In December, Australian households and small businesses saw a surge in rooftop solar capacity and home battery installations, adding a record 4.3 gigawatt hours of storage capacity in 2025. The market was booming for both residential and commercial scale rooftop systems, with a record monthly capacity of 328 megawatts added in December alone. The home battery market thrived, with 42,000 new systems registered in December and a total of 184,000 installed in 2025. Changes to battery rebates are expected to impact demand in early 2026, as the average size of rooftop solar systems has increased to 9.64 kW, reflecting a trend towards self consumption.