Bruce A Restart and Refurbishment Project (3,000 MW) - Tiverton

New turbine rotors arrived at the site in August 2011.

Additional Project Photos

The Bruce Nuclear facility, located on Lake Huron in Tiverton Ontario, is the largest nuclear facility in North America in terms of output with a total output capacity of 6,224 MW (net) and 6,610 MW (gross).  It houses two nuclear generating stations – Bruce A and Bruce B – and each generating station has four CANDU reactors. 

The facility was constructed in stages between 1970 and 1987 by the provincial Crown Corporation, Ontario Hydro. Bruce A Units were taken out of service between 1995 and 1998.  Bruce B Units continued in service. 

In 2001, Bruce Power L.P., a partnership among Cameco Corporation, TransCanada Pipelines, BPC Generation Infrastructure Trust, and the two main unions on the Bruce site, The Power Workers’ Union and The Society of Energy Professionals, entered into a lease agreement with Ontario Power Generation relating to the facility.  Units 3 and 4 were restarted between 2003 and 2004 following an approximately $725 million investment.

On October 17, 2005 Ontario Power Authority signed an agreement with Bruce Power L.P. and Bruce Power A L.P., the Bruce Power Refurbishment Implementation Agreement (BPRIA), as directed by the Minister of Energy to restart Units 1 and 2, refurbish Unit 3 and replace the steam generators of Unit 4 at an estimated cost of $4.25 billion.

On August 29, 2007 the BPRIA was expanded to include the full refurbishment of Unit 4, rather than the more limited steam generator replacement program that was originally planned at an additional cost of $1 billion.

In October 2012 Bruce A units 1 and 2 were restarted and achieved commerical operation, supplying a combined capacity of 1,500 MW to the Ontario grid after being shutdown for 17 years. 


Location: Tiverton, Ontario
OPA Contracted Capacity: 3,000 MW
Developer: Bruce Power LP and Bruce Power A LP
Technology: (CANDU design)
Commercial Operation Date: Unit 1 - October 22, 2012
Unit 2 - October 31, 2012


Project Progress



Bruce Power

Bruce Restart

Bruce Power Refurbishment Implementation Agreement

Bruce Power Update, August 2012

Project Contacts:

Ontario Power Authority
Media and Public Relations
T. 416-969-6307 or