Short answer: Sungrow SBR is the cheapest at $664 to $938/kWh but requires a Sungrow inverter. FoxESS ECS is a close second on value at $750 to $1,106/kWh. Tesla Powerwall 3 ($15,000 to $17,000) is best for retrofitting and whole-home backup. BYD offers the most inverter flexibility. Enphase has the longest warranty at 15 years but the highest price per kWh.
Prices shown are installed costs before any rebates. The federal Cheaper Home Batteries Program takes about $3,610 off a 14 kWh battery, and state programs in the ACT and WA can add to that, but the exact amount depends on your location, battery size and installer. Always get a specific after-rebate quote from your installer.
Best for: Whole-home backup, retrofitting to existing solar
Best for: Flexibility with inverter choice, modular expansion
Best for: Best value, new installations with Sungrow inverter
Best for: Value-focused new installations, FoxESS inverter owners
Best for: Enphase microinverter owners, longest warranty
Prices are installed costs before rebates as of February 2026. The federal Cheaper Home Batteries Program takes about $3,610 off a 14 kWh battery; the exact amount depends on the battery's usable capacity, and it varies with your location and installer. State rebates in the ACT ($3,500 to $5,250 low-interest loan) and WA ($1,300 to $3,800 subsidy) may also apply. VIC and NT battery rebates have closed. FoxESS pricing is based on installer quotes for the ECS series paired with the FoxESS H3 hybrid inverter.
Federal battery rebate: about $3,610 on a 14 kWh battery. One Why Solar Approved installer, one free written quote, and fifteen minutes with a solar expert before you sign.
Best for: Whole-home backup, retrofitting to existing solar
Installed price
$15,000 to $17,000
$1,111 to $1,259 per kWh
Best for: Flexibility with inverter choice, modular expansion
Installed price
$8,500 to $14,000
$773 to $1,045 per kWh
Best for: Best value, new installations with Sungrow inverter
Installed price
$7,500 to $10,500
$664 to $938 per kWh
Best for: Value-focused new installations, FoxESS inverter owners
Installed price
$7,800 to $11,500
$750 to $1,106 per kWh
Best for: Enphase microinverter owners, longest warranty
Installed price
$14,000 to $15,000
$1,389 to $1,488 per kWh
Best overall
The most complete solution, with a built-in inverter, whole-home backup and 11.5 kW continuous output. Works with any existing solar system. A premium price, but the simplest path to battery storage.
Best value
The lowest cost per kWh in the Australian market. If you are installing solar and battery together and want to keep the cost down, the Sungrow SH and SBR combination starts from around $7,500 installed for 9.6 kWh.
Value runner-up
Very close to Sungrow on price per kWh, with modular 5.2 kWh expansion. A strong option if your installer works with FoxESS or Sungrow stock is limited. Growing fast in the Australian market, with solid specs and 95% round-trip efficiency.
Most flexible
Works with Fronius, GoodWe and other hybrid inverters. The modular design lets you start at 11 kWh and expand to 22 kWh. The best choice if you want inverter flexibility or plan to add capacity later.
Tell us about your solar setup and how you use power. We match you with one Why Solar Approved installer near you for one free written quote on the right battery, with any rebates shown on it, and fifteen minutes with a solar expert before you sign.
