1901.1 MW Nuclear operating in Oswego, NY — New York Independent System Operator
1,901.1 MW
Nameplate Capacity
2
Generators
units
Nuclear
Technology
1969
Operating Since
Coordinates
43.5211, -76.4100
County
Oswego, NY
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Constellation Nuclear | Exelon Generation | Exelon |
| Owner(s) | Constellation Nuclear, Long Island Power Authority | Constellation Energy | — |
| Status | Operating | operating | — |
Nine Mile Point Nuclear Station is a nuclear power plant with two nuclear reactors located in the town of Scriba, approximately five miles northeast of Oswego, New York, on the shore of Lake Ontario. The 900-acre (360 ha) site is also occupied by the James A. FitzPatrick Nuclear Power Plant.
Read more on WikipediaNine Mile Point Nuclear Station is a 1901.1 MW nuclear power plant located in Oswego County, New York. The plant, which began operating in 1969, is owned by Constellation Energy and operated by Constellation Nuclear. It consists of two nuclear reactors and is the largest nuclear power plant in New York State, ranking 26th nationally among 55 nuclear facilities. The plant is located within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
In the most recent year with available data, Nine Mile Point generated 15,963,576 MWh of electricity, achieving a capacity factor of 95.8%. The plant has two generators utilizing nuclear technology. As one of only three nuclear plants in New York, Nine Mile Point plays a significant role in the state's energy mix.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
New York Independent System Operator
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
1.4M MWh
Latest Month
16.0M MWh
Annual Generation
95.8%
Capacity Factor
No financial data available for this plant.
Point of Interconnection
Nearest Substation
NINE_MILE_1
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
—
Pricing Hub
NYISO Zone C
Node Source
Shared substation inference
Substation identified. Node ID not yet resolved against ISO roster.
Nine Mile Point Nuclear Station Unit 2 Offline
OSWEGO, N.Y. –Exelon Generation's Nine Mile Point Nuclear Station Unit 2 automatically shut down at 12:33 a.m. today after the main generator came offline.
Constellation to Sell 4.4 GW of PJM Gas Power Assets to LS Power for $5B in Regulatory Divestiture
Competitive generation giant Constellation Energy has agreed to sell approximately 4.4 GW of natural gas–fired generation capacity in PJM Interconnection to LS Power Equity Advisors for $5 billion, marking the largest single tranche of divestitures required to resolve antitrust and market-power c...
Constellation to sell 4.4GW of PJM assets to LS Power for $5B as part of Calpine acquisition
Constellation Energy Corporation will sell a portfolio of generation assets in PJM to LS Power for $5 billion, fulfilling DOJ requirements from its Calpine acquisition.
New York extends billions in subsidies for nuclear plants in Upstate NY
For the first seven years, the subsidies will add nearly $4 a month to the average household utility bill, NY regulators estimate.
Last updated 2026-03-14
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