Australia’s Rooftop Solar Sets Its Best Month on Record / Industry News / By Finulent Solutions Australia installed more rooftop solar in April than in any month on record, powered by a home battery boom. Australia’s rooftop solar market added 442 megawatts in April. A battery rebate deadline had much to do with this but the story is more interesting than a single cause. SunWiz Managing Director Warwick Johnston put it plainly: The market is now running 35% ahead of where it was this time last year. A program that outgrew itself The Cheaper Home Batteries Program launched in July 2025 with modest ambitions. And it ballooned quite instantly. Daily installation rates jumped from around 200 systems to over 1,500 within months. And by December, Canberra announced a major expansion, targeting over two million installations by 2030. The program offers around 30% off the upfront cost of a home battery. That’s a meaningful discount in a market where a quality 10-15 kWh system typically runs $10,000–$15,000 installed. That combination of scale and subsidy made Australia one of the most active home storage markets in the world. Rooftop solar following suite The battery rush pulled rooftop solar along with it. Bigger batteries need arrays to charge them. A 40 kWh system behind a 6.6 kW rooftop won’t go very far. So as households locked in large-format storage, they upgraded solar at the same time. “Australia is a solar nation — we’ve got more solar on our roofs than pools in our backyards, and we want to match that success with home batteries to cut bills for everyone, for good.” -Chris Bowen, Minister for Climate Change and Energy. The result was the strongest month for rooftop solar in Australian history. Registrations hit 442 MW in April. Nearly doubled over April 2025 and up from 31% in March. The 20-30 kW segment nearly doubled month-on-month, and the 15-20 kW band grew 61%. The national average system size for the month reached 11.35 kW, well above the 6-10 kW range that’s been typical in recent years. Growth was nationwide too. NSW added 143 MW alone, up 35%. The ACT rose 62%, Queensland 36%. The only soft spots were the smaller residential brackets. 3-6 kW and 6-8 kW systems dipped slightly. The month belonged to the larger end of the market. The market going ahead The CEC’s (Clean Energy Council) Con Hristodoulidis noted that rooftop solar can save households up to $1,500 a year on bills. Double that when a battery is added. The question is what this volume of distributed storage means for the grid. Australia already has more rooftop solar per capita than any other country. Adding hundreds of thousands of home batteries changes how networks need to be designed and managed. Particularly around export controls, virtual power plant integration, and the evening peak that solar alone can’t address. That’s where the real engineering challenge sits.
