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    View all stakeholder engagements

    Bulk and Regional Tariff Design

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

    Update: Recommencement of Stakeholder Engagement Work in September, 2020

    The AESO is recommencing the Bulk and Regional Tariff Design stakeholder engagement work this fall with an engagement session planned for late September. A modified engagement plan and session details will be shared in early September.

    We acknowledge that it was important and necessary to pause the Bulk and Regional Tariff Design engagement work to support our load stakeholders that were under a tremendous amount of new stress due to the COVID-19 pandemic and not an appropriate time to ask for their attention on this significant topic. We have determined it now critical to recommence the engagement work to ensure we can continue to progress the rate design development for bulk and regional cost recovery and develop a Tariff Application for filing on or before March 31, 2021 with the Alberta Utilities Commission.

    This recommencement of the Bulk and Regional Tariff Design stakeholder engagement work is in alignment with requests from our load stakeholders. 


    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.


    High-level overview of the proposed process:

    • 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
    • Session 3<br>Oct. 22, 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. 2, 2020

      Session objectives 

      • Clarify and refine the preferred rate design, including energy storage treatment
      • Discuss and evaluate mitigation options
      • Begin to discuss implementation considerations
    • Session 5<br>Jan. 28, 2021

      Session objectives

      • Present and collect feedback on the emerging application (to be filed by March 31, 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

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