Thinking about installing solar panels or a home battery in Australia in 2026?
Government incentives can reduce the upfront cost of eligible solar and battery systems, but the amount you receive depends on the type of system, installation date, location, eligible capacity and program requirements.
For homeowners, the important question is not simply:
“How much is the solar rebate?”
The better question is:
“What incentives am I eligible for, how much will they reduce my upfront cost, and is this the right time to install?”
In 2026, this is particularly important for battery buyers because the Cheaper Home Batteries Program changed from 1 May 2026, with battery STCs now calculated using capacity-based tiers.
This guide explains how Australia’s solar and battery incentives work, what changed in 2026 and what you should check before signing a quote.
Want to Know How Much You Could Save?
The easiest way to understand your potential savings is to compare:
System Price → Applicable STCs/Incentive → Installation → Final Out-of-Pocket Price
Get a personalised assessment based on your home, electricity usage and preferred system size.
Get a Free Solar & Battery Quote
What Is the Solar Rebate in Australia?
Australia does not have one single flat “solar rebate”.
The main federal incentive for eligible small-scale rooftop solar is provided through the Small-scale Renewable Energy Scheme (SRES) and Small-scale Technology Certificates (STCs).
STCs can reduce the upfront cost of an eligible solar installation. The number of certificates depends on factors such as installation date, location and system characteristics.
Usually, homeowners assign their right to create STCs to an eligible agent or installer in exchange for an upfront discount.
This means the incentive is commonly reflected directly in your solar quotation rather than requiring you to receive a separate government payment.
Ask your installer:
“How many STCs are included in my quote, and what is the final price after the STC discount?”
How Do Solar STCs Work in 2026?
STCs are certificates created under the federal SRES.
For eligible solar PV systems, the number of STCs is influenced by:
- System size
- Installation location
- Installation date
- Expected renewable electricity generation
- The applicable deeming period
- Current SRES rules
The solar PV deeming period continues to decline as the SRES approaches its scheduled end in 2030.
This means the value of the upfront solar incentive can change depending on when your system is installed.
What does this mean for homeowners?
Don’t compare solar quotes using only the advertised system price.
Compare:
Gross System Price
minus
STC Incentive
plus/minus
Installation and Additional Costs
equals
Final Installed Price
What Is the Cheaper Home Batteries Program?
The Cheaper Home Batteries Program was introduced on 1 July 2025 to help households and small businesses reduce the upfront cost of eligible battery systems.
The program is delivered through the SRES and provides around a 30% discount on eligible small-scale battery systems, subject to the program’s rules.
Eligible batteries can be connected to either:
- A new rooftop solar system
- An existing rooftop solar system
The discount is generally provided through the retailer or installer rather than paid separately to the homeowner.
What Changed to the Battery Rebate From 1 May 2026?
This is one of the most important changes for Australian battery buyers.
From 1 May 2026, the battery STC calculation became more complex because the STC factor now:
- Changes every six months
- Reduces over time
- Tapers according to battery capacity
The current capacity structure is:
| Usable battery capacity | STC factor applied |
|---|---|
| 0–14 kWh | 100% |
| Above 14–28 kWh | 60% |
| Above 28–50 kWh | 15% |
The program can recognise eligible battery systems with up to 100 kWh nominal capacity, but STCs are calculated only on the applicable eligible capacity under the current rules.
Why does this matter?
A homeowner considering a 28 kWh or 40 kWh battery should not assume that every kWh receives the same incentive.
This is why the battery size, usable capacity and installation date should be clearly shown on your quotation.
Does the Battery Rebate Still Provide Around 30% Support?
The government designed the battery STC changes so the discount remains around 30% across different battery sizes as battery costs decline.
However, the actual dollar value of the incentive for your installation depends on the applicable STC factor, usable capacity and certificate value.
So avoid relying on generic claims such as:
“Every battery gets a 30% rebate.”
Instead ask:
“Exactly how much battery incentive is included in my quote?”
How Much Is the Solar Battery Rebate in 2026?
There is no single rebate amount that applies to every battery.
