Reuters: South Africa, which relies on coal for 90 percent of its electricity, will need to first focus on ensuring sufficient power supply before moving full-scale to fight climate change, a minister said on Tuesday. South Africa, the continent’s largest economy and the world’s 12th largest carbon emitter, has been struggling to meet its fast-rising power demand and has chosen to invest in new coal-fired power plants to fill the power supply gap. The country plans to diversify its …