Prior to its planned outage, Unit 4 had a record run of over 570 days of continuous operation.
Bruce Power's president and CEO, Duncan Hawthorne, said having all four units at Bruce A in operation is important to Ontario as the Canadian province moves to phase out coal-fired electricity.
Bruce Power operates the nuclear generating facility that is the source of roughly 25 percent of Ontario's electricity. The company's site in Tiverton, Ontario is home to eight CANDU reactors, each one capable of generating enough low-cost, reliable, safe and clean electricity to meet the annual needs of a city the size of Hamilton.
Formed in 2001, Bruce Power is an all-Canadian partnership among TransCanada, Cameco, Borealis Infrastructure Management (a division of the Ontario Municipal Employees Retirement System) as well as the Power Workers' Union and Society of Energy Professionals. A majority of Bruce Power's employees are also owners in the business.