Regional Electricity Planning - GTA East 2025

Regional electricity planning is underway for the GTA East electrical region to ensure a reliable supply of electricity, and to support local growth and economic development. Regional planning looks at the unique needs of each region and considers wire and non-wire options and innovative resources to meet the needs. This engagement initiative will provide interested parties with an opportunity to offer input for consideration during the regional planning process.

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

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

• Municipalities including the City of Pickering, Town of Ajax, Town of Whitby, City of Oshawa, Municipality of Clarington, Township of Scugog, Township of Uxbridge, and the Regional Municipality of Durham.
• Indigenous communities that may be potentially impacted or may have an interest based on treaty territory, traditional territory or traditional land uses including Alderville First Nation, Beausoleil First Nation, Chippewas of Georgina Island First Nation, Chippewas of Rama First Nation, Curve Lake First Nation, Hiawatha First Nation, Kawartha Nishnawbe First Nation, Mississaugas of Scugog Island First Nation, Mississaugas of the Credit First Nation, Métis Nation of Ontario.
• Local distribution companies (LDCs) who serve the community including Elexicon Energy Inc., Hydro One Distribution and Oshawa Power Utilities Corp.
• Transmitters (Hydro One Networks Inc.)
• Consumers, service providers, local residents, businesses and associations in the area. 

GTA East Technical Working Group - A Technical Working Group is led by the IESO and consists of the transmitter (Hydro One Networks Inc.) and the LDCs in the region (Elexicon Energy Inc., Hydro One Distribution and Oshawa Power Utilities Corp.). The group will use this regional planning engagement initiative to incorporate input while developing the IRRP.

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

Related Information

• 2025 GTA East Scoping Assessment Outcome Report
• 2024 GTA East Needs Assessment
• 2022 Gatineau Corridor End-of-Life Study
• 2016 Pickering-Ajax-Whitby Integrated Regional Resource Plan (IRRP)
• 2016 Pickering-Ajax-Whitby IRRP Appendices
• Pickering-Ajax-Whitby IRRP Terms of Reference
• 2014 GTA East Scoping Assessment Outcome Report
• Hydro One GTA East Regional Planning website

Schedule of Activities