Fall 2026 Outage Data

Benchmark historical performance across a quarter-century of fleet-wide reactor data. Track long-term maintenance trends, refueling cycles, and realized generation impacts from 2000 to the present.

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Data Archive
This timeline maps 5 reactor outages across the US fleet for Fall 2026. That includes 3 unplanned outages and 2 reactor trips. The longest ran 8 days at Fermi 2 and 2 reactors are offline right now.

Gantt Chart Timeline

Unit
Jul
Aug
Sep
Oct
Nov
Dec
Updated Aug 14, 20268/14/26 · 5:28 AM
Refueling Outage
Unscheduled
Utility Schedule
Projected Extension
Forced Outage Projection

Detailed Schedule

The table below lists each outage with its exact start date, end date, and duration. Completed outages during Fall 2026 averaged 8 days.
Unit Type Start Date End Date Duration Context
Fermi 2 Scram Jul 4, 2026 Jul 11, 2026 8 days
River Bend 1 Unscheduled Aug 1, 2026 Aug 8, 2026 8 days -
Millstone 2 Scram Aug 4, 2026 Aug 5, 2026 2 days -
Monticello Unscheduled Aug 10, 2026 Ongoing 5 days+ -
Saint Lucie 1 Unscheduled Aug 14, 2026 Ongoing 1 days+ -
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