Australian households have installed as many home batteries in the six months to the end of last year as they did across the previous five years combined, new research from the Clean Energy Council reveals.
The Clean Energy Council’s bi-annual Rooftop Solar and Storage Report (Jul-Dec 2025) shows more than 183,245 battery units were sold in the second half of 2025 alone—a four-fold increase compared to the same period in 2024.
This is equivalent to 99% of sales made between 2020 and 2024 and brings the total number of battery installations across Australian households to 454,753 as at the end of last year.
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The report found rooftop solar installations continued to shine brightly, with more than 139,080 units installed in the latter half of 2025. Rooftop solar installations cooled slightly during 2025 (254,664 systems, down from 300,375 in 2024), as they approach critical mass on the rooftops of almost a third of Aussie homes and as consumer demand shifts towards energy storage.
Overall, Australia’s share of rooftop solar continued to increase its contribution to the nation’s electricity supply last year, making up 14.2% of the energy supplied to the grid in 2025 and almost doubling over the last five years since 2020, when it was at 7.2%.
The report reveals Australians installed 2.6GW of new capacity on their rooftops during 2025—just short of the capacity of an Eraring coal-fired power station (2.9GW), the largest in the country.
Among the states and territories, New South Wales continues to lead the nation’s rooftop solar installed capacity (8GW), while Queensland continues to lead in the number of installed systems (1.16 million).
Clean Energy Council CEO Jackie Trad said that while these achievements are a testament to incentives such as the Federal Government’s Cheaper Home Batteries program in tandem with other state-based programs.
“Our biggest power station now resides on the rooftops of more than 4.3 million households, which is helping to drive downward pressure on power bills for consumers and businesses, with less reliance on expensive gas or unreliable coal to power our grid,” Trad said.
“Australia’s rooftop solar uptake is a national triumph and now accounts for 28.3GW of installed capacity, eclipsing that of the country’s entire fleet of coal-fired generators (22.5GW). It not only leads our national renewables rollout but also leads the rest of the world on a per capita basis.
“We know Australians have long had an appetite for energy independence to drive down bills and as a result have been adopting solar and battery technology at record pace for the last several years. However, recent government home battery programs have strapped a rocket to this momentum, driving even stronger uptake over the past six months.
“We’ve seen phenomenal uptake of home batteries in Australia, with installations more than doubling in the space of one year. This increase in demand has also driven a surge in new batteries and inverter products available in the market, giving customers more choice than ever,” she said.
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However, many households are not getting the full value of their solar and batteries unless they are part of a virtual power plant.
“We know energy customers who sign up to a Virtual Power Plant (VPP) are currently paying the lowest power bills in Australia, according to the most recent analysis by the ACCC. That’s why encouraging and incentivising stronger participation in VPPs by Australian households and businesses is more important than ever,” she said.
The ACCC’s Inquiry into the National Electricity Market report (July 2025) found that households with rooftop solar and a battery pay on average $323 per quarter for their energy bills but can save an additional $106 if they are signed up to a VPP, bringing them down to $217 per quarter on average.
