Limerick 1 starts Spring 2026 refueling outage 7 days late

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Limerick 1 began its refueling outage on April 27, 2026, seven days later than the published schedule. The unit entered this outage following an 844-day streak without an unscheduled outage. NukeWorker maintains a 93 percent duration-prediction accuracy for this unit, which has a 21.8-day average across 13 prior refuels.

POTTSTOWN, PA — Refueling activities began at Limerick 1 on Apr 27, 2026. The published schedule had a Apr 20, 2026 start; actual is 7 days later than planned. Planned outage length is 24 days (back to service around May 14, 2026).

Going into the refueling, the unit had run for more than 2 years without an unscheduled outage. NukeWorker's predictive model scores 100% on start-date accuracy for this unit.

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, Limerick 2 is running at full power.

Limerick 1 is a 1,120-MW General Electric BWR/4 operated by Constellation Nuclear (commercial operation since 1986). At full power, it supplies enough electricity for roughly 896,000 homes. The utility operates 20 other U.S. nuclear units. Its operating license runs through 2044 (renewed in 2014). The unit ran at a 99.9% capacity factor in 2025, among the unit's strongest cycles.

Heading to Pottstown, PA for outage work? Current per-diem averages $117/night lodging plus $74/day meals (total $191/day), and Unemployment Benefits are $605 weekly. See open nuclear jobs in Pennsylvania on NukeWorker.

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