Vernon Dam
Windham County, Vermont · EIA plant ID 2352 · Operator: Great River Hydro, LLC
Nameplate36MWSummer 34 MW
Generators10in service
Net generation119GWh12 mo to Dec 2025
Capacity factor40%hydro units, summer MW
Heat rate—thermal plants only
First online1909
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 | 89.7 | 52.8% | — |
| 2002 | 115 | 67.8% | — |
| 2003 | 123.7 | 57.9% | — |
| 2004 | 124.8 | 59.2% | — |
| 2005 | 110.5 | 56.8% | — |
| 2006 | 130.2 | 67.0% | — |
| 2007 | 13.3 | 6.8% | — |
| 2008 | 170.4 | 59.2% | — |
| 2009 | 191.5 | 63.5% | — |
| 2010 | 160.6 | 53.3% | — |
| 2011 | 175.3 | 58.2% | — |
| 2012 | 149 | 49.3% | — |
| 2013 | 166.3 | 55.2% | — |
| 2014 | 161.2 | 53.5% | — |
| 2015 | 143.3 | 51.1% | — |
| 2016 | 140.1 | 49.9% | — |
| 2017 | 152.3 | 51.4% | — |
| 2018 | 162.4 | 54.8% | — |
| 2019 | 162.3 | 54.8% | — |
| 2020 | 142.4 | 47.9% | — |
| 2021 | 151.7 | 51.2% | — |
| 2022 | 140.1 | 47.3% | — |
| 2023 | 190.6 | 64.4% | — |
| 2024 | 159.7 | 53.8% | — |
| 2025 | 119.5 | 40.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 2 | 2.4 | Aug 1909 | Operating | — | coming soon |
| 10 | Conventional Hydroelectric | HY | 4.2 | 4 | Jan 1921 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 2 | 2.4 | Aug 1909 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 2 | 2.4 | Aug 1909 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 2.5 | 2.4 | Aug 1909 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 4.5 | 3.6 | Apr 2008 | Operating | — | coming soon |
| 6A | Conventional Hydroelectric | HY | 5 | 4.5 | Mar 2008 | Operating | — | coming soon |
| 7A | Conventional Hydroelectric | HY | 5 | 4.5 | Mar 2008 | Operating | — | coming soon |
| 8 | Conventional Hydroelectric | HY | 4.5 | 3.6 | Mar 2008 | Operating | — | coming soon |
| 9 | Conventional Hydroelectric | HY | 4.2 | 4 | Jan 1921 | Operating | — | coming soon |
| 6 | Conventional Hydroelectric | HY | 4.5 | 3.6 | Aug 1910 | Retired Jun 2004 | — | coming soon |
| 7 | Conventional Hydroelectric | HY | 4.5 | 3.6 | Aug 1910 | Retired Jun 2004 | — | 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% | 36 MW |
Nearby plants
Within 80 km.
| Kearsarge Gill | 2 MW | 11.6 km |
| Technology Drive Solar | 2 MW | 12.3 km |
| Brattleboro (Windham Landfill) | 5 MW | 13.7 km |
| Greenfield Solar PV | 2 MW | 15.6 km |
| NFM Solar Power LLC | 2 MW | 18.2 km |
| Northfield Mountain | 1,168 MW | 18.2 km |