8% capacity factor on 12.4 MW of nameplate capacity.

Where is Garvins Falls?

Garvins Falls is in Merrimack County, New Hampshire, at 43.1655, −71.5094. It is in the ISO New England Inc. balancing area (ISNE).

Who operates Garvins Falls?

EIA-860M for August 2026 lists Central Rivers Power NH, LLC as the operator (EIA operator ID 62775). The operator is not always the owner.

When did Garvins Falls start operating?

Its first generator began operating in August 1925, according to EIA-860M.

Does InfraMap have power prices for Garvins Falls?

Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Garvins Falls, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.

Sources

  • EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
  • EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
  • ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05

Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page