The belief that renewable energy is the sole answer to South Africa’s energy crisis is irrational, National Union of Metalworkers of South Africa (NUMSA) general secretary Irvin Jim has said.

“You can’t run a factory by wind or sun. What happens when there is no wind and the sun is behind a cloud? It is like lying to children by telling them you can do a braai with a torch,” he quipped to delegates attending the Metal Industries Collective Bargaining Summit in Johannesburg on May 25.