Refurbishment of the hydropower complex - Modernization of the Beauharnois–Les Cèdres complex

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Complex modernization

The investigations on the Beauharnois‑Les Cèdres hydropower complex were used to prioritize the work required on all of the structures on the Fleuve Saint‑Laurent (St. Lawrence River) and the Beauharnois canal. The work will take several decades and will essentially include the following:

1. Ad-hoc priority repair work – ongoing

2. Modernization work
Coteau‑1 and Coteau‑3 dams	Preliminary project in progress
Coteau‑2 dam	Preliminary project in progress
Coteau‑4 dam	Preliminary project to come
Île‑Juillet‑1 and Île‑Juillet‑2 dams	Preliminary project to come
Other structures and facilities	Planning to come

Watch our video about the studies and investigations on the hydropower complex!

Duration: 2 minutes 27 seconds

Location of planned work

Planned work map

Download the planned work map [PDF 818 kB]

Info-Project – Modernization of the Beauharnois–Les Cèdres hydropower complex

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Did you know?

The storage capacity of the Great Lakes is 22,950 billion cubic metres of water, or the equivalent of over six million Olympic pools.

Did you know?

The watershed of the Great Lakes and the Fleuve Saint-Laurent (St. Lawrence River) is one of the most diverse in the world. It is home to 3,500 species of plants and vertebrates, and over 250 species of fish.

Did you know?

The Moses-Saunders dam supplies two hydroelectric generating stations: the R.H. Saunders generating station, which is located on the Canadian side of the border and has an installed capacity of 1,045 MW; and the Robert Moses generating station, on the U.S. side, whose installed capacity is 912 MW.

Did you know?

Note interne : Prévoir un autre "Saviez-vous que" pour clarifier que la première vocation du canal de Beauharnois, avant la production hydroélectrique, est de servir à la Voie Maritime du Saint-Laurent pour la navigation commerciale.

Did you know?

Before the Beauharnois Light Heat and Power Company began the construction of the Beauharnois canal in 1929, all the water from Lac Saint-François flowed along the natural riverbed of the Fleuve Saint-Laurent (St. Lawrence River). The canal diverts a significant portion of water toward Beauharnois generating station to maximize hydropower generation.

A number of compensatory structures, such as the Île-Juillet, Saint-Timothée, Pointe-du-Buisson and Pointe-des-Cascades dams, were built along the natural riverbed to maintain the river’s natural appearance and optimize its use by riverside communities.