54L Transmission Line Rebuild

AltaLink’s existing 54L transmission line was constructed in 1943. This transmission line has reached the end of its lifecycle. We are proposing to rebuild this line to ensure that a safe and reliable supply of power is available for years to come. 

The existing 54L transmission line is a single circuit 138 kilovolt (kV) line that is located in Canmore and Banff National Park. This proposed project involves rebuilding approximately eight kilometres of the line that runs between the Canmore Substation and the boundary of Banff National Park. Planning for the rebuild of the portion of the line in the park is in the early stages.

AltaLink hosted a virtual information session to answer questions and provide more information on the proposed project in November 2021. If you were unable to attend this session, you can watch a recording of it here.

Geotechnical surveys: September and October 2023

Between September 18 and October 13, AltaLink is conducting geotechnical surveys at various locations in and near Canmore, Harvie Heights and Banff. People in the area may see or hear AltaLink crews and vehicles in the area during this time.

To allow crews to safely perform the work and transport equipment to site, there are some temporary closures and speed reductions that we want you to be aware of.

Temporary lane closure and speed reductions on Highway 1: October 2 and 3

On Highway 1, approximately six kilometres southeast of the Town of Banff, one westbound lane will be temporarily closed, and intermittent speed reductions will be in place:

  • October 2 and 3 between 7 a.m. and 5 p.m. (weather dependent)
  • The speed limit will be reduced to 70 km/h while crews are working and 50 km/h while equipment is being moved

Partial parking lot closure at Johnson Lake: September 21

On September 21, between 7 a.m. and 5 p.m., a portion of the parking lot at Johnson Lake in Banff National Park will be closed to accommodate equipment and survey activities. The portion of parking lot closed will be blocked off and well-marked. There are no other impacts at Johnson Lake.

Project Status:

Anticipated Project Schedule

TBD Start Construction
TBD Complete Construction

Although we attempt to follow the anticipated project schedule, it is subject to change. We will continue to provide you with updated schedule information as the project progresses.

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