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Columbia Generating Station - Plant Information & Status

Technical specifications, contact data, ratings, and licensing history for the Columbia facility.

Ratings 43 votes

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Community ratings from NukeWorker members. Vote to share your experience working at this facility. Results show the breakdown of Above Average, Average, and Below Average ratings.

Capacity Factor (365-Day)

100%
Current
77.1%
365-Day Avg
#90
of 94 plants
Min: 0% Max: 100% 86 days <80%

Scram History 5 events since 2011

5
Total
2
Automatic
3
Manual
1
Avg Recovery (days)
Recent Events
2026-02-11 Manual MANUAL REACTOR TRIP DUE TO A LOSS OF BOTH REACTOR RECIRCULAT...
2018-05-17 Auto AUTOMATIC REACTOR SCRAM CAUSED BY MAIN TRANSFORMER TRIP"At 0...
2017-08-19 Manual MANUAL REACTOR SCRAM DUE TO A RISE IN MAIN CONDENSER BACK PR...
2016-12-17 Auto AUTOMATIC SCRAM DUE TO LOAD REJECT FROM SUBSTATION "On Decem...
2016-03-27 Manual MANUAL SCRAM FOLLOWING LOSS OF REACTOR CLOSED COOLING "At 13...

Performance Charts

Outage Duration Trend

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Scheduled refueling outage durations over time. Green bars are below average, yellow near average, red above. Dashed line shows the plant's historical average. Shorter outages mean better execution.

Power History (12-Month)

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Daily power output as a percentage of rated capacity over the past 365 days. Green segments indicate full power (90%+), yellow shows reduced output, and red indicates significant power reductions or shutdowns.

Outage Timeline

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Visual timeline of all recorded outages. Blue bars are scheduled refueling outages, red bars are forced/unplanned outages. Width represents outage duration. Hover for details.

Facility Statistics

Lifecycle & Tenure
Operating Age: 41.3 Yrs
Build Time: 11.7 Yrs
Lic. Remaining: 17.7 Yrs
Production & Power
Lifetime CF: 86.2%
Efficiency: 32.8%
Generated: 239.2 TWh
Reliability & Outages
Record Run: 703 Days
Refuelings: 14

Ownership & Construction

Owner/Operator: Energy Northwest
Architect Engineer: B&R
Constructor: BECH

Technical Specs

Reactor Type: BWR
Containment: BWR-MARK 2
NSS Supplier: GE 5
Thermal Power: 3544 MWt
Net Capacity: 1163 MWe
Efficiency: 32.8%
Status: Operating

Licensing

Docket #: 05000397
License #: NPF-21
License Type: OL-FP
Const. Permit: 1973-03-19
Operating Lic: 1984-04-13
Commercial Op: 1984-12-13
License Renewed: 2012-05-22
License Exp: 2043-12-20

Facility Map

46.4707, -119.332

Location & Contact

Address:
North Power Plant Loop Road
Richland, WA 99352, USA
Get Directions
Phone: (509) 372-5000

Breaker-to-Breaker Runs 5 runs

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Breaker-to-breaker runs measure continuous operation between refueling outages (470+ days). An active streak means the unit has been running continuously since the last refueling. Longer runs indicate better reliability.
687
Best Run (days)
2019-06-22 → 2021-05-09
609
Avg Run (days)
All Runs
2023-06-20 2025-04-12 662 days
2021-12-14 2023-05-06 508 days
2019-06-22 2021-05-09 687 days
2013-06-26 2015-05-10 683 days
2009-11-13 2011-04-03 506 days