The Bruce to Milton Transmission Reinforcement Project is a 176-kilometre, double-circuit 500 kilovolt (kV) line that runs between the Bruce Nuclear Generating Station in Kincardine and Hydro One’s switching station in Milton. The line includes approximately 158 kilometres of new double circuits between the Bruce Nuclear Generating Station and Highway 7, and approximately 18 kilometres of existing double circuits between Highway 7 and Hydro One’s Milton Switching Station.

The limited partnership wholly owns two of the four Hydro One-built Bruce to Milton transmission circuits located between Bruce Nuclear Generating Station and Hydro One’s switching station in Milton.

The plan to build the line was announced in 2007 and was completed in 2012.

The transmission line has the capacity to transmit 3,000 Megawatts (MW) of clean, renewable energy.

The project is the largest expansion of Ontario’s electricity transmission system in more than 20 years and as a result, is a major addition to the province’s electricity grid.