The fire at Tembisa substation has been extinguished and cooling of transformers is now taking place.
Power utility Eskom dispatched a team of technicians to the Tembisa substation which caught on fire on Wednesday.
"Eskom has dispatched its technicians to attend to an Allandale substation that is currently on fire.
"The cause of the fire is not known at this stage," spokesperson Khulu Phasiwe said in a tweet earleir on Wednesday.
This fire will affect electricity supply to Ivory Park and parts of Tembisa.
Ekurhuleni emergency services spokesperson William Ntladi confirmed that there had been no casualties reported as a result of the fire.
One of the transformers reportedly caught fire, setting off the blaze at the station. Ntladi said the cause of the fire is yet to be determined.
By the end of the day, Ntladi confirmed that fire fighters were successful in extinguishing the blaze.
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