As part of its plan to protect Ontario and support the energy needs of growing communities, the government has reached a key milestone in the Northwest GTA Transmission Corridor Identification Study. The province is proposing to reduce the boundaries of the transmission corridor and release lands that are no longer required for protection, reducing the lands held for the transmission and highway corridors by approximately 40 per cent. The transmission corridor will host major infrastructure projects that will support
Energy for Generations, the government’s long-term plan to deliver reliable, affordable and secure energy to create good-paying jobs and power Ontario’s future.
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The proposed corridor along Highway 413 is based on a study launched in 2019 to identify a viable route for future transmission infrastructure. The refined corridor reflects detailed technical analysis to identify the narrowest path capable of supporting both 230 kV and 500 kV transmission lines, while preserving flexibility for future transmission designs. The study prioritized co-location with Highway 413, minimizing impacts on natural areas, and avoiding built-up communities.