Interior to Lower Mainland Transmission

Transmission lines near Big Bar

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British Columbia is growing, so is the demand for energy

The population and economy of B.C. are growing. Over the next 20 years, we project that the demand for electricity will grow by as much as 40 – 45 per cent. And much of that demand will come from the Lower Mainland and Vancouver Island, the most populated areas of the province.

What’s more, the changing patterns of our electricity use and aging equipment have put pressure on the grid.

The Interior to Lower Mainland (ILM) Transmission Project will enable more electricity to be delivered from areas where it is generated – in the Columbia and the Peace regions – to the Lower Mainland and Vancouver Island, ensuring that homes and businesses continue to receive clean and reliable energy.

Latest updates

  • See Fall 2014 ILM Project Update [PDF, 647 KB]
  • Learn more about the project with our latest video
  • Stringing of the transmission line (conductors/wires) along the new towers has begun. Conductor ends will need to be joined with the use of an implosive connector, which is a metallic sleeve with a small charge in it. Using safe and controlled methods, the sleeve is detonated which joins the conductor ends together. This split-second process will create a flash with smoke and a bang similar to fireworks. Traffic control measures will be in place as needed. Work hours will conform to municipal bylaws.
  • As part of ongoing construction of the ILM Project, helicopters are being used in some areas. All necessary permits and permissions have been obtained, and all work complies with Transport Canada requirements. Wherever possible, helicopters follow routes and schedules that minimize disturbances to residents.

A look at the Interior to Lower Mainland Transmission Line