An audit of the Clean Energy Regulator found that there are thousands of potentially unsafe and poorly installed systems on rooftops that are also likely not producing clean energy.

The audit conducted by the Australian National Audit Office reveals one in five Australian homes has solar panels but investigations found that one in six solar installations was substandard and one in 30 is unsafe.

Acting Commander of the Fire Investigation and Analysis at Melbourne’s Metro Fire Brigade told the ABC there has been 25 fires in the last five years started by rooftop solar systems.