Chatham-Kent to Lakeshore Project logo with tagline: Growing locally to power tomorrow
As demand for electricity in Southwestern Ontario is anticipated to grow significantly over the next several years, Hydro One is building a new transmission line between Chatham-Kent to Lakeshore.

A safe and reliable power supply is essential to ensure southwestern Ontario can continue to grow now and into the future. That’s why Hydro One is proposing to construct a new double-circuit 230 kilovolt transmission line from our Chatham Switching Station located in the Municipality of Chatham-Kent to the future Lakeshore Switching Station, which will be located in the Municipality of Lakeshore. This new transmission line will help accommodate future electricity growth, improve reliability for homes and businesses and support local industries in the region at a time when it is needed most.

The proposed project requires the completion of a Class Environmental Assessment (Class EA), as well as Ontario Energy Board (OEB) approval (Leave-to-Construct application under Section 92 of the OEB Act).

Class Environmental Assessment

The Chatham to Lakeshore Line is subject to the Class Environmental Assessment for Minor Transmission Facilities (2022) , in accordance with the Ontario Environmental Assessment Act. The Class EA is a streamlined planning process ensuring that applicable projects are planned and carried out in a manner that is efficient and environmentally acceptable.

Since January 2020, Hydro One has been conducting a Class EA to build the new Chatham to Lakeshore Line. Through the Class EA process, we have assessed three route alternatives and associated variations by collecting environmental and technical information, as well as input from agencies, Anishnawbek and Haudenosaunee communities, community members, elected officials, interest groups and businesses. Based on the information gathered and feedback received, Route Alternative 2A was selected as the preferred route for the new transmission line, as shown on the maps below.

The draft ESR outlines the Class Environmental Assessment (EA) process undertaken for the proposed project, including alternatives identified, environmental information collected, consultation undertaken, the route evaluation and selection process, and environmental effects and mitigation measures planned. The document was available for review and comment for 60 days, from June 11, 2021 until August 10, 2021.

Click here to read a fully web accessible version of the draft ESR.

Interactive Map

Preferred Route Alternative

Chatham to Lakeshore - Area Map

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West Portion

Revised Route Options Map West

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Central Portion

Revised Route Options Map Central

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East Portion

Revised Route Options Map East

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Refined Route Alternatives
Initial Route Alternatives

Chatham-to-Lakeshore Local Study Area Map

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West Portion

Route Options Map 1

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Central Portion

Route Options Map 2

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East Portion

Route Options Map 3

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Anticipated Project Schedule

  • JANUARY2020
  • Notice of Commencement

  •  MARCH 2020
  • First Community Open House

    (Postponed due to COVID-19)

  •  MAY 2020
  • Virtual Information Session

    (Introduction of Project)

  • Virtual Open House & Live Discussion
    (Update on Project)

  • FEB/MAR2021
  • Virtual Open House & Live Discussion (Selection of Preferred Route)

  • JUNE2021
  • Release of Draft Environmental Study Report for Review

  • 2023-
  • Proposed Construction Start*

  • 2024-
  • Proposed Line In-Service*

NOTE: All dates are anticipated and could change based on project feedback.
* In order to meet the energy needs of the region as quickly as possible, we are looking for opportunities to advance the construction start time to bring the new line into service at an earlier date.


Public Consultation

Please click the buttons below to view the associated materials. 

Virtual Open House & Live Discussion
March 2021
Virtual Open House & Live Discussion
October/November 2020
Virtual Information Sessions
May 2020
Notice of Commencement
January 2020

Contact Us

We are committed to listening to local communities every step of the way, and residents have an opportunity to provide feedback
or ask our project team a question by contacting Hydro One’s Community Relations at 1-877-345-6799 or