Sissonville Hydro
St. Lawrence County, New York · EIA plant ID 10220 · Operator: Boralex Hydro Operations Inc
Nameplate3MWSummer 3 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor9%hydro units, summer MW
Heat rate—thermal plants only
First online1990
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 | 12.8 | 121.8% | — |
| 2002 | 14 | 131.2% | — |
| 2003 | 15.5 | 145.3% | — |
| 2004 | 15.3 | 142.8% | — |
| 2005 | 9.3 | 87.0% | — |
| 2006 | 16.5 | 154.1% | — |
| 2007 | 13 | 123.3% | — |
| 2008 | 16.3 | 154.6% | — |
| 2009 | 15.4 | 146.2% | — |
| 2010 | 15.5 | 147.1% | — |
| 2011 | 14.3 | 135.8% | — |
| 2012 | 1.5 | 14.2% | — |
| 2013 | 15.2 | 144.9% | — |
| 2014 | 14.5 | 55.3% | — |
| 2015 | 12.9 | 49.0% | — |
| 2016 | 11.3 | 42.8% | — |
| 2017 | 18.2 | 69.1% | — |
| 2018 | 13.8 | 52.4% | — |
| 2019 | 17 | 64.8% | — |
| 2020 | 9.3 | 35.4% | — |
| 2021 | 13.3 | 50.5% | — |
| 2022 | 15 | 57.0% | — |
| 2023 | 15.7 | 59.8% | — |
| 2024 | 15.7 | 59.7% | — |
| 2025 | 2.4 | 9.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HY1 | Conventional Hydroelectric | HY | 3 | 3 | Jul 1990 | Operating | — | coming soon |
Owner / operator
Operator: Boralex Hydro Operations Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sissonville Ltd Partnership | 98.0% | 3 MW |
| Sissonville II, LLC | 2.0% | 0 MW |
Nearby plants
Within 80 km.
| Hewittville Hydroelectric | 3 MW | 2.2 km |
| NY Potsdam 28 Hamilton St. Solar | 4 MW | 3.2 km |
| NY Lancaster Shisler Rd Site 2 Solar CSG | 5 MW | 3.2 km |
| Unionville Hydro Project 2499 NY | 3 MW | 3.3 km |
| Clarkson Solar | 2 MW | 4.5 km |
| Sugar Island | 4 MW | 5.3 km |