Bruce Power and the Ontario Power Authority (OPA) have amended their existing Bruce A agreement to allow for the complete refurbishment of Unit 4.

Bruce Power will now replace all 480 fuel channels in Unit 4, extending its operational life until 2036. Under the original 2005 agreement, Bruce Power intended to install new steam generators in all four Bruce A units and fuel channels in Units 1, 2 and 3. Without new fuel channels, Unit 4 was only expected to run until 2017.

Under the revised plan, Bruce Power expects to invest an additional C$1 billion ($961 million), resulting in a total investment in the restart and refurbishment programme of approximately C$5.25 billion ($5 billion).

Bruce Power expects to complete the work on Units 3 and 4 by 2013.