Typical home battery sizes in Australia

Australian homes most often install battery systems between about 5 kWh and 15 kWh usable capacity, though commercial offerings range wider. Nameplate size is not the same as usable energy — reserve, inverter limits, and depth of discharge all matter on site.

Common capacity bands

• 5–7 kWh — modest evening cover for efficient homes with moderate solar; often entry-level retrofit.
• 10–13 kWh — frequent choice for families with 6.6 kW solar and typical evening loads; aligns with many “whole evening” marketing claims (check your own kWh).
• 15 kWh+ — larger footprints, heavy air-conditioning, or homes targeting longer backup hours; verify switchboard and export limits with an installer.

CEC-approved brands (examples)

Federal rebates, many state programs, and some network connection rules require a battery model on the Clean Energy Council approved batteries list. Approval is per model and capacity — a brand name alone is not enough. Your installer should quote a specific listed SKU; you can cross-check on the CEC search or the Clean Energy Regulator download.

The brands below are commonly seen on Australian home installs. This is not a complete list, endorsement, or guarantee that every product they sell is currently CEC-approved.

Match storage to your numbers, not a brochure

A 10 kWh sticker does not automatically fit a home using 28 kWh/day if you only want four hours of cover. Work from your bill daily averages and solar window first — that is what our calculator is for.

Pair with reading your bill and solar generation & export so inputs reflect your home rather than a national average.

Power (kW) vs energy (kWh)

Batteries also have a maximum discharge rate in kilowatts. A small battery may not run oven + aircon simultaneously even if total kWh over the evening is enough. This tool estimates energy capacity only — ask your installer about power limits and backup circuits.