Your Solar Panel & Solar Battery Questions Answered
Solar should be an exciting journey. At Solar Energy Adelaide we pride ourselves on helping people understand solar so they can make the best decision for their homes and business with local, expert advice.
Solar Battery FAQS:
How can I afford solar/buy now pay later?
$0 solar refers to solar financing plans that allow you to install solar panels and batteries with no upfront costs. Instead of paying for the system outright, you make scheduled repayments that are often lower than your current electricity bills. This means you can start saving on energy costs immediately while gradually paying off your solar system. It’s a smart, affordable option for South Australians who want to reduce their energy bills without the burden of a large initial investment.
At Solar Energy Adelaide, we help you switch from endless electricity bills to a tailored solar financing plan that suits your budget and energy needs. Most of our clients find that their repayments are less than what they were previously spending on energy, freeing up extra funds for life’s priorities, like a home renovation or family holiday. We’re committed to providing honest and transparent advice, so you can confidently make the switch to solar without upfront costs.
Read our in depth article on How To Finance a Solar System in Adelaide.
What government solar rebates are available?
South Australia offers generous government incentives to make solar installation more affordable for households and businesses. The main rebate is the Small-scale Renewable Energy Scheme (SRES), which provides Small-scale Technology Certificates (STCs) that reduce the upfront cost of installing solar panels. The value of STCs depends on your system size and location, but for most Adelaide homes, this can save thousands on installation costs.
To find out how much you may be eligible for in solar discounts, click here.
The Federal Solar Battery Rebate is a new initiative from the Australian Labor Government designed to make battery storage more affordable for homeowners. Eligible households can access up to $2,950 in rebates (plus potential low-interest loans) to help cover the cost of installing a solar battery.
This is a fantastic opportunity to boost your energy independence and reduce electricity bills—especially when paired with your existing solar system.
👉 Learn more about how the rebate works and who’s eligible here.
What are the best solar battery brands?
Our top pick for 2025 is the Sigenergy battery which has quickly taken over Tesla as the standout solar battery.
It’s a fully integrated, 5-in-1 home energy system that brings together next-gen battery storage, EV charging, smart energy management, and powerful AI.
We also install other trusted brands like Sonnen, Sungrow and the Alpha ESS, but the best battery really depends on your energy needs, budget, and existing solar setup.
👉 Read our full guide to the best solar battery brands in Adelaide to compare options and see which brands stand out for Adelaide homes and businesses.
How does a solar battery work?
Your home solar system comprises of two main components – the solar panels themselves, and the inverter. The solar panels absorb sunlight which is then converted into the right kind of electricity to power your home and appliances via the inverter. It’s key to make sure your panels and inverter both have the capacity to handle the amount of energy your home needs.
When more solar energy is generated than your home appliances need, a solar battery system will direct that energy to the battery for later use. This energy is stored, ready to be utilised when the solar panels are not generating (eg: at night time) or when the power demand of your home exceeds your solar production.
What size solar battery do I need for my home?
The right battery size depends on your daily energy usage, solar panel output, and whether you want backup power during outages. Most Adelaide homes benefit from a 10–15 kWh battery, which can store enough energy to power the home through the evening and even into the next morning.
If you use a lot of power at night, have a larger family, or plan to go off-grid in the future, a bigger battery may be more suitable. We assess your current usage and future needs during a free consult to make sure you get the best fit—not just the biggest price tag.
👉 Read our full guide to choosing the right battery size here.
Can you add a solar battery to an existing system?
You may be wondering if it is possible to add a solar battery to your existing solar system.
The short answer is yes, but you may not get all that a solar battery has to offer. You can retrofit a battery to any existing solar panel installation but it is crucial to have a solar expert inspect your existing system so they can match the correct size battery with your existing solar system.
When retrofitting a solar battery you may not have any protection against power blackouts. Some solar systems will give you temporary blackout protection via battery backup circuits, but extended blackout protection will not be possible with a retrofitted solar battery system.
Do I need a new inverter when adding a solar battery?
In most cases, yes — you will need a new inverter when adding a battery to your existing solar system. The good news is, there are two main ways to do this: either by adding a new inverter alongside your current one (known as AC coupling) or by replacing it with an all-in-one hybrid inverter (DC coupling). Both options come with their own pros and cons, depending on your current setup and future energy goals. We’ve broken it all down in a simple, easy-to-understand guide so you can feel confident about your decision.
Do I need a solar battery to charge an Electric Vehicle?
