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Sector Participants > Engagement Initiatives > Engagements > Central West Bulk Planning

Central-West Bulk Planning

Forecasting and Planning

The IESO has launched a Central-West Bulk Planning engagement to actively involve stakeholders and communities in shaping the future of Ontario's energy transmission system.

The 2022 Annual Planning Outlook indicated a need for a new Central-West Bulk Study in 2024 to assess the bulk transmission system between Hamilton and London in light of  potential economic development opportunities emerging  in the region. With the Volkswagen EV plant siting in St. Thomas, IESO advanced this work. The scope of the study has also expanded to assess the bulk transmission system from Hamilton to Windsor and consider other potential demand growth across southwestern Ontario in addition to the Volkswagen EV plant.

With the formalization of the Bulk System Planning Process in 2022, the IESO seeks to enhance transparency and create opportunities for valuable stakeholder input in individual bulk system studies. By seeking input on the scope of this study, the IESO aims to clarify key issues and strategize an effective engagement approach. Stakeholder involvement during the various phases, starting with targeted outreach in August 2023, will ensure that their views and preferences are considered throughout the planning process. This inclusive approach helps establish a strong foundation for successful implementation, enabling a sustainable energy plan that can adapt to future demands. The engagement's ultimate purpose is to proactively develop a Central-West bulk transmission plan that fosters reliable electricity supply and supports the region's economic growth objectives. By actively participating in this initiative, stakeholders have an opportunity to contribute to a more resilient and prosperous energy future for Ontario. Interested parties are invited to contact the IESO at

Schedule of Activities

Anticipated timing for this engagement is presented below.

Date Engagement Activity Expected Actions

Q4 2024

Final recommendations

Q2-Q3 2024

Public Webinar #3 on options development to enable further economic development in SW Ontario


January - March 2024

Public Webinar #2 on near-term recommendations to maintain reliable supply for Volkswagen EV plant

August 29, 2023

Following the August 16th engagement webinar, the IESO is seeking feedback from participants on the items discussed during the webinar.

Feedback Received:

September 21, 2023: IESO Response to Feedback


August 16, 2023

Central-West Bulk Planning Engagement Launch

Public Webinar #1

Public webinar to provide participants with information about the Central-West Bulk Study, including its scope, objectives and timeline.

Recorded Presentation

This webinar was presented during the IESO's August stakeholder engagement sessions, see full agenda for more information.