TRP & Supply SAS

Important Dates & Materials

November 26 | TRP Methodology feedback due

October 20 | TRP & Amendments for the AESO Connection Process Workshop Presentation posted

  • October 27 | "Immediate Next Steps" slide updated

Purpose

To develop (with stakeholder input), administer and execute a Transmission Reinforcement Payment (TRP) that effectively functions with the transmission regulation to obtain a more efficient transmission system

TRP & Supply SAS High-Level Engagement Schedule

Click on image to expand


Scope

  • Methodology for calculating TRP rates – granularity of rate, soft cap, timing, qualitative/quantitative assessment, technology, proximity to transmission
  • Changes to terms and conditions of the tariff – changes required to align with regulation, additional enhancements for efficiency and clarity, process to collect TRP, timing, and consequences
  • Treatment of existing refunds held by AESO – status quo, accelerated refund process. Including transition period
  • What Supply Transmission Service (STS) contract capacity means
  • How Optimal Transmission Planning (OTP) and TRP impact System Access Service (SAS)

The following topics are out of scope for this engagement:

  • OTP Design
  • REM Design

Important Dates & Materials

November 26 | TRP Methodology feedback due

October 20 | TRP & Amendments for the AESO Connection Process Workshop Presentation posted

  • October 27 | "Immediate Next Steps" slide updated

Purpose

To develop (with stakeholder input), administer and execute a Transmission Reinforcement Payment (TRP) that effectively functions with the transmission regulation to obtain a more efficient transmission system

TRP & Supply SAS High-Level Engagement Schedule

Click on image to expand


Scope

  • Methodology for calculating TRP rates – granularity of rate, soft cap, timing, qualitative/quantitative assessment, technology, proximity to transmission
  • Changes to terms and conditions of the tariff – changes required to align with regulation, additional enhancements for efficiency and clarity, process to collect TRP, timing, and consequences
  • Treatment of existing refunds held by AESO – status quo, accelerated refund process. Including transition period
  • What Supply Transmission Service (STS) contract capacity means
  • How Optimal Transmission Planning (OTP) and TRP impact System Access Service (SAS)

The following topics are out of scope for this engagement:

  • OTP Design
  • REM Design

  • TRP Methodology | Nov. 4 - 26, 2025

    Purpose

    Following stakeholder discussions during the October 22 & 23 TRP & Amendments for the AESO Connection Process workshops, we invite interested stakeholders to provide comments by November 26, 2025.

    Instructions

    1. To submit your responses, you will need to be registered and signed in on the AESO Engage platform. 
    2. Please click on the "Submit Feedback Here" box below to begin the survey and provide your specific comments. 
    3. Please submit one completed survey per organization. 
    4. All responses will be shared on AESO Engage. 
    5. Responses are due by Nov. 26, 2025.

    Feedback Questions

    TRP Base Rate

    The following questions are about TRP base rate options. Please provide rationale for your responses.

    1. Certain base rate options like using the last approved NID or the near-term portfolio from OTP/LTP may lead to large variability in the base rate. Given the AESO’s preference to update the base rate prior to every Cluster, how important is it to have a stable or more consistent base rate between Clusters?

    TRP Rate Formula Scalars

    The AESO presented a TRP Rate formula that included individual scalars as percentages that would then be multiplied together. The following questions are related to the scalars used. Please provide rationale for your responses.

    2. For the technical characteristics scalar, the AESO presented a demand for transmission capacity option based on the correlation between generation output by technology type and generation output of the planning area (based on flows onto the transmission system). How would you do this calculation differently, and why? 

    3. How important is it for the base rate to accurately reflect future transmission reinforcement costs as opposed to historical or average costs?  

    4. Is your preference to use individual scalars, a single weighted average scalar or something else entirely? 

    5. Is it appropriate for the scalars to go to 0%? If no, what would you suggest as a minimum level? 

    6. Should the AESO consider different or multiple TRP rates within a Cluster that reflects the changing available capacity in an area if multiple projects are proposing to connect at that same location? If yes, how should the AESO decide who gets the lower rate? 

