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Watts Bar 1 - Plant Information & Status

Detailed technical specifications, licensing info, and upcoming refueling outage schedules for the Watts Bar 1 nuclear power facility.

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Watts Bar 1 Lifecycle: Commissioned Reactor: ONLINE

Tennessee Valley Authority · Watts Bar
Watts Bat SGRP
Watts Bat SGRP

Contact Information

Address: 1260 Nuclear Plant Road
Spring City, TN 37381
Phone: (423) 365-8100

Technical Specifications

Reactor Type: PWR ( PWR-ICECND)
Net Output: 1123 MWe
Thermal Power: 3459 MWt
Efficiency: 32.47%

Licensing & Regulatory Details

Docket #: 05000390
License #: NPF-90 ( OL)
Construction Permit: 1973-01-23
Operating License: 1996-02-07
Commercial Ops: 1996-05-27
Expiration Date: 2035-11-09

Site History & Construction

NSS Supplier: WEST 4LP
Constructor: TVA
Architect Engineer: TVA

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
2026-04-17 29 Days

Facility Statistics

Lifecycle & Tenure
Op. Age: 29.8 Yrs
Build Time: 23.3 Yrs
Lic. Remain: 9.6 Yrs
Production & Power
Lifetime CF: 88.4%
Efficiency: 32.5%
Generated: 236.6 TWh
Reliability & Outages
Record Run: 1,100 Days
Refuelings (Since '99): 17
Prediction Acc: 67%