Hydro One Networks Inc. - High-voltage transmission line construction in Southwestern Ontario

Hydro One Networks Inc.
EB-2024-0155

The application seeks:

  • Permission for Hydro One Networks Inc. (HONI) to construct a 230 kilovolt double-circuit transmission line from the Lambton Transformer Station, connecting to the Wallaceburg Transformer Station and ending at the Chatham Switching Station. The approximate length of the transmission line facilities is 64 km.
  • Permission for HONI to convert the Wallaceburg Transformer Station from a 115 kilovolt supply to a 230 kilovolt supply to repurpose the existing 115 kV transmission supply line corridor for the new transmission line.
  • Approval to complete any associated any station facility expansions or upgrades required at the terminal stations.
  • Approval of the forms of agreement that HONI will offer affected landowners.

The OEB hearing is not the only approval process required before a line is built. Environmental issues, or issues related to the Crown’s duty to consult Indigenous peoples, are not part of the OEB’s review unless there is a direct impact on price and the reliability and quality of electricity service.
A map of the proposed route for the transmission line is provided below.

st. clair transmission line project map

Type: Leave to Construct

This application will be heard using the Short-form Electricity & Natural Gas performance standard (pdf). View an expanded timeline (pdf) of the procedural steps for this Leave to Construct application and read the Standard Issues List (pdf).

Find out more about OEB Performance Standards for Processing Applications and use the Application Planning Tool to assist you with an estimate of the milestones in this proceeding.

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Participation ActivitiesIntervenorLetter of CommentFollow a Proceeding
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Submit a letter of comment

You can submit a letter of comment that will be considered by the panel deciding the application. Unless the notice states otherwise, your letter of comment will be accepted until the record of the proceeding is closed (which usually occurs with the filing of the applicant’s final reply argument). However, you are encouraged to submit your letter as early in the process as you can. Depending on timing of receipt of letters of comment, the applicant will typically provide a respond to the issues raised in those letters. Your letter will be provided directly to the panel of Commissioners who will be deciding whether the application is approved. The panel will consider your comments in reaching their decision. The panel will only be able to consider comments which relate to issues which are within the authority of the OEB and relevant to the issues being considered by the panel.

More about commenting and privacy
All letters of comment sent to the OEB are placed on the public record. This means the letters will be placed on our website. Before the letter of comment is placed on the public record, personal contact information contained in the address, phone number, and email address fields of this form is removed. The individual's name and the content of the letter will become part of the public record.

If you would like a response from the applicant, please send a copy of your letter directly to the applicant, including your personal contact information. The OEB removes your personal contact information from your letter for privacy reasons before it is posted to our website.

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Or mail the below address with the reference number EB-2024-0155

Ontario Energy Board
P.O. Box 2319
2300 Yonge Street, 27th Floor
Toronto ON M4P 1E4
Attn: Registrar