The problems that have been plaguing South Africa’s power system continue, with the state power utility saying the rolling blackouts may last until late this evening.

Eskom was forced to install the rolling blackouts for the first time in almost six years, the result of which has left rail networks and banks having to use emergency generators after heavy rains soaked power station coal supplies particularly in the eastern province of Mpumalanga.

Eskom, which has been aggressively trying to build new power stations to ease its thin supply margins, said it was reducing nationwide power demand by 4,000 MW, or around 10 per cent of the grid’s capacity.