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Grid infrastructureSouth AfricaEIR-0821

Explosion and fire at Klaarwater substation cut power across Durban

Mar 2018Published 15 Sept 2026Responsible editor: Chief Editor

SignificantElectrical
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersLow confidence
supply cut for about •• daysShown in the record →Full estimate
From the recordRoot cause hiddenFailed part hidden
Where
275kV Klaarwater major substation in Durban, South Africa
Operator
eThekwini Municipality
What
Explosion followed by small fire
Cause
Under investigation
Outcome
Widespread outage across 50 percent of the city

Companies named in the reporting of this entry (being named is not a finding of fault): eThekwini Municipality, Southern

What happened

An explosion occurred at the 275kV Klaarwater major substation in Durban, South Africa, causing a widespread power outage affecting around 50 percent of the city, including areas in the Northern, Western and Southern regions. The eThekwini Municipality confirmed the explosion was followed by a small fire, which was extinguished. Technicians were sent to the site to assess the damage and determine the cause. Power was restored to some areas relatively quickly while restoration continued elsewhere.

The municipality also had to address hoax images that circulated on social media falsely purporting to show the explosion, and it urged residents to reduce electricity usage to avoid overloading alternate circuits used to feed affected areas during restoration.

Contributing factors

The cause of the explosion was not stated in the source; the municipality said technicians were still investigating at the time of reporting.

Lessons learned

  1. A 275kV substation explosion can cut supply to half a city, so operators should verify redundant feed paths to all major load centres.
  2. False images spread fast after a substation fire, so the operator must issue clear updates within the first hour.
  3. Alternate circuits used during restoration can overload, so operators should request reduced demand from users until full capacity returns.

More lessons on outages, backup supply and restoration, spacing, layout and fire spread, maintenance, inspection and ageing assets, from every incident on the register.

Not yet known

  • Exact cause of the explosion
  • Equipment model and age
  • Duration of full power restoration
  • Cost of repairs and lost supply

This entry is updated when these are reported. Get an alert for the next one like it.

Source

citizen.co.za

Other entries that name Klaarwater Durban

Published 2026-09-15. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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Chart to reuse with this story: Grid infrastructure incidents in South Africa, by year, free with a credit (PNG).

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