Andre de Ruyter is the most important businessman in South Africa today. If the Eskom CEO can’t deal with its debt, its notorious inefficiency and the load-shedding problems, the whole country will suffer. And an explosion in Medupi this week. Stuff editor-in-chief Toby Shapshak is more interested in how De Ruyter plans to turn Eskom into a modern power utility. And yes, solar is in the mix.