Oswego Harbor Power
Other power plant · Oswego County, New York
Nameplate capacity
1,804 MW
Rank in New York
#4
of 1,152 plants
In service since
1975
June 1975
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Oswego Harbor Power
- County
- Oswego County
- Generating units
- 2
- Share of state capacity
- 4.03%
- Rank among other plants in New York
- #1 of 99
- EIA plant code
- 2594
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST5 | Petroleum Liquids | 902 MW | 801 MW | 1975 | Operating |
| ST6 | Petroleum Liquids | 902 MW | 813 MW | 1979 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in New York
| Ravenswood | Natural gas | 2,096 MW |
| Nine Mile Point Nuclear Station | Nuclear | 1,901 MW |
| Northport | Natural gas | 1,564 MW |
| Astoria Generating Station | Natural gas | 1,345 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1,804 MW solar plant and a 1,804 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All New York power plants · What New York actually generates