Callaway wraps Fall refuel in 40 days, 5 days ahead of schedule

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Callaway, Fulton, Missouri.

Callaway finished its routine refueling outage 5 days ahead of the 45-day schedule. The outage lasted 40 days, which is 11.1 days below the 51.1-day average of the unit's 18 prior refuels. As of the Nov 10, 2026 NRC report, the unit is back at 95% power.

40 days outage · 5 days ahead of schedule · 1,190 MW back at full power

After 40 days offline for its Fall 2026 refueling outage, Callaway reached full power on Nov 10, 2026. The outage began on Sep 26, 2026. The reactor was critical by the NRC's Nov 5, 2026 report and back on the grid by Nov 9, 2026. First power to full power took 5 days.

The published schedule had it at 45 days (Sep 26, 2026 to Nov 10, 2026), so the actual ran 5 days shorter than planned.

The outage ran about 11 days shorter than the unit's 18-cycle average of 51.1 days.

Counting the 40 days offline and the climb back to full power, the outage cost roughly 1.24 million MWh of generation, worth approximately $50 million at recent wholesale prices.

Across the U.S. fleet of 94 commercial reactors, today's combined capacity factor is 84.2% (12 units currently refueling, 3 units in unscheduled outages), below the 88.0% baseline for this month over the past five years. Point Beach 1, Peach Bottom 2, Sequoyah 2, and Cooper also completed refueling outages within the past week.

Callaway is a 1,190-MW Westinghouse 4-loop PWR operated by Ameren Missouri (commercial operation since 1984). At full power, it supplies enough electricity for roughly 952,000 homes. 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.

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

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