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    View all stakeholder engagements

    Bulk and Regional Tariff Design


    Since mid-2018 the AESO has engaged with stakeholders through the Transmission Design Advisory Group (TDAG) on potential revisions to the currently approved 12-coincident peak (12 CP) methodology for the recovery of bulk and regional transmission costs. In January 2020, the AESO finalized and posted its Stakeholder Engagement Framework (Framework) on the AESO’s website. In alignment with the Framework and in response to feedback that the AESO has received from the TDAG, the AESO is now transitioning the prior members-only TDAG engagement to broad industry stakeholder engagement. The TDAG members have been notified of this change. In addition, the Transmission Tariff Working Group (TTWG) associated with TDAG has also been disbanded as of January 2020.

    Engagement approach

    The AESO intends to:

    • Engage with stakeholders to allow stakeholders’ needs and interests to be consistently, transparently and meaningfully considered in the development of a rate design proposal for bulk and regional cost recovery;
    • Engage with stakeholders regarding the objectives to be examined and evaluated in the development of a rate design proposal for bulk and regional cost recovery;
    • Supply stakeholders with analysis tools for bulk and regional cost recovery impact analysis;
    • Seek and identify for the AUC areas of agreement and disagreement in the AESO rate design proposal to accelerate the regulatory approval process; and
    • File with the AUC an application for bulk and regional rate design by June 2021.

    Revised stakeholder engagement and filing schedule

    • Session 1<br>Mar. 13, 2020

       Session objectives

      • Present rate design options for bulk and regional cost recovery with rate objectives assessment
      • Provide rate design analysis tools
      • Review, respond to clarifying questions and collect initial input on options
    • Session 2<br>Sept. 24, 2020

      Session objectives

      • Review and gain acceptance on process and approach to complete a rate design
      • Understand current state rate design
      • Reconfirm tariff rate design objectives and balance of trade-offs
      • Understand rate design bookends
      • Identify initial implications of rate design bookends
      • Understand energy storage treatment options and considerations
      • Provide technical clarity around rate design bookends
    • Tech. Session<br>Oct. 14, 2020

      Session objectives

      • Ensure stakeholders understand the mechanics of the rate bookends;
      • Enable stakeholders to evaluate the impacts of the rate bookends on their sites;
      • Assist stakeholders in assessing the materiality of changes to their invoices; and
      • Ensure stakeholders are equipped to present and/or understand rate design options at the Oct. 22, 2020 stakeholder session
    • Session 3<br>Nov. 5, 2020

      Session objectives

      • Stakeholders to present and discuss alternative rate design options, including energy storage options and implications
      • Understand which rate design options stakeholders support and why
    • Session 4 <br>Dec. 10, 2020

      Session objectives

      • Understand common themes across stakeholder rate design proposals and the AESO rate design bookends
      • Understand areas of agreement and disagreement and why
      • Introduce mitigation conversation to foster/build understanding 
    • Session 5<br>Feb. 25, 2021

      Session objectives

      • Present the preferred rate design, including energy storage treatment
      • Discuss and evaluate mitigation options
      • Begin to discuss implementation considerations
    • Session 6<br>April 15, 2021

      Session objectives

      • Present and collect feedback on the emerging application (to be filed by June 2021)
      • Share and discuss the implications of the rate design proposal and mitigations
      • Understand outstanding stakeholder concerns


    Note: Session dates once finalized will be shared with stakeholders. Additionally, stakeholders will have opportunities to provide written feedback through comment matrices issued at certain points in the process.

    Out-of-scope for this engagement

    The following topics are out-of-scope and will not be discussed as part of the Bulk and Regional Tariff Design engagement sessions:

    • Participant-Related Costs for DFOs (Substation Fraction) and DFO Cost Flow-Through Technical Session(s)
    • 2020 Rates Update
    • Other 2018 GTA Decision and Corresponding Compliance Filing Items

    For information on the Tariff Design Advisory Group (TDAG) which was disbanded in January, 2020 please click here.

    If you have any other questions, please contact and subscribe to our stakeholder newsletter for updates.