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Projects > ENMAX Substation No. 1 Replacement Project


ENMAX Substation No. 1 Replacement Project

Project Overview

ENMAX Power Corporation (ENMAX Power) is replacing the existing ENMAX Substation No. 1, located at 738 9 Avenue SW. Originally built in 1912 to power streetlights and the streetcar rail system in downtown Calgary, the new substation is required to ensure the reliability and integrity of ENMAX’s transmission system, and to ensure the reliable supply of electricity to the City of Calgary.

The new ENMAX Substation No. 1 will be built on a site directly west of the existing substation, on the northwest corner, at the 9 Avenue SW and 7 Street SW. In addition to constructing the new substation, ENMAX Power will need to excavate sections of 9 Avenue SW, 7 Street SW, and 8 Street SW to relocate, install and replace transmission lines, duct banks and manholes.


Construction Timeline

  • Installation of safety fencing took place on March 31, 2021.
  • Construction is scheduled to begin on May 2, 2022, and will continue into 2025.
  • Decommissioning of the existing substation is targeted to be completed by Q2 2025.

Communication efforts are ongoing and will continue through all phases of the project, to ensure timely updates are provided to those impacted.

Important Documents

Contact Us

If you have any questions or wish to discuss this project, please contact us:

Power Customer Relations



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