Milestone 3 Round 2 | Stakeholder Feedback | August 14 - September 11, 2026

Purpose

The Reliability Standards Sync Up Project aims to modernize the Alberta Reliability Standards. Following the Reliability Standards Discussion Group & Reliability Standards Sync Up Project Kick-Off session and the Stakeholder Feedback period, the AESO categorized the relevant Reliability Standards into two group: i) medium complexity; and ii) high complexity. On January 16, 2026, the AESO informed stakeholders that it will release a third package, titled Milestone 3, in March 2026. The AESO initially conducted consultation on the medium complexity standards from October 2, 2025 to December 19, 2025 with issuing responses to stakeholder feedback on February 20, 2026. 

The AESO is now seeking an additional round of written comments from Stakeholders on the proposed new, amended, and retired Milestone 3 Alberta Reliability Standards. The AESO values feedback and invites all interested Stakeholders to provide their comments via the Stakeholder Feedback Survey on or before September 11, 2026. All responses will be shared in their original format on AESO Engage.

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 "Provide Stakeholder Feedback" box below to provide your specific comments.
3. Please submit one completed Stakeholder Feedback survey per organization.
4. Stakeholder Feedback results will be posted on AESO Engage, in their original state.
5. Responses due on or before September 11, 2026.

Stakeholder Questions

1. Do you have any concerns that proposed IRO-010-AB-6, ISO Data and Information Specification and Collection (“IRO-010-AB-6”) may not support the public interest? If yes, please elaborate?
2. Do you have any concerns that proposed IRO-010-AB-6 may be technically deficient? If yes, please elaborate?
3. Do you have any concerns with the proposed implementation date of IRO-010-AB-6?
4. Do you have any concerns with the proposed retirement of MOD-010 & 012-AB-0, Steady-State and Dynamic Data for Transmission System Modeling and Simulation?
5. Do you have any concerns that proposed MOD-025-AB-2, Verification and Data Reporting of Generator Real and Reactive Power Capability and Synchronous Condenser Reactive Power Capability (“MOD-025-AB-2”) may not support the public interest? If yes, please elaborate?
6. Do you have any concerns that proposed MOD-025-AB-2 may be technically deficient? If yes, please elaborate?
7. Do you have any concerns with the proposed implementation date of MOD-025-AB-2?
8. Do you have any concerns that proposed MOD-026-AB-2, Verification and Validation of Dynamic Models and Data (“MOD-026-AB-2”) may not support the public interest? If yes, please elaborate?
9. Do you have any concerns that proposed MOD-026-AB-2 may be technically deficient? If yes, please elaborate?
10. Do you have any concerns with the proposed implementation date of MOD-026-AB-2?
11. Do you have any concerns that proposed MOD-032-AB-2, Data for Power System Modeling and Analysis (“MOD-032-AB-2”) may not support the public interest? If yes, please elaborate?
12. Do you have any concerns that proposed MOD-032-AB-2 may be technically deficient? If yes, please elaborate?
13. Do you have any concerns with the proposed implementation date of MOD-032-AB-2?
14. Do you have any concerns that proposed MOD-033-AB-3, Steady-State and Dynamic System Model Validation (“MOD-033-AB-3”) may not support the public interest? If yes, please elaborate?
15. Do you have any concerns that proposed MOD-033-AB-3 may be technically deficient? If yes, please elaborate?
16. Do you have any concerns with the proposed implementation date of MOD-033-AB-3?
17. Do you have any concerns with the proposed retirement of PRC-001-AB3-1.1(ii), Protection System Coordination?
18. Do you have any concerns that proposed TOP-003-AB-8, Operator of Transmission Facility and ISO Data and Information Specification and Collection (“TOP-003-AB-8”) may not support the public interest? If yes, please elaborate?
19. Do you have any concerns that proposed TOP-003-AB-8 may be technically deficient? If yes, please elaborate?
20. Do you have any concerns with the proposed implementation date of TOP-003-AB-8?
21. Do you have any concerns that proposed MOD-PLAN-AB-1, Implementation Plan for Modelling, Data, and Analysis Standards (“MOD-PLAN-AB-1”) may not support the public interest? If yes, please elaborate?
22. Do you have any concerns that proposed MOD-PLAN-AB-1 may be technically deficient? If yes, please elaborate?
23. Do you have any concerns with the proposed implementation date of MOD-PLAN-AB-1?
24. Do you have any questions, comments, or concerns related to the draft proposed new and amended defined terms for the AESO’s Consolidated Authoritative Document Glossary? If so, please elaborate.