North Anna 2 - Status & History

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

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Reactor Status Timeline

Forced Outage · Day 1 NRC data, Mon to Fri ? Actual daily reactor status from NRC reports (Mon to Fri) and the current state. What is coming -- the utility's published Scheduled outage and NukeWorker's model Projection -- is part of a subscription. Colored by status. How far ahead you can see depends on your plan.
Oct2025NovDecJan2026FebMarAprMayJunJulAugSepOctOnline: Sep 18, 2025 to Aug 18, 2026Coastdown: Aug 19, 2026 to Sep 5, 2026Refueling Outage (2R31): Sep 6, 2026 to Sep 17, 2026Forced Outage: Sep 18, 2026Today
OnlineCoastdownRefueling OutageForced Outage
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Composite Operational Excellence Score (0-100) — average percentile rank across 7 dimensions in three sub-scores: Reliability (capacity factor, forced outage days, B2B avg streak), Efficiency (fuel utilization, refuel duration), and Discipline (startup duration, scram count). 5-year window. Higher = more operationally excellent. Click to see the full breakdown.
   
Excellence
ranked of 93
Subscribers
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Days of continuous operation since the last outage ended. Has forced outage(s) since last refueling.
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Current Run
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Longest recorded period of continuous operation between outages (2025-04-05 to 2026-09-06).
519
Record Run
days
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Breaker-to-Breaker runs — continuous operation exceeding the cycle-adjusted threshold set for this unit with no trips to 0% power.
3
B2B Runs
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Lifetime capacity factor: average power level across all recorded days (100% = always at full power).
89.2%
Capacity Factor
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Net electricity actually generated over the most recent 12 months reported by the U.S. EIA (Form EIA-923), summed across every unit at this plant. Authoritative actuals, not an estimate.
15.85 TWh
Net Generation
EIA-923 · 12 mo to 2026-06 · plant total
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Total number of scheduled refueling outages detected in the historical data.
19
Outages
since 1999
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Average time from first power generation (>0%) to sustained full power (≥95% for 2+ days) across the last 3 scheduled outages. Click to compare against the fleet on the Operator Efficiency Leaderboard.
2.7
Avg Startup
days (last 3)
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Average fuel utilization — percent of the designed fuel cycle that this unit consumes before refueling, derived from the historical burn-down trajectory. Higher = more efficient operator (refuels with less margin remaining; closer to coastdown). Computed as 100% minus the unit's average refuel-point fuel %, using the last 3 years where available, otherwise lifetime average. Click to compare against the fleet on the Operator Efficiency Leaderboard.
97.6%
Fuel Utilization
3yr avg
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NukeWorker's Operational Excellence Score is a composite 0–100 ranking of every active US nuclear unit across 7 measured performance metrics, grouped into three sub-scores:
• Reliability — capacity factor, forced outage days, B2B avg streak
• Efficiency — fuel utilization, refuel duration
• Discipline — startup duration, scram count
Each unit's metric is converted to a percentile across the active fleet. Sub-score = average of its components; composite = average of the three sub-scores. Use the time-window toggle below to switch between 3yr / 5yr / lifetime.
Time window — change how far back we look
5-yr trend: 2021: 46/100 (#56/93)2022: 32/100 (#71/92)2023: 32/100 (#74/92)2024: 39/100 (#66/92)2025: 43/100 (#61/92)2026: 47/100 (#47/93) ↑ +3.7 pts vs 2025
Compare North Anna 2 head-to-head with up to 3 other units. Compare now
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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

North Anna 2 has 48 outages plotted here, averaging 21 days each. The most recent, in Sep 2026, was a scheduled refueling outage lasting 12 days.
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Time in days from first power generation (>0%) to sustained full power (≥95% for 2+ consecutive days) after each scheduled refueling outage. The dashed line marks the average. Includes startup testing holds and power dips.

