AltaLink 54L Transmission Rebuild – Public comments invited from August 5 to September 4, 2025  

August 5, 2025- Parks Canada and Fisheries and Oceans Canada must decide whether the proposed project AltaLink 54L Transmission Rebuild, located in Banff National Park is likely to cause significant adverse environmental effects. Parks Canada will be assessing this project using a Detailed Impact Assessment.

To help inform this decision, Parks Canada and Fisheries and Oceans Canada is issuing this notice of intent to make a determination and inviting comments from the public on the project's potential effects on the environment. All comments received will be considered public. For more information on the public nature of your comments, individuals should consult the Privacy Notice on the Registry website.

In order to submit comments or request a copy of the draft Detailed Impact Assessment report, contact:

Banff National Park
224 Banff Avenue, Banff, AB T1L 1B3
helen.irwin@pc.gc.ca

Comments must be submitted by September 4, 2025.

Project Summary: AltaLink Management Ltd. has proposed a complete replacement of the existing 54L transmission line, within the existing right of way, as it is nearing the end of its life. The 54L transmission line runs from the Banff National Park east boundary to the AltaLink Banff 123s substation within the Town of Banff. The transmission line rebuild will improve electric reliability to Banff and Lake Louise, increase durability and improve fire resilience with weathered steel structures, and mitigate wildfire risks through removal of adjacent trees that are tall enough to fall on the line. Main proposed activities include vegetation removal, excavation, installation of bypass structures, replacement of transmission line, transportation of construction materials and equipment on site, and creating temporary staging areas for construction material delivery. The project is planned to start in 2026 and continue through 2032.

A complete version of the 54L rebuild draft detailed impact assessment can be found at: https://www.altalink.ca/project/54l/