Strathcona Substation capacity increase and transmission line

Strathcona Substation capacity increase and transmission line

The Alberta Utilities Commission is currently considering an application for a substation upgrade and transmission line in Edmonton


The Alberta Utilities Commission is currently considering applications from EPCOR Distribution & Transmission Inc. for the Strathcona Area Transmission Upgrade to build a new transmission line east of Gateway Boulevard near the Whitemud Freeway and upgrade the Dome substation in Edmonton.

The Alberta Electric System Operator has indicated in its needs identification document that the project is needed to serve growth in the area. The Alberta Utilities Commission is considering the need for the upgrade the Dome 665S Substation and the Strathcona Substation Enhancement project which includes a new 72-kilovolt (kV) transmission line.

The AUC issued a notice of application for the Strathcona Substation capacity increase and transmission line on July 17, 2018.  

EPCOR Distribution & Transmission Inc. has applied to construct a new four to five kilometre 72-kV overhead and partial underground transmission line, discontinue the use of existing 72-kV transmission line 72RS5 located along 103 Street and alter the Dome 665S Substation by expanding the fenceline near Parsons Road. The new transmission line 72DS26 would connect the Dome 665S to the Strathcona Substation which would either follow primarily along 99 Street or 97 Street with several route variants considered as potential options for approval.

The new line would need to go underground to cross three existing 240-kV transmission lines south of 31 Avenue on Parsons Road that are owned by AltaLink Management Ltd. EPCOR Distribution & Transmission Inc. applied to construct a new fibre optic line, designated as FO-158, on the same structures and same route as the new transmission line 72DS26. The proposed routes are entirely located within the city of Edmonton’s road allowance and no new rights-of-way are expected to be required.

Find out how the Commission has dealt with certain issues in previously issued transmission decisions.


The eFiling System should be accessed to view the applications and the other documents the AUC will be considering in this proceeding. The system is also used to file submissions and evidence to participate in the proceeding.

To create an account, select "New account" and follow the steps to create a user ID and password. If you have any questions about how to use the system please contact us at or 310-4AUC.

Documents being considered in this proceeding can be found in the eFiling System (which requires log in). Once you have logged in, enter 23641 in the "go to" section at the top left corner of your screen.

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Proceeding 23641                 Register

Application status: complete

Decision issued: 23641-D01-2019

 Hearing: December 10, 2018, commencing at 9 a.m.

Location: Holiday Inn Conference Centre Edmonton South 

Information session: August 14, 2018, at 6 p.m.


 AUC contact: Trevor Richards

403-592-4469 or   


 Alberta Electric Systems Operator contact:

Brenda J. Hill 

403-539-2850 or


 EPCOR Distribution & Transmission Inc. contact:

Jennifer McEwen 

780-412-4040 or


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