Home Batteries in Australia

The Tesla Powerwall 3 is a 13.5 kWh integrated battery-and-inverter system costing roughly A$12,500 to A$15,500 installed in Australia as of August 2026. It suits households wanting whole-home backup and a polished app, but its fixed size and premium price mean modular rivals often deliver cheaper storage per kWh.

Sigenergy's SigenStor is a modular, stackable battery-inverter system (8 to 48 kWh) that has become Australia's best-selling battery in 2026. Installed prices start around A$9,000 for 8 kWh. It wins on flexibility, an excellent app and integrated EV-charger options, though the brand is young and its long-term support record is unproven.

Sungrow's SBR and newer SBH batteries are modular LFP systems (9.6 to 40 kWh) from one of the world's largest inverter makers. At roughly A$900 to A$1,100 installed per usable kWh they balance price, proven reliability and wide installer familiarity, making them the default safe choice for many Australian homes.

GoodWe's Lynx Home series are modular LFP batteries (6.6 to 28.8 kWh) that pair with GoodWe hybrid inverters at some of the lowest installed prices in the Australian market, from about A$7,500 for 6.6 kWh. A solid budget-to-midrange pick, with fewer premium features than Sigenergy or Tesla.

BYD's Battery-Box Premium HVS/HVM towers are modular LFP batteries (5.1 to 22.1 kWh per tower) from the world's biggest EV maker. Proven over a decade in Australia and compatible with many third-party hybrid inverters (notably Fronius), they cost roughly A$900 to A$1,000 per usable kWh installed.

Alpha ESS builds all-in-one and modular storage systems (SMILE range, 2.9 to 30+ kWh) with an Australian office since 2016 and a large installed base. Pricing sits in the value tier at roughly A$850 to A$1,000 per usable kWh installed. A dependable mid-market choice, though efficiency and app polish trail the leaders.

Fox ESS sells aggressively priced modular LFP batteries (EP and ECS ranges, 5.2 to 40+ kWh) that undercut most rivals at roughly A$750 to A$900 per usable kWh installed. The hardware is capable, but surge output limits, a young brand history and patchy support reports make it a price-first rather than peace-of-mind choice.