Although loads have been dropped on Levels 1 and 2 in the past few weeks, Eskom announced on Wednesday that it will switch to Level 4 from 2pm to 10pm.
In a statement by Eskom on At the levels of load shedding, the utility said that level 4 will double the frequency of level 2 shutdowns.
Eskom said that this means that customers will need 12 times over a four-day period for one Load shedding is scheduled for two hours in a row or twelve times over a period of eight days for four hours each.
The utility company said that level 1 enables the shutdown of up to 1,000 MW of the national load. Level 2 enables the reduction of up to 2,000 MW.
Level 3 enables the reduction of up to 3,000 MW of the national load and level 4 enables the reduction of up to 4,000 MW.
Eskom said that level 1 requires the least amount of load shedding, or three times over a period of four days for two hours each time.
When Eskom switches to level 2, the power goes out, which means that the frequency of Level 1 is doubled and customers perform load shedding six times on four days for two hours each.
Level 3 increases the frequency of level 2 by 50%, which means that customers can load nine times on four days for two hours each time be scheduled for load shedding. Level 4 is explained above.