Stage two rolling power cuts will be implemented on Friday morning, power utility Eskom said.
The power outages would be from 8am until 10pm, Eskom said on its official Twitter account.
Stage three power cuts were implemented on Thursday from 4pm to around 11pm.
Stage one allows for up to 1GW of the national load to be cut, stage two for up to 2GW and stage three for up to 4GW. — Sapa