NSW battery rebate: how the Cheaper Home Batteries Program works
How the federal battery rebate works for Byron Bay and NSW homes in 2026: the STC factor table, the capacity taper, who is eligible and how you receive it.
The main battery rebate available to NSW households in 2026 is the federal Cheaper Home Batteries Program, which the Australian Government says takes around 30 percent off the upfront cost of an eligible battery between 5 and 100 kWh. You do not apply for it yourself: the accredited installer or retailer usually takes it off the price or pays it back after installation, through small-scale technology certificates. The size of the discount depends on the battery’s usable capacity and the date it is installed, and it gets smaller every six months until 2030.
What is the Cheaper Home Batteries Program?
It is an expansion of the Small-scale Renewable Energy Scheme, the same certificate scheme that has discounted rooftop solar for years, to cover batteries up to 100 kWh. The Department of Climate Change, Energy, the Environment and Water (DCCEEW) runs the policy, the government funds the discount by purchasing the matching number of battery certificates, and the Clean Energy Regulator (CER) administers it (DCCEEW program page).
The legal rules sit in the federal renewable energy regulations that run the certificate scheme (Federal Register of Legislation). On 13 December 2025 the government announced the program would grow from an original estimate of 2.3 billion to an estimated 7.2 billion over four years. The amending regulations were finalised on 5 February 2026, and two changes took effect on 1 May 2026: the STC factor started stepping down every six months, and the discount began to taper with battery size.
How is the discount worked out?
The discount is the value of the small-scale technology certificates (STCs) the battery is entitled to create. The number of certificates comes from three things:
- the battery’s usable capacity in kWh, not its nominal capacity;
- the STC factor in force on the day it is installed;
- the taper, which reduces the factor for each kWh above 14.
The dollar value then depends on the price the certificates trade at, which is set by the market and by the installer’s offer, so it is not a fixed amount.
The STC factor timetable to 2030
DCCEEW and the CER publish the factor that applies on the installation date:
| Year | Period | STCs per kWh of usable capacity |
|---|---|---|
| 2026 | January to April | 8.4 |
| 2026 | May to December | 6.8 |
| 2027 | January to June | 5.7 |
| 2027 | July to December | 5.2 |
| 2028 | January to June | 4.6 |
| 2028 | July to December | 4.1 |
| 2029 | January to June | 3.6 |
| 2029 | July to December | 3.1 |
| 2030 | January to June | 2.6 |
| 2030 | July to December | 2.1 |
The date that counts is the date the battery is installed, not the date you sign or pay. A battery signed in December but fitted in January 2027 gets the lower factor.
The capacity taper
Since 1 May 2026, the factor is applied in bands (CER battery page):
| Usable capacity band | Share of the STC factor applied |
|---|---|
| 0 to 14 kWh | 100 percent |
| Above 14 up to 28 kWh | 60 percent |
| Above 28 up to 50 kWh | 15 percent |
| Above 50 kWh | No certificates |
Only the first 50 kWh of usable capacity earns certificates, even though batteries up to 100 kWh nominal are eligible.
A worked example with the current factor
These sums use the published rules and the May to December 2026 factor of 6.8. They show certificate numbers only; the CER’s REC Registry calculator gives the official count for a specific model.
- 10 kWh usable: 10 × 6.8 = 68 certificates, all in the first band.
- 20 kWh usable: the first 14 kWh earn 14 × 6.8 = 95.2, and the next 6 kWh earn 6 × 6.8 × 0.6 = 24.48, so about 119 certificates in total. Doubling the battery adds well under double the discount.
This is why the published installed cost per kWh tends to stay fairly flat as batteries get bigger, which the solar and battery cost guide shows in its price bands.
Who is eligible?
The CER lists the requirements a battery system must meet to create certificates:
- installed by a Solar Accreditation Australia accredited installer with a battery endorsement;
- included on the Clean Energy Council approved battery list;
- new, made within 12 months of the installation date, and not previously installed or claimed;
- installed with a new or existing solar PV system of no more than 1 MW;
- nominal capacity between 5 and 100 kWh, with each battery in a group meeting the 5 kWh minimum;
- compliant with AS/NZS 5139 and state electrical safety laws;
- technically capable of joining a virtual power plant if it is grid connected (off-grid systems must be within 1 km of the grid for this to apply);
- installed in a single job;
- one eligible battery system per premises, and for grid-connected systems one per National Metering Identifier.
