The draft Environmental Study Report is now available for public review and comment until August 10, 2021. Click here to learn more and view the report.
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 (Hydro One, 2016) , 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 Environmental Study Report (ESR) is now available for review and comment. 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 is 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.

Electronic copies of the draft ESR are also available on USB drives for sign out and/or curbside pickup at the locations listed below, pending operating hours (please call ahead).

Sign Out Locations
How to Provide Your Input

Written comments or questions on the draft ESR must be received by Hydro One no later than 4:30 p.m. on Tuesday, August 10, 2021 and must be addressed to:

Paul Dalmazzi, Environmental Planner, Hydro One Networks Inc.
483 Bay Street, North Tower, 12th Floor, Toronto, ON M5G 2P5
Phone: 1-877-345-6799 (Community Relations hotline)

During the review period, Hydro One will respond to and make best efforts to resolve any issues raised by concerned parties, following which, Hydro One will finalize the ESR and file it with the Ministry of the Environment, Conservation and Parks (MECP). The project will then be considered acceptable to proceed as outlined in the ESR.

A request may be made to the MECP for an order requiring a higher level of study (i.e., requiring comprehensive EA approval before being able to proceed), or that conditions be imposed (e.g., require further studies), however; only on the grounds that the requested order may prevent, mitigate or remedy adverse impacts on constitutionally protected Aboriginal and treaty rights. The MECP will not consider requests on other grounds.

Requests should include the requester’s contact information, as well as specify what kind of order is being requested (request for conditions or comprehensive EA), how an order may prevent, mitigate or remedy potential adverse impacts on Aboriginal and treaty rights, and any information in support of the statements in the request. The request should be sent in writing or by email to:

Ministry of the Environment, Conservation and Parks
777 Bay Street, 5th Floor
Toronto ON M7A 2J3

Environmental Assessment Branch
Ministry of the Environment, Conservation and Parks
135 St. Clair Avenue West, 1st Floor
Toronto, ON M4V 1P5

Requests should also be copied to Hydro One per the contact information provided above. Please visit the ministry’s website for more information on requests for orders under section 16 of the Environmental Assessment Act at:

All personal information included in your request — such as name, address, telephone number and property location — is collected, under the authority of section 30 of the Environmental Assessment Act and is collected and maintained for the purpose of creating a record that is available to the general public. As this information is collected for the purpose of a public record, the protection of personal information provided in the Freedom of Information and Protection of Privacy Act (FIPPA) does not apply (s.37). Personal information you submit will become part of the available public record unless you request that your personal information remain confidential.

Click below to view an interactive map.

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. 

Notice of Draft Environmental Study Report
June 2021
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