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Downtown Calgary
Transmission Reinforcement Project

Project Overview

The demand for power is increasing as Calgary continues to grow. The Alberta Electric System Operator (AESO) has determined that the existing transmission system in downtown Calgary can become overloaded under certain conditions. Overloaded transmission lines reduce the reliability of your power supply and increase the likelihood of interruptions in power supplied to homes and businesses. The AESO has therefore identified the need for transmission reinforcement into the downtown area.

On November 18, 2015, the AESO filed its Needs Identification Document (NID) for Transmission System Reinforcement in Downtown Calgary with the Alberta Utilities Commission (AUC). On June 1, 2016, the AUC approved the AESO’s NID.

To meet this need ENMAX Power Corporation (ENMAX) is proposing to build a new 138 kV transmission line between ENMAX No. 2 Substation located at 3120 – 9 Street SE, and ENMAX No. 8 Substation located at 903 – 4 Avenue SW.

Important Documents

Project status

ENMAX filed an application with the Alberta Utilities Commission (AUC) for the proposed work on November 30, 2017.

On May 31, 2018 the AUC issued a Notice of Hearing. The Hearing will be held on August 15, 2018 to review the application and submissions received.

For information on the AUC and it’s processes as well as Proceeding 23157, click here.


Email: Stakeholder Relations
Phone: 403-514-1471

All customers are free to purchase natural gas services from the default supply provider or from a retailer of their choice and to purchase electricity services from the regulated rate provider or from a retailer of their choice. The delivery of natural gas and electricity to you is not affected by your choice. If you change who you purchase natural gas services or electricity services from, you will continue receiving natural gas and electricity from the distribution company in your service area. For a current list of retailers you may choose from, visit www.ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).

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