Released: April 2026
2025 wasn’t just a growth year for Australian batteries — it was a market transformation. A record number of residential battery systems were installed, delivering a huge amount of storage capacity. We’re talking a threefold increase in system count and a fivefold increase in capacity versus 2024.
The Cheaper Home Batteries Program didn’t just boost volumes — it fundamentally changed what Australians buy. Average system sizes nearly doubled. The ESS-to-PV attachment rate soared. And batteries have become mainstream now so many Australian homes have a battery.
SunWiz’s Australian Battery Market Report 2026 is the most comprehensive analysis of this transformation. With 17 years of industry leadership, we provide the data, analysis, and forecasts that the industry’s leading manufacturers, retailers, investors, and policymakers rely on to make decisions.
2025 was the year Australia’s battery market went mainstream. A record 221,000 residential battery systems were installed — a threefold increase on 2024 — delivering 4,790 MWh of new storage capacity. Today, 4.6% of Australian homes have a battery installed.
But the headline numbers are only the beginning. The Cheaper Home Batteries Program didn’t just boost volumes — it fundamentally reshaped what Australians buy, which brands are winning, and where the opportunities are heading next.
The 2026 report covers the full picture: state-by-state penetration analysis, manufacturer and retailer market share (including the fastest brand disruption we’ve ever tracked), pricing by brand and system size, the first SunWiz x Orkestra C&I battery census, payback analysis, and our 2026 forecast.
SunWiz is the industry’s preeminent market analyst and trusted voice. Since 2009, we’ve been the go-to source for market analysis and insights, trusted by leading manufacturers, retailers, installers, and financial stakeholders. We’ve been authoring Annual Battery Market Reports in Australia since 2015.
