Interior – Lower Mainland Line is a 500kV overhead line with a length of 247km from Nicola Substation, Merritt, British Columbia, Canada, to Meridian Substation, Coquitlam, British Columbia, Canada.

Construction works on the Interior – Lower Mainland Line started in 2014 and the project was commissioned in 2015.


The Interior – Lower Mainland Line, which is an overhead line, is being operated by BC Hydro. The Interior – Lower Mainland Line is a new line. The line carries alternating current (AC) through double circuit cable.

Interior – Lower Mainland Line project development status

The development of the Interior – Lower Mainland Line project was approved by British Columbia Utilities Commission in 2014 and the project works were completed in 2015.

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About BC Hydro

BC Hydro, a Crown corporation, is an integrated electric utility. It generates, transmits and distributes electricity. The company produces power using hydro and thermal sources. Through long- and short-term commitments and other, BC Hydro purchases electricity; and has partnerships with projects across the province, including biomass, hydro, wind and solar. It delivers electricity to residential, commercial, trade, light and large industrial, and other customers in British Columbia. The company has operations in Vernon, Prince George, Kamloops, Burnaby, Cranbrook, Nanaimo, Surrey, Revelstoke, and Victoria. It is owned by the government and people of British Columbia.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.