Denman Prospect residents fear their homes could burn after a component of the solar power system installed across Australia's first mandated solar suburb caused a fire that significantly damaged a display home.
An unoccupied Rawson Homes display home caught fire on Kondelea Way about 10.30am on October 13, with the solar isolator switch in the garage identified as the cause.
ACT Fire and Rescue's fire investigation report said the blaze caused an estimated $600,000 worth of damage to the display home, which Rawson Homes general manager Craig Moore said would be demolished and rebuilt.
The fire has sparked concern among residents who are worried there could be a repeat of the blaze in their own homes. But the ACT government has described the blaze as an isolated incident, and says it will not be investigating further.
ActewAGL partnered with Denman Prospect developer Capital Estate Developments to supply solar to the first 350 houses in the new suburb, where each household must have a three-kilowatt solar power system as a minimum.
Anita Chatfield and Lizzie Christiansen, who live on the same street as the display home, called for an independent review of systems across the suburb to ensure they were safe.
Both women said components of the solar power systems in their garages have heated up to a point where they were worried a fire could break out.
"It's like touching a kettle after it's finished boiling," Ms Chatfield said.
"I leave the garage door open a bit to get some air in because I get quite concerned about [whether there could be a fire].
"It freaks me out a bit. It's scary."
Ms Christiansen said she had experienced "lots of problems" with the system in her garage, across the road from Ms Chatfield's.
Her isolator and inverter have been replaced because of issues including the solar power system failing to work, but she said the replacement components in her garage still heated up to a worrying level.
Ms Christiansen said she was impressed with Capital Estate Developments' commitment to solar power, but not with the system it had supplied for Denman Prospect homes.
"The bills are huge," she said.
"It hasn't saved me any money at all. It's about the same, or worse."
Ms Christiansen said the systems should be independently reviewed so residents knew what they were dealing with.
"We don't know whether [the fire] was caused by the installation, the manufacturing or something else," she said.
"I'm thinking, 'Well, could it happen here?"
A Capital Estate Developments spokeswoman referred the Sunday Canberra Times' inquiries to ActewAGL.
An ActewAGL spokeswoman said more than 2000 solar power systems purchased through the company were installed in homes across the ACT and surrounding parts of NSW.
About 170 systems had been installed so far in Denman Prospect, she said, but it was unclear how many of those contained the same isolator switch as the display home because a different switch had been used since October 2017.
The spokeswoman said while the Denman Prospect solar power systems were purchased through ActewAGL, they were installed by Clean Energy Council-certified contractors.
"This is the first issue of its kind related to an ActewAGL-purchased solar system," she said.
"We are taking this matter seriously and will continue to engage with the ACT electrical regulator to ensure peace of mind for the Denman Prospect community."
The spokeswoman said an ACT government electrical inspector looked at the system in question on June 25 last year and found no defects.
An ACT government spokeswoman said the Denman Prospect fire was an isolated incident and would not be investigated further.