Garvins Falls
Merrimack County, New Hampshire · EIA plant ID 2357 · Operator: Central Rivers Power NH, LLC
Nameplate12MWSummer 12 MW
Generators4in service
Net generation25GWh12 mo to Dec 2025
Capacity factor23%hydro units, summer MW
Heat rate—thermal plants only
First online1925
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 | 26.3 | 24.9% | — |
| 2002 | 33.6 | 31.0% | — |
| 2003 | 46.2 | 42.5% | — |
| 2004 | 43 | 39.5% | — |
| 2005 | 50.5 | 46.5% | — |
| 2006 | 48.6 | 44.7% | — |
| 2007 | 40 | 36.9% | — |
| 2008 | 47.5 | 43.6% | — |
| 2009 | 53.9 | 49.6% | — |
| 2010 | 40.2 | 37.3% | — |
| 2011 | 53.9 | 50.0% | — |
| 2012 | 43.8 | 40.5% | — |
| 2013 | 47.3 | 43.9% | — |
| 2014 | 41.6 | 38.6% | — |
| 2015 | 37.5 | 34.8% | — |
| 2016 | 30.7 | 28.4% | — |
| 2017 | 32.7 | 30.4% | — |
| 2018 | 40 | 37.1% | — |
| 2019 | 38.8 | 36.0% | — |
| 2020 | 39.4 | 36.5% | — |
| 2021 | 44.2 | 41.0% | — |
| 2022 | 34.4 | 31.9% | — |
| 2023 | 44.2 | 41.0% | — |
| 2024 | 30.9 | 28.6% | — |
| 2025 | 24.8 | 23.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 3.4 | 3.4 | Dec 1981 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 3.4 | 3.3 | Dec 1981 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 2.4 | 2.4 | Aug 1925 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 3.2 | 3.2 | Aug 1925 | Operating | — | coming soon |
Owner / operator
Operator: Central Rivers Power NH, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Central Rivers Power NH, LLC | 100.0% | 12 MW |
Nearby plants
Within 80 km.
| Merrimack | 496 MW | 4.2 km |
| China Mill Hydro | 2 MW | 5.7 km |
| Pembroke Hydro | 3 MW | 6 km |
| Hooksett | 2 MW | 7.9 km |
| Rolfe Canal Hydro | 4 MW | 14.3 km |
| Wheelabrator Concord Facility | 14 MW | 14.5 km |