More than one in three households in the Murraylands now has a solar power system, according to the Clean Energy Finance Corporation.
Eleven hundred local families have installed solar panels over the past two years, bringing the total to more than 8000.
The uptake has been highest in Callington and Mypolonga, where more than half of all houses now have rooftop panels.
Fewer Mallee residents have had a chance to benefit from the energy revolution – the uptake rate is more like one in four houses east of the River Murray.
But a revolution it has been nonetheless, says Clean Energy Council chief executive Kane Thornton.
An average of six solar panels were installed on Australian homes every minute, he said, and the nation now had the highest uptake of household solar power in the world.
"Homes with rooftop solar installed are saving an average of about $540 per year on their electricity bills," he said.
"Solar is a clear way for consumers to take control of their power consumption and cut costs, and it’s growing quickly by word of mouth."
Rooftop solar systems also helped reduce strain on the electricity grid at times of peak demand, such as hot summer days when everyone's air conditioners were on, he said.
However, he urged consumers to take their time when making a decision to invest in solar.
"Installing solar is a big decision," Mr Thornton said.
"By choosing Clean Energy Council accredited Installers and approved solar retailers, customers can be sure their new system is installed correctly and safely and provides all the expected long-term benefits."
Before installing solar panels
- Consider your energy needs: check your power bill or visit www.energymadeeasy.gov.au
- Choose the right-sized system
- Understand the financials: feed-in tariffs, green energy certificates and the rate you pay for power