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    North Lethbridge 370S Substation Modification Project

    Recent studies have shown the existing transmission system in the North Lethbridge area needs to be reconfigured to continue to provide a reliable supply of electricity to the City of Lethbridge. The AESO is proposing modifications to the existing North Lethbridge 370S substation, which include the addition of one 138 (kilovolt) kV circuit breaker. Circuit breakers are electrical switches inside a substation that protect substation equipment. Minor modifications of associated equipment are also required.

    Key documents:

    Notice of intent to consider for approval under the AESO's Abbreviated Needs Approval Process

    The AESO intends to consider the need for the North Lethbridge 370S Substation Modification for approval under Section 501.3 of the ISO rules, Abbreviated Needs Approval Process, (ANAP Rule) on or after August 7, 2021.

    Notice of Intention to Consider the Need for the North Lethbridge 370S Substation Modification Project for Approval under the AESO’s Abbreviated Needs Approval Process [Posted July 7, 2021]

    Contact us

    Please contact us directly with questions or comments about the need for this transmission reconfiguration at stakeholder.relations@aeso.ca or 1-888-866-2959.

    Latest updates

    • Jul. 7, 2021 Notice of Intention to Consider ANAP: North Lethbridge 370S Substation Modification Project
    • Mar. 24, 2021 North Lethbridge 370S Substation Modification Project