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Are Solar Batteries Worth It?
Are you thinking about installing solar batteries on your existing solar system but you are unsure if they are worth your money? GES Energy are expert installers for solar batteries in Australia and we can set up your system from design to installation.
We can't deny that solar panels are booming in the market for quite some time now. And in line with their popularity and demand, the significant expansion of solar installations has also put more strain on the already fragile electrical grids. Thus, in order to address this, households have started to use solar batteries as a solution to store solar energy, which leads us to question, "Are solar batteries worth it?"
But before we answer that, let's learn first what solar batteries are.
What are Solar Batteries?
A solar battery is a tool that you can use to store extra energy accumulated from a solar panel. Its main purpose is to provide backup power in case your solar battery system has run out of energy. Typically, it is made up of three main components - lithium, electrodes and titanium mesh.
The stored energy collected on a solar battery can basically be used during power outages or when your solar panels are not enough to generate electricity inside your home. Typically, solar batteries are also used at night and during rainy days when there's not much sunlight.
Evidently, your solar power system may benefit greatly from the inclusion of a solar battery. Aside from providing you with more alternatives to power your home, solar batteries can also help you store extra electricity that you can use when your solar panels are not producing enough.
How Do Solar Batteries Work?
Solar batteries act as an energy storage for your solar battery system. The excess solar energy generated by the solar panels that you don't use immediately is stored in solar batteries for you to use later.
Technically, as sunlight hits the solar panels, the energy is converted to direct current electricity which goes inside the battery. It then leaves the battery and enters an inverter to be converted into alternating current electricity that your home can use.
As it happens, solar panels generate electricity at the time of the day when your house does not consume that much electricity. Using a standard grid-tie solar system, the excess solar power is sent back to the electrical grid.
However, when you use solar batteries on your solar panels, the excess electricity is stored in the battery instead of being sent directly to the grid. You can then use the stored energy in your batteries when the sun sets and your panels aren't producing enough instead of paying for electricity from the utility.
Types of Solar Batteries
Lead-acid
When it comes to solar energy storage, lead-acid batteries are the standard type to use. Because they are reliable and practical to use, many homeowners still opt for this kind of solar battery despite the fact that it can only store a little quantity of energy per kilogram of weight. Lead-acid solar batteries now last longer and can give power for up to eight hours, thanks to recent technological advances.
Lithium-Ion
Lithium-ion batteries are one of the most popular types of solar batteries used in electric vehicles and industrial set-ups. Compared with lead-acid batteries, lithium-ion batteries have a higher battery storage density which allows them to store more energy in smaller volumes.
In addition, they also have a longer lifespan, which means that you can maximise their full warranty of up to 10 years. Lithium-ion batteries have a higher depth of discharge than other types of batteries, allowing you to utilise your battery's internal energy for a longer period of time.
Advantages of Solar Batteries
Emergency Backup Power
Ultimately, solar batteries are designed to provide you with an emergency backup power in the event that your solar panels ran out of energy. With the help of solar batteries, you can access power even if your household or the whole facility experiences a power loss or is disconnected from the grid.
Saves Energy Bills
One of the many advantages of battery storage is the reduction of your electricity bills. By using a solar battery storage in your household, you can generate up to 80% more solar electricity by adding 4 kWh battery to a 5 kW solar system. As feed in tariff (the payment you receive for supplying energy to the grid) winds down, the amount you save on your power bills increases.
Reduced Carbon Footprint
Since solar energy is a renewable resource, you can always consume more of it without worrying about its impact. It is clean and it doesn't produce any "greenhouse" gas that can trap harmful carbon dioxide. It also avoids the environmental damage caused by fossil fuel exploitation. In addition, solar energy consumes little to no water compared to power plants that make electricity using steam turbines.
Increased Self-Reliance on Your Solar System
Solar energy is mostly used during the night and when the sun's not out, which is why solar batteries help you increase your energy independence to your solar panel system. By being energy sufficient, you are also being mindful of how you control your household's overall power supply.
