James A Fitzpatrick
Oswego County, New York · EIA plant ID 6110 · Operator: Exelon Nuclear
Nameplate883MWSummer 844 MW
Generators1in service
Net generation7,304GWh12 mo to Aug 2026
Capacity factor99%nuclear units, summer MW
Heat rate—thermal plants only
First online1976
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), nuclear 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 | 7,121 | 96.8% | — |
| 2002 | 6,585.5 | 89.5% | — |
| 2003 | 6,965.9 | 96.4% | — |
| 2004 | 6,455.9 | 87.1% | — |
| 2005 | 7,051.2 | 94.5% | — |
| 2006 | 6,758.3 | 90.5% | — |
| 2007 | 6,918.4 | 92.7% | — |
| 2008 | 6,690.9 | 89.1% | — |
| 2009 | 7,398.1 | 98.8% | — |
| 2010 | 6,361.5 | 85.0% | — |
| 2011 | 7,244 | 99.9% | — |
| 2012 | 6,070.5 | 81.5% | — |
| 2013 | 6,839.8 | 92.2% | — |
| 2014 | 5,828.7 | 78.1% | — |
| 2015 | 7,382.2 | 100.7% | — |
| 2016 | 5,874.1 | 78.4% | — |
| 2017 | 6,174.2 | 82.8% | — |
| 2018 | 6,527.8 | 87.9% | — |
| 2019 | 7,355.1 | 99.0% | — |
| 2020 | 6,588.7 | 88.4% | — |
| 2021 | 7,416.1 | 99.1% | — |
| 2022 | 6,612.7 | 90.8% | — |
| 2023 | 7,373.1 | 101.3% | — |
| 2024 | 6,789.7 | 90.6% | — |
| 2025 | 7,409.2 | 100.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Nuclear | ST | 883.3 | 844 | Aug 1976 | Operating | — | coming soon |
Owner / operator
Operator: Exelon Nuclear. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Exelon Nuclear | 100.0% | 883 MW |
Nearby plants
Within 80 km.
| Nine Mile Point Nuclear Station | 1,901 MW | 0.1 km |
| Sithe Independence Station | 1,158 MW | 4.5 km |
| SSC Oswego II LLC | 5 MW | 7.6 km |
| Oswego | 5 MW | 7.7 km |
| Summit - Scriba CSG | 5 MW | 8.2 km |
| Indeck Oswego Energy Center | 57 MW | 8.8 km |