Preliminary Release Plan for Changes to the IESO’s IT Systems Posted for Review
November 20, 2025
The market-facing preliminary release plan, has been posted under R55.0 of the IT Release Schedule. There are two changes included in this release:
- ID106846: External Report Changes - Adequacy and Realtime Ontario Zonal Price Reports
- ID120083: External Report Changes - Publishing New DAM Pass 1 Local Marginal Price Reports (ENGY and OR) for Interties
More information on this change is available in the Preliminary Release Plan. Feedback can be sent to pending.changes@ieso.ca by December 3.