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 NEWS: Please click here for construction update.

Planning to meet central Ottawa's electricity needs

Project Overview

To support the growing electricity needs of the central Ottawa area, we are working with Hydro Ottawa to upgrade our transmission infrastructure to increase capacity to supply electricity to central Ottawa. 

This project will involve upgrading the existing 115 kV transmission line between Overbrook Transformer Station on Coventry Road and Balena Park in the Riverview neighbourhood by adding a second 115 kV circuit (three wires).

To plan this work, we are undertaking a Class Environmental Assessment (see approvals section below), that will include plenty of opportunities for public involvement. 

The Overbrook to Riverview Transmission Line Upgrade project was recommended by the IESO’s Integrated Regional Resource Plans (IRRP) as a near term action to help address this need for additional capacity.

Rolled up cables

Timeline: Public and Stakeholder Consultation

  • May2016
  • Briefing for City of OTTAWA elected officials
  • EARJun2016
  • Class Environmental Assessment initiated
  • SEPT2016
  • Public Information Centre
  • OCTNOV2016
  • Draft Environmental Study Report available for a 30-day public review period
  • DEC2016
  • Final Environmental Study Report filed with the Ministry of the Environment and Climate Change
  • Fall2017
  • Anticipated Start of Construction (Detailed design and engineering, material procurement, etc.)
Project Approvals

Learn more about the work we have completed to ensure provincial approval of this project.

Project Approvals
Public Consultation

Learn more about the Public Information Centres (PICs) we conducted to support this project.

Public Consultation
Maps & Diagrams

View maps, diagrams, and resources related to this project.

Maps & Diagrams
Construction Updates

Get the latest updates as construction progresses for the project. Download the construction updates PDF.

Construction Updates PDF

Contact Us


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


Ani Bekmezian
Community Relations
Hydro One Networks Inc.


Tel:  416-345-6799 or 1-877-345-6799

Fax: 416-345-6984

community.relations@hydroone.com