Best Solar Batteries in Australia: 2026 Comparison Guide

Why Add a Battery?

Solar panels generate power during the day, but most households use the bulk of their electricity in the evening. A battery stores your excess solar energy so you can use it after sunset instead of buying from the grid.

Top Batteries Compared

Tesla Powerwall 3

• Capacity: 13.5kWh
• Price: $12,000 - $15,000 installed
• Warranty: 10 years
• Best for: Whole-home backup, seamless app integration
• Tesla's latest model includes an integrated inverter and offers storm watch features

BYD HVS/HVM

• Capacity: 5.1 - 22.1kWh (modular)
• Price: $8,000 - $18,000 installed
• Warranty: 10 years
• Best for: Flexible sizing, budget-conscious buyers
• Modular design lets you start small and add capacity later

Sungrow SBR

• Capacity: 9.6 - 25.6kWh (modular)
• Price: $7,500 - $16,000 installed
• Warranty: 10 years
• Best for: Value for money, large systems
• Popular with installers for reliability and competitive pricing

Enphase IQ Battery

• Capacity: 5kWh per unit (stackable)
• Price: $8,000 - $12,000 installed
• Warranty: 15 years
• Best for: Microinverter systems, incremental expansion
• Pairs perfectly with Enphase microinverters

Do You Need a Battery?

Batteries make financial sense if:

• Your feed-in tariff is low (under 8c/kWh)
• You use most electricity in the evening
• You want blackout protection
• Your electricity rate is above 35c/kWh
• You have time-of-use tariffs with expensive peak rates

Battery Rebates

Several states offer battery subsidies:

• South Australia — Up to $4,000 subsidy through the Home Battery Scheme
• Victoria — Solar battery rebate available
• ACT — Interest-free battery loans
• Queensland — Battery booster program

Tips for Choosing

• Match battery size to your evening usage (check your bills)
• Ensure your installer is CEC-accredited for battery installation
• Check the warranty covers both years AND cycles
• Consider modular systems if you want to expand later
• Ask about virtual power plant (VPP) programs for extra savings