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Ontario's Largest Transmission Project Producing Power

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Ontario's Largest Transmission Project Producing Power

McGuinty Government Brings More Clean, Reliable Power Online, Creates 500 Jobs

Ontario's largest transmission infrastructure project in 20 years is now transmitting electricity. The Bruce to Milton transmission expansion project will connect more than 3,000 megawatts of clean, renewable energy to Ontario's grid - enough power for Milton, London, Guelph, Chatham, Mississauga, Brampton, Hamilton and St. Catharines, combined.

Hydro One completed the transmission line six months ahead of schedule and employed approximately 500 workers at the peak of construction activity. The project involved constructing more than 700 transmission towers, and stringing more than 180 kilometres of transmission wire from the Bruce Peninsula to Milton.

Strengthening Ontario's electricity infrastructure is an important part of the McGuinty government's plan to build a modern, clean, reliable electricity system -- ensuring the province has the electricity it needs to power homes, schools, hospitals and the economy.

Quick Facts

  • Ontario is modernizing 80 per cent of its energy infrastructure.
  • The Bruce to Milton transmission line will enable more clean energy to come online from the refurbished units at the Bruce Power nuclear facility and 25 large solar and wind projects announced last summer.
  • The province invested $9 billion to upgrade 5,000 kilometres of transmission lines - the equivalent distance between Toronto and Whitehorse, Yukon to ensure a reliable electricity system.

Additional Resources


“Today marks a major milestone in Ontario's electricity infrastructure and we are paving the way for a future that offers new technologies while delivering clean, renewable power for growing communities and generations to come.”

Chris Bentley

Minister of Energy

“We are proud to celebrate the partnerships built and strengthened as a result of the construction of this line. The project was made possible through a shared commitment from the residents, businesses, municipalities, conservation groups and First Nations and Métis groups along the corridor.”

Laura Formusa

President and CEO of Hydro One

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