Eskom announced on Thursday that it will implement Stage 6 load shedding from noon until further notice.
"This is due to a high number of breakdowns since midnight, as well as the requirement to strictly preserve the remaining emergency generation reserves," a brief statement by the power utility read.
This comes after Eskom plunged the country into Stage 4 on Wednesday.
The state-owned power utility said it will publish a full statement in due course.