Repairs to the Majuba power station have added about 1,800MW to the grid, reducing the need for controlled power outages, Eskom said on Thursday.
“We are using mobile feeders to deliver the coal to the units at Majuba. They are basically temporary conveyer belts,” spokesman Khulu Phasiwe said.
A silo at Majuba collapsed last year, triggering a wave of rolling blackouts.
Mr Phasiwe said the repairs to Majuba and other units were the main reason Eskom had not had to implement load-shedding so far this week.
Majuba was now able to generate about 3,000MW compared with the 600MW to 1,200MW it was producing after the collapse, he added.
Public Enterprises Minister Lynne Brown, who announced the repairs to Majuba on Wednesday, said the plant was now able to provide full power during the morning and evening peaks.