The Darlington nuclear station, located in Toronto, Canada, had its construction completed in 1993. Its four units with a total power of 3,524 megawatts (MW) provide about 20% of the electricity needs of the province of Ontario, enough for a city with 2 million people. Darlington uses natural uranium as fuel to generate electricity from the heat created by nuclear fission.
More than 250 thousand tons of Portland cement and 650 thousand m³ of concrete from Votorantim Cimentos were used in its construction. The buildings that house the four reactors were built with heavily reinforced concrete. Its inner walls protect employees from radiation during operation.