Unionville Hydro Project 2499 NY
Hydro power plant in St Lawrence County, New York. 3 MW of nameplate capacity across 1 generator, operated by Erie Boulevard Hydropower LP.
Also known as Unionville Hydro Power Plant · EIA plant 50269
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 3 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 1984First generator online
- Operator
- Erie Boulevard Hydropower LPEIA operator ID 5914
- Grid
- NYISOBalancing authority NYIS
- Price nodes
- None linkedNo verified ISO node
- Location
- St Lawrence County, NY44.7145, −74.9966
- EIA plant ID
- 50269EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Unionville Hydro Project 2499 NY produces
Free · EIA-923Net generation, 2025
11.2 GWh
11,166 MWh, final
Capacity factor, 2025
42.5%
2024: 50.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
10.9–16.0
GWh a year. Low 2020, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 15,961 | Not reported | 12 of 12 |
| 2002 | 15,914 | Not reported | 12 of 12 |
| 2003 | 16,772 | Not reported | 12 of 12 |
| 2004 | 17,076 | Not reported | 12 of 12 |
| 2005 | 16,844 | Not reported | 12 of 12 |
| 2006 | 15,678 | Not reported | 12 of 12 |
| 2007 | 11,328 | Not reported | 12 of 12 |
| 2008 | 14,524 | Not reported | 12 of 12 |
| 2009 | 11,269 | Not reported | 12 of 12 |
| 2010 | 12,109 | 46.1% | 12 of 12 |
| 2011 | 15,272 | 58.1% | 12 of 12 |
| 2012 | 13,038 | 49.5% | 12 of 12 |
| 2013 | 16,831 | 64.0% | 12 of 12 |
| 2014 | 14,579 | 55.5% | 12 of 12 |
| 2015 | 13,271 | 50.5% | 12 of 12 |
| 2016 | 12,410 | 47.1% | 12 of 12 |
| 2017 | 16,046 | 61.1% | 12 of 12 |
| 2018 | 12,708 | 48.4% | 12 of 12 |
| 2019 | 14,741 | 56.1% | 12 of 12 |
| 2020 | 10,918 | 41.4% | 12 of 12 |
| 2021 | 14,196 | 54.0% | 12 of 12 |
| 2022 | 13,677 | 52.0% | 12 of 12 |
| 2023 | 14,924 | 56.8% | 12 of 12 |
| 2024 | 13,344 | 50.6% | 12 of 12 |
| 2025 | 11,166 | 42.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| HY1 | Conventional Hydroelectric | 3.0 | July 1984 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Erie Boulevard Hydropower LP as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Unionville Hydro Project 2499 NY
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Questions about Unionville Hydro Project 2499 NY
How much power does Unionville Hydro Project 2499 NY produce?
Unionville Hydro Project 2499 NY reported 11,166 MWh (11.2 GWh) of net generation in 2025, a 42.5% capacity factor on 3 MW of nameplate capacity.
Where is Unionville Hydro Project 2499 NY?
Unionville Hydro Project 2499 NY is in St Lawrence County, New York, at 44.7145, −74.9966. It is in the New York Independent System Operator balancing area (NYIS).
Who operates Unionville Hydro Project 2499 NY?
EIA-860M for August 2026 lists Erie Boulevard Hydropower LP as the operator (EIA operator ID 5914). The operator is not always the owner.
When did Unionville Hydro Project 2499 NY start operating?
Its first generator began operating in July 1984, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page