Aluminium production has continued for 100 years [1] in the Saguenay–Lac-Saint-Jean region of Quebec, Canada.

The longevity of this industry highlights the strategic intersection of natural resources and industrial development. By utilizing the region's abundant and inexpensive hydroelectric power, the smelting process became economically viable on a massive scale, transforming the local economy and landscape.

The operations were originally launched by Alcan, which is now part of Rio Tinto [1]. The company established a significant presence in the area, including the development of the town of Arvida [1]. This industrialization provided the necessary infrastructure to support primary aluminium smelting, a process that requires immense amounts of electricity.

Aluminium has been produced in Saguenay–Lac-Saint-Jean for a century [1], a report from Radio-Canada said. The company planned to mark this milestone with various activities and events to celebrate the anniversary [1].

The impact of the industry extended beyond the plants themselves. The aluminium sector redefined the area surrounding Lake Saint-Jean, and created jobs for thousands of families [1]. This growth established the region as a critical node in the global supply chain for lightweight metals.

The reliance on hydroelectric power remains a cornerstone of the region's industrial identity. The availability of cheap energy allowed the smelting operations to remain competitive globally for decades, fostering a specialized workforce and a unique urban development pattern in Northern Quebec [1].

Aluminium production has been ongoing for 100 years in the Saguenay–Lac-Saint-Jean region.

The centennial of aluminium production in Quebec demonstrates how regional geography—specifically the availability of high-capacity hydroelectric power—can dictate industrial specialization. By anchoring a power-intensive industry like smelting to a renewable energy source, the region created a sustainable economic engine that transitioned from the era of Alcan to the modern operations of Rio Tinto.