Decommissioning of Duvha, one of 14 coal-fired power stations still anchoring the national grid, has been delayed to at least 2035. Photo: Ihsaan Haffejee An unrehabilitated coal mine near the Duvha Power Station. Photo: Ihsaan Haffejee South Africa’s latest coal-fired power station, Kusile, took decades to finish building, cost hundreds of billions of rand and became one of the most controversial infrastructure projects in the country’s energy …