Amendments to ID #2012-006R, Adequacy, Supply Shortfall and Energy Emergency Alerts

Important Dates & Materials

July 31 | Stakeholder Feedback due (submit via survey below)

July 28 | Stakeholder Engagement Session (registration details will be announced shortly)

June 26 | Materials posted:

June 26 | Stakeholder Update

On June 26, 2026, the AESO posted a Letter of Notice regarding amendments to ID #2021-006R and is providing Stakeholders with an opportunity to provide feedback on its proposed amendments. More information related to this session and registration details will be announced on AESO Engage when available.

Purpose

The AESO is proposing amendments to ID #2012-006R, Adequacy, Supply Shortfall and Energy Emergency Alerts (ID #2012-006R) to amend some of the variables used in the methodologies that the AESO relies upon to assess and report on the long-term adequacy of supply under subsection 4 of Section 202.6 of the ISO rules, Adequacy of Supply. The methodologies and variables are set out in Appendix 3 of ID #2012-006R, Calculations and Methodologies regarding Supply Adequacy (“Appendix 3”).

Engagement Plan and Process

The AESO recognizes that Stakeholders require information and context in order to provide meaningful feedback on the proposed amendments to Appendix 3. In addition to posting a blacklined and clean copy of the proposed amendments to Appendix 3 we plan to do the following:

  • The AESO is providing Stakeholders an opportunity to provide written feedback on the proposed amendments to Appendix 3, with comments due on July 31, 2026.
  • Prior to the close of the comment period, the AESO will host a Stakeholder engagement session on July 28, 2026 regarding the proposed amendments to Appendix 3.
  • The AESO will review Stakeholder feedback and consider whether revisions are required to the proposed amendments to Appendix 3. Additional engagement with Stakeholders may be scheduled if the AESO requires additional information or clarity.
  • Subject to Stakeholder feedback, the AESO expects that the proposed amendments to Appendix 3 will take effect on August 26, 2026.

Important Dates & Materials

July 31 | Stakeholder Feedback due (submit via survey below)

July 28 | Stakeholder Engagement Session (registration details will be announced shortly)

June 26 | Materials posted:

June 26 | Stakeholder Update

On June 26, 2026, the AESO posted a Letter of Notice regarding amendments to ID #2021-006R and is providing Stakeholders with an opportunity to provide feedback on its proposed amendments. More information related to this session and registration details will be announced on AESO Engage when available.

Purpose

The AESO is proposing amendments to ID #2012-006R, Adequacy, Supply Shortfall and Energy Emergency Alerts (ID #2012-006R) to amend some of the variables used in the methodologies that the AESO relies upon to assess and report on the long-term adequacy of supply under subsection 4 of Section 202.6 of the ISO rules, Adequacy of Supply. The methodologies and variables are set out in Appendix 3 of ID #2012-006R, Calculations and Methodologies regarding Supply Adequacy (“Appendix 3”).

Engagement Plan and Process

The AESO recognizes that Stakeholders require information and context in order to provide meaningful feedback on the proposed amendments to Appendix 3. In addition to posting a blacklined and clean copy of the proposed amendments to Appendix 3 we plan to do the following:

  • The AESO is providing Stakeholders an opportunity to provide written feedback on the proposed amendments to Appendix 3, with comments due on July 31, 2026.
  • Prior to the close of the comment period, the AESO will host a Stakeholder engagement session on July 28, 2026 regarding the proposed amendments to Appendix 3.
  • The AESO will review Stakeholder feedback and consider whether revisions are required to the proposed amendments to Appendix 3. Additional engagement with Stakeholders may be scheduled if the AESO requires additional information or clarity.
  • Subject to Stakeholder feedback, the AESO expects that the proposed amendments to Appendix 3 will take effect on August 26, 2026.

  • Written Feedback | June 26 – July 31, 2026

    The AESO is proposing amendments to ID #2012-006R, Adequacy, Supply Shortfall and Energy Emergency Alerts (ID #2012-006R) to amend some of the variables used in the methodologies that the AESO relies upon to assess and report on the long-term adequacy of supply under subsection 4 of Section 202.6 of the ISO rules, Adequacy of Supply. The methodologies and variables are set out in Appendix 3 of ID #2012-006R, Calculations and Methodologies regarding Supply Adequacy (“Appendix 3”). 

    The AESO is providing Stakeholders with an opportunity to provide feedback on its proposed amendments to Appendix 3. A copy of the AESO’s proposed amendments to ID #2021-006R, together with the Letter of Notice, was posted on the AESO website on June 26, 2026. The comment period for Stakeholder feedback will remain open on AESO Engage until July 31, 2026.

    Please review Letter of Notice regarding amendments to ID #2021-006R prior to providing feedback, which can be found in the AESO Materials section.

    Instructions 

    1. To submit your responses, you must be registered and signed in on the AESO Engage platform. 
    2. Please click on the "Submit Stakeholder Feedback" 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 July 31, 2026. 


    Questions

    1. Do you have comments on the proposed amendments to subsection 4(a) of Appendix 3: metric listing Alberta electrical generation projects and retirements? 
    2. Do you have comments on the proposed amendments to subsection 4(b) of Appendix 3: 5-year forecast reserve margin metric? 
    3. Do you have comments on the proposed amendments to subsection 4(c) of Appendix 3: supply cushion metric which provides a 2-year forecast of available daily generation capacity and peak demand?
    4. Do you have comments on the proposed amendments to subsection 4(d) of Appendix 3: 2-year probability of supply adequacy shortfall metric? 


    Note: We recommend that responses are prepared in a word document (or some other document processing system) and when ready to submit, the answers are copied and pasted for each question back into the survey response comment box. The formatting (numbering/bullets) may not appear as drafted in the survey comment response; however, the formatting is retained when the responses are exported by the AESO. 

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Page last updated: 26 Jun 2026, 04:22 PM