Australia's home battery boom faces safety and policy challenges

In 2025 Australia saw a surge in residential battery installations, with the SunWiz report documenting 221,000 new home battery systems – more than triple the previous year – adding almost 5 GWh of storage and bringing the total installed fleet to over 450,000 units. By year‑end, roughly 4.6 % of Australian homes and 13 % of rooftop‑solar households had a battery, with New South Wales leading the market.

At the same time, renters and apartment dwellers, unable to install rooftop solar or licensed storage, are illegally connecting portable battery units directly to mains outlets. Experts warn that such plug‑in batteries, often not approved for the Australian market, can bypass safety devices, feed DC into AC circuits, and pose electric‑shock hazards for occupants and electricians. The regulatory framework has not kept pace with demand, prompting calls for updated rules that would permit safe balcony‑solar and plug‑in battery solutions.

Industry observers note that the rapid market growth, combined with safety concerns among renters, highlights a policy gap that could slow the broader transition to cleaner, more resilient energy for Australian households.