Before you sign anything
Seven conditions decide whether a battery earns the discount.Most quotes mention two.
The federal Cheaper Home Batteries discount reaches you as small-scale technology certificates, assigned to your installer and taken off the price up front. Whether they can be created at all comes down to a short list of conditions — every one of which is checkable before you commit.
Quick answer
A home battery earns federal small-scale technology certificates only if all of the following hold: the exact model is on the Clean Energy Council approved battery list; its nominal capacity is between 5 and 100 kWh; it is installed with a new or existing solar PV system of no more than 100 kW; it is technically capable of being coordinated in a virtual power plant, though joining one is optional; and it is installed by a Solar Accreditation Australia accredited installer holding the battery endorsement. Certificates can be claimed on the first 50 kWh of usable capacity only, and since 1 May 2026 the factor steps down by capacity band. Eligibility is determined by the installation date, not the contract date. Victoria no longer runs its own battery rebate or loan — the federal program is the only battery incentive currently open to Victorian households. Thunderman Electrical and Air Conditioning Services handles the licensed electrical side of battery installation across Greater Melbourne under REC 28523; its Solar Accreditation Australia accreditation is the solar PV class, not the battery endorsement, so battery certificates are not claimed on Thunderman installations. Free quote, call 0434 254 474.
The conditions
All of them, in the order they trip people up.
01
It has to be on the approved list
Not "a good brand" and not "certified" — on the Clean Energy Council approved battery list, by model number. The register currently carries 3526 configurations across 308 product lines. If the model on your quote is not on it, no certificates can be created for that installation, and any discount quoted on the assumption that they could will not survive the paperwork.
02
Nominal capacity between 5 and 100 kWh
Below the floor there is nothing to claim, and 43 listed configurations sit under it — they are perfectly legitimate products, they are simply outside the program. Note this test uses nominal capacity, while the tiers below use usable capacity. Quotes mix the two up constantly, and they are never the same number.
03
Only the first 50 kWh of usable capacity counts
A larger battery is allowed and can be a sensible choice, but nothing above that ceiling contributes to the certificates. If someone is proposing a system past it, the extra capacity needs to justify itself on load or resilience grounds rather than on the discount.
04
It has to be able to join a virtual power plant
The requirement is capability, not participation — the system must be technically capable of being coordinated as part of a virtual power plant, and you are not obliged to sign up to one. This trips people up because it sounds like a commitment to let someone else use your battery. It is not; it is a condition on the equipment.
05
It has to be installed with solar
New or existing, but there has to be a solar PV system of no more than 100 kW. A battery on its own, with no array, is outside the program. Existing solar counts, which is the common case in Melbourne — a battery added to an array installed years ago is eligible on this test.
06
The installer needs the right accreditation
Battery work under this program requires a Solar Accreditation Australia accredited installer holding the battery endorsement, working to that scheme's technical requirements. This is a different question from whether someone is a licensed electrician, and both matter: the accreditation governs eligibility for the certificates, the electrical licence governs the switchboard, the isolation and the grid connection. Ask which of the two anyone quoting you actually holds.
07
The install date decides it, not the contract date
Certificates are determined by when the system is installed, not when you signed. That is what makes lead times a real risk: a listing that lapses or a rule that changes between order and installation takes the eligibility with it, and unless the contract says otherwise the buyer wears it.
The Victorian part everyone gets wrong
There is no state battery rebate to stack on top.
Victoria ran an interest-free battery loan through the Solar Homes program, and it closed to new applications. The state's own solar battery buyers' guide says plainly that the loan is no longer available, and points households at the federal program instead. A good deal of Victorian solar marketing has not caught up, and a quote that implies a state battery incentive on top of the federal certificates is quoting something that is not there. The solar PV rebate is a separate program that does still exist, with its own eligibility rules — including a household income test that changed on 1 July 2026.
