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 36 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)
96%
Current
99.9%
365-Day Avg
#12
of 94 plants
Min: 90%
Max: 100%
0 days <80%
Scram History
No scram events recorded 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: 37.5 Yrs
Build Time: 12.8 Yrs
Lic. Remaining: 21.7 Yrs
Production & Power
Lifetime CF: 94.8%
Efficiency: 31.7%
Generated: 261.2 TWh
Reliability & Outages
Record Run: 549 Days
Refuelings: 18
Ownership & Construction
Technical Specs
Reactor Type:
PWR
Containment:
PWR-DRYAMB
NSS Supplier:
WEST 4LP
Thermal Power:
3645 MWt
Net Capacity:
1154 MWe
Efficiency:
31.7%
Status:
Operating
Licensing
Docket #:
05000457
License #:
NPF-77
License Type:
OL-FP
Const. Permit:
1975-12-31
Operating Lic:
1988-05-20
Commercial Op:
1988-10-17
License Renewed:
2016-01-27
License Exp:
2047-12-18
Facility Map
41.2434, -88.2297
Location & Contact
Breaker-to-Breaker Runs 10 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.
524
Active Streak (days)
Since 2024-10-26
548
Best Run (days)
2015-10-24 → 2017-04-24
524
Avg Run (days)
All Runs
| 2024-10-26 | Active | 524 days |
| 2023-05-14 | 2024-10-07 | 512 days |
| 2021-11-06 | 2023-04-24 | 534 days |
| 2020-05-07 | 2021-10-18 | 529 days |
| 2018-11-02 | 2020-04-20 | 535 days |
| 2017-05-21 | 2018-10-08 | 505 days |
| 2015-10-24 | 2017-04-24 | 548 days |
| 2014-05-23 | 2015-10-05 | 500 days |
| 2011-05-13 | 2012-10-15 | 521 days |
| 2005-05-05 | 2006-10-16 | 529 days |