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CALGARY — Canada substantially boosted its renewable electricity capacity over the past decade, and has now emerged as the second largest producer of hydroelectricty in the world, a new report said Wednesday.

A report by the National Energy Board said that Canada generated 66 per cent of its electricity from renewable sources in 2015. Hydroelectric power accounted for roughly 60 per cent of electricity supply, generating around 79,000 megawatts in 2015.

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But as Canada aims to further boost its renewable capacity as part of its lofty climate goals, analysts are questioning hydro’s role in the future. Environmental activists have firmly opposed new large-scale hydro dams like BC Hydro’s Site C and Nalcor Energy’s Muskrat Falls Project in Labrador, which has hobbled development.

“Dams can interfere with fish migration, deplete oxygen in reservoirs, mobilize contaminants, and trap sediment that are important for maintaining downstream habitats including protecting deltas from erosion,” the NEB report said.