Commerce Transformer Station and Line Project

As industry and business grows in the City of Markham, so does the need for safe, clean and reliable power. To energize a new data storage facility planned at Highway 7 and Commerce Valley Drive E, Hydro One is initiating a Class Environmental Assessment (Class EA) to build the following proposed infrastructure:

  • A new 230 kilovolt (kV) transformer station (TS) located on the facility’s property – referred to as Commerce TS.
  • A new junction station (JCT), which will transition power from an overhead transmission line to an underground cable.
  • A new 230 kV transmission line connection which includes:
    • An overhead transmission line between the new JCT location and Hydro One’s existing transmission lines located east of Rodick Road.
    • An underground cable between the new JCT location and the new Commerce TS.

Expected Completion Date

2028

Current Project Phase

Planning

We're here to help you

To provide comments or to be added to the project contact list, please call or email:

1-877-345-6799 Community.Relations@HydroOne.com
power lines

Planning Process

Minimizing the effects of our projects and operations on the environment is important to us. The planning of this project will follow the “Class Environmental Assessment for Minor Transmission Facilities (2022)” in accordance with the Ontario Environmental Assessment Act. This planning process applies to transmission infrastructure projects that are carried out routinely and have predictable environmental effects that can be readily managed. Once the Class EA process is successfully completed, construction could commence in early 2026 to meet the in-service date of 2028.

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Map of Commerce Transformer Station and Line Project

Below is an overview of the study area where the junction location, overhead lines and underground cable routes will be identified.

Download PDF
Commerce route map Enlarge (.PDF)

We’d Like To Hear From You

Early, meaningful and open engagement is a top priority for Hydro One. Receiving feedback from Indigenous communities, members of the public, businesses, government agencies, and other interested parties will be instrumental to inform all aspects of the Class EA and project. To connect with Hydro One’s Community Relations team to share your feedback on what matters to you or to join the project contact list, please call 1-877-345-6799 or email Community.Relations@HydroOne.com

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Public Consultation

View and download materials related to the project

Anticipated Project Schedule

Late 2023
Notice of Commencement for Project and Study Area
Early 2024
Notice of Alternative routes and Community Open House #1
Early 2025
Notice of Preferred Route and Community Open House #2
Mid 2025
Draft Environmental Study Report (ESR) available for 30-day review period
Mid 2025
Submit final ESR
Early 2026
Construction starts
Early 2028
Project In-Service

We’re here to help you

To provide comments or to be added to the project contact list, please call or email:

1-877-345-6799 Community.Relations@HydroOne.com