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All
PWR
BWR
Operating
+ D&D
Scheduled refueling outages only. Extended forced outages (>180 days) and decommissioned plant periods are excluded by default.
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Number of scheduled refueling outages that started in the current calendar year (filtered).
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Outages This Year
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Fleet-wide average duration of scheduled refueling outages in days (filtered dataset).
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Avg Duration
Days
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Spring (Jan-Jun) vs Fall (Jul-Dec) outage counts with percentages.
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Spring / Fall
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The single busiest outage season on record — the most outages started in one half of a year.
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Record Season
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Total number of unique scheduled refueling outages tracked since 2000 (filtered).
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Total Outages
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Average number of scheduled outages per year across the filtered time range.
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Avg Per Year
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Stacked bar chart showing scheduled refueling outages by season (Spring: Jan-Jun, Fall: Jul-Dec) for each year. Use filters above to narrow by plant, region, type, or owner.
Outages by Season
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Overall breakdown of outages between Spring (Jan-Jun) and Fall (Jul-Dec) seasons for the filtered dataset.
Seasonal Split
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Average outage duration in days by year, split by season. Shows how refueling outage execution times have trended over the fleet's history.
Average Outage Duration by Year
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Top 15 plants ranked by total outage count. Toggle between most and fewest outages, normalize per GW of capacity, or aggregate by utility owner. Click a bar to view that plant's detail page.
Fewest Outages — Top 15
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Distribution of outage durations in 30-day buckets. Shows how many outages complete quickly (0-30 days) vs extend into long durations (120+ days).
Duration Distribution
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Top 15 plants ranked by average outage duration in days. Toggle to see longest or shortest performers, or aggregate by owner. Click a bar to view that plant's detail page.
Longest Avg Duration — Top 15
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Fleet-wide average outage duration per year with a linear trend line. Shows whether the industry is getting better or worse at outage execution over time. The dashed line indicates the overall direction.
Fleet Duration Trend — Year over Year
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Grouped bar chart comparing spring vs fall outage counts per plant. Identifies plants that consistently schedule more outages in one season. Click a bar to view that plant's detail page.
Spring vs Fall by Plant — Top 15
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Top 15 plants ranked by how many days have elapsed since their most recent outage started. Longer streaks indicate plants on extended fuel cycles or those that haven't had a recent refueling.
Longest Active Streak
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Average months between successive outages for each plant. Plants on 18-month fuel cycles will show ~18, while 24-month cycle plants show ~24. Helps identify refueling cycle patterns.
Avg Months Between Outages
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Detailed yearly breakdown of outage counts and average durations by season. Heatmap coloring indicates relative activity. Click any row to view that year's full outage schedule.
Detailed History
| Year | Spring | Avg Days | Fall | Avg Days | Total | Activity |
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