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Monticello - Plant Information & Status

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

Current Reactor Status

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Current power output from NRC daily reactor status reports. Shows the most recent power level as a percentage of rated capacity, along with a 14-day power history.

Ratings 31 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)

12%
Current
72.3%
365-Day Avg
#92
of 94 plants
Min: 0% Max: 100% 106 days <80%

Scram History 8 events since 2011

8
Total
7
Automatic
1
Manual
2.6
Avg Recovery (days)
Recent Events
2025-07-27 Manual MANUAL REACTOR SCRAM The following information was provided ...
2025-03-18 Auto AUTOMATIC REACTOR SCRAM The following information was provid...
2024-02-27 Auto AUTOMATIC REACTOR SCRAM The following information was provid...
2023-09-26 Auto EN Revision Imported Date: 9/28/2023 EN Revision Text: ACTUA...
2015-11-22 Auto REACTOR SCRAM DUE TO A REACTOR RECIRCULATION PUMP LOCKOUT "A...
2012-09-24 Auto AUTOMATIC REACTOR SCRAM DURING MAINTENANCE ON 4160V BUS 12 A...
2011-11-18 Auto AUTOMATIC REACTOR SCRAM WHILE PERFORMING TURBINE BYPASS VALV...
2011-10-20 Auto AUTOMATIC REACTOR SCRAM DUE TO LOCKOUT OF AUXILIARY POWER TR...

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: 54.8 Yrs
Build Time: 4 Yrs
Lic. Remaining: 24.4 Yrs
Production & Power
Lifetime CF: 87.8%
Efficiency: 30.8%
Generated: 129.4 TWh
Reliability & Outages
Record Run: 707 Days
Refuelings: 14

Ownership & Construction

Owner/Operator: Xcel Energy
Architect Engineer: BECH
Constructor: BECH

Technical Specs

Reactor Type: BWR
Containment: BWR-MARK 1
NSS Supplier: GE 3
Thermal Power: 2004 MWt
Net Capacity: 617 MWe
Efficiency: 30.8%
Status: Operating

Licensing

Docket #: 05000263
License #: DPR-22
License Type: OL-FP
Const. Permit: 1967-06-19
Operating Lic: 1970-09-08
Commercial Op: 1971-06-30
License Renewed: 2006-11-08
License Exp: 2050-09-08

Facility Map

45.3334, -93.8468

Location & Contact

Address:
2807 West Highway 75
Monticello, MN 55362, USA
Get Directions
Phone: (763) 295-5151

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.
705
Best Run (days)
2019-05-14 → 2021-04-18
609
Avg Run (days)
All Runs
2019-05-14 2021-04-18 705 days
2017-05-15 2019-04-14 699 days
2015-12-01 2017-04-15 501 days
2007-04-29 2008-09-12 502 days
2005-04-14 2007-01-11 637 days