Bruce Power’s Bruce A station marks new record with all four units running for 100 consecutive days

Bruce Power’s Bruce A units reached a new record of 100 days of continuous operation for all four units, helping the company continue to provide clean, reliable and low-cost electricity to one in three homes, hospitals and businesses in Ontario.

“Ontarians count on Bruce Power to provide a reliable source of clean energy,” said Chris Mudrick, Bruce Power’s Executive Vice-President and Chief Nuclear Officer. “Our continued success in maintaining fleet reliability and providing a dependable source of power to the province is the result of a commitment to excellence and hard work by our employees and supply-chain partners.”

The four units in the Bruce A station were shut down and placed in layup by the former Ontario Hydro between 1995-1998, and were returned to service by Bruce Power, starting with Unit 3 in 2004.

In 2014, the Ontario government closed its final coal plant in what is considered the largest clean-air initiative in North America. Bruce Power, in returning Units 1-4 to service of the previous decade, provided the government with 70 per cent of the carbon-free energy it needed to shut down coal.

In October 2021, Bruce Power announced a new site generation peak of 6,550 megawatts (MW), an increase from 6,300 MW in 2016, which has been achieved through investments and innovations in the facility, and is enough to power up to 250,000 Ontario homes.

Bruce Power is carrying out its extensive Major Component Replacement (MCR) Project to secure site operation until 2064. The MCR Project began in January 2020 and focuses on the replacement of key reactor components in Units 3-8. The Unit 3 Major Component Replacement is scheduled to begin in 2023, followed by Unit 4 in 2025.

About Bruce Power
Bruce Power is an electricity company based in Bruce County, Ontario. We are powered by our people. Our 4,200 employees are the foundation of our accomplishments and are proud of the role they play in safely delivering clean, reliable, low-cost nuclear power to families and businesses across the province and life-saving medical isotopes around the world. Bruce Power has worked hard to build strong roots in Ontario and is committed to protecting the environment and supporting the communities in which we live. Formed in 2001, Bruce Power is a Canadian-owned partnership of TC Energy, OMERS, the Power Workers’ Union and The Society of United Professionals. Learn more at and follow us on Facebook, Twitter, LinkedIn, Instagram and YouTube.