Essex Junction 19
Chittenden County, Vermont · EIA plant ID 3737 · Operator: Green Mountain Power Corp
Nameplate16MWSummer 15 MW
Generators9in service
Net generation37GWh12 mo to Aug 2026
Capacity factor52%hydro units, summer MW
Heat rate7,654Btu/kWhfossil units, electric fuel, HHV
First online1917
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 19.4 | 28.6% | — |
| 2002 | 31.6 | 45.0% | — |
| 2003 | 37.6 | 53.5% | 11,606 |
| 2004 | 38.4 | 54.5% | 11,546 |
| 2005 | 41.1 | 58.5% | 14,086 |
| 2006 | 50.1 | 71.4% | 12,038 |
| 2007 | 40.3 | 63.7% | 12,386 |
| 2008 | 50.2 | 71.9% | 9,870 |
| 2009 | 47.8 | 67.4% | 10,951 |
| 2010 | 44.1 | 61.8% | 9,958 |
| 2011 | 44.4 | 62.7% | 10,929 |
| 2012 | 40.7 | 57.9% | 11,780 |
| 2013 | 47 | 66.1% | 10,084 |
| 2014 | 36.9 | 51.1% | 9,862 |
| 2015 | 38.8 | 54.3% | 10,361 |
| 2016 | 31 | 43.8% | 10,225 |
| 2017 | 34.6 | 48.3% | 9,786 |
| 2018 | 32 | 45.0% | 10,422 |
| 2019 | 44 | 62.7% | 10,286 |
| 2020 | 35.7 | 50.6% | 10,695 |
| 2021 | 34.5 | 49.1% | 10,532 |
| 2022 | 35.7 | 50.6% | 19,351 |
| 2023 | 50.8 | 72.3% | 8,911 |
| 2024 | 42 | 59.5% | 8,196 |
| 2025 | 33.5 | 47.6% | 7,609 |
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 |
|---|---|---|---|---|---|---|---|---|
| H1 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jan 1917 | Operating | — | coming soon |
| H2 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jan 1917 | Operating | — | coming soon |
| H3 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jan 1917 | Operating | — | coming soon |
| H4 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jan 1917 | Operating | — | coming soon |
| H9 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Mar 2008 | Operating | — | coming soon |
| IC-5 | Petroleum Liquids | IC | 2 | 1.8 | Oct 2007 | Operating | — | coming soon |
| IC-6 | Petroleum Liquids | IC | 2 | 1.8 | Oct 2007 | Operating | — | coming soon |
| IC-7 | Petroleum Liquids | IC | 2 | 1.8 | Oct 2007 | Operating | — | coming soon |
| IC-8 | Petroleum Liquids | IC | 2 | 1.8 | Oct 2007 | Operating | — | coming soon |
| IC5 | Petroleum Liquids | IC | 1 | 1 | Oct 1947 | Retired May 2007 | — | coming soon |
| IC6 | Petroleum Liquids | IC | 1 | 1 | Oct 1947 | Retired May 2007 | — | coming soon |
| IC7 | Petroleum Liquids | IC | 1 | 1 | Oct 1947 | Retired May 2007 | — | coming soon |
| IC8 | Petroleum Liquids | IC | 1 | 1 | Oct 1947 | Retired May 2007 | — | 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% | 16 MW |
Nearby plants
Within 80 km.
| Essex VT BESS 1 | — | 0.8 km |
| Whitcomb Solar Farm | 2 MW | 1.7 km |
| GMP Solar - Williston | 5 MW | 2.1 km |
| 158th Fighter Wing Solar Farm | 1 MW | 3 km |
| Gorge 18 | 3 MW | 4.3 km |
| Colchester 16 | 18 MW | 4.4 km |