Zuma officially opens Unit 6 at Medupi
Unit 6 at the Medupi Plant has officially been opened, adding nearly 800 megawatts to the strained grid.
Eskom executives and the president have also been taken on a tour of the plant which is set to be completed by 2017.
Construction at Medupi has been delayed since 2013 by lengthy strikes and other work stoppages.
The Greenfield coal-fired Power Plant was first synchronised to the grid in March, helping to avoid load shedding.
Zuma has described the opening of Unit 6 as a critical milestone in developing new generating capacity for the country.
"The Medupi Power Station, whose construction started in May 2007, is the largest coal-fired power station in our country. It will also become the world's largest dry cooled coal-fired power station."