Eskom boss Jacob Maroga appealed yesterday for even greater power savings to avoid blackouts during winter.
Maroga, speaking at the World Economic Forum meeting in Cape Town, said Eskom had built up "strong" coal stocks going into winter and was up to date on maintenance. "But I think from the rest of society, there's a lot that can be done," he said.
"There's been movement in terms of saving but there's still a lot of opportunity. We need everybody's help."
Maroga said Eskom's margin of reserve power was still tight. "So if problems arise we can get load shedding."
He said he hoped the government would provide clarity "within weeks" on how the needed expansion of capacity would be funded.
Maroga said he would welcome the entry of private operators into the market, but this was unlikely to happen while power prices were kept artificially low.
"In an environment where you have a commodity that is the cheapest, and also the most scarce, there's a misalignment there," he said.