An unexpected build up of algae on a lake-water intake system used for cooling has forced Ontario Power Generation to temporarily shut down one of its Pickering nuclear reactors until the fast-growing green muck is cleaned up.Any nuclear reactors built in Canada are, more than likely, going to be built along the great lakes (whose water levels are dropping and becoming warmer with climate change) or possibly along the Athabasca (which is similarly threatened.)
Experts say bad-smelling blooms of Cladophora algae are linked to warmer water temperatures and are likely to get worse as a result of global warming and high phosphorous levels caused by lawn fertilizers, agricultural runoff and detergents entering the lake.
People don't think of the number of inputs nuclear power takes -- daily use of fossil fuels to mine uranium being just one, but also vast amounts of cold water for cooling. If the available water is too little, or too warm, the reactor has to shut down.
Solar and wind do not face similar constraints.