Regional Electricity Planning - GTA West

Forecasting and Planning

Regional electricity planning has kicked-off in the GTA West 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 up to a 20-year outlook on every region in the province. The planning process provides an opportunity for participants to tell the IESO about anticipated needs and priorities, and to contribute to the development of the options for meeting this region’s future electricity needs.

All interested parties are invited to participate in this engagement initiative and may include but are not limited to:

Municipalities of Brampton, South Caledon, Halton Hills, Mississauga, Milton, Oakville and Burlington, and the Regional Municipalities of Halton and Peel
Indigenous communities that may be potentially impacted or may have an interest based on treaty territory, traditional territory or traditional land uses: Alderville First Nation, Chippewas of Beausoleil First Nation, Chippewas of Georgina Island First Nation, Chippewas of Rama First Nation, Curve Lake First Nation, Haudenosaunee Confederacy Chiefs Council c/o Haudenosaunee Development Institute, Hiawatha First Nation, Mississaugas of Scugog Island First Nation, Mississaugas of the Credit First Nation, Six Nations of the Grand River and Métis Nation of Ontario
Local distribution companies (LDCs) who serve the community including Alectra Utilities, Burlington Hydro Inc., Halton Hills Hydro Inc., Hydro One Networks Inc., Milton Hydro Distribution Inc. and Oakville Hydro Electricity Distribution Inc.
Hydro One Transmission
Consumers and service providers for the area

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

GTA West Working Group - The Technical Working Group is lead by the IESO, and consists of the LDCs in the region and the local transmitter. The group will use regional planning engagement initiatives to incorporate input while developing the IRRPs for the region.

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

Related Information

Also see the regional planning webpage for GTA West

Active Engagement

Date	Materials	Expected Actions
June 23, 2025	Deadline for comment on June 2 webinar. Feedback Form Feedback Received: Town of Caledon Enwave
June 2, 2025	Public Webinar #1: Draft Forecasts Communication Draft Engagement Plan Presentation: Share an overview of the regional planning process, and the draft demand forecasts for the GTA West region Feedback Form IRRP Forecasting Methodology Data Table 1 Data Table 2	Recorded Presentation
November 28, 2024	Final GTA West Scoping Assessment Outcome Report and the IESO’s response to feedback Communication
November 14, 2024	Deadline for public comment Feedback Form Feedback Received: Enbridge Gas Inc.	Posted feedback received
October 29, 2024	Public Webinar Presentation	Recorded Presentation
October 24, 2024	Draft GTA West Scoping Assessment Outcome Report	Draft report posted for public feedback
October 9, 2024	Launch Scoping Assessment Engagement Communication

2021 IRRP Engagement Activities

Date	Materials	Expected Actions
July 15, 2021	Final GTA West IRRP Communication	2021 GTA West IRRP 2021 GTA West IRRP – Appendices IESO responses to feedback received on draft recommendations posted Engagement closed
May 20, 2021	Feedback on Public webinar #3 due Region of Peel Town of Caledon Town of Caledon Town of Oakville	Posted
May 6, 2021 at 1:00 p.m.	Public webinar #3 Communication Presentation Overview of IRRP and recommendations, including details on evaluation of alternatives	Recorded Presentation Seek input on IRRP recommendations Feedback form
September 17, 2020	IESO response to feedback	Posted
August 26, 2020	Feedback on public webinar #2 due City of Brampton City of Mississauga Energy Storage Canada Power Advisory Power Workers Union Region of Peel Town of Oakville	Feedback posted Feedback form
August 5, 2020	Public webinar #2 Communication Presentation Overview of options screening Overview of range of potential solutions to be examined Outline of next steps, timelines and considerations for broader engagement	Recorded Presentation Seek input on options screening and range of potential solutions to be examined
April 17, 2020	IESO response to feedback Engagement Plan	Posted
March 26, 2020	Feedback on public webinar #1 due Town of Milton	Feedback posted
March 12, 2020	Public webinar #1 Presentation Update on planning activities underway Summary of preliminary regional demand forecast and needs and draft engagement plan	Presentation and recorded webinar posted Seek input on draft engagement plan, electricity demand forecast and preliminary needs identified
February 20, 2020	Launch GTA West IRRP engagement initiative Communication Draft Engagement Plan
August 8, 2019	Final GTA West Scoping Assessment Outcome Report Communication	Final version posted following a two-week comment period
August 8, 2019	GTA West Scoping Assessment Outcome Report – IESO responses to Public Comments
July 8, 2019	Deadline for public comment on draft GTA West Scoping Assessment Outcome Report Brampton Flying Club The Great War Flying Museum Town of Oakville Recreational Aircraft Association
June 24, 2019	Public webinar Presentation Overview of the regional electricity planning process in Ontario Update on planning activities underway in the region Overview of Scoping Assessment Next steps	Webinar recording Seek input on draft Scoping Assessment Outcome Report
June 20, 2019	Draft GTA West Scoping Assessment Outcome Report Communication	Draft posted for public comment
June 6, 2019	Launch GTA West Scoping Assessment engagement Communication