Australia Hits Record for Rooftop Solar as Homeowners Race to Beat Battery Rebate Changes
Australia’s rooftop solar sector has surged to an unprecedented high, with a record 341 megawatts (MW) of small-scale solar capacity installed in March 2026. This represents a 19% jump from the previous month and puts the nation on track for a potentially record-breaking year for solar energy uptake.
The driving force behind this remarkable growth appears to be Australian homeowners rushing to install solar batteries before significant changes to a key federal government rebate take effect on May 1, 2026.
Industry analyst firm SunWiz, which released the latest data, highlighted the federal government’s Cheaper Home Batteries Program (CHBP) as a primary catalyst for the surge. SunWiz Managing Director Warwick Johnston noted that the market is already 16% ahead of the same point in 2025.
“Up until now, we have never had to report on PV volumes as high as 341 MW,” said Johnston. “By turbocharging battery uptake, it’s pulling larger solar systems along with it, since bigger batteries demand bigger panels, sending average system sizes and total registered capacity to all-time highs.”
The data shows a corresponding boom in battery installations, with consumers scrambling to maximise their savings under the current rebate structure. This has pushed the average battery size to a new record of 40 kWh, as households opt for larger systems while the incentive is most favourable.
What’s Changing with the Solar Battery Rebate?
From May 1, 2026, the rebate provided under the Cheaper Home Batteries Program will shift from a flat ‘per kWh’ discount to a tiered system based on the battery’s size. The federal government states this change is designed to maintain an approximate 30% discount across various battery sizes.
However, the impending deadline has created a clear sense of urgency. The program, which provides Small-scale Technology Certificates (STCs), has been instrumental in making battery storage more affordable for thousands of Australians.
According to the Clean Energy Regulator, the changes mean the rebate will decline every six months at a higher rate and will be tiered. Homeowners considering a solar battery installation are being urged to confirm with their retailers whether installation can be completed before the deadline and if their quoted price will be honoured if delays occur.
Unprecedented Momentum in Large-Scale Solar
While rooftop solar is breaking records, the utility-scale sector is also experiencing significant momentum. In the past week alone, several major projects have hit key milestones.
In New South Wales, Spark Renewables secured final planning approval for its massive Dinawan Solar Farm. The $1.35 billion project, located near Coleambally, will feature an 800 MW solar array—comprising around two million solar panels—and a 356 MW / 1,574 MWh battery energy storage system, significantly boosting grid stability in the South West Renewable Energy Zone.
Meanwhile, the South Australian government has opened a tender for renewable energy projects across a vast 11,000 square kilometre area in the state’s Gawler Ranges East and Whyalla West regions. The government is seeking proposals for large-scale solar, wind, and storage projects, with the areas estimated to have the potential to power over 500,000 homes.
Additionally, construction has officially commenced at the $900 million Blind Creek Solar Farm and Battery project in Bungendore, NSW, which will combine 300 MW of solar generation with a 243 MW battery.
These large-scale developments, coupled with the extraordinary consumer-led boom in rooftop solar and batteries, underscore the accelerating pace of Australia’s transition to renewable energy in 2026. For homeowners, however, the clock is ticking to take full advantage of the current battery incentives.