Your potential incentive depends on factors including:
- Usable battery capacity
- Installation date
- Applicable STC factor
- Battery eligibility
- System configuration
- Product approval
- Installer accreditation
- Current program requirements
For example, the current STC factors for batteries are:
| Period | STC factor |
| 2026 Jan–Apr | 8.4 |
| 2026 May–Dec | 6.8 |
| 2027 Jan–Jun | 5.7 |
| 2027 Jul–Dec | 5.2 |
| 2028 Jan–Jun | 4.6 |
| 2028 Jul–Dec | 4.1 |
| 2029 Jan–Jun | 3.6 |
| 2029 Jul–Dec | 3.1 |
| 2030 Jan–Jun | 2.6 |
| 2030 Jul–Dec | 2.1 |
These factors are then subject to the capacity tapering rules.
Does the Battery Rebate Apply to Existing Solar?
Yes, eligible battery systems can be connected to existing rooftop solar.
The federal program supports eligible batteries connected to new or existing rooftop solar systems.
This can be particularly valuable for homeowners who already have solar but still:
- Export large amounts of electricity during the day
- Purchase electricity from the grid at night
- Have high evening consumption
- Own an EV
- Run air conditioning after sunset
- Operate a pool
- Want greater energy independence
Instead of:
Solar → Home → Excess → Grid
your energy flow can become:
Solar → Home → Battery → Evening Consumption
The financial benefit depends on your actual energy usage, solar generation, electricity tariff and battery performance.
Who Is Eligible for the Battery Rebate?
Battery eligibility depends on the current program requirements.
Under the current federal rules, an eligible solar battery system generally needs to meet requirements including:
- New battery system
- 5–100 kWh nominal capacity
- Installed with new or existing solar PV of no more than 100 kW
- Battery listed on the approved product list
- Compliance with relevant Australian and New Zealand standards
- Required VPP capability
- Installation by an appropriately accredited SAA installer with battery endorsement
- Compliance with applicable state and territory requirements
Ask your installer:
“Is this exact battery model and configuration eligible for the current federal battery incentive?”
Why SAA Accreditation Matters
For an STC-eligible solar or battery installation, the installer must meet the applicable accreditation and licensing requirements.
The Clean Energy Regulator states that battery systems eligible for STCs must be installed by a Solar Accreditation Australia (SAA) accredited installer with battery endorsement and comply with the relevant technical requirements.
This is more than a marketing badge.
It is part of the compliance framework supporting STC eligibility.
Before installation, ask to verify:
Installer Accreditation
Electrical Licence
Battery Endorsement
Product Approval
System Compliance
Are All Solar Panels and Batteries Eligible for the Rebate?
No.
Eligibility is not determined simply because a product is available for sale in Australia.
For eligible STC claims, the relevant products must meet the applicable approved-product requirements.
For battery installations, the CER states that the battery must be included on the Clean Energy Council approved battery list and meet the applicable requirements.
Before signing, ask:
“Is this exact battery model and configuration currently approved for the program?”
What Battery Size Should You Buy?
The biggest battery is not automatically the best battery.
Your battery size should be based on your actual electricity consumption and solar generation.
Consider:
- Daily electricity consumption
- Existing solar system size
- Daytime electricity usage
- Evening consumption
- Overnight loads
- Air conditioning
- Pool pumps
- Hot water
- EV charging
- Electricity tariffs
- Backup requirements
- Future electricity consumption
- Available installation space
Example
A household using relatively little electricity may not benefit financially from a very large battery.
A household with high evening consumption, an EV and a pool may have a stronger case for additional storage.
The right question is:
“What battery size gives me the best balance between upfront cost, incentive, usable capacity and expected savings?”
Should You Buy a 14 kWh, 28 kWh or Larger Battery?
The 2026 battery incentive structure makes this question particularly important.
Under the current capacity taper:
First 14 kWh → 100% STC factor
14–28 kWh → 60% STC factor
28–50 kWh → 15% STC factor
Therefore, don’t choose a battery size purely because it appears to maximise the rebate.
Instead compare:
Battery Cost
Usable Capacity
Applicable Incentive
Expected Annual Savings
Payback
Future Energy Requirements
How Do You Calculate Your Solar & Battery Savings?
