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Cooper - Plant Information & Status

Detailed technical specifications, licensing info, and upcoming refueling outage schedules for the Cooper nuclear power facility.

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Cooper Lifecycle: Commissioned Reactor: ONLINE

Nebraska Public Power District · Cooper
Bowl E Oke - 2008
Bowl E Oke - 2008

Contact Information

Address: 1200 Prospect Road
Brownville, NE 68321
Phone: (402) 825-3811

Technical Specifications

Reactor Type: BWR ( BWR-MARK 1)
Net Output: 770 MWe
Thermal Power: 2419 MWt
Efficiency: 31.83%

Licensing & Regulatory Details

Docket #: 05000298
License #: DPR-46 ( OL-FP)
Construction Permit: 1968-06-04
Operating License: 1974-01-18
License Renewed: 2010-11-29
Commercial Ops: 1974-07-01
Expiration Date: 2034-01-18

Site History & Construction

NSS Supplier: GE 4
Constructor: B&R
Architect Engineer: B&R

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%

Upcoming Outage

Start Date Duration
2026-09-21 50 Days

Facility Statistics

Lifecycle & Tenure
Op. Age: 51.7 Yrs
Build Time: 6.1 Yrs
Lic. Remain: 7.8 Yrs
Production & Power
Lifetime CF: 89.4%
Efficiency: 31.8%
Generated: 164.1 TWh
Reliability & Outages
Record Run: 706 Days
Refuelings (Since '99): 15
Prediction Acc: 67%