Outage Board · updated daily
Outages
Offline now, coming next, and recently returned, priced in megawatts. As of Oct 9, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
Active Now
18
13,804 MW offline or derated
Upcoming
every unit's next outage date
At Risk · Next 60 Days
megawatts due off line within 60 days
Resolved · 120 Days
what came back, and how long it took
Projected outage start and duration is one of three numbers nobody else publishes. Refueling dates are not published by any operator or regulator and cannot be scraped. Where an operator has filed one we carry it; where nobody has, we project it, and we publish how close those calls land. The Upcoming tab below is built from them. See the start-date score
Sources: NRC Daily Power Reactor Status Report (U.S. status), IESO Generator Output & Capability Report (Ontario, tagged IESO, market MW rather than NRC percent-power and excluded from the U.S. counts above), and the NukeWorker schedule + ML projection engine (upcoming). Supply-loss tags are a share of the market's own nuclear fleet, so a 1,200 MW loss reads differently in PJM than in a two-unit market. Unit names link to the full facility page on NukeWorker.com.
Ontario (IESO) separate fleet
Ontario detailMW Offline
4,600 MW
37.8% of the Ontario fleet
Units Offline
7 of 16
Bruce, Darlington, Pickering
Delivering
7,520 MW
of 12,160 MW installed
Resolution
1 hour
vs. once-daily for the U.S. fleet
Ontario outages, detected from the hourly IESO signal. Ontario is reported as a separate fleet and is never added into the U.S. national figures above. IESO grid-operator market data (MW delivered), not NRC percent-power.