Quick Summary: What You Can Save
$2,500 - $4,000+
Typical STC rebate for residential systems
Up to 40%
Off your total system cost
Applies Now
Available for systems installed in 2026
In This Guide
What Are Small-scale Technology Certificates (STCs)?
Small-scale Technology Certificates, or STCs, are the primary mechanism through which the Australian government subsidises solar panel installations. Think of them as a form of currency created when you install a qualifying renewable energy system. Each STC represents one megawatt-hour (MWh) of electricity that your solar system is expected to generate over its lifetime, or more precisely, from the date of installation through to 2030 when the scheme is currently set to wind down.
When you install a solar system, you earn a set number of STCs based on the size of your system, your geographic location (which determines how much sunlight your panels will receive), and the number of years remaining until 2030. Queensland homeowners are particularly fortunate here, as North Queensland sits in one of the highest solar radiation zones in the country, meaning you earn more STCs per kilowatt of installed capacity than homeowners in southern states.
Here is how the process works in practice: your solar installer (such as Smart Solar Group) typically handles the STC process on your behalf. They assign the STCs to a registered agent, who trades them on the open market. The value of those STCs is then applied as an upfront discount on your solar system purchase price. This means you do not need to wait for a cheque or process a complicated rebate form. The discount is applied at the point of sale, reducing your out-of-pocket cost immediately.
Key Takeaway
STCs act as an instant discount on your solar installation. Your installer manages the paperwork, and the rebate is deducted from your quote before you pay. For a typical 6.6kW residential system in Queensland, this can represent approximately $2,500 to $3,500 off the total cost.
The Federal Solar Rebate: Small-scale Renewable Energy Scheme (SRES)
The Small-scale Renewable Energy Scheme (SRES) is the federal government program that creates and regulates STCs. Established under the Renewable Energy Target, the SRES is designed to encourage Australian households and small businesses to invest in renewable energy by offsetting a significant portion of the installation cost.
Under the SRES, eligible solar PV systems up to 100kW in capacity can generate STCs. For most residential installations, which typically range from 6.6kW to 15kW, this means substantial savings. The scheme applies to solar panels, solar water heaters, heat pumps, and small-scale wind and hydro systems, although solar PV panels account for the vast majority of STCs created.
The SRES operates alongside the Large-scale Renewable Energy Target (LRET), which focuses on utility-scale renewable projects. Together, these programs form Australia's Renewable Energy Target, which aims to ensure that a significant percentage of Australia's electricity comes from renewable sources.
How STC Values Are Determined
The value of an individual STC fluctuates based on supply and demand in the marketplace. The government sets a maximum price cap of $40 per STC, but the actual trading price is determined by the market. In recent years, STC prices have generally traded between $35 and $40 each. Your installer will typically quote your system based on the current STC price at the time.
The number of STCs your system generates depends on three factors: the system size in kilowatts, the zone rating for your location (Queensland's zone ratings are among the most favourable in the country), and the deeming period, which is the number of years remaining until 2030. Each year that passes reduces the deeming period by one year, which means the total number of STCs generated, and therefore the total rebate value, decreases annually. This is a strong incentive to install sooner rather than later.
Queensland-Specific Solar Incentives
Beyond the federal STC rebate, Queensland residents may have access to additional state and local incentives that can further reduce the cost of going solar. Here is a breakdown of what is currently available for QLD homeowners in 2026.
Queensland Feed-in Tariff
While not a direct rebate on your installation cost, the Queensland feed-in tariff allows you to earn money by exporting surplus solar energy back to the grid. Current feed-in tariff rates in Queensland vary by retailer, but generally range from 5c to 12c per kilowatt-hour exported. Some retailers offer higher rates as part of promotional packages. This ongoing income stream accelerates your return on investment and can significantly offset your remaining electricity costs.
Interest-Free Loan Programs
Various financing options are available for Queensland homeowners, including interest-free loan programs offered by some installers and financial institutions. Smart Solar Group offers $0 upfront payment options with 0% interest, making solar accessible to households that may not have the capital for an outright purchase. These finance plans allow you to start saving on your power bills from day one while paying off the system over time, often with repayments lower than your current electricity bill.
Battery Incentives and Rebates
Battery storage is becoming increasingly popular in Queensland, and various incentive programs have been introduced to encourage uptake. While specific battery rebate programs can change year to year, the trend is toward greater support for home battery systems. Adding a battery to your solar system allows you to store excess energy produced during the day and use it at night, further reducing your reliance on grid electricity and maximising your overall savings.
Local Council Incentives
Some Queensland local councils offer additional incentives for solar installations, which may include reduced permit fees, streamlined approval processes, or community solar programs. Townsville City Council, Mackay Regional Council, and other North Queensland councils have historically been supportive of renewable energy adoption. We recommend checking with your local council for any current programs, or simply ask your Smart Solar Group consultant who will be across all available incentives in your area.
How Much Can You Save? Rebate Breakdown by System Size
The total rebate value you can expect depends primarily on the size of the system you install. Below is a guide to approximate STC rebate values for common residential system sizes in Queensland as of 2026. Note that these figures are estimates and will vary based on the current STC trading price.
| System Size | Approx. STCs | Estimated Rebate | Best For |
|---|---|---|---|
| 6.6kW | 65-75 STCs | $2,500 - $3,000 | Small to medium homes |
| 10kW | 98-110 STCs | $3,500 - $4,000 | Medium to large homes |
| 13kW | 127-143 STCs | $4,500 - $5,500 | Large homes, pools, EVs |
| 15kW | 147-165 STCs | $5,200 - $6,500 | High-usage homes, small commercial |
Important Note
These rebate values decrease each year as the deeming period shortens toward 2030. Installing in 2026 will yield a higher rebate than waiting until 2027 or later. The sooner you act, the more you save.
