{"id":386,"date":"2025-10-07T05:48:42","date_gmt":"2025-10-07T05:48:42","guid":{"rendered":"https:\/\/aykasolar.com.au\/news\/?p=386"},"modified":"2025-10-07T06:13:28","modified_gmt":"2025-10-07T06:13:28","slug":"whats-behind-the-battery-market-shake-up","status":"publish","type":"post","link":"https:\/\/aykasolar.com.au\/news\/whats-behind-the-battery-market-shake-up\/","title":{"rendered":"Rooftop Solar on the Rise: What\u2019s Behind the Battery Market Shake-Up?"},"content":{"rendered":"
\"Rooftop<\/figure>\n\n\n

<\/p>\n\n\n\n

Australia\u2019s rooftop solar<\/a> market bounced back strongly in September 2025, with 237 MW of small-scale PV installed \u2014 a 16.6 per cent rise over the previous month \u2014 as many households turn to solar-plus-storage systems.<\/p>\n\n\n\n

At the same time, registrations of small-scale battery energy storage systems (ESS) reached 639 MWh \u2014 up 55 per cent month-on-month, and equivalent to three-quarters of all battery capacity installed in 2024 in a single month. <\/a><\/p>\n\n\n\n

SunWiz Managing Director Warwick Johnston said the data busts early fears of a storage plateau, noting a clear shift in consumer behaviour. \u201cAfter the initial rush of battery-only installations, PV-plus-ESS is now the dominant choice,\u201d he said. <\/a><\/p>\n\n\n\n

While small-scale solar is recovering, overall volumes remain below historical norms. The 237 MW installed in September is still about 10 per cent under the same month in 2024, and year-to-date, they are 15 per cent behind last year\u2019s pace. <\/a><\/p>\n\n\n\n

All states recorded gains in September. Western Australia led with a 28 per cent month-on-month increase, while New South Wales saw the most considerable absolute MW uplift. <\/a><\/p>\n\n\n\n

On the system-size front, the 75\u2013100 kW PV range grew strongly, but notable gains were also recorded in sub-3 kW systems \u2014 likely reflecting extensions of existing systems to pair with batteries. <\/a><\/p>\n\n\n\n

There was also increased uptake in 8\u201310 kW and 15\u201320 kW systems. Overall, the national average PV size rose to 10.4 kW (from 10.16 kW in August). <\/a><\/p>\n\n\n\n

Battery sizes climbed too \u2014 in September the average stood at 24.40 kWh (vs. 21.36 kWh in August and 19.84 kWh in July). <\/a><\/p>\n\n\n\n

In terms of installations by state, NSW led with 238 MWh, followed by Queensland (130 MWh) and Victoria (107 MWh). <\/a><\/p>\n\n\n\n

SunWiz noted that the 30\u201350 kWh battery segment saw the most growth, driven by users seeking to maximise the federal battery rebate. Interest is also rising from small businesses. <\/a><\/p>\n\n\n\n

Related developments in the solar-and-battery sector<\/strong><\/h4>\n\n\n\n