This matters beyond the arithmetic. If a quote is wrong about which programs apply, that is a reasonable prompt to check what else in it has been assumed rather than looked up.
The bit that is our job
Eligibility is one question. The switchboard is another.
Everything above governs whether certificates can be created. None of it says anything about whether your installation can take the battery — and that is where quotes tend to go quiet. A battery needs isolation and protection at the board, a decision about which circuits stay alive in an outage and how they are separated, a connection the distributor will approve at your address, and a location that satisfies the installation standard for battery systems, AS/NZS 5139. On an older Melbourne switchboard, at least one of those usually needs work.
Thunderman does that side of it: the board, the isolation, the essential-loads arrangement, the grid connection. Yiannis is a Registered Electrical Contractor (REC 28523) and holds Solar Accreditation Australia accreditation (S6375256). Since this page tells you to ask which accreditation anyone quoting you holds, here is the straight answer for us: that number is the grid-connected solar PV class, not the battery endorsement. So the certificates on a battery are not ours to claim — that part belongs to a battery-endorsed installer, and we will say so rather than let it sit in a quote unmentioned. If you have a battery quote from someone else and want the electrical scope in it read properly before you sign, that is a sensible thing to ask for.
Conditions on this page are as published by the Clean Energy Regulator and the Clean Energy Council; register figures are from the Clean Energy Council approved battery list, published by the Clean Energy Regulator as published on 2026-08-20. Check the list yourself atthe register. Rules change — this page reflects the position as at 2026-08-20, and the install date is what your own eligibility will be judged on.
Battery eligibility — common questions
Is there still a Victorian battery rebate on top of the federal one?
No. The Victorian Government's Solar Homes battery loan is no longer open to new applications, and Victoria does not currently run its own battery rebate — the state's own buyers' guide says so. Victorian households access battery support through the federal program only. This is worth knowing because a lot of Victorian solar marketing still refers to a state battery incentive, and a quote built on stacking two of them is building on one that is not there. Solar panels are a separate matter: the Solar Homes rebate for solar PV does still exist, with its own eligibility rules that changed on 1 July 2026.
Do I have to join a virtual power plant to get the discount?
No. The condition is that the system is technically capable of being coordinated through a virtual power plant if it is grid connected. Whether you ever join one is your decision, and it does not affect eligibility. It is worth understanding the difference before signing anything that bundles a VPP agreement with the installation, because those are commercial arrangements with their own terms — and the certificates do not depend on them.
Can I add a battery to solar panels I already have?
Yes, and that is the most common case. The program requires the battery to be installed with a solar PV system of no more than 100 kW, new or existing. What the age of your array actually affects is the practical side: whether your existing inverter can work with the battery you want or has to be replaced, whether the switchboard has room for the extra isolation, and what the distributor will approve at your address. Those are the questions that decide the quote, not the eligibility.
Why does a bigger battery not mean a proportionally bigger discount?
Because since 1 May 2026 the certificate factor steps down as usable capacity rises — full weighting for the smallest band, 60% for the middle band and 15% above that, with nothing claimable past the first 50 kWh of usable capacity. The regulator's stated intention was to keep the level of support proportionate across small, medium and large systems rather than to reward size. The practical effect is that the question worth asking is not how big a battery you can get supported, but how big a battery your household actually empties overnight.
How do I check a quote myself?
Take the model number off the quote — the model number, not the series name or the brand — and look it up in the approved battery list published by the Clean Energy Regulator. It is a free download. Check three things: that the model is there, that the expiry date has not passed and will not pass before your installation, and that the usable capacity on the quote matches the register. Then ask the installer, in writing, which accreditation they hold for the battery work. That is about ten minutes of work and it is the difference between a discount you were promised and one you actually receive.
Get the electrical scope checked before the deposit, not after.
Yiannis will look at the board, the circuits worth backing up and what the distributor will approve at your address — on your system or on someone else's quote. Free quote, REC 28523.