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    Southern Alberta Transmission Reinforcement - Chapel Rock-to-Pincher Creek Transmission Development

    With the evolving electricity landscape, the Alberta Electric System Operator (AESO) has worked diligently to ensure the previously approved transmission development in southwest Alberta continues to be the right plan for the transmission system for all Albertans. After extensive review, the AESO has determined transmission development in the Pincher Creek area continues to be required to efficiently integrate renewable generation onto Alberta’s grid.

    The need for this transmission reinforcement was approved by the Alberta Utilities Commission (AUC)  as part of the Southern Alberta Transmission Reinforcement Needs Identification Document (NID) on September 8, 2009. The NID, including all appendices, engagement material and amendments approved by the AUC are located on the Archived Material page.

    Current projects

    Chapel Rock-to-Pincher Creek transmission development newsletter

    AESO Presentation – AltaLink Community Workshops April 10 and 11, 2018

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    The Chapel Rock-to-Pincher Creek transmission development proposed to connect the Pincher Creek area to the existing transmission line 1201L, will also contribute to the restoration of the Alberta-British Columbia intertie to, or near to, its path rating. Please visit for more information on the Alberta-British Columbia Intertie Restoration project.

    Archived material

    Archived material

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    If you have any suggestions, questions or concerns please contact Stakeholder Relations at or 1-888-866-2959.