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Nine Mile Point 1 - Plant Information & Status

Detailed technical specifications, licensing info, and upcoming refueling outage schedules for the Nine Mile Point 1 nuclear power facility.

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Nine Mile Point 1 Lifecycle: Commissioned Reactor: ONLINE

Constellation Energy Corporation · Nine Mile Point
Nine Mile Point
Nine Mile Point

Contact Information

Address: 348 Lake Road
Scriba, NY 13126
Phone: (301) 415-8200

Technical Specifications

Reactor Type: BWR ( BWR-MARK 1)
Net Output: 621 MWe
Thermal Power: 1850 MWt
Efficiency: 33.57%

Licensing & Regulatory Details

Docket #: 05000220
License #: DPR-63 ( OL-FP)
Construction Permit: 1965-04-12
Operating License: 1974-12-26
License Renewed: 2006-10-31
Commercial Ops: 1969-12-01
Expiration Date: 2029-08-22

Site History & Construction

NSS Supplier: GE 2
Constructor: S&W
Architect Engineer: NIAG

Current Reactor Status (NRC Data)

100%
ONLINE
Report Date:
March 20, 2026
Lifecycle: Commissioned | Reactor: ONLINE
Recent Power History
Date Power Level Visual
Mar 20 100%
Mar 19 100%
Mar 18 100%
Mar 17 100%
Mar 16 100%
Mar 13 100%
Mar 12 100%
Mar 11 100%
Mar 10 100%
Mar 9 100%
Mar 6 100%
Mar 5 100%
Mar 4 100%
Mar 3 100%

Facility Statistics

Lifecycle & Tenure
Op. Age: 56.3 Yrs
Build Time: 4.6 Yrs
Lic. Remain: 3.4 Yrs
Production & Power
Lifetime CF: 91.5%
Efficiency: 33.6%
Generated: 135.4 TWh
Reliability & Outages
Record Run: 728 Days
Refuelings (Since '99): 14
Prediction Acc: 67%