SA’s largest trade union federation, Cosatu, says it does not believe that the rolling electricity blackouts that have hit the country are manageable, calling the situation a crisis.

Eskom on Monday announced it had moved to stage 6 load-shedding, cutting 6,000MW  from the grid as it grappled with a technical fault at its new Medupi power station, a plant that has run over costs and timelines. It was the first time that Eskom, which is a financial black hole and has R450bn of debt, has removed so much power from the grid...