A simple battery payback calculation is:
Net Battery Cost ÷ Estimated Annual Battery Savings = Approximate Simple Payback
But this is only a starting point.
Actual savings can depend on:
- Electricity prices
- Feed-in tariff
- Solar generation
- Household consumption
- Battery efficiency
- Battery degradation
- Battery cycling
- Time-of-use tariffs
- EV charging
- VPP participation
- Future electricity prices
A professional quote should explain the assumptions behind its savings estimate.
Avoid choosing a system simply because someone promises:
“Your battery will pay for itself in exactly X years.”
How to Compare Solar Quotes After the Rebate
Don’t compare quotes based on the headline discount.
Compare the complete installed price.
| Cost Item | Installer A | Installer B |
| Solar panels | $X | $X |
| Inverter | $X | $X |
| Battery | $X | $X |
| Installation | $X | $X |
| Electrical work | $X | $X |
| Government incentive/STCs | -$X | -$X |
| Monitoring | $X | $X |
| Backup equipment | $X | $X |
| Final installed price | $X | $X |
The cheapest advertised system is not necessarily the cheapest complete system.
What Should Your Solar & Battery Quote Include?
Before signing, check whether your quotation clearly identifies:
- Solar panels
- Battery
- Inverter
- Usable battery capacity
- Installation
- Switchboard work
- Protection equipment
- Backup equipment
- Monitoring
- Commissioning
- Certification
- Applicable STC incentive
- Final price
- Warranty
- After-sales support
- Installer accreditation
A transparent quote makes it easier to compare different retailers.
When Does the Solar Rebate End?
The SRES is scheduled to continue through to 2030, with the solar PV deeming period reducing over time.
Battery STC factors are also scheduled to decline through 2030. The current published battery factors reduce progressively from 2026 through 2030.
However, this does not mean you should automatically buy a system today.
The right decision depends on whether the system makes financial sense for your household.
The better approach is:
Energy Need → System Size → Eligible Products → Incentive → Final Price → Expected Savings → Payback
Why the Installation Date Matters in 2026
One of the most important points for battery buyers is that the applicable battery rebate is determined by the installation date.
The Clean Energy Regulator specifically confirmed that the 1 May 2026 changes apply according to when the battery is installed, rather than simply when the contract is signed.
This means homeowners should not rely on an old quotation showing a previous incentive.
Before signing, ask:
“Which STC factor has been used in my quote, and is it based on my expected installation date?”
Can You Combine Federal and State Solar Rebates?
Potentially.
Australia has federal incentives as well as various state, territory and local programs.
However, state incentives change frequently and can have their own:
- Eligibility requirements
- Income requirements
- Property requirements
- Product requirements
- Application deadlines
- Loan conditions
- Installation requirements
Therefore, don’t assume that a state incentive automatically stacks with the federal program.
Check the current rules for your state before making a purchase decision.
Solar Rebate by State
Queensland
Queensland homeowners may be eligible for federal solar and battery incentives, subject to the applicable SRES requirements.
New South Wales
NSW homeowners may have access to federal incentives plus applicable state programs depending on the household and system.
Victoria
Victoria has state-based energy programs in addition to federal incentives, with eligibility changing over time.
South Australia
SA homeowners can potentially combine federal support with applicable state or energy programs where eligibility requirements are met.
Western Australia
WA has also introduced state battery support programs, subject to program eligibility and availability.
ACT and Tasmania
Additional government energy programs may be available depending on location and household circumstances.
Always verify the current state program before including it in your financial calculation.
10 Questions to Ask Before Buying Solar or a Battery
Before signing your contract, ask:
- What federal incentive is included in my quote?
- How many STCs have been included?
- What installation date was used for the calculation?
- Is my battery eligible under the current Cheaper Home Batteries Program?
- How much of my battery capacity receives the applicable STC factor?
- Is the battery on the approved product list?
- Is the installer SAA accredited for battery installations?
- What is the final installed price after incentives?
- What assumptions were used to calculate my expected savings?
- What happens if my installation date changes?
Is the Solar Rebate Worth It in 2026?
