Power will be cut in parts of Cape Town at the weekend while a substation is upgraded, the city said on Thursday.
The outage would last from 10pm on Saturday until 8am on Sunday, spokesperson Kylie Hatton said.
It would affect Capri Village, Sunnydale, Sun Valley, Fairy Knowe, Noordhoek, Lake Michelle and Monkey Valley.
Hatton said the outage formed part of the R21-million upgrading of the area's electricity infrastructure, which was the result of increased demand from the Masiphumelele township, a retirement village, a new housing development and a future housing development.
"For safety reasons customers are advised to treat electricity installations as live for the full duration of the interruption as the electricity supply may be restored at any time without warning," Hatton said.