Oswego Harbor Power
Oil power plant in Oswego County, New York. 1,803.6 MW of nameplate capacity across 2 generators, operated by Oswego Harbor Power.
Also known as EIA plant 2594
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Key facts
- Capacity
- 1,803.6 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 1975First generator online
- Operator
- Oswego Harbor PowerEIA operator ID 64701
- Grid
- NYISOBalancing authority NYIS
- Price nodes
- 2 NYISO nodesResource nodes with prices
- Location
- Oswego County, NY43.4586, −76.5319
- EIA plant ID
- 2594EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Oswego Harbor Power produces
Free · EIA-923Net generation, 2025
34.3 GWh
34,281 MWh, final. 8 of 12 months reported
Capacity factor, 2025
0.3%
2024: 0.3%
January to July 2026
117 GWh
Provisional
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 305,811 | Not reported | 12 of 12 |
| 2001 | 465,528 | Not reported | 12 of 12 |
| 2002 | 179,245 | Not reported | 5 of 12 |
| 2003 | 389,835 | Not reported | 12 of 12 |
| 2004 | 406,677 | Not reported | 12 of 12 |
| 2005 | 1,021,352 | Not reported | 12 of 12 |
| 2006 | 126,361 | Not reported | 12 of 12 |
| 2007 | 247,659 | Not reported | 12 of 12 |
| 2008 | 91,898 | Not reported | 12 of 12 |
| 2009 | 74,620 | Not reported | 12 of 12 |
| 2010 | 64,710 | 0.4% | 12 of 12 |
| 2011 | 68,246 | 0.4% | 12 of 12 |
| 2012 | 63,371 | 0.4% | 12 of 12 |
| 2013 | 61,841 | 0.6% | 8 of 12 |
| 2014 | 0 | 0.0% | 5 of 12 |
| 2015 | 0 | 0.0% | 4 of 12 |
| 2016 | 9,144 | 0.1% | 7 of 12 |
| 2017 | 0 | 0.0% | 5 of 12 |
| 2018 | −7,560 | -0.1% | 7 of 12 |
| 2019 | −9,180 | -0.1% | 6 of 12 |
| 2020 | −10,620 | -0.2% | 5 of 12 |
| 2021 | −14,220 | -0.2% | 7 of 12 |
| 2022 | 6,207 | 0.1% | 4 of 12 |
| 2023 | 19,585 | 0.2% | 7 of 12 |
| 2024 | 44,307 | 0.3% | 12 of 12 |
| 2025 | 34,281 | 0.3% | 8 of 12 |
| 2026 (provisional, partial year) | 117,417 | 1.3% | 7 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 account · NYISOEmissions
Free · EPA CAMPDCO₂, 2025
103,129
US short tons. 2024: 53,115
SO₂, 2025
309
US short tons
NOx, 2025
111
US short tons
2 of 2 EPA units reported CO₂ in 2025 (5, 6), matched to EIA plant 2594 through the EPA–EIA crosswalk.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
8,025
million gallons
Consumption, 2024
Not reported
million gallons
Source
Lake Ontario
Surface, Fresh. Once-through
14 of 24 cooling months report withdrawal. Great Lakes intake; a shoreline HUC12 does not describe the lake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| ST5 | Petroleum Liquids | 901.8 | June 1975 |
| ST6 | Petroleum Liquids | 901.8 | December 1979 |
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 Oswego Harbor Power as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Oswego Harbor Power
How much power does Oswego Harbor Power produce?
Oswego Harbor Power reported 34,281 MWh (34.3 GWh) of net generation in 2025, a 0.3% capacity factor on 1,803.6 MW of nameplate capacity. From January to July 2026 it reported 117 GWh, which is provisional. 8 of 12 months were reported for 2025.
Where is Oswego Harbor Power?
Oswego Harbor Power is in Oswego County, New York, at 43.4586, −76.5319. It is in the New York Independent System Operator balancing area (NYIS).
Who operates Oswego Harbor Power?
EIA-860M for August 2026 lists Oswego Harbor Power as the operator (EIA operator ID 64701). The operator is not always the owner.
When did Oswego Harbor Power start operating?
Its first generator began operating in June 1975, according to EIA-860M.
Does InfraMap have power prices for Oswego Harbor Power?
Yes. InfraMap has NYISO day-ahead and real-time prices at 2 price nodes linked to Oswego Harbor Power, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- NYISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page