Low Maintenance
Solar panels do not use machine parts that need regular replacement, which is why they only require little to no maintenance at all. Just always ensure to keep them clean and in good condition to maximise their function.
Increases Home Value
Having solar panels installed on your house might raise its value. The cost savings from extra power and the decline in electricity prices are both positive aspects when weighing the advantages and disadvantages of solar systems. Thus, solar-equipped homes are quite valuable and can increase a home's market value by up to $15,000 above those that don't.
Disadvantages of Solar Batteries
Solar Batteries are Expensive
We all know that solar batteries aren't cheap. Hence, they are even more expensive when you are just getting started. Although they are not required on every solar system, they can become necessary when you go off the grid.
A solar system's cost will increase significantly when batteries are added and it may even cost more if you buy top-of-the-line lithium batteries for an entire off-grid system. You can expect to pay an average of $8,000 just on battery costs alone.
Solar System Becomes More Complex
Your solar system can become more complex with the addition of solar battery storage design and installation. This means that more components can also prompt more errors. To prevent this, follow the right battery size and design of the cables that you will add. Also make sure that your solar battery systems are placed in a cool area to prevent overheating.
Additional Battery Storage
Solar Batteries are larger and can take up more space than regular batteries. Depending on the size and type of battery you will use, you may need to allocate an additional space for your battery storage for proper ventilation and additional safety purposes.
How Much Does a Solar Battery Cost?
Solar batteries are generally expensive because of how they were made and the materials used to produce them. Costly materials are required to create the electrodes and other components that store and release energy. Depending on the battery's composition and properties, a solar battery can cost you with an average price of $200 going up to $18,000 with battery installation costs not included yet.
Some people resist buying a solar battery because of the price. However, solar battery prices in general still depends on its size and power; the bigger the kilowatt hours (kWh) storage capacity, the more expensive it is.
But although solar batteries may seem expensive on your initial purchase, once you've gained energy independence, you will continually save money on your electricity bill over time.
The average cost of installing lithium-ion batteries for residential solar panels ranges from $7,000 to $14,000. While small-capacity lead-acid solar batteries cost as low as $200. However, they are normally used as emergency backup power for recreational vehicles and won't be able to power anything in your home.
How Long Do Solar Batteries Last?
Like regular batteries, solar batteries also need regular recharging from time to time. When charged fully, home batteries can last by up to five days. While battery manufacturer like Tesla, makes batteries that can last for seven days long without charging.
If you are planning to buy a solar battery, you should expect and prepare to replace them regularly to be able to maximise their battery storage capacity. A standard solar battery can last for 20 years but with proper maintenance, it can even last for 30 years.
How much Solar Battery Storage Will I Need?
If your goal is to make the biggest financial savings as possible, you should provide enough battery storage to power your home completely.
Approximately 2 to 3 batteries should be enough for your energy needs in case you ran out of stored solar power in your energy storage system. But if you just need to maintain your electricity during a grid outage, one solar battery should be enough.
Conclusion
Now that we've weighed down the advantages and disadvantages of solar batteries, it's time for us to answer "Are solar batteries worth it?" Solar batteries are an expensive investment, but if you live off the grid, they may be able to help you save money by significantly reducing your electricity bills. Instead of paying for energy acquired from different sources, solar batteries can power your home using renewable energy.
What's more, you can even receive battery incentives and rebates from your government to help offset the cost of adding a solar battery to your system.
When thinking about how much solar battery storage will you need to add on your existing system, it is best to consult with solar installation experts.
Trusted Solar Installation Specialists in Australia
Whether you are looking for solar batteries for your residential, commercial or industrial needs, you can count on GES Energy for quality products and expert services.
We are solar installation specialists in Australia that provide multi-disciplinary engineering services in major areas of renewable energy and technologies. As experts in the Design, Supply, Installation and Maintenance of Solar Batteries, we can provide you with professional grid-connected and off-grid solutions for your solar projects.
