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North Anna 1 - 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

Scram # 57997
2025-10-22 2025-10-24 3 4d - -
Scheduled
2025-09-07 2025-10-18 42 464d 2025-09-01 +6d
Scram # 57148
2024-05-30 2024-05-31 2 54d - -
Scheduled
2024-03-03 2024-04-06 35 159d 2024-03-02 +1d
Unscheduled
2023-09-25 2023-09-26 2 334d - -
Scheduled
2022-09-21 2022-10-26 36 158d 2022-09-11 +10d
Scram # 55843
2022-04-15 2022-04-16 2 208d - -
Unscheduled
2021-09-12 2021-09-19 8 118d - -
Scram # 55239
2021-05-07 2021-05-17 11 15d - -
Scheduled
2021-03-14 2021-04-22 40 531d 2021-03-06 +8d
Scheduled
2019-09-08 2019-09-30 23 511d 2019-09-02 +6d
Scheduled
2018-03-11 2018-04-15 36 512d 2018-03-11 0d
Scheduled
2016-09-11 2016-10-15 35 526d 2016-09-11 0d
Scram # 50946
2015-04-02 2015-04-04 3 5d - -
Scheduled
2015-03-08 2015-03-28 21 8d 2015-03-08 0d
Scram # 50851
2015-02-27 2015-02-28 2 57d - -
Unscheduled
2014-12-23 2015-01-01 10 436d - -
Scram # 49429
2013-10-12 2013-10-13 2 2d - -
Scheduled
2013-09-08 2013-10-10 33 496d 2013-09-08 0d
Scheduled
2012-03-11 2012-04-30 51 119d 2012-03-11 0d
Scram # 47181
2011-08-24 2011-11-13 82 307d - -
Scram # 47181
2011-08-24 2011-11-13 82 81d - -
Scheduled
2010-09-12 2010-10-21 40 56d 2010-09-12 0d
Unscheduled
2010-07-15 2010-07-18 4 259d - -
Unscheduled
2009-10-24 2009-10-29 6 205d - -
Scheduled
2009-03-08 2009-04-02 26 511d 2009-03-08 0d
Scheduled
2007-09-09 2007-10-14 36 248d 2007-09-09 0d
Unscheduled
2007-01-04 2007-01-04 1 49d - -
Unscheduled
2006-11-13 2006-11-16 4 218d - -
Scheduled
2006-03-12 2006-04-09 29 24d 2006-03-11 +1d
Unscheduled
2006-02-14 2006-02-16 3 496d - -
Scheduled
2004-09-12 2004-10-06 25 199d 2004-09-12 0d
Unscheduled
2004-02-21 2004-02-26 6 246d - -
Unscheduled
2003-06-12 2003-06-20 9 53d - -
Unscheduled
2003-04-20 2003-04-20 1 2d - -
Scheduled
2003-02-23 2003-04-18 55 502d 2003-02-23 0d
Scheduled
2001-09-09 2001-10-09 31 488d 2001-09-09 0d
Unscheduled
2000-05-08 2000-05-09 2 31d - -
Scheduled
2000-03-12 2000-04-07 27 - 2000-03-12 0d
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