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
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Capacity Factor (365-Day)
100%
Current
84.6%
365-Day Avg
#70
of 94 plants
Min: 0%
Max: 100%
59 days <80%
Scram History 9 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: 40 Yrs
Build Time: 11.7 Yrs
Lic. Remaining: 19.6 Yrs
Production & Power
Lifetime CF: 90.1%
Efficiency: 33.4%
Generated: 262.3 TWh
Reliability & Outages
Record Run: 547 Days
Refuelings: 17
Ownership & Construction
Technical Specs
Reactor Type:
PWR
Containment:
PWR-DRYSUB
NSS Supplier:
WEST 4LP
Thermal Power:
3650 MWt
Net Capacity:
1220 MWe
Efficiency:
33.4%
Status:
Operating
Licensing
Docket #:
05000423
License #:
NPF-49
License Type:
OL-FP
Const. Permit:
1974-08-09
Operating Lic:
1986-01-31
Commercial Op:
1986-04-23
License Renewed:
2005-11-28
License Exp:
2045-11-25
Facility Map
41.311, -72.1668
Location & Contact
Breaker-to-Breaker Runs 6 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.
584
Best Run (days)
1999-06-30 → 2001-02-03
519
Avg Run (days)
All Runs
| 2017-11-15 | 2019-04-12 | 513 days |
| 2016-06-24 | 2017-10-13 | 476 days |
| 2011-11-23 | 2013-04-14 | 508 days |
| 2007-05-20 | 2008-10-12 | 511 days |
| 2001-04-01 | 2002-09-07 | 524 days |
| 1999-06-30 | 2001-02-03 | 584 days |