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Summer - Status & History

Comprehensive reactor performance metrics, cycle analysis, and historical outage data.

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Duration of each outage in days, shown chronologically. Green bars are scheduled refueling outages, red bars are forced/unscheduled. The orange dashed line marks the average duration. Extended outages (>180 days) and D&D periods are excluded.

Outage Duration Trend

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Days between consecutive scheduled refueling outage starts, showing operating cycle regularity. The purple dashed line marks the average cycle length. Most U.S. reactors operate on 18-month (547 day) or 24-month (730 day) cycles.

Cycle Length History

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Monthly capacity factor with outage events overlaid as red bands. Green bars show average power level per month. Toggle to Daily view for raw daily data.

Power History

Scheduled
2026-02-28 In Outage 35+ 21d 2026-02-27 +1d
Scram # 58141
2026-01-31 2026-02-07 8 99d - -
Scram # 57987
2025-10-15 2025-10-24 10 7d - -
Unscheduled
2025-10-04 2025-10-08 5 235d - -
Scram # 57540
2025-02-11 2025-02-11 1 78d - -
Unscheduled
2024-11-20 2024-11-25 6 20d - -
Scheduled
2024-09-21 2024-10-31 41 492d 2024-09-20 +1d
Scheduled
2023-04-06 2023-05-18 43 482d 2023-04-07 -1d
Scram # 55580
2021-11-16 2021-12-10 25 3d - -
Unscheduled
2021-11-04 2021-11-13 10 2d - -
Scheduled
2021-10-09 2021-11-02 25 148d 2021-10-21 -12d
Unscheduled
2021-05-13 2021-05-14 2 246d - -
Unscheduled
2020-09-08 2020-09-09 2 121d - -
Scheduled
2020-04-11 2020-05-10 30 134d 2020-04-11 0d
Unscheduled
2019-11-29 2019-11-29 1 10d - -
Unscheduled
2019-11-08 2019-11-19 12 349d - -
Scheduled
2018-10-06 2018-11-24 50 330d 2018-10-05 +1d
Scram # 53060
2017-11-08 2017-11-10 3 62d - -
Scram # 52932
2017-08-29 2017-09-07 10 59d - -
Scram # 52833
2017-06-30 2017-07-01 2 29d - -
Scheduled
2017-04-08 2017-06-01 55 494d 2017-04-07 +1d
Scheduled
2015-10-03 2015-12-01 60 438d 2015-10-03 0d
Unscheduled
2014-07-14 2014-07-22 9 45d - -
Scheduled
2014-04-05 2014-05-30 56 369d 2014-04-04 +1d
Unscheduled
2013-03-23 2013-04-01 10 107d - -
Scheduled
2012-10-13 2012-12-06 55 503d 2012-10-12 +1d
Scheduled
2011-04-16 2011-05-29 44 87d 2011-04-16 0d
Unscheduled
2011-01-18 2011-01-19 2 115d - -
Unscheduled
2010-09-23 2010-09-25 3 280d - -
Unscheduled
2009-12-17 2009-12-17 1 8d - -
Scheduled
2009-10-17 2009-12-09 54 7d 2009-10-16 +1d
Unscheduled
2009-10-03 2009-10-10 8 477d - -
Scheduled
2008-04-26 2008-06-13 49 86d 2008-04-25 +1d
Unscheduled
2008-01-25 2008-01-31 7 353d - -
Unscheduled
2007-02-05 2007-02-06 2 76d - -
Scheduled
2006-10-14 2006-11-21 39 413d 2006-10-13 +1d
Unscheduled
2005-08-26 2005-08-27 2 86d - -
Scheduled
2005-04-24 2005-06-01 39 378d 2005-04-23 +1d
Unscheduled
2004-03-31 2004-04-11 12 129d - -
Scheduled
2003-10-11 2003-11-23 44 150d 2003-10-11 0d
Unscheduled
2003-05-12 2003-05-14 3 328d - -
Unscheduled
2002-06-18 2002-06-18 1 16d - -
Scheduled
2002-04-20 2002-06-02 44 319d 2002-04-20 0d
Unscheduled
2001-06-04 2001-06-05 2 95d - -
Scheduled
2000-10-08 2001-03-01 145 491d 2000-10-08 0d
Unscheduled
1999-06-05 1999-06-05 1 18d - -
Unscheduled
1999-05-18 1999-05-18 1 8d - -
Scheduled
1999-04-04 1999-05-10 37 - 1999-04-04 0d
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