2026 Baseline Schedule and IT Release Schedule for System and Document Changes Now Available
September 25, 2025
The 2026 Baseline Schedule for the publication of new and revised IESO technical interface documents, market manuals, and baseline plans is now available.
2026 Information Technology (IT) Release Schedule for planned changes to IESO systems is also now available.
Changes to the market rules, processes, IT systems, and other supporting documents used to interact in the IESO-administered markets are managed using a clearly defined Baseline and IT Release process. Market Participants are advised to review the Schedules to ensure they are aware of planned changes.