Waterbury 22
Washington County, Vermont · EIA plant ID 6520 · Operator: Green Mountain Power Corp
Nameplate6MWSummer 5 MW
Generators1in service
Net generation11GWh12 mo to Dec 2025
Capacity factor26%hydro units, summer MW
Heat rate—thermal plants only
First online1953
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 | 7.2 | 18.7% | — |
| 2002 | 9.4 | 38.4% | — |
| 2003 | 11.6 | 47.5% | — |
| 2004 | 11.4 | 50.0% | — |
| 2005 | 11.3 | 53.6% | — |
| 2006 | 14.9 | 70.7% | — |
| 2007 | 16.4 | 77.9% | — |
| 2008 | 16.3 | 77.3% | — |
| 2009 | 19.6 | 93.1% | — |
| 2010 | 19.6 | 44.7% | — |
| 2011 | 24.1 | 54.9% | — |
| 2012 | 16.9 | 38.6% | — |
| 2013 | 22.5 | 51.4% | — |
| 2014 | 17.5 | 40.0% | — |
| 2015 | 16.2 | 37.0% | — |
| 2016 | 13.8 | 31.4% | — |
| 2017 | 14.4 | 33.0% | — |
| 2018 | 7.1 | 16.2% | — |
| 2019 | 17.8 | 40.7% | — |
| 2020 | 14 | 31.9% | — |
| 2021 | 10.6 | 24.3% | — |
| 2022 | 11.9 | 27.1% | — |
| 2023 | 15.9 | 36.3% | — |
| 2024 | 15.2 | 34.5% | — |
| 2025 | 11.4 | 26.0% | — |
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 | 5.5 | 5 | Jun 1953 | Operating | — | coming soon |
Owner / operator
Operator: Green Mountain Power Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Green Mountain Power Corp | 100.0% | 6 MW |
Nearby plants
Within 80 km.
| Bolton Falls | 9 MW | 4.6 km |
| Moretown | retired | 8.9 km |
| Nebraska Valley Solar Farm | 1 MW | 9 km |
| Middlesex 2 | 3 MW | 12 km |
| Wrightsville Hydro Plant | 1 MW | 17.2 km |
| Jericho Landfill Solar Farm | 2 MW | 18.3 km |