- ABB to modernize excitation systems at the Bruce Nuclear Generating Station in Ontario to extend the life and reliability of eight units
- Canadian-built UNITROL® 6000 X-power technology will enhance stability, safety and operational efficiency
- Project supports Canada’s low-carbon energy growth, with nuclear generation seen as a key component of a diversified energy mix
ABB has been selected by Bruce Power to supply advanced excitation technology that will help extend the life, reliability and efficiency of eight units at the Bruce Nuclear Generating Station in Ontario – one of Canada’s largest sources of low-carbon electricity. The multi-year contract reinforces ABB’s expertise in excitation systems for the nuclear sector and its leadership in the North American market. The order was booked in the fourth quarter of 2025. Financial details were not disclosed.
ABB will modernize the existing excitation systems, which contribute to stable power generation, at both Bruce A and Bruce B stations. Replacing the facility’s infrastructure with ABB’s UNITROL® 6000 X-power technology will enable improved reliability and operational efficiency across the units, supporting safe and dependable power generation for the Canadian energy market.
Engineered to meet the demanding requirements of generators in nuclear power plants, UNITROL excitation systems 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 out of ABB’s Centre of Excellence in Montreal, which offers close to five decades of experience in the nuclear market.
Nuclear energy, which the Government of Canada views as an important component of a diversified energy mix1, currently supplies approximately 15 percent2 of the country’s electricity. It also plays a central role in maintaining Ontario’s power system, with nuclear providing 53 percent of the province’s electricity mix in 20243.
“Bruce Power and ABB are coming together on this made-in-Canada contract to upgrade our excitation systems and deliver clean, reliable energy to the people of Ontario for decades to come,” said James Scongack, Chief Operating Officer and Executive Vice-President at Bruce Power. “This contract supports good jobs, the economy, and Canada’s energy independence.”
“This made-in-Canada partnership between Bruce Power and ABB strengthens Ontario’s position as a global leader in clean, reliable nuclear energy,” said Stephen Lecce, Minister of Energy and Mines, Legislative Assembly of Ontario. “Bruce Power is refurbishing and modernizing its fleet on-time and on-budget, while protecting Ontario jobs and driving more investment here at home.”
ABB employs 3,300 people in Canada with eight locations based in Ontario. Its factory in the neighboring province of Quebec has been manufacturing excitation systems for more than five decades, and the close proximity of field service engineers will enable rapid regional response support.
“ABB is proud to be a partner in Bruce Power’s long-term investment in the future of low-carbon energy in Canada,” said Danilo Moresco, Head of Power Reliability at ABB’s Energy Industries division. “The continued global demand for secure, low-carbon electricity means that the modernization and life extension of critical nuclear infrastructure is essential, and we remain dedicated to supporting the energy transition through technology innovation and more sustainable solutions.”
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 and budget, 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.
ABB is a global technology leader in electrification and automation, enabling a more sustainable and resource-efficient future. By connecting its engineering and digitalization expertise, ABB helps industries run at high performance, while becoming more efficient, productive and sustainable so they outperform. At ABB, we call this ‘Engineered to Outrun’. The company has over 140 years of history and around 110,000 employees worldwide. ABB’s shares are listed on the SIX Swiss Exchange (ABBN) and Nasdaq Stockholm (ABB). www.abb.com
ABB’s Automation business automates, electrifies and digitalizes industrial operations that address a wide range of essential needs – from supplying energy, water and materials, to producing goods and transporting them to market. With its ~26,000 employees, leading technology and service expertise, Automation helps process, hybrid and maritime industries outrun – leaner and cleaner. go.abb/automation
1 https://natural-resources.canada.ca/energy-sources/nuclear-energy-uranium/nuclear-energy
2 https://world-nuclear.org/Information-Library/Country-Profiles/countries-A-F/Canada-Nuclear-Power
3 https://www.ontario.ca/page/energy-generations#section-1
