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Number of nuclear facilities with community ratings from NukeWorker members. Bayesian scoring accounts for vote count.
97
Facilities Rated
community ratings
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Fleet-wide average capacity factor — total generation divided by total installed capacity across all reporting units.
91.4%
Fleet Capacity Factor
2025
?
Average duration of scheduled refueling outages across the fleet over the last 5 years.
49.2
Avg Outage Duration
days (5-yr avg)
?
Total confirmed reactor scrams (automatic + manual trips) reported to the NRC so far this calendar year.
6
YTD Scrams
2026
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Fleet average breaker-to-breaker run length — the typical number of continuous operating days between scheduled outages.
576
Avg B2B Streak
days
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Fleet average forced (unplanned) outage days per unit over the last 5 years. Calculated as total zero-power days minus scheduled outage days.
29
Avg Forced Outage
days (5-yr, per unit)
Fleet Quartile Highlights
Facility Rankings
Bayesian-scored community ratings from NukeWorker members. Higher is better — scores account for vote count, pulling low-data facilities toward the fleet average.
Top Quartile
- 1Diablo Canyon 179.5
- 2Comanche Peak 171.9
- 3Ginna69.2
- 4Susquehanna 266.9
- 5Callaway66.8
Bottom Quartile
- 93Indian Point 237.5
- 94River Bend 136.6
- 95Turkey Point 433.9
- 96Dresden 232.7
- 97Perry 132.1
Capacity Factor
Per-unit average capacity factor over the last 2 years. Higher is better — top quartile units consistently run above 90%.
Top Quartile
- 1Point Beach 198%
- 2Byron 297.9%
- 3Oconee 197.9%
- 4Braidwood 297.9%
- 5Limerick 297.4%
Bottom Quartile
- 91Hatch 177.1%
- 92Summer75.3%
- 93Turkey Point 374.1%
- 94Sequoyah 268.2%
- 95PalisadesN/A
Outage Duration
Per-unit average scheduled outage duration over the last 5 years. Shorter is better — top quartile units complete refueling outages faster.
Top Quartile
- 1Limerick 112.7 days
- 2Peach Bottom 213.5 days
- 3Ginna14.3 days
- 4Limerick 214.3 days
- 5Peach Bottom 314.7 days
Bottom Quartile
- 90Prairie Island 268.7 days
- 91Prairie Island 171 days
- 92Waterford 376 days
- 93Sequoyah 289.5 days
- 94Vogtle 4107 days
Scram Performance
Per-unit scram count over the last 5 years. Fewer is better — top quartile units have the fewest unplanned reactor trips.
Top Quartile
- 1McGuire 11 scrams
- 2Palo Verde 11 scrams
- 3LaSalle 21 scrams
- 4Diablo Canyon 11 scrams
- 5Diablo Canyon 21 scrams
Bottom Quartile
- 72Watts Bar 26 scrams
- 73River Bend 16 scrams
- 74Grand Gulf 16 scrams
- 75Vogtle 37 scrams
- 76Calvert Cliffs 28 scrams
B2B Streak Length
Per-unit average breaker-to-breaker continuous operating days. Longer is better — top quartile units run the longest between outages.
Top Quartile
- 1Dresden 3715 days
- 2LaSalle 1714 days
- 3Peach Bottom 3711 days
- 4Peach Bottom 2710 days
- 5Brunswick 1708 days
Bottom Quartile
- 93Kewaunee485 days
- 94Sequoyah 2483 days
- 95D.C. Cook 2479 days
- 96Callaway467 days
- 97Crystal River 3412 days
Forced Outage Days
Unplanned outage days per unit over the last 5 years. Calculated as total zero-power days minus scheduled outage days. Fewer is better.
Top Quartile
- 1Oconee 12 days
- 2Peach Bottom 33 days
- 3Nine Mile Point 13 days
- 4FitzPatrick3 days
- 5Byron 23 days
Bottom Quartile
- 90Prairie Island 1108 days
- 91Grand Gulf 1119 days
- 92Watts Bar 1126 days
- 93Vogtle 3218 days
- 94Callaway252 days
Detailed Dashboards
Bayesian-ranked community ratings for every U.S. nuclear plant. Sortable table with quartile badges, vote counts, and inline voting. Active and decommissioned facilities separated.
Facility Rankings
Bayesian-scored community ratings
Daily fleet generation and capacity factor with interactive charts. Filter by plant, owner, region, or reactor type. Includes seasonal trends, year-over-year comparison, and per-unit rankings.
Grid Capacity
Daily generation & capacity factor
Scheduled refueling outage analytics with duration trends, spring vs fall comparisons, and per-unit rankings. Filter by plant, owner, or reactor type. Includes outage duration charts and prediction accuracy.
Outage Statistics
Refueling duration & seasonal trends
Every NRC-reported reactor scram since 2011. Automatic vs manual breakdown, PWR vs BWR trends, recovery time analysis, and interactive map. Filter by plant, owner, or event type.
Scram Dashboard
Trip events & recovery times
Registry of every qualifying breaker-to-breaker run (470+ days continuous operation). Active streak leaderboard, per-owner analysis, and year-over-year B2B run trends.
B2B Registry
Continuous operation records
Historical reference data: construction permit and operating license milestones, fastest and slowest construction timelines, thermal efficiency rankings, containment type distribution, and fleet capacity factor trends.
Reference Data
Lifecycle, construction, efficiency
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