# Nine Mile Point Nuclear Station

NYISO asset profile · https://askthegrid.com/assets/facilities/nine-mile-point-nuclear-station

Constellation Energy - Oswego County - NYISO

Two-unit nuclear generating station located at 348 Lake Road in Oswego, New York, on the shores of Lake Ontario. Unit 1 (613 MW, GE BWR-2) entered commercial operation on December 1, 1969. Unit 2 (1,277 MW, GE BWR-5) entered commercial operation on March 11, 1988. Constellation Energy owns Unit 1 (100%) and 82% of Unit 2; Long Island Power Authority owns the remaining 18% of Unit 2. Constellation operates the plant. The facility interconnects to the New York State Transmission System at the Scriba Substation at 345 kV. Unit 1 is currently licensed through August 22, 2029 and has a pending subsequent license renewal application; Unit 2 is licensed through 2046.

## Metrics

- **Nameplate capacity:** 1,901.1 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 2589 — plant-2589

## Facts

- **Technology:** Nuclear
- **Operator:** Constellation Energy

## Related parties

- **Owner / operator:** Constellation Energy — Owner and operator ([source](https://www.constellationenergy.com/about/locations/nine-mile-point-clean-energy-center.html))
- **Owner:** Long Island Power Authority — Co-owner of Unit 2
- **Former owner:** Niagara Mohawk Power Corporation — Former owner (41% of Unit 2)
- **Former owner:** New York State Electric & Gas Corporation — Former co-owner (18% of Unit 2)
- **Former owner:** Rochester Gas & Electric Corporation — Former co-owner (14% of Unit 2)
- **Former owner:** Central Hudson Gas & Electric Corporation — Former co-owner (9% of Unit 2)
- **Operator:** Exelon Generation Company, LLC — Operator of Unit 2
- **Regulator:** U.S. Nuclear Regulatory Commission — Licensing and regulatory authority ([source](https://www.nrc.gov/))
- **Balancing authority / market operator:** New York Independent System Operator, Inc. — Market operator and balancing authority ([source](https://www.nyiso.com/))
- **Transmission owner:** Niagara Mohawk Power Corporation d/b/a National Grid — Connecting transmission owner
- **Transmission owner:** New York State Electric & Gas Corporation — Connecting transmission owner
- **Equipment supplier:** General Electric — Equipment manufacturer ([source](https://www.gevernova.com/))

## Sources

- [en.wikipedia.org](https://en.wikipedia.org/wiki/Nine_Mile_Point_Nuclear_Generating_Station) — en.wikipedia.org · public_source — Source retained for exact-record publication review.
- [nyisoviewer.etariff.biz](https://nyisoviewer.etariff.biz/viewerdoclibrary/Filing/Filing199/199FilingSections/Public%20exctd%20NMP%20LGIA%20FID199%20sprt%20sgs_5419.pdf) — nyisoviewer.etariff.biz · public_source — Source retained for exact-record publication review.
- [constellationenergy.com](https://www.constellationenergy.com/about/locations/nine-mile-point-clean-energy-center.html) — constellationenergy.com · public_source — Source retained for exact-record publication review.
- [constellationenergy.com](https://www.constellationenergy.com/content/dam/constellationenergy/pdfs/fact-sheets/Nine_Mile_Point_Clean_Energy_Center_Fact_Sheet.pdf) — constellationenergy.com · public_source — Source retained for exact-record publication review.
- [federalregister.gov](https://www.federalregister.gov/documents/2001/06/29/01-16387/in-the-matter-of-niagara-mohawk-power-corporation-et-al-nine-mile-point-nuclear-station-unit-nos-1) — federalregister.gov · authoritative — Source retained for exact-record publication review.
- [federalregister.gov](https://www.federalregister.gov/documents/2011/11/29/2011-30733/nine-mile-point-nuclear-station-llc-nine-mile-point-nuclear-station-unit-no-2-environmental) — federalregister.gov · authoritative — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/nine-mile-point-nuclear-station
Website: [Constellation Energy](https://www.constellationenergy.com/about/locations/nine-mile-point-clean-energy-center.html)

Source: Ask the Grid — https://askthegrid.com/