Construction is complete on the 150L Transmission Line Rebuild, and we want to thank you for your patience and understanding. You helped us ensure that a safe and reliable supply of power is available for years to come.

Project background

Built in 1956, AltaLink’s existing 150L transmission line has reached the end of its lifecycle and will be rebuilt to ensure a reliable supply of power is available for years to come. The line runs from the west end of Calgary to the Stoney Nakoda Reserve in Rocky View County.

The rebuild includes:

• rebuilding 27 kilometres of 138 kilovolt transmission line
• replacing the existing wooden H-frame structures with primarily steel monopole structures. Wood structures may be used in certain locations.
• removing and salvaging the existing transmission line