Commissioned in 1957, Saint-Jean substation is located in Dollard-des-Ormeaux, at the intersection of boulevards Saint-Jean and De Salaberry. It supplies part of the cities of Dollard-des-Ormeaux, Pointe-Claire, Kirkland and Beaconsfield, serving a total of about 10,000 customers. Given that the facility is over 50 years old, most of the substation’s 120/12-kV equipment needs to be replaced.
Hydro-Québec will refurbish the substation and convert the current voltage to 315/25-kV to meet future growth in demand. The planned substation, which will be built mainly on the site of the current substation, will be supplied by a new 315-kV line from Sources substation located less than 3 km away. This line will run through a right-of-way where power lines are already located.
This project is part of the transmission system upgrade on the island of Montréal to help meet increasing demand and ensure the long-term operability of facilities.
Saint-Jean project: Why a new substation?
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Saint-Jean project: Why a new line?
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Saint-Jean project: Why not run the line underground?
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