South and Central Bulk Data Tables and Feedback Form Update
December 22, 2025
South and Central Bulk Data Tables and Feedback Form
As a follow-up to the September 30 Quarterly Bulk Planning webinar, the IESO shared details of the portfolios of transmission investments under consideration, generation assumptions for each scenario in the energy model, the sub-zonal load forecast used in the energy model, and the revised zonal diagram demarking the sub-zones created for the energy model.
The data tables and feedback form are available on the South and Central Bulk Planning webpage. Feedback can be submitted to engagement@ieso.ca by December 19.
Active Planning Engagements - Deadlines for Comments
The IESO is seeking feedback on the information discussed at the following engagement sessions:
- Sudbury/Algoma Regional Electricity Planning | Due January 12
- Eastern Ontario Bulk Study | January 23
- South and Central Bulk Study | January 23
- East Lake Superior Regional Electricity Planning | Due January 30