Quad Cities 2 completes Spring refuel in 25 days, caps 673-day B2B run

[Outage Wire]

25 days outage · 9 days past schedule · fourth B2B run complete · 911 MW back online

Quad Cities 2 completed its Spring 2026 refueling outage on Apr 23, 2026, returning to service after 25 days. The outage began on Mar 30, 2026.

The published schedule had it at 16 days (Mar 30, 2026 to Apr 15, 2026), so the actual ran 9 days longer than planned. NukeWorker's predictive model anticipated about 22 days based on the unit's recent cycles, with the actual 3 days longer than that projection.

It also capped a 673-day breaker-to-breaker run (over the 626-day threshold for a 24-month cycle), the unit's fourth qualified B2B run. Going into the refueling, the unit had run for more than 2 years without an unscheduled outage. NukeWorker's predictive model scores 66% on duration accuracy for this unit.

The 25-day outage removed roughly 503,000 MWh from the grid, worth approximately $20 million at recent wholesale prices, equivalent to a year's electricity for about 47,000 homes.

Across the U.S. fleet of 94 commercial reactors, today's combined capacity factor is 86.6% (7 currently in refueling, 2 in unscheduled outages), below the 87.0% baseline for this month over the past five years. At the same site, Quad Cities 1 is running at full power. Ginna, South Texas 1, and McGuire 2 also completed refueling outages within the past week.

Quad Cities 2 is a 911-MW General Electric BWR/3 operated by Constellation Nuclear (commercial operation since 1973). At full power, it supplies enough electricity for roughly 729,000 homes. The utility operates 20 other U.S. nuclear units. Its operating license runs through 2032 (renewed in 2004). The unit ran at a 99.3% capacity factor in 2025, among the unit's strongest cycles.

View Quad Cities 2's ratings, history, predictions, and current status on NukeWorker.

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