Replacing South Africa’s aging and inadequate electricity generation capacity with renewable energy plants is an opportunity to spur economic growth and cut emissions, the effective head of a presidential climate change commission said. While many countries face the problem of having to idle fossil fuel-fired power stations to meet climate commitments, many of South Africa’s decades-old, coal-fired plants are due to close anyway, said Valli Moosa, deputy chairperson of the Presidential Climate Change Coordinating Commission.