Northern Ontario Bulk Planning

The IESO completed the Northern Ontario Bulk Planning initiative in September 2025. This engagement provided Indigenous communities, municipalities, customers and interested parties with an opportunity to offer input for consideration into the development of the 2025 North-South Transmission Reinforcement Plan. To stay informed on future bulk planning activities, kindly subscribe to receive bulk planning updates.

All comments and enquiries in this engagement initiative can be directed to engagement@ieso.ca.

Related Information

Bulk Planning Overview

Annual Planning Outlook

Formalizing the Integrated Bulk System Planning Process

Schedule of Activities

Date	Engagement Activity	Expected Actions
September 23, 2025	Final Report posted North-South Transmission Reinforcement Plan Communication	Engagement closed
May 29, 2025	Public Engagement Webinar The IESO will provide sector participants and Ontario communities with an update on the Bulk Planning initiatives underway. The webinar will be broken-up into two parts: Part 1 Presentation: During this session the IESO will provide an overview of Bulk Transmission Planning, introduce the North of Sudbury Bulk Plan, share updates on the progress of the Northern Ontario Bulk Plan, the Eastern Ontario Bulk Plan and the Ontario-Manitoba Intertie Joint Study, seek feedback and answer questions. Part 2 Presentation: During this sessions the IESO will share preliminary portfolios of transmission options as part of the South and Central Bulk Study to support future generation connections and demand growth in key areas throughout southern and central Ontario, including the GTA, and to enable a decarbonized power system in the future, seek feedback and answer questions.	Recorded Presentation - Part 1 Recorded Presentation - Part 2
December 6, 2024	Feedback due on the items discussed during the November 20th engagement session. Canadian Renewable Energy Association Energy Storage Canada Red Sky Métis Independent Nation April 15, 2025: IESO Response to Feedback
November 20, 2024	Public Engagement Webinar The IESO will provide sector participants and Ontario communities with an update on the active Bulk Planning initiatives underway. Presentation Feedback Form	Recorded Presentation This webinar was presented during the IESO's November stakeholder engagement sessions, see full agenda for more information.
October 15, 2024	Feedback due following the September 24, 2024 engagement session. Feedback Received: ESC OPG OWA TCE November 19, 2024: IESO Response to Feedback
September 24, 2024	Public Engagement Webinar Presentation Feedback Form	Recorded Presentation This webinar was presented during the IESO's September stakeholder engagement sessions, see full agenda for more information.
July 31, 2024	Feedback due following the July 10, 2024 Indigenous Relations Webinar. Feedback Received: Territorial Planning Unit (TPU) of Grand Council Treaty #3 (GCT3) November 15, 2024: IESO Response to Feedback
July 10, 2024	Indigenous Relations Webinar: Bulk Transmission Planning Session on 1) South and Central and 2) Northern Ontario bulk studies This webinar will provide participants with information about the South and Central and Northern Ontario bulk studies, including its scope, objectives and timeline. Presentation Feedback Form	Recorded Presentation
July 10, 2024	Feedback due following the June 19, 2024 engagement session. Feedback Received: Greater Sudbury Utilities TC Energy April 15, 2025: IESO Response to Feedback
June 19, 2024	Public Engagement Session: Bulk Transmission Planning Session on 1) South and Central and 2) Northern Ontario bulk studies This public webinar will provide participants with information about the South and Central and Northern Ontario bulk studies, including its scope, objectives and timeline. Presentation Feedback Form	Recorded Presentation This webinar was presented during the IESO's June stakeholder engagement sessions, see full agenda for more information.