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    SS-7 Substation Upgrade

    ENMAX Power Corporation (ENMAX) has applied to the AESO for transmission system access to reliably serve growing demand for electricity in the Calgary area. ENMAX’s request can be met by the following solution:

    • Upgrade the existing SS-7 substation, including replacing two 138/25 kV transformers and adding a 138 kV circuit breaker.
    • Add or modify associated equipment as required for the above transmission developments. 

    Need overview

    Need for the SS-7 Substation Upgrade in the City of Calgary [Posted: May 18, 2017]

    Approval of System Access Service Request

    The AESO approved this request for transmission system access under our abbreviated needs approval process (ANAP). The process is outlined in section 501.3 of the ISO rules, Abbreviated Needs Approval Process.

    AESO Approval Letter -ENMAX SS-7 Substation 13825kV Transformer Upgrade (October 10, 2017)

    Supporting Documents:

    Contact us

    We appreciate your views, both on the need for transmission system development and proposed transmission plans. If you have any questions or comments, please contact us directly.

    AESO Stakeholder Relations

    Latest updates

    • Oct. 12, 2017 SS-7 Substation Upgrade - Approval of the Need for Transmission Development in the Calgary area
    • May. 18, 2017 Need for the SS-7 Substation Upgrade in the City of Calgary