Peach Bottom 2

Refueling Outage · Day 12

Constellation Energy·Delta, PA·BWR·1,265 MWe

Data refreshed 13.4h ago Rx Status: Oct 23, 2026 at 5:36 AM (M-F)

Outage History Daily Power Log Get alerts

Reactor Status Timeline

Refueling Outage · Day 12 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.
Nov2025DecJan2026FebMarAprMayJunJulAugSepOctNovOnline: Oct 23, 2025 to Nov 21, 2025Reduced Power: Nov 22, 2025Online: Nov 23, 2025 to May 15, 2026Reduced Power: May 16, 2026Online: May 17, 2026 to Jul 17, 2026Reduced Power: Jul 18, 2026Online: Jul 19, 2026 to Sep 29, 2026Coastdown: Sep 30, 2026 to Oct 11, 2026Refueling Outage (P2R26): Oct 12, 2026 to Oct 23, 2026Today
OnlineReduced PowerCoastdownRefueling 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
Rank locked · 93 units
Subscribers
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Days of continuous operation since the last outage ended (Started 2026-10-23). Has forced outage(s) since last refueling.
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Current Run
offline
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Longest recorded period of continuous operation between outages (2012-10-17 to 2014-10-20).
733
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.
7
B2B Runs
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Lifetime capacity factor: average power level across all recorded days (100% = always at full power).
94.2%
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.
21.92 TWh
Net Generation
EIA-923 · 12 mo to 2026-07 · plant total
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Total number of scheduled refueling outages detected in the historical data.
14
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.
2.3
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.
99.5%
Fuel Utilization
3yr avg

Reactor Status

Current Reactor Status Oct 23, 2026

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Current power output from NRC daily reactor status reports, updated Monday through Friday, except federal holidays. The gauge shows power level as a percentage of rated capacity. The sparkline shows the last 14 days of power history. Click to view the full unit dashboard.
Peach Bottom 2 is OFFLINE (12 Days) at 0% of rated power as of Oct 23, 2026. This outage is RFO P2R26. Over the last 14 reported days it has run between 0% and 93% power.
Peach Bottom 2 is OFFLINE (12 Days) Get alerts
0
PERCENT
0 200 400 600 800 1000 1200 1,265 RATED CAPACITY (1,265 MWe) 0 MWe
Current:
0 MWe
Powering 0 homes
Rated Capacity:
1,265 MWe
1,012,000 homes
14-Day Power History
93
93
0
0
0
0
0
0
0
0
0
0
0
0
Oct 10 Oct 23

Capacity Factor (365-Day)

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0%
Current
96.1%
365-Day Avg
#33
of 94 plants
Min: 0% Max: 100% 14 days <80%

Outage Days by Year

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Total days spent in outage each year, split by scheduled refueling (blue) and forced/unplanned (red). Lower totals indicate better reliability and outage execution. Hover for details.
Across its recorded history, Peach Bottom 2 has spent 328 days in scheduled refueling outages and 48 days in forced or unplanned outages. Taller bars mark the years with the most downtime.
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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

Peach Bottom 2 has 34 outages plotted here, averaging 11 days each. The most recent, in Oct 2026, was a scheduled refueling outage lasting 12 days.
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Scheduled refueling outage durations over time. Green bars are at or below this unit's average, amber up to 30% above it, red beyond that. The dashed line is the average. Shorter outages mean better execution.

Refueling Duration Trend

Peach Bottom 2 has completed 14 scheduled refueling outages on record, averaging 23 days each. The most recent, in Oct 2026, ran 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, Peach Bottom 2 takes about 4 days to climb from first power back to full power. That average is drawn from 12 startups on record, and the most recent took 3 days.
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Daily reactor power over the 120 days before each scheduled refueling outage, one line per refueling, lined up on the day the outage began. A coastdown is the slow decline as the fuel runs out near the end of a cycle. The highlighted line is the most recent refueling and fainter lines are older. Counts and medians cover coastdowns of a week or longer. A shutdown straight from full power, with no decline ahead of it, is what a forced outage looks like.

Coastdown Before Refueling

13 of 14 refuelings 32 days median 83% power at shutdown 0.3% per day
Peach Bottom 2 coasted down for a week or longer before 13 of its 14 refuelings on record. Those coastdowns ran a median of 32 days and ended near 83% power. The most recent refueling, in Oct 2026, followed a 12-day coastdown from 97% to 93%.
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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, Peach Bottom 2 has run at about 94.2% of its rated capacity. Across the last 12 reported months it averaged 95.0%. On the chart, green stretches near the top are full-power running, amber marks reduced power (50 to 89%), and red drops toward zero are outages.

Outage History & Daily Power Log

This table logs every recorded outage for Peach Bottom 2, 34 in all since 1999. Of those, 14 were scheduled refueling outages and 20 were unplanned or forced. The typical outage lasted about 11 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 P2R26
2026-10-12 In Outage 12+ 706d 2026-10-12 0d
Scheduled P2R25
2024-10-21 2024-11-05 16 102d 2024-10-21 0d
Scram # 57221 Auto
2024-07-11 2024-07-11 1 3d - -
Unscheduled
2024-07-06 2024-07-08 3 158d - -
Scram # 56936 Auto
2024-01-30 2024-01-30 1 458d - -
Scheduled P2R24
2022-10-17 2022-10-29 13 152d 2022-10-17 0d
Scram # 55899 Auto
2022-05-17 2022-05-18 2 183d - -
Scram # 55575 Manual
2021-11-15 2021-11-15 1 365d - -
Scheduled P2R23
2020-10-19 2020-11-15 28 722d 2020-10-19 0d
Scheduled P2R22
2018-10-15 2018-10-28 14 703d 2018-10-15 0d
Scheduled P2R21
2016-10-24 2016-11-11 19 313d 2016-10-24 0d
Unscheduled
2015-12-15 2015-12-16 2 380d - -
Scheduled P2R20
2014-10-20 2014-11-30 42 733d 2014-10-19 +1d
Scheduled P2R19
2012-09-10 2012-10-17 38 705d 2012-09-10 0d
Scheduled P2R18
2010-09-13 2010-10-06 24 695d 2010-09-12 +1d
Scheduled P2R17
2008-09-15 2008-10-18 34 707d 2008-09-15 0d
Scheduled P2R16
2006-09-16 2006-10-09 24 370d 2006-09-15 +1d
Unscheduled
2005-09-09 2005-09-11 3 61d - -
Unscheduled
2005-07-10 2005-07-10 1 156d - -
Unscheduled
2005-02-03 2005-02-04 2 41d - -
Unscheduled
2004-12-23 2004-12-24 2 77d - -
Scheduled P2R15
2004-09-15 2004-10-07 23 203d 2004-09-14 +1d
Unscheduled
2004-02-22 2004-02-25 4 154d - -
Unscheduled
2003-09-15 2003-09-21 7 52d - -
Unscheduled
2003-07-23 2003-07-25 3 101d - -
Unscheduled
2003-04-13 2003-04-13 1 111d - -
Unscheduled
2002-12-22 2002-12-23 2 81d - -
Scheduled P2R14
2002-09-11 2002-10-02 22 319d 2002-09-11 0d
Unscheduled
2001-10-24 2001-10-27 4 113d - -
Unscheduled
2001-07-01 2001-07-03 3 250d - -
Unscheduled
2000-10-24 2000-10-24 1 20d - -
Scheduled P2R13
2000-09-16 2000-10-04 19 119d 2000-09-16 0d
Unscheduled
2000-05-20 2000-05-20 1 229d - -
Unscheduled
1999-10-01 1999-10-04 4 - - -
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