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To better serve our customers in Hamilton and THE surrounding area, we are planning to refurbish the existing 115 kilovolt (kV) line between Horning Mountain Junction (JCT) and Glanford JCT.


This transmission line, installed in 1915, is critical to serving electricity customers in the City of Hamilton. It is approaching its end-of-life and has been identified for replacement. The planned line refurbishment work is essential to ensure a safe and reliable electricity supply into the future.

The Horning Mountain JCT to Glanford JCT line refurbishment consists of two scopes of work:

  1. Building a bypass line on the existing transmission circuit to ensure continued power to customers during construction. This will involve installing new equipment and wires on existing towers and installing approximately 20 temporary wood pole structures to accommodate the bypass line.

  2. Replacing and relocating approximately 33 lattice towers with new steel monopole structures, lattice towers and new components to ensure infrastructure is aligned within the existing corridor. Work will also include reinforcing the remaining towers within the corridor.


Project Profile

This project involves refurbishing the existing 115 kV transmission line between Horning Mountain Junction to Glanford Junction. View maps of the study areas below.

Study Area

Replacing and refurbishing transmission line from Glanford JCT to Horning Mountain JCT.

View the Study Area Map (.PDF)

Study Area

Building a bypass line from west of Nebo Ro. to west of Glancaster Rd. along existing transmission line.

View the Study Area Map (.PDF)
Maps and Diagrams
  1. Project area

  2. Bypass line power supply

  3. Transmission line replacement.


Public Consultation

We know construction can be disruptive. Hydro One is committed to communicating construction updates early and often, and doing all we can to accommodate residents and mitigate disruptions.


Community Open House

We want to hear from you and share as much information as possible. If you're interested in learning more about this project and the work we're doing in your community, we encourage you to visit our website for the latest project updates.

A community Open House advertisement was published in several local newspapers and we conducted a Community Open House at the Hamilton District Christian High School (92 Glancaster Road, Ancaster, ON) on September 27, 2018. View materials from the information session below:


Contact Us


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

Hydro One Community Relations

Tel:  1-877-345-6799