Eligibility Requirements
To qualify for the federal STC rebate on your solar installation in Queensland, you must meet the following criteria:
System Size Limit
Your solar PV system must be no larger than 100kW in capacity. For residential installations, this is almost never an issue, as most home systems range from 6.6kW to 15kW. Systems above 100kW fall under the Large-scale Renewable Energy Target instead.
CEC-Approved Components
Both the solar panels and the inverter must be listed on the Clean Energy Council (CEC) approved product lists. This ensures that only quality, tested equipment is eligible for the rebate. Smart Solar Group exclusively uses CEC-approved panels and inverters, so you can be confident your system qualifies.
CEC-Accredited Installer
The system must be designed and installed by a CEC-accredited installer. This is a non-negotiable requirement. An unaccredited installer cannot generate STCs, which means you would miss out on the rebate entirely. Smart Solar Group is a fully CEC-accredited installation company, ensuring your eligibility.
Australian Standards Compliance
The installation must comply with all relevant Australian Standards, including AS/NZS 5033 (Installation and safety requirements for PV arrays) and AS/NZS 4777 (Grid connection of energy systems via inverters). A compliant installation ensures safety, performance, and rebate eligibility.
Property Requirements
The system can be installed on residential homes, rental properties (with landlord permission), commercial premises, community buildings, and more. Both owner-occupiers and landlords are eligible. There is no means test or income threshold for the STC rebate.
How to Claim Your Solar Rebate
The good news is that claiming your STC rebate is straightforward, and in most cases your installer handles everything for you. Here is the step-by-step process:
Get a Quote from a CEC-Accredited Installer
Contact Smart Solar Group for a free, no-obligation assessment. Your quote will clearly show the STC rebate as a line-item discount, so you can see exactly how much you are saving.
Sign the STC Assignment Form
When you proceed with your installation, you will sign a form that assigns your STCs to your installer or their nominated agent. This is how the upfront discount is applied, as the installer receives the value of the STCs through the market and passes the savings directly to you.
System Installation and Inspection
Your system is installed by our CEC-accredited team and inspected for compliance. Once the system passes inspection and is connected to the grid, the STC process is finalised.
STCs Are Created and Traded
Your installer registers the STCs with the Clean Energy Regulator and trades them through the STC Clearing House or on the open market. You do not need to be involved in this process at all.
Enjoy Your Discounted System
The rebate has already been applied to your purchase price, so you start saving on both the system cost and your electricity bills from the moment your system is switched on.
Important Deadlines and Phase-Down Schedule
One of the most critical things to understand about the STC rebate is that it is not permanent. The Small-scale Renewable Energy Scheme operates on a phase-down schedule, reducing the value of the rebate each year until the scheme concludes at the end of 2030. Here is what this means for you:
- 2026: The deeming period includes years from 2026 to 2030, giving you approximately 4 years of deemed generation. This is the current year, and the rebate is still substantial.
- 2027: The deeming period drops to approximately 3 years, reducing the number of STCs and therefore the rebate by roughly 20-25% compared to 2026.
- 2028-2029: Further reductions each year, with the rebate becoming significantly smaller.
- 2030: The final year of the scheme. Only one year of deemed generation remains, making the rebate minimal.
- 2031 onwards: The STC scheme is scheduled to end. No further STCs will be created for new installations, meaning the upfront rebate disappears entirely.
The Bottom Line on Timing
Every year you wait, the rebate shrinks. Installing in 2026 gives you access to a significantly larger rebate than waiting until 2027, 2028, or beyond. Meanwhile, electricity prices continue to rise, making the combined savings of a higher rebate plus reduced power bills even more compelling when you act now.
Frequently Asked Questions
Do I need to apply for the rebate separately?
No. When you install with a CEC-accredited installer like Smart Solar Group, the STC rebate is built into your quote as an upfront discount. You simply sign the STC assignment form, and we handle everything else.
Is there a means test or income limit?
No. The STC rebate is available to all Australian property owners and does not depend on your income, pension status, or household size. Whether you earn $30,000 or $300,000 per year, you receive the same rebate.
Can renters get the solar rebate?
The system must be installed on the property, so it is typically the property owner who claims the rebate. However, landlords can install solar on rental properties and benefit from the rebate while potentially passing energy savings to tenants. Some landlord-tenant arrangements allow shared benefits.
Can I claim the rebate if I already have solar?
Yes, if you are adding additional panels or upgrading your system. The new panels will generate their own STCs. However, you cannot claim STCs again for panels that were already installed and claimed. If you are expanding an existing system, only the new capacity generates additional STCs.
What happens if the STC price drops?
The STC spot price fluctuates, but reputable installers like Smart Solar Group will lock in a price for you at the time of quoting. This means you know exactly what your discount will be before you commit. We absorb any market risk so you get the price you were quoted.
Are batteries eligible for STCs?
No. STCs are only generated by the solar panels themselves, not by battery storage systems. However, separate battery incentive programs may be available. Your Smart Solar Group consultant can advise on any current battery rebates applicable in your area.
Check Your Eligibility Today
Find out exactly how much you can save with government solar rebates. Our team will calculate your STC entitlement and show you the total discount on a system designed for your home.