Aside from the obvious environmental benefits, owning an electric vehicle can also lead to significant cost savings.
By integrating a smart solar battery system with an electric vehicle charging station, you can use the energy produced by your household solar panels during the day to charge your car when you arrive home in the evening, without worrying about expensive electricity costs during peak times.
Additionally, powering your electric vehicle with solar-generated electricity means a smaller carbon footprint and no CO2 emissions.
For those with higher energy demands or those looking to go completely off-grid, upgrading the solar system and increasing battery storage may be necessary, along with considerations for the type of electric vehicle, it’s charging speed and your daily driving habits.
It is important to note that when considering solar storage batteries, owners must also factor in that electric car chargers can draw significant amounts of electricity very quickly and over extended periods. Therefore, any solar battery system should provide fast discharging and long battery life.
Solar Panel FAQS:
What are the best solar panels?
For the vast majority of customers in Adelaide, standard solar panels are more than enough to deliver reliable and efficient solar energy. Brands like Suntech, Trina and Canadian Solar provide excellent performance with plenty of options for added features, making them a solid choice for most homes and businesses.
On the other hand, if you’re after the latest innovations or have specific needs (like limited roof space, shading or a preference for eco-friendly manufacturing), premium panels from brands like REC are worth considering.
To read our detailed review on the best solar panels in Adelaide click here.
Are solar panels worth it in South Australia?
Absolutely! By harnessing Adelaide’s abundant sunshine, you can significantly reduce or even eliminate your electricity bills. With rising energy prices and generous government rebates, solar panels offer a smart, cost-effective way to power your home or business. At Solar Energy Adelaide, we’ve helped hundreds of local families and businesses save money while contributing to a cleaner environment. Let us help you find the right system to maximise your energy savings.
To discover the benefits of solar panels in Adelaide, click here.
How much does solar installation cost in Adelaide?
The cost of solar installation in Adelaide can vary depending on factors such as the size of the system, the quality of the components, and whether you opt for additional features like battery storage. On average, residential solar systems in Adelaide range from $3,000 to $12,000 after government rebates, with larger systems costing more. Importantly, from the immediate savings you make from your solar system, it only takes 2-3 years on average for solar systems to pay for themselves.
At Solar Energy Adelaide, we customise every installation to your specific energy needs and budget to ensure you’re getting the best value for your investment. Our team can also guide you through South Australia’s government incentives and solar rebates to reduce upfront costs. Contact us for a free, tailored quote.
What size solar system do I need for my home?
The size of your solar system depends on your household’s energy consumption, roof space, and future energy goals (like adding battery storage or electric vehicle charging). For a typical family in Adelaide, a 6.6 kW system has been a popular choice with this recently increasing to 7.9kw. To make an informed decision it pays off to have a free assessment at your home to recommend the perfect system for your needs. At Solar Energy Adelaide, our goal is to design a solar solution that’s tailored to your lifestyle and helps you future-proof your energy needs.
How long do solar panels last?
Solar systems offer high return on investments given they last for so many years.
Most high-quality solar panels come with a manufacturer’s warranty of 25 years. However, when installed properly using premium materials, solar panels can generate electricity for up to 40 years or more.
Thanks to advancements in technology modern solar panels also degrade much more slowly than older models.
For example, current solar panels have a degradation rate of only around 0.5% per year. This is significantly lower than the 1-1.5% annual degradation rate seen in panels installed 10 to 15 years ago.
This means that after 25-30 years of operation, your solar panels will still be operating at approximately 80-88% of their original efficiency.
That’s an impressive level of performance considering the longevity of the system.
To find out more on how long solar systems last and how to best maintain them, click here.
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Read MoreOur Adelaide Solar Services:
We proudly design and install solar solutions tailored to your home or business – built for today’s energy needs and ready for tomorrow’s.
With rising electricity costs, solar panel installation offers stable long term savings and financial security with minimal maintenance and solar rebates available.
The 2025 Federal Battery Rebate makes investing in energy storage more accessible than ever before.
We install top-tier battery brands built for performance, reliability, and smart energy management. Store your excess solar power and use it when it matters most—day, night, or during an outage—for greater independence and long-term savings.
Worried your solar system is underperforming?
If your solar system is not covering between 60-90% of your energy needs there is likely a problem that needs attention.
Our skilled technicians handle all aspects of solar system servicing, including solar panel repairs, solar inverter repairs and solar warranty assistance.