Power utility Eskom on Wednesday called on consumers to switch off geysers, pool pumps and all non-e.
More than 200 workers are still on strike at the Kruger National Park, SA National Parks (SANParks) said on Monday.
SANParks spokesman Reynold Thakhuli said 60 workers had returned to work, but more than 200 workers, who had left their unions, were still striking.
The workers went on strike at the beginning of February.
“We urge them to come back to work as we still apply our policy of no work, no pay.”
The workers had abandoned their unions — the Health and Other Service Personnel Trade Union of SA (Hospersa) and the SA Commercial Catering and Allied Workers’ Union (Saccawu) — over pay disparities and other labour issues.
“We condemn the violence of workers, acts such as disturbing the peace, littering and asking Kruger Nationlal Park visitors for money.”
Thakhuli said the park had implemented a lock-out procedure.
Striking workers were not allowed at KNP facilities until they had resumed their duties.
“The KNP operations are not disrupted. We have rangers and volunteers who are ready to welcome visitors to KNP,” Thakhuli said.
He said all workers at the Mapungubwe National Park in Limpopo had returned to work after a six-week labour dispute.