Darlington Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Clarington, Ontario. The facility derives its name from the Township of Darlington, the former name of the municipality in which it is located. The Darlington station is a large nuclear facility and comprises 4 CANDU nuclear reactors located on the northern shore of Lake Ontario, having a total output of 3,512 MWe (capacity net) when all units are online. It provides about 10 percent of Ontario's electricity needs, enough to serve over two million people. It is arguably one of the most advanced nuclear generating stations in the world. As of 2006, four additional reactors totalling 4,800 MW are under construction.