Where a battery stops being an appliance and starts being part of the building.

What this size does to the house

Mass, clearances and the cupboard it will not fit in.

Somewhere in this range a battery stops being an appliance and starts being part of the building. Almost everything here is modular — you are stacking cabinets or modules rather than hanging one box on a wall — and that changes the job in ways a spec sheet does not show. The stack has real mass and needs a floor or a footing that suits it, not a plasterboard wall. It needs clearances and a location that satisfies the installation standard for battery systems, AS/NZS 5139, which is stricter about habitable rooms and escape paths than most people expect and is the reason so many of these end up in a garage or on an external wall rather than in the hallway cupboard the owner had in mind. Electrically, this is the band where the switchboard usually does need attention: more isolation, often a dedicated sub-board, and a supply that has to be checked rather than assumed.

Who it suits

And who it doesn't.

It suits a household that has already electrified — heat pump hot water, induction, one or two cars charging at home — and whose evening load is genuinely large enough to empty a smaller battery before morning. It suits a home with the space and the siting to do it properly. It does not suit a house being fitted out speculatively "for the future": paying to store energy you do not yet use is the most common way to make the numbers stop working, and a system sized against last winter's bills beats one sized against an ambition.

Approved ranges in this band

Ranges that reach into this band.

Most lines here arrive by stacking rather than by being built for the size, so the number of registered sizes per line is high and the capacity span is wide. Capped at 2 lines per brand so one modular range cannot fill the table — 111 lines shown, 40 more in the register. 40 of the 1039 registered sizes in this band have already lapsed and 22 lapse within six months, which is why the expiry column is there.

A product line is one family, andsizes is how many separate configurations of it are registered — modular systems are registered once per stack size, which is why some lines show dozens. Usable capacity is the figure the certificate tiers are calculated on, and it is always lower than the nominal capacity printed on the box.Listing expires is the date the Clean Energy Council approval lapses; after it, that configuration can no longer earn certificates. All of it is as published in the Clean Energy Council approved battery list, so you can look up any line yourself.

Wrong size?

Look either side.

Capacities and expiry dates from the Clean Energy Council approved battery list, published by the Clean Energy Regulator, as published on 2026-08-20. Look any line up yourself atthe register.