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Regional Electricity Planning - Toronto

Forecasting and Planning

Regional electricity planning is underway for the Toronto region. This engagement initiative will provide interested parties with an opportunity to offer input for consideration during the regional planning process.

Regional electricity plans take up to a 20-year outlook on every region in the province. The planning process provides an opportunity for communities to tell the IESO about anticipated needs and priorities, and to contribute to the development of the options for meeting a region’s future electricity needs.

Interested parties in this engagement initiative include but are not limited to:

  • Municipalities including the City of Toronto, City of Mississauga and City of Pickering
  • Indigenous communities including:
    • Mississaugas of the Credit First Nation,
    • Six Nations of the Grand River,
    • Haudenosaunee Confederacy Chiefs Council,
    • York Region Métis Council
    • the Huron Wendat of Wendake, Quebec
  • Local distribution companies (LDCs) who serve the community and already participate as part of the Technical Working Group, including Toronto Hydro Electric System Limited, Elexicon Energy Inc., Hydro One Networks Inc. (Distribution), and Alectra Utilities
  • Transmitters (Hydro One Networks Inc.)
  • Consumers and service providers for the area 

All interested parties are invited to participate in this engagement initiative.

Toronto Region Working Group - A Technical Working Group consisting of the four LDCs in the region, the transmitter, and the IESO will use this regional planning engagement initiative to incorporate input while developing the Scoping Assessment Outcome Report for the region.

All comments and enquiries in this engagement initiative can be directed to

Documents referenced on this page, but not posted, can be obtained by contacting with a link to the web page that lists the document and advise whether it needs to be provided in an accessible format. Please allow a minimum of one business day for a response.

Also see the regional planning webpage for Toronto

Schedule of Activities

Date Materials Expected Actions

April 2023

IESO's response to supplementary feedback


March 21, 2023

Final Toronto Scoping Assessment Outcome Report

Final version posted

March 21, 2023

IESO response to feedback for the Scoping Assessment Webinar


March 2, 2023

Deadline for public comment on draft Toronto Region Scoping Assessment Outcome Report

Feedback Received:

Supplementary Feedback Received:

All feedback to be posted

February 16, 2023

Public Webinar


  • Overview of the regional electricity planning process in Ontario
  • Update on planning activities underway in the region
  • Overview of the Scoping Assessment
  • Next steps

Recorded Presentation

February 14, 2023

Draft Toronto Region Scoping Assessment Outcome Report

Draft posted for public comment

February 2, 2023

Launch Toronto Scoping Assessment Engagement