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Diablo Canyon 1 - Plant Information & Status

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

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Diablo Canyon 1 Lifecycle: Commissioned Reactor: ONLINE

Pacific Gas & Electric Company · Diablo Canyon
PCG
Jobs ( CA)
Forum
Books
Shell Beach party ~1988
Shell Beach party ~1988

Contact Information

Address: Off Highway 101 9 MI NW of Avila Beach CA
Avila Beach, CA 93424
Phone: (805) 545-6000
Website: http://www.pge.com/

Technical Specifications

Reactor Type: PWR ( PWR-DRYAMB)
Net Output: 1122 MWe
Thermal Power: 3411 MWt
Efficiency: 32.89%

Licensing & Regulatory Details

Docket #: 05000275
License #: DPR-80 ( OL-FP)
Construction Permit: 1968-04-23
Operating License: 1984-11-02
Commercial Ops: 1985-05-07
Expiration Date: 2024-11-02

Site History & Construction

NSS Supplier: WEST 4LP
Constructor: PG&E
Architect Engineer: PG&E

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
2026-10-12 35 Days

Facility Statistics

Lifecycle & Tenure
Op. Age: 40.9 Yrs
Build Time: 17 Yrs
Lic. Remain: 0 Yrs
Production & Power
Lifetime CF: 90.1%
Efficiency: 32.9%
Generated: 240.8 TWh
Reliability & Outages
Record Run: 707 Days
Refuelings (Since '99): 17
Prediction Acc: 33%