ABB has been selected by Bruce Power to supply advanced excitation technology that will help extend the life of eight units at the Bruce Nuclear Generating Station in Ontario – one of Canada’s largest sources of low-carbon electricity.
ABB will modernise the existing excitation systems, which contribute to stable power generation, at both the Bruce A and Bruce B stations. Replacing the facility’s infrastructure with ABB’s UNITROL 6000 X-power technology should enable improved reliability and operational efficiency across the units.
Engineered specifically for the requirements of generators in nuclear power plants, UNITROL excitation systems are said to deliver control performance to ensure synchronous machines operate safely and in full compliance with grid codes. Backed by validated models and advanced simulation services, they are delivered from ABB’s Centre of Excellence in Montreal, which has nearly five decades of experience in the nuclear market.
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Nuclear energy, which the Government of Canada views as an important component of a diversified energy mix, currently supplies approximately 15% of the country’s electricity demand. It also plays a central role in maintaining Ontario’s power system, with nuclear accounting for 53% of the province’s electricity mix in 2024.
As part of Bruce Power’s Major Component Replacement Project, Units 3–8 at the Bruce Nuclear Generating Station are scheduled to be refurbished by 2033. A renewed Unit 6 was successfully returned to service in 2023, ahead of schedule, while Unit 3 and Unit 4 outages remain on track. Engineering and design for the excitation project will take place over the next two years, with the first systems expected on-site by the end of 2027.
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