Dolgeville Hydro
Herkimer County, New York · EIA plant ID 10238 · Operator: EONY Generation Limited
Nameplate5MWSummer 5 MW
Generators1in service
Net generation11GWh12 mo to Dec 2025
Capacity factor24%hydro units, summer MW
Heat rate—thermal plants only
First online1985
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 | 11.1 | 25.3% | — |
| 2002 | 12.2 | 28.0% | — |
| 2003 | 21.3 | 48.7% | — |
| 2004 | 8.6 | 19.5% | — |
| 2005 | 8.2 | 18.6% | — |
| 2006 | 22 | 50.3% | — |
| 2007 | 17.5 | 39.8% | — |
| 2008 | 17.5 | 39.7% | — |
| 2009 | 14.8 | 33.8% | — |
| 2010 | 17.9 | 41.0% | — |
| 2011 | 23.5 | 53.7% | — |
| 2012 | 14.9 | 34.0% | — |
| 2013 | 17 | 38.9% | — |
| 2014 | 15.7 | 35.9% | — |
| 2015 | 7.4 | 16.8% | — |
| 2016 | 2.4 | 5.5% | — |
| 2017 | 0.1 | 0.5% | — |
| 2018 | 1.2 | 5.3% | — |
| 2019 | 0.5 | — | — |
| 2020 | 2 | — | — |
| 2021 | 12 | 27.5% | — |
| 2022 | 10.3 | 23.4% | — |
| 2023 | 14.1 | 30.9% | — |
| 2024 | 11.6 | 25.4% | — |
| 2025 | 11 | 24.2% | — |
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 | 5 | 5.2 | Jul 1985 | Operating | — | coming soon |
Owner / operator
Operator: EONY Generation Limited. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| EONY Generation Limited | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Inghams | 6 MW | 3.3 km |
| Bantam Solar | 5 MW | 3.7 km |
| Kearsarge Oppenheim CSG | 1 MW | 4.2 km |
| SunEast Flat Hill Solar Project | — | 5.7 km |
| SunEast Grassy Knoll Solar Project | — | 6.8 km |
| SunEast Hills Solar Project | — | 7.1 km |