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ENMAX Power Corporation

9.83L HERITAGE DRIVE Transmission Line Alteration Project


ENMAX Power Corporation (ENMAX Power) owns and operates transmission line 9.83 (9.83L), which provides electrical services to residential and commercial properties in Calgary’s Fairview and Acadia communities and surrounding areas. 9.83L is a 138-kilovolt transmission line that runs west from ENMAX No. 9 Substation (1010 Glenmore Trail SE), continues south to Blackfoot Trail, and west onto Heritage Drive, where it connects to ENMAX No. 43 Substation (498 Heritage Dr. SE).​


​ENMAX Power intends to apply to the Alberta Utilities Commission (AUC) for approval to alter 9.83L by removing two existing wood poles and replacing them with two wood poles of a greater height, within the existing alignment, near the intersection of Heritage Drive SE and Fairmount Drive SE (the Project).

The proposed pole replacements will increase the height of the 9.83L conductors, which will allow ENMAX Power to comply with clearance requirements between 9.83L and a traffic light in the area. The Project will ensure the continued safe, reliable and efficient operation of ENMAX Power’s electrical system.


ENMAX Power plans to file a Checklist Application with the AUC in Q4 2023. Subject to receiving approvals and the procurement of materials, construction is anticipated to begin in Q1 2024. Construction is anticipated to take approximately two weeks with a proposed in-service date in Q2 2024. We encourage stakeholders to consult the webpage for the most up-to-date construction information.​

Contact Us​​

Your input is valuable to us. We will ensure you get answers to your questions and your concerns are understood. For more inform​ation about the proposed Project, please contact:

Phone: 403-514-1471
E-mail: stakeholderrelations@enmax.com
Website: enmax.com/HeritageDriveSE

To learn more about the regulatory process, please contact:


Phone: 403-310-4282
E-mail: info@auc.ab.ca
Website: www.auc.ab.ca​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

Customers are free to purchase natural gas services or electricity services from a retailer of their choice. For a list of retailers, visit ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).