Callaway begins Fall 2026 refueling outage

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Callaway, Fulton, Missouri.

Callaway began a scheduled refueling outage on September 26, 2026, starting on its planned date for the fall season. The 1,190-MW Westinghouse four-loop pressurized water reactor entered the maintenance window with a scheduled duration of 45 days.

Operated by Union Electric Company in Missouri, the unit entered this refuel following a 301-day unscheduled-outage-free streak. The plant had run about 82 percent of its typical 548-day operating cycle after recording a 66.8 percent capacity factor in 2025. Nationwide, the fleet operated at a 90.1 percent capacity factor across 94 units, with nine units currently in refueling.

FULTON, MO. Callaway entered a refueling outage on Sep 26, 2026. The unit started on the published date (Sep 26, 2026) with a planned 45-day outage running through Nov 10, 2026.

NukeWorker's start-date projection scores 100% accuracy for this unit.

Across the U.S. fleet of 94 commercial reactors, today's combined capacity factor is 90.1% (9 units currently refueling), below the 92.8% baseline for this month over the past five years. Byron 2 and Cooper also began refueling outages within the past week. With the unit offline for refueling, that takes about 952,000 homes' worth of generation off the grid.

Callaway is a 1,190-MW Westinghouse 4-loop PWR operated by Union Electric Co - (MO) (commercial operation since 1984). Its operating license runs through 2044 (renewed in 2015). The unit ran at a 66.8% capacity factor in 2025, with some downtime through the year.

Heading to Fulton, MO for outage work? Current per-diem averages $110/night lodging plus $68/day meals (total $178/day), and Unemployment Benefits are $320 weekly. See open nuclear jobs in Missouri on NukeWorker.

View Callaway's ratings, history, projections, and current status on NukeWorker.

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

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Callaway's reactor is critical: the NRC's Nov 5, 2026 report shows it at 15% power in Mode 1, the first reading above zero since its Fall 2026 refueling outage began on Sep 26, 2026.

NRC daily power since restart: Nov 5 15%

View Callaway's ratings, history, projections, and current status on NukeWorker.

Source: NRC Daily Reactor Power Status reports.