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South Texas 2 - Plant Information & Status

Technical specifications, contact data, ratings, and licensing history for the South Texas Project (STP) facility.

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Current Reactor Status

Capacity Factor (365-Day)

100%
Current
89.5%
365-Day Avg
#22
of 94 plants
Min: 0% Max: 100% 39 days <80%

Ratings

South Texas Project
Above Average
19 (47%)
Average
7 (17%)
Below Average
14 (35%)
Total Members Voted: 15

Facility Statistics

Lifecycle & Tenure
Operating Age: 36.8 Yrs
Build Time: 13.5 Yrs
Lic. Remaining: 22.7 Yrs
Production & Power
Lifetime CF: 88.9%
Efficiency: 33.2%
Generated: 271.7 TWh
Reliability & Outages
Record Run: 549 Days
Refuelings: 19

Scram History 5 events since 2011

5
Total
4
Automatic
1
Manual
4.3
Avg Recovery (days)
Recent Events
2025-11-20 Auto AUTOMATIC REACTOR TRIP The following information was provide...
2024-05-11 Auto EN Revision Imported Date: 5/23/2024 EN Revision Text: AUTOM...
2013-01-07 Auto UNUSUAL EVENT DECLARED DUE TO MAIN TRANSFORMER FIRE "Fire in...
2013-01-03 Manual UNIT 2 MANUALLY TRIPPED AFTER TWO SHUTDOWN CONTROL RODS UNEX...
2011-11-28 Auto AUTOMATIC REACTOR TRIP DUE TO TURBINE TRIP ON GENERATOR LOCK...

Ownership & Construction

Owner/Operator: STP Nuclear Operating
Architect Engineer: BECH
Constructor: EBSO

Technical Specs

Reactor Type: PWR
Containment: PWR-DRYAMB
NSS Supplier: WEST 4LP
Thermal Power: 3853 MWt
Net Capacity: 1280 MWe
Efficiency: 33.2%
Status: Operating

Licensing

Docket #: 05000499
License #: NPF-80
License Type: OL-FP
Const. Permit: 1975-12-22
Operating Lic: 1989-03-28
Commercial Op: 1989-06-19
License Renewed: 2017-09-28
License Exp: 2048-12-15

Facility Map

28.7961, -96.0562

Location & Contact

Address:
8 miles west of Wadsworth on Farm Road 521
Palacious, TX 77465, USA
Get Directions
Phone: (512) 972-3611

Per Diem Data

Photos