Northcliff power update: City Power tests new Mark Avenue mini-substation
City Power said on 10 November that it had installed a replacement mini-substation serving Mark Avenue in Northcliff, Johannesburg. The utility was testing the equipment before starting restoration. Its update did not confirm that customers were back on regular supply.
Status of this incident
Power outage confirmed
Last known status: confirmed by the source · City Power says the Mark Avenue replacement is installed and under test. A return to regular supply remains unconfirmed.
Source moment: 10 Nov 2026, 12:25 UTC (14:25 local time)
In 20 seconds
The Mark Avenue replacement was installed and under test when City Power posted its update.
City Power said a generator had temporarily supplied customers for about three weeks.
The utility gave no test result or confirmed switch-on time.
What changed for customers on Mark Avenue
City Power said a generator temporarily supplied customers for about three weeks after a mini-substation malfunction. The utility dates the fault report to 14 October, without giving an exact onset time. The temporary generation means the October report does not establish a continuous loss of power from then until November.
What the sources tell us, and what they do not
- Location in the installation update
- Mark Avenue, Northcliff
- Latest stage reported
- Replacement installed; tests underway.
- Switch-on time
- No actual switch-on confirmed.
What City Power said about testing and restoration
At 10:09 SAST on 10 November, the utility posted that it had isolated the Northcliff West distributor for four hours to begin installation. That was the work window stated in the notice. It did not confirm when installation work ended or when customers returned to regular supply.
At 14:25 SAST, City Power reported that installation was complete and the replacement was being tested. The update gave no customer count or test result. It describes equipment serving Mark Avenue and does not establish the supply status for other parts of Northcliff.
Where to check for updates
If your address is still without electricity, check the latest City Power notices or report the fault to the utility. Our power outage essentials guide covers lighting and communications. The runtime calculator can help you estimate how long a battery could power essential devices.