Metrolinx, an agency of the Province of Ontario, is upgrading its commuter rail system into Regional Express Rail.

The Greater Toronto and Hamilton Area (GTHA) is now home to nearly 7 million people and heading towards 10 million by 2041. To address the urgent transit needs of the GTHA, the Province of Ontario committed to implement Regional Express Rail and make other improvements to the GO system. By 2025, electric trains will be running every 15 minutes or better, all day and in both directions, within the most heavily travelled sections of the GO network.

Metrolinx and Hydro One are co-proponents, jointly carrying out the Transit Project Assessment Process (TPAP) in accordance with Ontario Regulation 231/08 - Transit Projects and Metrolinx Undertakings (made under the Environmental Assessment Act) to examine the environmental impacts of converting several GO rail corridors from diesel to electric propulsion. Please click here ​to see the Notice of Commencement, published on June 14, 2017. Please click here to see the Notice of Completion (aussi disponible en français). Metrolinx and Hydro One have received a Notice to Proceed from the Minister of Environment and Climate Change and submitted a Statement of Completion for the project. For more information, please visit Metrolinx's project website.​

Image of Metrolinx key map

If you would like to be added to the project contact list, submit comments or questions, or to receive additional information related to the project, please contact:


James Hartley

Manager, Environmental Programs and Assessment 
Metrolinx – GO Transit

t: Metrolinx Customer Care Centre 1-888-438-6646 




Patricia Staite

Environmental Planner 
Hydro One Networks Inc.

t: 416-345-6799