Power Transmission Projects

315/25-kV Saint-Bruno-de-Montarville Substation

At a Glance
Status: Under construction
Region: Montérégie
Owner: Hydro-Québec TransÉnergie
Project supervision: Hydro-Québec Équipement et services partagés
Documents

For more information on the project, contact:

Hélène Perrault
Advisor – Community Relations – Richelieu
4825, avenue Pinard, 1er étage
Saint-Hyacinthe (Québec)
J2S 8S7
E-mail: perrault.helene@hydro.qc.ca

Highlights:

  • Work is progressing well: some steps are even ahead of schedule.
  • Over 40 workers are on the jobsite.
  • The foundations and the control building's structure are now complete.
  • The teams have carried out over half of the foundation work where electrical equipment for the 315-kV section will be installed.
  • The steel structures to support the electrical equipment started going up in June.

Photos gallery

To meet the growing demand for electricity, a transformer substation will be built on the south shore of Montréal. The planned 315/25 kV Saint-Bruno-de-Montarville substation is a long-term solution to the capacity constraints besetting Brossard, Chambly and Saint-Basile substations. In addition, it will include the underground infrastructure needed to supply the growing load on the distribution system around the intersection of highways 30 and 116.

The work to build the substation got underway in March 2012. The new facilities will be commissioned in fall 2013.

Hydro-Québec would like to thank the individuals and organizations that took part in the public consultation activities for the project.

Characteristics of the new substation
The new substation will be located in an industrial area, in the Gérard-Filion business park. The lot measures 120 m by 220 m with a fenced perimeter of approximately 97 m by 183 m.

When the substation is commissioned in 2013, it will include two 315/25-kV power transformers, seven 25-kV feeder bays and a 270-m2 control building. As electricity demand increases, two more transformers and up to 21 additional underground distribution line feeders may be installed.

The project also involves the construction of a 170-m 315-kV tap line to connect the new substation to the existing 315-kV Boucherville-La Prairie line.

Construction work
Following the request for proposals, the contract to build the substation was awarded to general contractor Telecon, who will act as prime contractor for the project. Hydro-Québec will ensure technical supervision and the environmental compliance of the work site.

Project phases
Currently underway
Site set up
The contractor installs the equipment and receives the work material.		 March 2012
Upcoming
Excavation, backfilling and levelling
Building a substation requires extensive development and earthwork to prepare the surface on which the equipment will be installed.

It is estimated that the excavation and earthwork will produce 7,500 m3 of material and require some 2,000 m3 of backfill.

Transportation of materials during the construction phase will be carried out according to the bulk material transportation standards in effect. 		March and April 2012
Foundations and control building construction
The contractor will put down the foundations on which the buildings and electrical equipment will be installed and will then build the control building.		 April to December 2012
Erection of structure, equipment and steel framework and installation of the electrical equipment
Once the steel framework and support structures are erected, the equipment, including transformers, circuit breakers and disconnect switches, will be assembled and installed. 		September 2012
to April 2013
Testing and commissioning of the equipment
Tests are carried out before the facility is put into service.		 Throughout 2013

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