Australia has seen a significant rise in solar energy adoption, with homeowners across the country embracing solar to reduce energy costs and environmental impact. However, before committing to a solar installation, it’s essential to be well-informed about the process. You should understand your legal entitlements. It’s also important to follow best practices under Australian standards. Many common questions arise before installation — from understanding your rights to government rebates. Other key concerns include preparing your roof and selecting a compliant installer.
Getting accurate answers to these frequently asked questions ensures you meet all legal requirements and get the best return on your investment. In Australia, solar installations are regulated by laws, guidelines, and programs such as the Clean Energy Council (CEC) accreditation scheme, Australian Standards (AS/NZS), and the Small-scale Renewable Energy Scheme (SRES) rebate. This FAQ guide has been written specifically to help Australian homeowners make informed, legally sound decisions and understand the full lifecycle of their solar investment — from installation to maintenance and end-of-life management.
Should I get my roof cleaned before installing solar panels?
Yes — under Australian Standards (AS/NZS 5033:2021), installers are required to mount solar equipment securely on structurally sound and clean roof surfaces. Cleaning the roof before installation helps identify defects such as cracked tiles, rust, or loose fittings, which could otherwise compromise safety. In many Australian regions, especially bushfire-prone or coastal zones, roofs may accumulate leaves, dirt, mould, or salt. A clean surface allows the installer to comply with Work Health and Safety (WHS) obligations and ensures long-term panel performance. While roof cleaning isn’t legally mandatory, many CEC-accredited installers recommend or include it in pre-installation site prep. It’s advisable to have the roof inspected and cleaned professionally if it’s been more than a few years since its last maintenance. Always confirm whether roof preparation is included in your contract to avoid delays or additional costs.
How to choose a solar installer?
In Australia, it’s a legal requirement that solar PV systems eligible for rebates under the Small-scale Renewable Energy Scheme (SRES) be installed by Clean Energy Council (CEC) accredited installers using CEC-approved products. Start by confirming the installer is listed on the CEC’s official website. Check their experience, especially in your local climate or grid zone (e.g., rural vs. urban settings). Ask for a detailed quote that includes system size, product models, warranties, and expected energy generation. Under Australian Consumer Law (ACL), all products and services must be delivered with acceptable quality and fit for purpose — so avoid generic or pushy sales pitches. Ensure your installer holds a current electrical contractor licence in your state (e.g., Energy Safe Victoria, Fair Trading NSW, etc.). Read independent reviews and confirm that the company provides at least a 5-year whole-of-system warranty, as recommended by the CEC’s Solar Retailer Code of Conduct.
How to check if a solar company is legit?
To verify if a solar company is legitimate in Australia, start by checking that it’s a CEC-accredited retailer. Make sure it uses only CEC-accredited installers and approved products — this is essential to access federal solar rebates under the SRES. Next, look up the company’s ABN (Australian Business Number) on the Australian Business Register (abr.business.gov.au). This will help confirm its registration, address, and trading history. Review its record with the Australian Competition and Consumer Commission (ACCC) or your state’s consumer affairs agency for any complaints. Check customer reviews on ProductReview.com.au, Google, or SolarQuotes, but be wary of fake testimonials. Ensure the company provides you with a written contract compliant with ACL, detailing cooling-off periods, warranties, payment terms, and performance estimates. A legitimate business will also provide a certificate of electrical safety post-installation and be listed with your state’s electrical safety regulator.
How much is the Australian government solar rebate?
The federal solar rebate in Australia is offered through the Small-scale Renewable Energy Scheme (SRES) and is calculated using Small-scale Technology Certificates (STCs). The value of your rebate depends on your location (postcode zone) and system size (kW). It also depends on the market value of STCs at the time of installation. As of 2025, homeowners typically receive a rebate worth $2,400 to $3,500 for a 6.6kW system. The number of STCs available reduces each year until the scheme ends in 2030. Only systems installed by CEC-accredited installers using CEC-approved panels and inverters qualify for the rebate. Most installers apply the rebate as an upfront discount. It is not a cash rebate paid directly by the government — rather, it’s processed via STC trading through solar retailers. Always confirm that the rebate value is clearly listed in your quote. And no additional charges are hidden under rebate processing fees.
Can I expand my solar system in the future?
Yes, expanding your solar system in Australia is possible, but it must comply with current Australian electrical standards and Clean Energy Council (CEC) installation guidelines. Before installation, speak with your installer about inverter sizing. Make sure the initial system includes an inverter with capacity for additional panels or plan for a second inverter later. You must also inform your Distributed Network Service Provider (DNSP) (e.g., Ausgrid, Energex) of any proposed expansion. You may need to submit a new grid connection application. Export limits may apply in some regions due to local grid constraints. Any system expansion must use CEC-approved components and be carried out by a CEC-accredited installer to remain eligible for STCs (if within the first year of original installation). Additionally, mixing panel brands or wattages requires compatibility checks. Expanding with battery storage or EV charging capability should be planned upfront to avoid costly redesigns.
How do you protect solar panels from birds?
Bird protection is essential for Australian solar systems. Particularly in suburban and coastal areas where pigeons and mynas can nest under panels. Nests can damage wiring, reduce airflow, and cause panel overheating, leading to potential fire risks. The most effective and legally compliant solution is to install solar mesh guards or critter barriers. These are metal or UV-resistant plastic meshes that prevent access beneath the panels without affecting panel ventilation or warranty. Installation must be done without drilling into panels or frames, as this voids warranties and breaches CEC installation standards. Additional deterrents include bird spikes on nearby structures and ultrasonic devices, though their effectiveness varies. Avoid poisons or traps — these are regulated under state wildlife and pest control