Browns Ferry 1 offline in extended unscheduled outage

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Browns Ferry 1 began a forced extended outage on April 18, 2026, ending a 331-day unscheduled-outage-free streak. This event marks the first forced outage for the unit in 2026, matching the total number of forced outages recorded for the unit during all of 2025.

ATHENS, AL — An unscheduled outage at Browns Ferry 1 began on Apr 18, 2026. The NRC has not yet issued an event notification for this trip; this post will be updated if one is filed. This has been classified as an extended forced outage based on its duration.

This is the first unscheduled outage of 2026 for the unit, which had 1 unscheduled outage in all of 2025.

Across the U.S. fleet of 94 commercial reactors, today's combined capacity factor is 91.3% (5 currently in refueling), above the 87.0% baseline for this month over the past five years. At the same site, Browns Ferry 2 and Browns Ferry 3 are both running at full power.

Browns Ferry 1 is a 1,256-MW General Electric BWR/4 operated by Tennessee Valley Authority (commercial operation since 1974). At full power, it supplies enough electricity for roughly 1 million homes. The utility operates 6 other U.S. nuclear units. Its operating license runs through 2053 (renewed in 2025).

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View Browns Ferry 1's ratings, history, predictions, and current status on NukeWorker. This thread will be updated when the unit returns to service.

Want the full picture? Subscribe to the NukeWorker outage schedule for every current and upcoming U.S. nuclear outage: refueling, forced, and the 18-month rolling forecast.

Sources: NRC Daily Reactor Power Status reports, utility-published outage schedules, and NukeWorker's predictive model.

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Browns Ferry 1 returned to service on April 23, 2026, following a six-day forced extended outage that began on April 18. This event marks the first forced outage for the unit in 2026, matching the total count recorded for the entirety of 2025. The 1,256-MW General Electric BWR/4 unit is operated by the Tennessee Valley Authority.

Browns Ferry 1 returned to service on Apr 23, 2026 after a 6-day unscheduled outage that began on Apr 18, 2026. A multi-day outage in this range typically points to a single equipment fix rather than a major component issue.

The unit's next scheduled refueling outage is about 5 months away.

The 6-day outage removed roughly 166,000 MWh from the grid, worth approximately $7 million at recent wholesale prices, equivalent to a year's electricity for about 15,000 homes.

View Browns Ferry 1's ratings, history, predictions, and current status on NukeWorker.

Want the full picture? Subscribe to the NukeWorker outage schedule for every current and upcoming U.S. nuclear outage: refueling, forced, and the 18-month rolling forecast.

Sources: NRC Daily Reactor Power Status reports, utility-published outage schedules, and NukeWorker's predictive model.