In recent years, solar batteries have become an essential part of Australia’s move towards renewable energy. With the rising cost of electricity across the country, solar batteries offer homeowners and businesses a chance to reduce their reliance on the grid, store excess energy, and lower energy bills.
However, installing a solar battery system can still be costly. Fortunately, the Australian government offers solar battery rebates to help reduce the upfront investment.
These rebates, which are available at both the federal and state levels, make solar battery systems more affordable and accessible to a wider range of people.
In 2025 and 2026, there are important changes to the solar battery rebate program, and acting sooner rather than later can help you save significantly. In this post, we will explain the solar battery rebate Australia, how the rebate amount is calculated, upcoming changes in the rebate program, and a step-by-step guide on how to claim your rebate.
Federal & State Rebates Available
Federal Rebates: The Small-scale Renewable Energy Scheme (SRES)
The Small-scale Renewable Energy Scheme (SRES) is a federal initiative designed to help Australians reduce the upfront cost of installing solar systems, including solar batteries. Through this program, eligible households and businesses can receive Small-scale Technology Certificates (STCs).
STCs are issued based on the size of your system and can be traded to reduce the cost of your installation. For solar batteries, the amount of STCs you can claim depends on:
- The size of your solar battery system
- The location of your property
- The installation date
The number of STCs available is adjusted based on factors such as the year of installation, making it important to take advantage of this federal rebate before changes are made.
State-Based Rebates: The Cheaper Home Batteries Program
In addition to the federal rebates, there are also state-based incentives designed to make solar batteries more affordable. The Cheaper Home Batteries Program is an initiative aimed specifically at reducing the cost of solar batteries for Australian households.
In Queensland
Queensland homeowners can benefit from state-based subsidies under the Cheaper Home Batteries Program 2025. This program offers discounts that reduce the upfront cost of installing a solar battery system, making it easier for households to store energy generated by solar panels.
The program focuses on:
- Providing savings for larger battery systems
- Offering support for both new installations and replacements
- Ensuring that the rebate remains affordable for all eligible households
To qualify for the rebate, homeowners need to meet certain eligibility requirements, including income and energy consumption thresholds.
How the Rebate Amount is Calculated
The rebate amount for solar batteries is determined based on several factors. These include:
- Battery Size: Larger systems that store more energy tend to receive higher rebates. The size of the solar battery system installed on your property will directly affect the rebate you can claim.
- Location: The rebate amount can vary depending on where you live. States with higher electricity costs or greater energy demand may offer higher rebates to encourage more people to adopt solar energy solutions.
- Eligibility: To qualify for the rebate, you need to meet the eligibility criteria. This often includes being a homeowner, having an existing solar panel system installed, and being within the rebate program’s income and consumption limits.
- System Installation Date: Rebates are adjusted over time, so the date of installation can affect how much you can claim. As of 2025–26, rebates are expected to gradually decline, so it’s important to act sooner rather than later.
Upcoming Changes: Yearly Decline in Solar Battery Rebate Amounts
One of the most important things to understand about the solar battery rebate in Australia is that the incentive level will gradually reduce over time. This change reflects the ongoing decline in battery prices and the government’s plan to balance long-term support with market maturity.
According to the proposed changes for 2026, the STC factor will remain unchanged for the early part of the year but will decrease from May onwards.
- January to April 2026:
The STC factor will remain at 8.4, meaning eligible customers can still access the same rebate levels currently available. Installing a solar battery or solar system during this period allows homeowners to secure higher government incentives. - May to December 2026:
From 1 May 2026, the STC factor is proposed to drop from 8.4 to 6.8. This reduction means the rebate amount will be lower, increasing the out-of-pocket cost for installations completed after this date.
In practical terms, households that install before May 2026 can receive a noticeably higher rebate compared to those who delay. This change highlights why acting early can significantly improve the overall return on investment for solar battery and solar panel systems.
From 2025–26 onwards, rebate values will be adjusted each year, meaning households that delay installation may receive a lower benefit compared to those who act earlier.
What Does This Mean for You?
- The rebate will decrease annually
Starting in 2025–26, the rebate available for solar battery systems will begin to taper. As shown in the updated STC factor schedule, the rebate value reduces progressively each year through to 2030. Waiting longer could mean missing out on higher incentives currently available. - Installing before 2026 can save more
For many Brisbane households, installing a solar battery before the next major reduction takes effect can result in noticeably lower upfront costs. Locking in today’s rebate levels helps maximize the return on your investment. - Battery prices are falling, but incentives still matter
While solar battery prices continue to decline, government rebates still play a major role in improving affordability. Even with lower rebate values in future years, early adopters benefit from both higher incentives and earlier electricity bill savings.
How Solar Battery Support Will Change Based on System Size
The Cheaper Home Batteries Program will continue to support battery installations of up to 100 kWh, covering residential and small commercial systems. However, the way rebates are calculated will shift to better reflect system size and declining battery costs.
Adjustments to Discount Calculations
Discount calculations have been updated to align with falling battery costs while aiming to maintain an average discount of around 30% across a wide range of battery sizes. This ensures smaller systems continue to receive strong support, while larger systems receive a proportionate level of assistance.
STC Factor Applied by Battery Capacity
The STC Factor will taper depending on the total installed battery capacity:
- From 0 kWh up to 14 kWh (inclusive):
STC Factor applied at 100%
This ensures strong support for typical residential battery systems. - Every kWh greater than 14 kWh and up to 28 kWh (inclusive):
STC Factor applied at 60%
This tier is designed for larger households and higher energy usage. - Every kWh greater than 28 kWh and up to 50 kWh (inclusive):
STC Factor applied at 15%
This applies mainly to large homes and small commercial systems.
This tapered structure encourages efficient system sizing while continuing to support larger installations where needed.
Why Acting Now Still Makes Financial Sense
With the STC factor reducing year by year and system-size adjustments now in place, the financial advantage of early installation is clear. Households installing solar batteries sooner can:
- Access higher rebate levels
- Reduce upfront installation costs
- Start saving on electricity bills earlier
- Improve long-term return on investment
For Brisbane homeowners and businesses assessing solar storage, understanding these changes is critical to timing your installation correctly.
Step-by-Step to Claim Rebates
If you’re considering installing a solar battery system, here’s how you can claim your rebate:
- Install a Solar Battery System: The first step is to have a certified solar battery installer assess your property and install your system. Be sure to choose an installer who is familiar with the local rebate requirements.
- Check Eligibility: Ensure you meet the eligibility criteria for both federal and state-based rebates. This may include factors like your system size, energy consumption, and location.
- Apply for STCs: Once your system is installed, you can apply for Small-scale Technology Certificates (STCs). These certificates can be claimed through your installer, who will reduce the cost of your solar battery installation upfront.
- Submit Your Rebate Application: After installation, you’ll need to submit a rebate application through your state’s designated online portal or directly with your installer.
- Receive Your Rebate: Once approved, the rebate will be applied to your installation cost, or you may receive a cash payment. The exact process depends on your state and the rebate program you qualify for.
Check Your Eligibility Now
For businesses and large properties planning solar battery installations, choosing experienced commercial solar installers Brisbane is critical. System sizing, rebate eligibility, and compliance all play a major role in maximising savings under the current incentive programs.
Quick Solar is an Australian solar specialist supporting homes and businesses with tailored solar and battery solutions. With local expertise and a strong understanding of current rebate programs, the team helps customers maximize incentives and choose the right solar battery system based on real energy needs.
Don’t miss out on the chance to save on your solar battery installation! Check your eligibility for rebates today and take advantage of government incentives before they decrease.