Comerford
Hydro power plant in Grafton County, New Hampshire. 167.8 MW of nameplate capacity across 4 generators, operated by Great River Hydro, LLC.
Also known as Comerford Station Dam · Comerford Dam · EIA plant 2349
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 167.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- September 1930First generator online
- Operator
- Great River Hydro, LLCEIA operator ID 61122
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 4 ISONE nodesResource nodes with prices
- Location
- Grafton County, NH44.3251, −72.0010
- EIA plant ID
- 2349EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Comerford produces
Free · EIA-923Net generation, 2025
297 GWh
296,796 MWh, final
Capacity factor, 2025
20.2%
2024: 27.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
229.9–417.4
GWh a year. Low 2021, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 247,787 | Not reported | 12 of 12 |
| 2001 | 236,411 | Not reported | 12 of 12 |
| 2002 | 318,535 | Not reported | 12 of 12 |
| 2003 | 307,271 | Not reported | 12 of 12 |
| 2004 | 292,786 | Not reported | 12 of 12 |
| 2005 | 395,771 | Not reported | 11 of 12 |
| 2006 | 432,182 | Not reported | 12 of 12 |
| 2007 | 357,742 | Not reported | 12 of 12 |
| 2008 | 417,300 | Not reported | 11 of 12 |
| 2009 | 390,299 | Not reported | 12 of 12 |
| 2010 | 376,208 | 30.6% | 12 of 12 |
| 2011 | 398,272 | 32.4% | 12 of 12 |
| 2012 | 304,375 | 24.7% | 12 of 12 |
| 2013 | 323,101 | Not reported | 12 of 12 |
| 2014 | 353,812 | 28.8% | 12 of 12 |
| 2015 | 343,511 | Not reported | 12 of 12 |
| 2016 | 290,397 | 26.0% | 12 of 12 |
| 2017 | 379,605 | Not reported | 12 of 12 |
| 2018 | 352,500 | 24.0% | 12 of 12 |
| 2019 | 417,404 | 28.4% | 12 of 12 |
| 2020 | 323,704 | 22.0% | 12 of 12 |
| 2021 | 229,941 | 15.6% | 12 of 12 |
| 2022 | 323,071 | 22.0% | 12 of 12 |
| 2023 | 405,053 | 27.6% | 12 of 12 |
| 2024 | 400,481 | 27.2% | 12 of 12 |
| 2025 | 296,796 | 20.2% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo 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| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 22.0 | September 1930 |
| GEN2 | Conventional Hydroelectric | 48.6 | September 1930 |
| GEN3 | Conventional Hydroelectric | 48.6 | September 1930 |
| GEN4 | Conventional Hydroelectric | 48.6 | September 1930 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Great River Hydro, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Comerford
More plants operated by Great River Hydro, LLC
Questions about Comerford
How much power does Comerford produce?
Comerford reported 296,796 MWh (297 GWh) of net generation in 2025, a 20.2% capacity factor on 167.8 MW of nameplate capacity.
Where is Comerford?
Comerford is in Grafton County, New Hampshire, at 44.3251, −72.0010. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Comerford?
EIA-860M for August 2026 lists Great River Hydro, LLC as the operator (EIA operator ID 61122). The operator is not always the owner.
When did Comerford start operating?
Its first generator began operating in September 1930, according to EIA-860M.
Does InfraMap have power prices for Comerford?
Yes. InfraMap has ISONE day-ahead and real-time prices at 4 price nodes linked to Comerford, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page