For homeowners who already have a genuine need for solar or battery storage, government incentives can improve the economics of installation.
But the rebate should not be the only reason you buy a system.
The strongest decision usually comes from combining:
Right System Size
Eligible Equipment
Quality Installation
Applicable Incentive
High Solar Self-Consumption
Reduced Grid Purchases
Long-Term Energy Needs
The goal is not simply to get the biggest rebate.
The goal is to get the right energy system at the right installed price.
Who Should Consider Solar + Battery?
A solar and battery system may be particularly worth considering if you:
- Have high electricity bills
- Already have solar
- Export substantial solar energy during the day
- Use significant electricity in the evening
- Have air conditioning
- Own a pool
- Plan to purchase an EV
- Want greater energy independence
- Want backup capability
- Want to increase solar self-consumption
- Are looking for protection against future electricity price increases
A Battery May Not Be the Right Choice If:
Your household may need a more detailed assessment if:
- Electricity consumption is very low
- Most electricity is used during daylight
- Your solar system is very small
- The proposed battery is significantly oversized
- The expected savings do not justify the investment
- You are buying only because of the government incentive
A government incentive can reduce the purchase price.
It cannot turn an unsuitable battery into a good investment.
What Is the Biggest Solar Rebate Mistake Homeowners Make?
The biggest mistake is focusing on the rebate amount instead of the final system economics.
For example:
Installer A
Higher advertised rebate + higher system price
versus
Installer B
Lower advertised rebate + lower final installed price
The second option could potentially leave you with a better overall deal.
Always compare:
System → Incentive → Installation → Warranty → Performance → Expected Savings → Final Price
How Solar Authority Can Help
At Solar Authority, we help Australian homeowners understand the changing solar and battery incentive landscape before they commit to a system.
We can help you assess:
- Existing solar
- Electricity consumption
- Solar system size
- Battery requirements
- Usable battery capacity
- Applicable federal incentives
- Available state incentives
- Installation requirements
- Backup requirements
- EV charging plans
- Expected energy savings
Our goal is simple:
Help you understand what you’re buying, what incentive may apply and what you could realistically save.
Get a Free Solar & Battery Quote
Find out what system size may suit your home and understand your estimated incentive and final installed price.
Free to enquire. No obligation to proceed.
Frequently Asked Questions
What is the solar rebate in Australia in 2026?
The main federal incentive for eligible rooftop solar is delivered through the Small-scale Renewable Energy Scheme (SRES) using Small-scale Technology Certificates (STCs). The value depends on factors including installation date, location and system characteristics.
Is there a battery rebate in Australia in 2026?
Yes. The Cheaper Home Batteries Program provides support for eligible small-scale battery systems connected to new or existing rooftop solar. The program is delivered through the SRES.
Did the battery rebate change in May 2026?
Yes. From 1 May 2026, battery STCs became subject to capacity-based tapering, with different portions of battery capacity receiving different STC factors.
Can I get a battery rebate if I already have solar?
Eligible battery systems can be connected to existing rooftop solar, subject to the current program requirements.
Does my battery installer need SAA accreditation?
For an STC-eligible battery installation, the Clean Energy Regulator requires installation by an SAA-accredited installer with the appropriate battery accreditation/endorsement.
Are all batteries eligible for the federal battery rebate?
No. The battery must meet the program’s eligibility requirements, including approved-product, capacity, installation and compliance requirements.
Is the solar rebate ending in 2030?
The SRES is scheduled to continue through 2030, while the solar PV deeming period reduces over time. Battery STC factors are also scheduled to reduce through 2030.
Should I buy solar or a battery because of the rebate?
Not necessarily. The incentive should be considered alongside your electricity usage, solar generation, battery size, final installed price, expected savings, warranty and long-term energy requirements.
How do I know how much rebate I will receive?
Ask your installer for a written breakdown showing the eligible system capacity, applicable STCs/incentive, installation costs and final out-of-pocket price.
What should I compare when choosing a solar installer?
Compare the complete installed system, not just the advertised rebate. Check product eligibility, installer accreditation, system design, warranty, installation inclusions, final price and the assumptions behind any savings estimate.
