Forecasting and Planning
The engagement activities to support the North of Sudbury Bulk Plan that actively involved communities and stakeholders in shaping the future of Ontario's transmission system have been completed.
The North of Sudbury Bulk Plan was initiated in response to rapidly increasing electricity demand, driven primarily by mining development and mineral processing, and new resources being connected to supply electricity to the grid. With the northeast also being served by aging infrastructure, critical investments are required to replace equipment nearing end of life to safeguard reliability. Together, these factors led to a focused bulk system assessment to ensure the transmission system can support near-term demand growth and long-term resource integration while preserving flexibility for future development and managing ratepayer risk.
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All comments and enquiries related to this engagement initiative can be directed to engagement@ieso.ca.
Report: North of Sudbury Bulk Plan
Backgrounder: North of Sudbury Bulk Plan
Anticipated timing for this engagement is presented below.
| Date | Engagement Activity | Expected Actions |
|---|---|---|
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August 20, 2026 |
Final documents posted |
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June 10, 2026 |
Feedback due on the items discussed during the May 20 engagement session. Feedback received:
August 20, 2026: IESO Response to Feedback |
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May 20, 2026 |
Public Engagement Webinar The IESO will provide an update about the North of Sudbury Bulk Plan. |
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October 31, 2025 |
Feedback due on the items discussed during the September 30th engagement session. Feedback received: December 19, 2025: IESO Response to Feedback |
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October 8, 2025 |
Indigenous Engagement Webinar The IESO will provide sector participants and Ontario communities with an update about our current Bulk Planning initiatives. |
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September 30, 2025 |
Public Engagement Webinar The IESO will provide sector participants and Ontario communities with an update about our current Bulk Planning initiatives. |
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June 19, 2025 |
Feedback due on the items discussed during the May 29th engagement session. Feedback Received: September 8, 2025: IESO Response to Feedback |
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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 intro two parts:
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