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Pending Changes - Documents

The list below provides advance notice of pending changes to the market rules, market manuals, technical interfaces documentation or other items that define the operation of the IESO-administered market. For changes that are minor, the listing will identify the document that is changing and a description of the revisions, but a link to the altered document may not be included.

Comments on the design and implementation concerns can be sent to pending.changes@ieso.ca. This feedback will be taken into account during the baseline schedule.

Details of all of the documents being revised for the current Baseline (and the next Baseline if available) can be found below.

See Document Library for previous Baseline Plans.

Pending Changes - Documents

Item Last Updated Comments Due Target Implementation
MM1.5 – Market Registration

In section 5.1.3 changed “facility” to “resource” where required to be consistent with the market rules.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM4.1: Submission of Dispatch Data in the Physical Markets

Updated references to reflect the renaming of tie-line connection and Tie Point ID.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM4.3 - Operation of the Real-Time Market

Revise the single reference to the HDR standby notice price threshold in Section 5.2.
25-Jun-2026 09-Jul-2026 To be issued in advance of Baseline 56.0 on July 14, 2026
MM5.5 – IESO-Administered Markets Settlement Amounts

Changing the definition for ORCSB to describe the concept of inaccessible operating reserve.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
Renewed – Charge Types and Equations

Change to Renewable Generation Connection Compensation (CT1463).
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM7.1 – IESO-Controlled Grid Operating Procedures

In Appendix B, Table 5-1 added new step (#3) to EOSCA List for Scheduling Peak Perks Activation.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM7.2 – Near-Term Assessments and Reports

In Appendix D (Table D-2) updated reference to reflect the renaming of tie-line connection.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM7.4 – IESO Grid Operating Policies

In Appendix A.1.1, updated item (ii) to remove inconsistency between NPCC Directory #1 (Table 3) and MM7.4 Appendix A.1.1.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
MM14.2 – Reference Level and Reference Quantity Procedures

Updates to section 10.1 and 10.3 based on feedback from Market Participants.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
FORM128 - CAA Application Form

Added some IBR models for FACTS devices page.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026
SPEC467 - Retrofit LDC API Specification

This document is replacing SPEC-188. This document outlines the new LDC API in Retrofit based on eDSM contracts for marketing and outreach activities.
08-Jul-2026 07-Aug-2026 To be issued under Baseline 56.0 on September 9, 2026