Owing to a shortage of generation capacity resulting from technical faults at some of its units, State-owned entity Eskom would implement stage 1 load-shedding from 17:00 on Tuesday.
Load-shedding would likely continue until 22:00.
Engineering News
https://www.engineeringnews.co.za/article/eskom-to-implement-load-shedding-from-1700-2015-05-26