Power and water utilities City Power, Johannesburg Water and Rand Water have advised that an emergency power outage will be implemented at the Eikenhof substation from 08:00 to 16:00 on November 17 and that it will impact on the supply of water in parts of Johannesburg. The outage is necessary for City Power to make urgent repairs to and conduct maintenance at the substation, where a recent assessment found defects, including hot connections on the two transformers that supply power to Rand Water.