Project overview

Notre-Dame substation

To meet increasing demand and ensure the long-term operability of its power transmission system, Hydro-Québec is planning to upgrade an underground transmission line in the Mercier-Hochelaga-Maisonneuve borough to 120 kV.

The new 5.5-km underground line will connect Jeanne-d’Arc substation, located on Rue Hochelaga, between Avenue d’Orléans and Rue Jeanne-d’Arc, and Notre-Dame substation, located on Rue Notre-Dame Est, at the corner of Rue des Futailles.

The line currently connecting the two substations is showing signs of obsolescence and needs to be replaced. It will nevertheless remain in operation until the new line has been commissioned, slated for the fall of 2017.

Two phases of construction work

Civil engineering work – Digging of trenches and installation of duct banks under the public roadway

  • The civil engineering work will be carried out one section at a time between July and November.
  • Certain temporary inconveniences must be anticipated: noise, dust, traffic disruptions, the use of heavy machinery.
  • The teams will make every effort to finish this work as soon as possible in order to mitigate the impacts.

Electrical work

  • The electrical work consists of installing electrical cables in the underground conduits.
  • Certain temporary inconveniences must be anticipated: traffic disruptions related to the use of equipment and trucks.
  • The commissioning of the new line is planned for the fall of 2017.

Hydro-Québec would like to thank its customers in advance for their patience and understanding.