Ogdensburg
St. Lawrence County, New York · EIA plant ID 52058 · Operator: Ampersand Mount Ida Hydro LLC
Nameplate4MWSummer 1 MW
Generators5in service
Net generation4GWh12 mo to Dec 2025
Capacity factor50%hydro units, summer MW
Heat rate—thermal plants only
First online1987
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 | 10.4 | 47.5% | — |
| 2002 | 11.8 | 53.8% | — |
| 2003 | 11.7 | 43.8% | — |
| 2004 | 11.8 | 45.4% | — |
| 2005 | 10.6 | 115.2% | — |
| 2006 | 13.2 | 151.1% | — |
| 2007 | 10.1 | 114.7% | — |
| 2008 | 12.7 | 96.4% | — |
| 2009 | 11.8 | 90.0% | — |
| 2010 | 12.4 | 141.5% | — |
| 2011 | 13.7 | 104.0% | — |
| 2012 | 9.2 | 105.0% | — |
| 2013 | 9.3 | 106.0% | — |
| 2014 | 10 | 114.2% | — |
| 2015 | 7.5 | 86.0% | — |
| 2016 | 9.8 | 111.3% | — |
| 2017 | 13.9 | 158.4% | — |
| 2018 | 9.2 | 104.7% | — |
| 2019 | 8.6 | 98.3% | — |
| 2020 | 7.5 | 85.9% | — |
| 2021 | 7.9 | 89.9% | — |
| 2022 | 7.8 | 89.0% | — |
| 2023 | 4 | 46.0% | — |
| 2025 | 4.4 | 50.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 0.7 | 0.2 | Dec 1987 | Operating (Out of service, expected back within the year) | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.7 | 0.2 | Dec 1987 | Operating (Out of service, expected back within the year) | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 0.7 | 0.2 | Dec 1987 | Operating (Out of service, expected back within the year) | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 0.7 | 0.2 | Dec 1987 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 0.7 | 0.2 | Dec 1987 | Operating (Out of service, expected back within the year) | — | coming soon |
Owner / operator
Operator: Ampersand Mount Ida Hydro LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ampersand Mount Ida Hydro LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Pivot Solar NY 10 | 5 MW | 3.4 km |
| Ogdensburg Power | 27 MW | 4.3 km |
| Ogdensburg Solar Array | 1 MW | 5.1 km |
| Ruler Solar Partners (CSG) | 5 MW | 5.4 km |
| Royal Solar Partners (CSG) | 5 MW | 5.4 km |
| Eel Weir | 3 MW | 7.3 km |