Electricity is the main energy source used to produce aluminum through the process of electrolysis. The hydroelectricity consumed by our Québec smelters is renewable. Our plants also use some fossil fuels.
Electricity consumption per tonne of aluminum produced increased at the Baie-Comeau Smelter due to the less efficient Söderberg technology. Efforts to reduce the anodic effects in these pots have, however, resulted in a decrease in the amount of overall energy consumed per tonne of aluminum.