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Hydro One has initiated a Class Environmental Assessment to install a temporary 115 kilovolt (kV) bypass transmission line between the communities of Westover and Copetown in the City of Hamilton.

The temporary wood pole line will be approximately 13 kilometres in length and will largely run parallel to the existing 500 kV double-circuit line. It will be used to maintain a safe and reliable supply of power to the Enbrg Westover S Customer Transformer Station (CTS).

Construction for the proposed temporary line is planned to begin as early as November 2019 to meet a target in-service date of May 2020. The line will be operational for approximately two years and will ensure continuous power during planned refurbishment of a 115 kV line between Harpers Junction and the Enbrg Westover CTS stations.

Map of the Westover to Copetown project study area
Click to enlarge (.PDF)

The Process

The Westover to Copetown Temporary Transmission Line project is subject to the Class Environmental Assessment for Minor Transmission Facilities (Hydro One, 2016) process, which is in accordance with the Ontario Environmental Assessment Act. This process is in place to ensure transmission projects that have a predictable range of impacts have feasible environmental mitigation and protection measures in place. The process contains screening provisions that may apply to the Westover to Copetown project.

Community Engagement

Community engagement and consultation is important to Hydro One. We are committed to keeping community members informed about important infrastructure projects like this one. Hydro One is providing notification of the project to government agencies, municipal officials, Indigenous communities, potentially affected property owners, and other local stakeholders.

Download the Notice  


Public Information Centres

Hydro One will be hosting a Public Information Centre (PIC) on July 31, 2019 to share information about the proposed project and to gather feedback from community members. Details for the PIC will be shared with government agencies, municipal officials, Indigenous communities, potentially affected property owners, and other local stakeholders. An advertisement for the PIC will run in local newspapers. See details below:

Wednesday, July 31, 2019
4:00 - 8:00 PM
Westover Women’s Institute Hall
1355 Concession Rd 6 W, Westover Village, ON
See Google map


Project Timeline

  • MAY2019
  • Notice of Commencement for Class Environmental Assessment

  • JULY
  • Public Information Centre

  • OCT2019
  • Class Environmental Assessment completed

  • NOV2019
  • ​Anticipated start of construction

  • MAY2020
  • ​Target in-service date

  • FALL2021
  • Planned removal

Contact Us

For more information or to be added to the project contact list, please contact:

Community Relations
Hydro One Networks Inc.

Tel: 416-345-6799 or 1-877-345-6799

Fax: 416-345-6984