Eskom is investigating a fire that broke out at its Kusile Power Station in Mpumalanga on Friday.

According to Eskom the fire started at the Unit 3 fabric filter plant between 5:30pm and 6:30pm but was extinguished immediately.

The power utility said no injuries were reported as a result of the fire, adding that the incident is under investigation.

In December last year, fire was detected in an area around the two conveyer belts that supply coal to the Kendal power station, which is also located in Mpumalanga.

At the time, Eskom said the fire did not impact the supply of electricity.