Current Reactor Status
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 34 votes
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
94.1%
365-Day Avg
#49
of 94 plants
Min: 0%
Max: 100%
25 days <80%
Scram History 4 events since 2011
Performance Charts
Outage Duration Trend
?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)
?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
?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: 38.7 Yrs
Build Time: 11.6 Yrs
Lic. Remaining: 20.6 Yrs
Production & Power
Lifetime CF: 95%
Efficiency: 31.2%
Generated: 257.6 TWh
Reliability & Outages
Record Run: 547 Days
Refuelings: 18
Ownership & Construction
Technical Specs
Reactor Type:
PWR
Containment:
PWR-DRYAMB
NSS Supplier:
WEST 4LP
Thermal Power:
3645 MWt
Net Capacity:
1136 MWe
Efficiency:
31.2%
Status:
Operating
Licensing
Docket #:
05000455
License #:
NPF-66
License Type:
OL-FP
Const. Permit:
1975-12-31
Operating Lic:
1987-01-30
Commercial Op:
1987-08-02
License Renewed:
2015-11-19
License Exp:
2046-11-06
Facility Map
42.0744, -89.2824
Location & Contact
Per Diem Data
Breaker-to-Breaker Runs 11 runs
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.
545
Best Run (days)
2020-10-20 → 2022-04-18
532
Avg Run (days)
All Runs
| 2023-10-27 | 2025-04-14 | 535 days |
| 2022-05-12 | 2023-10-09 | 515 days |
| 2020-10-20 | 2022-04-18 | 545 days |
| 2019-04-25 | 2020-10-05 | 529 days |
| 2017-10-22 | 2019-04-08 | 533 days |
| 2014-10-24 | 2016-04-18 | 542 days |
| 2013-05-02 | 2014-09-29 | 515 days |
| 2008-10-25 | 2010-04-19 | 541 days |
| 2005-10-21 | 2007-04-02 | 528 days |
| 2004-04-10 | 2005-09-26 | 534 days |
| 2002-10-08 | 2004-03-23 | 532 days |