    Rate STS

    The following questions are about Rate STS. Please provide rationale for your responses.

    7. What should STS contract capacity be based on, expected flow, maximum flow or something else?  

    8. What should the consequences be for going over STS contract capacity and what should that threshold be for going over (i.e. once in a year, 5% of time, over by a certain amount, etc.)? 


    Submit Feedback Here
  • CLOSED: This feedback request has concluded.

    Supplemental Insights on TRP (optional) | May 21 - 30, 2025

    Purpose

    During Sprint 1 of OTP & TRP, we received some feedback that stakeholders had a better understanding of OTP, which shifted their TRP perspectives and how it integrates with OTP. Therefore, we invite those wanting to provide supplemental TRP written feedback to do so by May 30. This information will assist us in the development of options and materials for the second Sprint at the end of June.

    Instructions

    1. To submit your feedback, you will need to be registered and signed in on the AESO Engage platform.
    2. Please click on the "Complete Stakeholder Feedback" box below to provide your specific comments.
    3. Please submit one Stakeholder Feedback per organization.
    4. Stakeholder Feedback results will be posted on AESO Engage, in their original state.
    5. Responses due on or before May 30, 2025.

    Questions

    1. Do you have any supplemental feedback on the integration of TRP into OTP?
    2. If you wish to provide a formatted version of your response, please do so here.
  • CLOSED: This feedback request has concluded.

    OTP & TRP Alternative Framework Proposal Form | Apr. 30 - May 30, 2025

    Purpose

    The AESO has identified guidelines and questions for stakeholders to consider and respond to, following the posting of Stakeholder Alternative Framework Proposals, which support further OTP framework design development through meaningful engagement. We value stakeholder input and invite all interested parties to provide their Stakeholder Alternative Framework Proposals feedback via the following form by May 30, 2025. Please provide specific examples with your responses.

    Instructions

    1. Please fill out the sections below as indicated
    2. Only one completed feedback form will be accepted per stakeholder
    3. To upload your completed feedback form you will need to be registered and signed in on the AESO Engage platform
    4. When completed, click on the "Submit Stakeholder Feedback" box below to upload your completed feedback form
    5. All responses will be shared on AESO Engage in their original format (responses due May 30, 2025)


  • CLOSED: This request has concluded.

    Stakeholder Proposals on the OTP & TRP Framework | April 16 - May 5, 2025

    Purpose

    An important piece of the first sprint, which will run from May 12 - 15, 2025, will be to hear stakeholders' perspectives and proposals on what they think the OTP & TRP framework could look like.

    The intent of these presentations is to broaden the initial starting points and hear different points of view, help identify misalignment early and collaboratively shape the OTP/TRP design.

    Proposal Parameters

    All proposals must align with the OTP engagement development objective and adhere to its principles. Specifically, each proposal should:

    1. Demonstrate alignment with the OTP Framework's Objective & Principles

    All proposals should demonstrate how the alternative supports in the development of economically-efficient transmission projects.

    Your stated assumptions on the role of TRP within the framework.

    2. Promote Transparency

    All presentations should clearly outline all methods, assumptions, and rationale leveraged in its development.

    All assumptions used in the proposal's design or assessment should be consistent with those already established within REM and other AESO initiatives

    3. Ensure Reasonable Implementation

    Topics and perspectives presented should be compatible, functionally aligned, and feasible with the REM and other initiatives that work within the Alberta Market. 

    Instructions

    1. Stakeholder proposals are limited to 30-minutes of presenting and 15 minutes Q&A.
    2. You have the opportunity to bring a subject matter expert from your organization to assist with presenting your proposal.
    3. To submit your proposal, you will need to be registered and signed in on the AESO Engage platform. 
    4. Click on the "Submit Stakeholder Proposal" box below to submit proposals. 
    5. One proposal per organization.
    6. All proposals will be shared on AESO Engage (unless otherwise requested).
    7. Proposals are due on or before May 5, 2025.
Page last updated: 03 Nov 2025, 06:23 PM