Rio Tinto to Invest Up to $1.2 Billion in Quebec Power Plant (1)

May 15, 2025, 7:25 PM UTC

Rio Tinto Group plans to spend as much as $1.2 billion by 2032 to modernize its 99-year-old power plant in Quebec, despite tariffs implemented by the Trump administration on Canadian imports of aluminum.

The Isle-Maligne hydropower generation station located in Alma, about 300 miles (482 kilometers) north of Montreal, provides electricity to Rio Tinto’s aluminum smelters in the region. The company said in a statement that it is the “largest single investment in its hydroelectric assets since the 1950s.”

Rio Tinto’s Isle-Maligne hydropower generation station.
Source: Rio Tinto

“This major investment to modernize our facilities will ensure the long-term future and competitivity of our low carbon aluminium production ...

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