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Engineers at the National Control Centre in Germiston monitor a map of the country's power grid. The giant screen can display all generating units in the grid, the distribution network and electricity coming from renewables like wind and solar. This is where load-shedding begins and the balancing act between demand and supply plays out
http://www.timeslive.co.za/thetimes/2015/02/11/inside-the-belly-of-the-beast