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Solar energy can be a smart way to generate electricity for your home or business. However, solar panels only produce energy when sunlight is available. This means you may still need electricity from the grid during the evening or when solar production is low. Battery storage provides a way to store energy for later use. A Deye inverter and battery storage system can work with solar panels to manage energy production, storage, and household or business consumption. Deye offers residential hybrid inverter and energy storage solutions designed for different system sizes and applications. For property owners looking for Deye Inverter & Battery Storage in Greater Victoria , GES Energy can help with system design, product selection, and professional installation. The right solution depends on your electricity usage, existing solar system, property requirements, and energy goals. What Is a Deye Hybrid Inverter? A hybrid inverter is an important part of a solar and battery storage system. It helps manage electricity from your solar panels, battery, home, and the grid. This allows energy to be used where it is needed and stored when appropriate. Deye offers a range of residential hybrid inverters for different applications. Its Australian residential range includes single-phase and three-phase models with different power capacities and battery configurations. This flexibility can make Deye suitable for a range of homes and energy requirements. However, the correct inverter should always be selected based on the property's electrical system and expected energy demand. How Does Deye Battery Storage Work? The process is straightforward. During the day, your solar panels generate electricity. Your home or business can use that electricity immediately. If your solar system produces more energy than you need at that time, compatible battery storage can store some of the excess energy. You can then use the stored energy later. This can be particularly useful when solar production falls in the evening or during periods when your electricity demand is higher. Deye's current home energy storage systems combine battery storage, hybrid inverter technology, and energy management features. Some Deye systems are also designed to provide backup power to connected loads during a grid outage. Why Consider Battery Storage in Greater Victoria? Energy consumption does not always match solar production. Your solar panels may generate their highest output during the middle of the day, while your household may use more electricity in the morning and evening. Battery storage can help close this gap. Instead of using all your solar electricity immediately or exporting excess energy, you can store some of it and use it later. GES Energy explains that solar batteries can store solar energy for later use and help property owners make greater use of their solar generation. The company provides battery storage design and installation services across Victoria. Store More of Your Solar Energy One of the main reasons people consider battery storage is to make better use of their solar power. A solar system can produce more electricity than your property needs at certain times of the day. A compatible battery can store some of that excess energy. You can then use the stored energy when your solar panels are producing less electricity. This can create a more flexible energy system. Instead of relying only on the timing of solar production, you have the option to use stored energy when it suits your needs. Battery Storage for Backup Power Power outages can interrupt important household and business activities. Depending on the system design, a battery storage system can provide backup power to selected loads when the grid goes down. Deye's current residential energy storage range includes systems with backup support for connected loads. The amount of power available during an outage depends on the selected equipment, battery capacity, electrical configuration, and the loads connected to the backup system. For this reason, backup requirements should be discussed during the design stage. You may want to keep essential lighting, refrigeration, communications, or other important equipment operating during an outage. Deye Inverter and Battery Storage for Existing Solar Systems You do not necessarily need to install a completely new solar system to consider battery storage. In some situations, battery storage can be added to an existing solar installation. However, compatibility must be checked first. Your existing inverter, solar array, electrical system, and proposed battery need to work together correctly. A professional assessment can identify the most suitable approach. GES Energy provides solar battery solutions for Victorian homes and businesses and can assess your existing energy setup before recommending a storage solution. Choosing the Right Battery Size Battery capacity is normally measured in kilowatt-hours, or kWh. The capacity you need depends on how much electricity your property uses and how you want to use the battery. A household that mainly wants to store excess solar energy may have different requirements from a household that wants significant backup capacity. Businesses can also have different requirements because their electricity demand may be higher or concentrated at particular times. Deye offers scalable storage solutions. For example, its current All-In-One Home ESS range can be configured with different inverter power levels and expandable battery capacity. The right size should be determined from your actual energy usage rather than simply choosing the largest available battery. Deye Battery Storage for Homes Every home has a different electricity profile. Some homes use most of their electricity during the day, while others have higher demand in the evening. A battery can help shift stored solar energy to the times when it is needed. This can make your solar system more