Summary
Hydro-Québec has issued a sealed-bid public call for tenders (SEAO notice AM011449, reference 20156771) for civil infrastructure maintenance ('pérennité') works at its Coteau-1 and Coteau-3 hydroelectric dams, which are part of the Beauharnois-Les Cèdres complex in the Montérégie region of Quebec near Salaberry-de-Valleyfield. The contract covers alteration and civil sustainability works at the two dams (Coteau-1 is 320 metres long with 18 gates; Coteau-3 is 270 metres long with 16 gates), with an estimated value between $10 million and $100 million CAD. The solicitation was posted on June 30, 2026, and sealed bids must be submitted by August 24, 2026.