The Cheaper Home Batteries Rebate Just Shrank Again: What It Means If You're Still Deciding

If you've been putting off a decision on a home battery because "the rebate will still be there next year," it's worth knowing that the rebate itself is shrinking on a schedule now, and it's already happened once in 2026. The Cheaper Home Batteries Program changed on 1 May 2026, and the changes are worth understanding properly before you get a quote.

What changed on 1 May 2026

Two things shifted. First, the rebate's underlying value (its Small-scale Technology Certificate, or STC, factor) now steps down every six months instead of once a year, and at a steeper rate than before. It dropped from 8.4 across January to April 2026, down to 6.8 from May onward. Second, the rebate is now tapered by battery size rather than applying flatly across the board: batteries up to 14 kWh still get the full STC factor, batteries from 14 to 28 kWh only get 60% of it, and anything from 28 to 50 kWh gets just 15%.

What that actually looks like in dollars

Using the current 6.8 factor, a typical 10 kWh battery's rebate has gone from around $3,192 down to roughly $2,584. A larger 25 kWh system has dropped from about $7,980 to around $5,323. At the top end, a 50 kWh system has fallen from roughly $15,960 to about $6,641, a much steeper cut, because of the size-based tapering hitting larger systems hardest.

Nothing else about eligibility changed. The program still covers batteries up to 100 kWh, still works whether you're adding a battery to an existing solar system or installing both together, and is still delivered as an upfront discount through the STC scheme rather than something you claim back later.

Why the government is winding it back

This isn't a sign the scheme is in trouble, it's the opposite. Since the program launched in July 2025, daily battery installations jumped from around 200 a day to over 1,500 a day nationally, and the average battery size being installed roughly doubled. The government is tapering the rebate as battery costs themselves keep falling, aiming to hold the effective discount at around 30% while the scheme works toward its target of 2 million battery installations by 2030. In other words, it's being managed down deliberately, on a schedule, not pulled suddenly.

What this means if you're still deciding

The practical takeaway is that every six months from here, the STC factor is expected to step down again, meaning the rebate on the exact same battery gets smaller the longer you wait. If you've been comparing quotes for a few months without pulling the trigger, it's worth getting a current quote rather than working off numbers from earlier in the year, since both the factor and the size-based tapering will have moved.

We'll always quote you against the current rebate settings, not last year's numbers, and help you weigh up battery size against where the tapering kicks in, since a slightly smaller system can sometimes come out ahead once the rebate tiers are factored in.

Want a current, accurate quote before the next step-down? Get in touch with Power & Solar Group and we'll run the numbers for your home.