Comerford
Grafton County, New Hampshire · EIA plant ID 2349 · Operator: Great River Hydro, LLC
Nameplate168MWSummer 166 MW
Generators4in service
Net generation297GWh12 mo to Dec 2025
Capacity factor20%hydro units, summer MW
Heat rate—thermal plants only
First online1930
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 236.4 | 20.2% | — |
| 2002 | 318.5 | 22.5% | — |
| 2003 | 307.3 | 21.7% | — |
| 2004 | 292.8 | 20.6% | — |
| 2005 | 395.8 | 28.0% | — |
| 2006 | 432.2 | 30.6% | — |
| 2007 | 357.7 | 28.2% | — |
| 2008 | 417.3 | 32.8% | — |
| 2009 | 390.3 | 30.8% | — |
| 2010 | 376.2 | 29.7% | — |
| 2011 | 398.3 | 31.4% | — |
| 2012 | 304.4 | 21.7% | — |
| 2013 | 323.1 | 22.0% | — |
| 2014 | 353.8 | 24.1% | — |
| 2015 | 343.5 | 23.6% | — |
| 2016 | 290.4 | 19.9% | — |
| 2017 | 379.6 | 26.1% | — |
| 2018 | 352.5 | 24.3% | — |
| 2019 | 417.4 | 28.7% | — |
| 2020 | 323.7 | 22.2% | — |
| 2021 | 229.9 | 15.8% | — |
| 2022 | 323.1 | 22.2% | — |
| 2023 | 405.1 | 27.9% | — |
| 2024 | 400.5 | 27.5% | — |
| 2025 | 296.8 | 20.4% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 22 | 22.5 | Sep 1930 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 48.6 | 47.8 | Sep 1930 | Operating | — | coming soon |
| GEN3 | Conventional Hydroelectric | HY | 48.6 | 47.8 | Sep 1930 | Operating | — | coming soon |
| GEN4 | Conventional Hydroelectric | HY | 48.6 | 47.8 | Sep 1930 | Operating | — | coming soon |
Owner / operator
Operator: Great River Hydro, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Great River Hydro, LLC | 100.0% | 168 MW |
Nearby plants
Within 80 km.
| East Barnet | 2 MW | 2.8 km |
| Mcindoes | 10 MW | 8.6 km |
| S C Moore | 195 MW | 10.2 km |
| Golden Solar | 2 MW | 12.4 km |
| Ryegate Power Station | 22 MW | 13.2 km |
| Dodge Falls Associates | 5 MW | 13.8 km |