Longest Uninterrupted Operating Run by a Nuclear Reactor

Darlington Nuclear Generating Station Unit 1

Darlington Nuclear Generating Station, Clarington, Ontario, Canada

Darlington Nuclear Generating Station Unit 1 in Ontario, Canada, generated power continuously for 1,106 days from 26 January 2018 until a planned outage on 5 February 2021, setting a world record for uninterrupted nuclear-reactor operation.