Project Listing

AltaLink's existing 164L and 616L transmission lines were both constructed more than 60 years ago and portions of both lines are located in a high-risk fire area. We are proposing to rebuild portions of these lines to ensure that a safe and reliable supply of power is available for years to come.

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.

In order to ensure a safe distance between the existing 759L transmission line and the recently approved Central East Transfer-Out (CETO) transmission line, we need to modify structures near the Red Deer River for the 759L line.

AltaLink’s existing 799L transmission line is a single circuit 138 kilovolt (kV) line constructed in 1964. Portions of the line have reached the end of their lifecycle and need to be rebuilt to improve the safe and reliable operation of the line for years to come.

Additionally, the 799L transmission line was identified in AltaLink’s wildfire mitigation plan as a top ignition-causing line. Our wildfire mitigation plan includes strengthening our system and making proactive safety improvements so that it is less likely to contribute to wildfires. The proposed rebuild, along with other work on the 799L transmission line, will address the risks identified in the wildfire mitigation plan.

The existing 799L transmission line is located between the Sagitawah Substation, approximately six kilometres southeast of Whitecourt, and Entwistle. This proposed project involves rebuilding approximately 40 kilometres of the 77-kilometre transmission line.

The Alberta Electric System Operator (AESO) has requested that AltaLink modify portions of the existing 853L transmission line to increase electricity capacity and meet the growing demands for electricity in the area.

The 853L transmission line is a single circuit 138 kilovolt (kV) line, located approximately six kilometres west of the City of Brooks, in the County of Newell. To increase the electricity capacity on the 853L transmission line, the proposed project includes:

• replacing the conductor on an approximately 17.5 kilometre segment of the transmission line that starts at the West Brooks Substation (located in NW-28-18-15 W4M)
• replacing 13 structures and modifying two other structures along the 853L transmission line
• building two temporary transmission lines during construction to ensure customers in the area continue to receive reliable electricity service

To connect the TC Energy Berland River Project to the grid, AltaLink is proposing changes to its transmission system in the area.

AltaLink’s proposed project is located approximately 25 kilometres (km) south of the Town of Fox Creek.

AltaLink’s proposed project includes:

• building a new substation
• building approximately 55-60 km of new 138 kilovolt (kV) transmission line
• building a new 138 kV switching station
• installing new telecommunications equipment

The proposed Chapel Rock to Pincher Creek Area Transmission Development includes:

• A new 240 kV transmission line connecting a new proposed substation to be called the Chapel Rock Substation, to either the existing Goose Lake Substation or Castle Rock Ridge Substation, both located north of Pincher Creek. 
• The new proposed Chapel Rock Substation will connect the new transmission line with the existing 1201L transmission line, which is the Alberta/British Columbia intertie. 

Click here to see visual renderings of the proposed structure types and substation sites - updated August 10, 2020.

Cypress Renewable Energy Centre LP. (Cypress) has requested a connection to the transmission system for their proposed Cypress Wind Power Project. The Cypress Wind Power project will supply electricity to the grid through their proposed Woolchester Substation.

AltaLink is proposing to construct a new transmission line, to connect Cypress’ proposed Woolchester Substation to the electric system by connecting it to an existing AltaLink transmission line in the area. The proposed project is located approximately 18 km southeast of the City of Medicine Hat.

To connect Foothills Solar Limited Partnership’s (Foothills Solar) proposed Foothills Solar Farm project, AltaLink is proposing equipment upgrades at its Foothills Substation.

AltaLink’s proposed project is located at NW-8-19-27 W4 in Foothills County, approximately 11 kilometres northeast of the Town of High River. AltaLink is proposing to add one new 138 kilovolt (kV) circuit breaker and associated equipment to the existing Foothills Substation.

To connect the Greencells project to the grid, AltaLink’s proposed project includes building new transmission lines, relocating and modifying existing transmission lines and expanding the existing Empress 394S Substation. AltaLink's proposed project is located in Cypress County, in the vicinity of the Hamlet of McNeil.

hep’s proposed solar connection is located between Cypress County and Newell County in SE-7-16-10-W4, approximately 45 kilometres southeast of the City of Brooks.

AltaLink’s proposed project includes modifications to two existing transmission lines in the area.

To connect its project to the grid, TransAlta is constructing a new 138 kilovolt (kV) transmission line, located approximately 20 kilometres south of the Town of Taber. To accommodate the connection, AltaLink’s proposed project includes:

• modifying the existing 172EL transmission line at one of two potential locations
• installing a new underground fibre optic cable between one of two potential connection points and an existing substation in the area (called Suncor Hillridge), located in NW-36-8-18-W4M
• installing a new telecommunications tower at TransAlta’s Tempest Substation, located in SE-19-7-17-W4M

To connect its Riplinger Wind Project to the grid, TransAlta is constructing a new 240 kilovolt (kV) transmission line, located approximately eight kilometres east of the Town of Pincher Creek.

TransAlta is considering three connection points along AltaLink’s existing 955/956L transmission line. To accommodate this connection, AltaLink is proposing the following modifications to its transmission line at each of the three potential connection points. If approved, only one of these modifications will be constructed, based on the final connection point determined by TransAlta.