Can wind and solar energy carry SA's power grid?

Sabotage and further breakdowns at certain generating units have affected Eskom's capacity to keep the lights on. Load shedding is estimated to cost the country R500 million per stage per day, and as those costs rise, calls are mounting for government to declare a state of disaster at Eskom. Business Day TV spoke to one of the advocates for that move, Mark Swilling from the Centre for Sustainability Transitions at Stellenbosch University, and also discussed whether he thinks wind and solar energy could be South Africa’s saving grace.