Expanding an existing battery can qualify if the added nominal capacity is at least 5 kWh and the total stays at or below 100 kWh. Only the newly added modules earn certificates.
In NSW, the battery must also be wired in by a licensed electrician, who lodges a compliance certificate once the work is tested.
How do you receive the discount?
DCCEEW says consumers do not need to apply to the department or to the CER. There are two routes:
- Through the installer or retailer. You assign your right to create the certificates to them, and they either reduce the price upfront or pay a rebate after installation. This is how most people receive it.
- Directly through the REC Registry. You keep the right to create the certificates and trade them yourself through the Clearing House or the open market. If you choose this, make sure the contract does not assign that right to the installer.
Whichever route you take, DCCEEW suggests getting the value of the discount and the timing of when you receive it in writing, along with the system warranty and the anticipated payback period. If you have concerns about receiving your discount, DCCEEW points you to the Clean Energy Regulator.
Can you combine it with a NSW incentive?
DCCEEW describes the program as a national scheme designed to complement state incentives, and says support under local programs depends on the requirements each state sets. It advises checking with the state government to confirm eligibility and whether a state offer can be combined with the federal discount. NSW programs change, so ask the installer which, if any, apply to your job on the day you sign, and check the answer on the NSW Government’s energy site rather than relying on an advertisement.
What does this mean for a Byron Bay household?
A few practical points follow from the rules.
- Install date matters more than sign date. If you are close to 1 January 2027, ask the installer when they can actually fit the battery. In the Byron Shire wet season, roof and wall work can slip, and a delay past the date can cost you the higher factor.
- Size to your evening use, not to the discount. Because of the taper, a battery beyond 14 kWh usable earns a smaller discount per kWh. That is fine if the household needs the storage, but it is not a reason on its own to buy a bigger unit.
- Adding to existing panels counts. Many Byron Shire roofs already have solar. The discount applies to batteries joined to existing systems, and the battery retrofit guide covers whether an older inverter can work with one.
- Check the model before you commit. The Clean Energy Council suspended several battery models from its approved list on 15 September 2026, and they are no longer eligible for certificates (CEC approved batteries). A model on a quote should be checked against the list on the day.
This website does not claim certificates or sell batteries. It passes your enquiry to an independent installer who works out the discount, prepares the quote and does the installation, as the about page describes. For how a battery gets chosen and placed on the wall, see the home battery installation guide, and use the quote checklist to make sure the discount is written into the contract. If you are ready to see what your battery would attract, you can ask for a battery quote with the discount shown.
Next step: ask for a battery quote that shows the certificates
When you send a battery rebate enquiry, give your suburb, whether you already have solar (with the inverter make, model and age), your usual evening and overnight usage from a recent bill or app, the battery size you have in mind, and when you would like it installed. Ask for the quote to show the usable capacity, the number of certificates, their value and whether the discount comes off upfront or as a rebate.
Frequently asked questions
- Do I have to fill in a form to get the federal battery rebate?
No. There is no application to the government. When you assign your certificate rights to an accredited installer, the installer handles the paperwork and passes on the value. You only deal with the REC Registry yourself if you choose to create and trade the certificates on your own.
- Can I get the battery discount if I do not have solar panels?
The discount is for batteries installed with a new or existing solar system. If you have no panels, the battery would need to be installed alongside a new solar system to qualify. Ask the installer to quote the panels and battery together so both discounts show.
- Does the discount apply to a second-hand or older battery?
No. The battery must be new, manufactured within 12 months of the installation date, and not installed or claimed before. A battery that has been moved from another house, or bought as old stock, will not create certificates.
- Why is the discount worth less for a large battery?
Since May 2026 the certificate rate tapers by capacity. The first 14 kWh of usable capacity earns the full rate, the next band earns 60 percent and the band up to 50 kWh earns 15 percent. Beyond 50 kWh usable there is no further discount.
- Will the rebate still exist in 2027 and beyond?
The published schedule runs to the end of 2030, with the certificate rate stepping down every six months. The program is reviewed at least once a year, so the rates could be changed again. Check the current figures on the DCCEEW or Clean Energy Regulator sites before signing.