Suspected sabotage causes transformer fire at Eikenhof substation, Johannesburg
Aug 2018Published 16 Sept 2026Responsible editor: Chief Editor
- Where
- Eikenhof substation south of Johannesburg
- Operator
- City Power
- What
- Transformer fire suspected as sabotage
- Cause
- Suspected sabotage
- Outcome
- Power expected restored within 24 hours
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Companies named in the reporting of this entry (being named is not a finding of fault): City Power
What happened
A fire broke out at the Eikenhof substation south of Johannesburg, cutting electricity to surrounding residential and business areas and disrupting water supply, since the substation powers a Rand Water facility that pumps water to about 40% of Johannesburg and parts of the West Rand and Rustenburg. City Power officials said video footage showed the fire originating outside the transformer and that the transformer appeared to have been deliberately damaged so that it would leak oil onto the fire, which the Johannesburg mayor said was inconsistent with an electrical fault.
The mayor described the incident as possible sabotage and referred the matter to the city's forensic investigation unit and police. Engineers worked overnight to install a replacement transformer, with power expected to be restored to residential areas and Rand Water pumps within about 24 hours.
Contributing factors
City Power officials suspected deliberate damage to the transformer, based on video evidence showing the fire starting outside the unit and oil leaking onto the flames, which the mayor said was inconsistent with a normal electrical fault; the matter was referred for criminal investigation as possible sabotage.
Lessons learned
- A substation transformer fire started by external damage can leak oil and spread quickly, so operators should fit external impact sensors and automatic oil shut off valves.
- A substation outage that stops water pumps for 40 percent of a city needs physical barriers and 24 hour camera review, because video can show if damage was deliberate.
- A substation transformer fire can be replaced overnight if spare units are kept ready, so operators should store matched spares near sites that feed critical water pumps.
More lessons on detection and monitoring, maintenance, inspection and ageing assets, from every incident on the register.
Not yet known
- Exact cause after police review
- Transformer model and age
- Cost of damage and replacement
- Duration of full supply recovery
This entry is updated when these are reported. Get an alert for the next one like it.
Source
Other entries that name Eikenhof
Published 2026-09-16. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.