Startup Duration Trend

After a refueling outage, North Anna 2 takes about 4 days to climb from first power back to full power. That average is drawn from 18 startups on record, and the most recent took 3 days.
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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

Over its operating life, North Anna 2 has run at about 89.2% of its rated capacity. Across the last 12 reported months it averaged 93.5%. On the chart, flat stretches near the top are full-power running and drops to zero are outages.
This table logs every recorded outage for North Anna 2, 48 in all since 1999. Of those, 19 were scheduled refueling outages and 29 were unplanned or forced. The typical outage lasted about 21 days. Where the Scheduled column shows (Model), the date is a NukeWorker projection because the utility had not published one.
Type ⇅ Actual Start ⇅ Actual End ⇅ Duration ⇅ Days Online ⇅ Scheduled Delta
Scheduled 2R31
2026-09-06 In Outage 12+ 519d 2026-09-08 -2d
Scheduled 2R30
2025-03-02 2025-04-05 35 434d 2025-03-02 0d
Unscheduled
2023-12-19 2023-12-24 6 67d - -
Scheduled 2R29
2023-09-10 2023-10-13 34 358d 2023-09-09 +1d
Scram # 56073
2022-08-28 2022-09-17 21 2d - -
Unscheduled
2022-08-14 2022-08-26 13 126d - -
Scheduled 2R28
2022-03-06 2022-04-10 36 504d 2022-03-05 +1d
Scheduled 2R27
2020-09-13 2020-10-18 36 149d 2020-09-07 +6d
Unscheduled
2020-04-10 2020-04-17 8 368d - -
Scheduled # 53908 2R26
2019-03-03 2019-04-08 37 446d 2019-03-03 0d
Unscheduled
2017-12-11 2017-12-12 2 63d - -
Scheduled 2R25
2017-09-10 2017-10-09 30 403d 2017-09-10 0d
Unscheduled
2016-07-31 2016-08-03 4 112d - -
Scheduled 2R24
2016-03-06 2016-04-10 36 513d 2016-03-06 0d
Scheduled 2R23
2014-09-07 2014-10-10 34 216d 2014-09-07 0d
Scram # 49784
2014-02-03 2014-02-03 1 249d - -
Scram # 49075
2013-05-29 2013-05-30 2 8d - -
Scram # 49020
2013-05-11 2013-05-21 11 3d - -
Scheduled 2R22
2013-04-07 2013-05-08 32 164d 2013-04-07 0d
Scram # 48436
2012-10-24 2012-10-25 2 5d - -
Unscheduled
2012-10-09 2012-10-19 11 324d - -
Scheduled # 47181 2R21SGR/Major
2011-08-24 2011-11-20 89 290d 2011-09-25 -32d
Unscheduled
2010-11-07 2010-11-07 1 20d - -
Unscheduled
2010-09-29 2010-10-18 20 103d - -
Unscheduled
2010-06-17 2010-06-18 2 15d - -
Unscheduled
2010-05-28 2010-06-02 6 30d - -
Unscheduled
2010-04-28 2010-04-28 1 4d - -
Scheduled 2R20
2010-03-21 2010-04-24 35 99d 2010-03-21 0d
Unscheduled
2009-12-10 2009-12-12 3 393d - -
Unscheduled
2008-10-30 2008-11-12 14 4d - -
Scheduled 2R19
2008-09-14 2008-10-26 43 219d 2008-09-14 0d
Unscheduled
2008-02-02 2008-02-08 7 31d - -
Unscheduled
2007-12-26 2008-01-02 8 171d - -
Unscheduled
2007-06-30 2007-07-08 9 70d - -
Scheduled 2R18
2007-03-18 2007-04-21 35 122d 2007-03-17 +1d
Unscheduled
2006-11-16 2006-11-16 1 382d - -
Scheduled 2R17
2005-10-02 2005-10-30 29 56d 2005-10-01 +1d
Unscheduled
2005-08-06 2005-08-07 2 421d - -
Unscheduled
2004-06-11 2004-06-11 1 12d - -
Scheduled 2R16
2004-05-02 2004-05-30 29 457d 2004-05-01 +1d
Scheduled 2R15SGR/Major
2002-09-08 2003-01-31 146 259d 2002-09-08 0d
Unscheduled
2001-12-23 2001-12-23 1 8d - -
Unscheduled
2001-10-29 2001-12-15 48 203d - -
Scheduled 2R14
2001-03-11 2001-04-09 30 50d 2001-03-11 0d
Unscheduled
2001-01-20 2001-01-20 1 291d - -
Unscheduled
2000-04-04 2000-04-04 1 123d - -
Unscheduled
1999-12-03 1999-12-03 1 55d - -
Scheduled 2R13
1999-09-12 1999-10-09 28 - 1999-09-12 0d
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