useful throughout the day. For homeowners in Greater Victoria, a professional energy assessment can help determine whether battery storage is suitable and what system configuration may work best. Deye Battery Storage for Businesses Businesses can also benefit from energy storage. Commercial properties often have larger electricity loads and may use significant amounts of energy during operating hours. Battery storage can provide another way to manage energy generated by a commercial solar system. Depending on the system design, stored energy can be used when required, while smart energy management can help coordinate solar generation, battery charging, and electricity consumption. Deye also provides energy storage solutions for commercial and industrial applications, with different system configurations available for different energy requirements. Smart Energy Management Modern battery systems do more than simply store electricity. Energy management is an important part of understanding how your solar and battery system operates. Deye's current residential energy storage systems include energy management and monitoring features. Depending on the selected system, users can monitor energy production, consumption, battery status, and other system information. Monitoring can help you understand how much energy your solar panels are producing and how your battery is being used. This information can also help you make better decisions about your household energy consumption. Why Professional Installation Matters Battery storage is a significant electrical installation. It needs to be designed and installed correctly for safe and reliable operation. Energy Safe Victoria notes that battery energy storage systems have important safety requirements and that installations should meet applicable regulations and standards. It also highlights the need to assess switchboards when adding battery systems or other supplementary supplies. Professional installation is therefore an important part of the process. A qualified installer can assess the property, review the electrical system, determine suitable equipment, and configure the system according to the installation requirements. Why Choose GES Energy? Choosing the right battery is only one part of a successful energy storage project. The design and installation are equally important. GES Energy provides solar battery design and installation services for residential and commercial customers across Victoria. The company states that its Victorian battery installers are accredited by Solar Accreditation Australia and that it provides a five-year workmanship guarantee on its solar power projects. GES Energy can help you understand your available options and determine whether a Deye inverter and battery system is appropriate for your property. A Complete Approach to Solar and Battery Storage A good energy storage system should be designed around your property. Your electricity consumption, solar generation, backup requirements, available space, and future energy needs should all be considered. Deye offers different inverter and battery configurations, including single-phase and three-phase options. This allows the system to be selected according to the property's requirements rather than using one standard solution for every customer. GES Energy can assess these factors before recommending a system. This helps ensure that the inverter and battery are appropriate for your existing or planned solar installation. Is Deye Inverter & Battery Storage Right for You? Deye inverter and battery storage may be worth considering if you already have solar panels or are planning a new solar system. It can also be an option if you want to store excess solar energy, increase your use of stored energy, or explore backup power. However, the best system depends on your property. Your electricity consumption and solar generation should be reviewed before selecting equipment. A professional assessment can help you understand the available options and avoid choosing a system that does not match your actual requirements. Get Deye Inverter & Battery Storage in Greater Victoria If you are considering Deye Inverter & Battery Storage in Greater Victoria , GES Energy can help you explore your options. From system design and equipment selection to installation, professional guidance can make the process easier and more straightforward. Battery storage can help you use solar energy beyond the hours when your panels are producing electricity. With the right inverter, battery, and system design, your property can have a more flexible approach to energy management. GES Energy provides solar and battery storage solutions across Victoria. Contact the team to discuss your energy requirements and find out whether a Deye inverter and battery storage system is suitable for your home or business. Frequently Asked Questions
In 2026, a NSW home can cut roughly 30% off a new battery through the federal Cheaper Home Batteries Program, then earn an extra NSW payment by joining a virtual power plant. Businesses now get even more: since 1 September 2026, a new NSW business battery discount can be combined with the federal one. NSW battery rebates at a glance There are two main sources of help: the Australian Government's battery discount and the NSW Government's Peak Demand Reduction Scheme. Which ones you can get depends on whether you are a home, an apartment building or a business.
In 2026, a NSW business can combine up to three government incentives on one solar and battery project: the federal solar discount, the federal battery discount and the new NSW business battery discount that started on 1 September 2026. Together they can cover a large share of the project cost, but only when the job is done by the right kind of installer. Commercial solar and battery incentives at a glance A NSW business can stack federal and NSW incentives on the same project. Each is claimed through your installer as a discount on the quote.
