Solar Battery Rebates in Victoria (2026): What the Cheaper Home Batteries Program Actually Takes Off

Most battery enquiries we get this year start with a number someone saw in an ad. "Half-price batteries." "Save up to $10,000." One flyer I saw promised a free battery, which would be a remarkable business model if it were true.

So here's how the battery discount really works in Victoria right now, what it's worth on a normal-sized home battery, and what changed in May that made half the ads out of date.

It's a certificate, not a cheque

The federal Cheaper Home Batteries Program has been running since 1 July 2025. You don't apply for it and nobody posts you money. It runs through the same Small-scale Technology Certificate (STC) system that has discounted rooftop solar for years.

When an eligible battery is installed, it earns a number of STCs based on its usable capacity. You sign those certificates over to your installer, and the installer takes their value off your price. Government then buys the certificates back, so the discount isn't loaded onto everyone else's power bill.

Two things follow from that. The discount depends on usable capacity, which is usually a little under the number printed on the box. And it's already inside any honest quote. If a quote shows a big "rebate" line under a price that looks suspiciously high, ask what the price was before the rebate. Sometimes the answer is interesting.

What changed on 1 May 2026

Two things changed, and both are on the Department's program page.

First, the multiplier (the "STC factor") now drops every six months instead of once a year. It's 6.8 STCs per usable kWh for installs from May to December 2026, then 5.7 from January 2027, and it keeps stepping down twice a year until it reaches 2.1 in the second half of 2030.

Second, big batteries now get less per kWh:

• The first 14 kWh gets the full factor.
• Every kWh from 14 to 28 gets 60% of it.
• From 28 to 50 kWh, it's 15%.
• Past 50 kWh of usable capacity, nothing.

The program still covers batteries from 5 to 100 kWh nominal. It just stops paying for the capacity above 50.

This is the part the "save up to $10,000" ads skip over.

What that's worth on a 20 kWh battery

Here's the maths for a battery with 20 kWh of usable capacity installed before the end of this year. 14 kWh at 6.8 is about 95 STCs. The next 6 kWh at 60% of 6.8 adds about 24. Call it 119 certificates.

Each STC sells for up to $40 through the government clearing house. On the open market they usually trade a bit below that, and installers keep some for the paperwork. So on a 20 kWh battery you're looking at a discount somewhere in the low-to-mid four thousands. The REC Registry calculator gives the exact count. I'm doing this in my head; the registry isn't.

Now try 30 kWh. The extra 10 kWh earns roughly 35 more STCs, a bit over a third of what the first 10 kWh earned. Add the fact that most Melbourne homes don't use 30 kWh overnight and that's why I push back when people ask for the biggest battery the rebate covers. The rebate stopped rewarding "biggest" in May.

January is the next cliff

The Clean Energy Regulator is blunt about this: the discount is set by the date the battery is installed, not the date you sign. Installed means the day the electrical compliance certificate is issued.

On a 20 kWh battery, the drop from 6.8 to 5.7 on 1 January 2027 costs roughly 19 certificates. At current prices that's around seven hundred dollars.

So if you were going to get a battery anyway, getting it installed before Christmas is worth real money. If you weren't, seven hundred dollars isn't a reason to buy a $4,000 thing. Anyone who tells you it is has a sales target.

Is there still a Victorian battery rebate?

No. Solar Victoria used to offer battery rebates and later interest-free battery loans, but it is no longer taking applications for battery loans. For new installs, the federal program is the only battery discount I'm aware of for Victorian homes right now.

The Victorian solar panel rebate is still running, with income and property limits. I went through it in what solar costs in Melbourne. If you're getting panels and a battery together, that one can stack with the federal battery discount, provided you qualify.

What makes a battery eligible

This is shorter than people expect:

• The battery and inverter have to be on the Clean Energy Council's approved product list on the day of install.
• The installer has to be accredited with Solar Accreditation Australia, and has to actually be on site.
• On-grid systems have to be capable of joining a virtual power plant. You don't have to join one.
• One discounted battery per property, the first time a battery is installed or added.
• It works with new solar or solar you already have.

That VPP point confuses people. It's about the hardware being able to take remote signals, not about signing up with anyone. You can decide about that later.

"Best battery deal" is the wrong question

I get asked about brands a lot. Sigenergy, Tesla, whatever was in the last ad. We install Sofar, Fox ESS and GoodWe, and you can see the actual models on our batteries page. I'm not going to trash brands we don't install. Plenty of them are fine.

My opinion, for what it's worth: brand is the third question. The first is size, because an oversized battery is money sitting in your garage. The second is who installs it and whether they'll answer the phone in year six. After that, pick a brand with an Australian warranty and local support, and one that suits your inverter setup.

The cheapest quote in your inbox is often cheap because it skipped one of those two.

What we charge

On our upfront plan, the add-a-battery upgrade (a 20 kWh battery plus a 5 kW inverter) starts at $3,999 ex GST, which is $4,398.90 including GST. A new 6.6 kW solar system with a 20 kWh battery starts at $8,853.90 including GST. Solar on its own starts at $4,455 including GST.

All three have the STC discount already taken off. Two-storey homes, three-phase power, switchboard upgrades and bigger batteries are quoted after we've seen the house. How we size and fit a battery, and what happens on install day, is on our battery installation page.

So, should you?

If your house is empty during the day and busy from 5pm, a battery sized to your evening use makes sense, and the discount makes it a lot easier to justify than it was two years ago. If you're home all day soaking up your own solar, the case is thinner.

Send us a year of bills. We'll tell you what size makes sense, what the discount is on the day we'd install it, and whether you should bother at all.

Sometimes the honest answer is "not yet". That one's free.