Flames tore through an East Geelong house last Friday afternoon before Fire Rescue Victoria (FRV) crews brought the blaze under control.
A caller to Triple Zero (000) reported the fire just before 3.50pm, according to FRV.
“Crews arrived at the McKillop Street scene within three minutes, finding the house well alight,” an FRV spokesperson said.
More than 20 firefighters brought the fire under control just before 4.20pm.
“There was extensive damage to the house, but thankfully nobody was injured in the blaze,” the FRV spokesperson said.
“Nobody was home at the time the fire broke out.”
Witness Jerin Jacobs saw smoke billowing out of the roof as firefighters extinguished the blaze.
“I’m sure it was a very nasty fire,” he said.
“All the neighbours were out in the street to what had happened.”
FRV’s specialist fire investigators and Energy Safe Victoria conducted an investigation into the cause of the fire at the weekend.
“The investigation found that the fire was started by an isolating switch connected to a solar panel system at the house,” the FRV spokesperson said.