Then there’s the inverter, which converts the battery’s direct-current (DC) power to alternating-current (AC) power so your home can use it. Measured in kW, the size of the inverter – also known as its power rate – specifies the maximum power the battery can absorb or discharge at any one time. Battery capacity is pretty simple – it’s how much electricity it can hold, measured in kilowatt hours (or kWh for short). Batteries can be installed with new solar panels, or added to an existing panel set-up.
The solar industry offers more than different batteries to store extra energy. Lead-acid or lithium-ion batteries are the two battery types used most frequently in home commercial solar battery archerfield solar power systems. The Tesla Powerwall 3 battery is a popular choice for many Australian households.
How much energy the battery can store, measured in kilowatt hours (kWh). The nominal capacity is the total amount of energy the battery can hold, while the usable capacity is how much of that can actually be used, after the depth of discharge is factored in. Keep in mind, a more complex installation can increase costs considerably, given that architectural and technical factors can increase the time, work and components a job requires. Battery prices shown below exclude installation and assume you qualify for the federal battery rebate, which only applies when the battery is paired with solar.
The Redback system in particular has an optional storage cabinet that takes your capacity up to 28.5 kWh. A Powerwall 2 costs around $12,000, with installation typically ranging from $2,000 to $3,500. Multiple units can be installed for larger energy needs, but the fixed battery size limits flexibility compared to modular systems.
Or if your household consumption is high during the day, you may directly use all your solar energy and not require a battery at all. It will take you to a page with some general information about the company and its energy storage products, along with solar battery reviews for that manufacturer from Australian reviewers. A customised Sungrow battery design ensures the battery capacity is correctly matched to your household energy consumption, solar generation and future electricity requirements. This helps maximise return on investment while delivering reliable long-term performance. A Sungrow battery can help reduce electricity bills by using stored solar energy during expensive evening peak periods.
Roger, the salesman, was fantastic.Brock from account was also excellent.The installation was hassle free quick neat and efficient. The whole process was very smooth and solar system installation very quickly. Solar batteries must be installed safely and in line with all relevant laws and standards. We make sure that only approved products are eligible under the SRES. The ongoing safety of approved products is the responsibility of the CEC and state and territory electrical safety regulators.
An existing Sungrow inverter is not automatically battery-compatible. Backup coverage depends on the installed system and electrical design. For backup, confirm the required equipment and supported circuits. Modular storage does not automatically mean every appliance can run together during an outage. Request a tailored quote for a new solar and battery system or a battery upgrade.
Not only do we power hybrid and electric vehicles and homes, but our battery technology also meets the stringent standards required to reliably power NASA spacesuits. We’re bringing our reliable and efficient technology to Australian families to power their homes. It's possible to increase savings from a home battery by connecting to a Virtual Power Plant (VPP). Whether it's in the form of a rebate, or a higher feed-in rate, VPPs can increase savings and potentially reduce payback times. Some batteries have Lithium Nickel Manganese (NMC) whereas others are Lithium Iron Phosphate (LiFePO4) or (LFP). LiFePO4 batteries are typically slightly cheaper, but prices vary depending on the manufacturer.
Accreditation does not guarantee quality, but it is a baseline filter. Second, the federal Cheaper Home Batteries rebate tiers from 1 May 2026 mean that larger batteries attract a smaller percentage subsidy than they do under the current flat rate. For a 15kWh or 20kWh system, the effective out-of-pocket cost post-May 2026 could be higher than it is today despite hardware costs remaining flat. From 1 May 2026, the rebate structure shifts to a tiered model based on battery capacity. The first capacity tier attracts a 100% rebate (essentially free up to a set kWh threshold), the second tier receives a 60% rebate, and the third tier receives a 15% rebate.
So, while solar batteries offer self-reliance and potential savings, careful research is key to navigating the cost landscape. State rebates for solar batteries can make installing a battery more affordable for homeowners and businesses. The rebate amount varies depending on the state and the type of battery system installed. At its most basic, new generation home energy storage, including solar and battery systems, is quite a simple concept but involves some very high-tech equipment.
This does not affect your day-to-day usage but can meaningfully improve the payback calculation over a ten-year horizon. Battery hardware costs globally are still on a downward trajectory, driven by expanding lithium iron phosphate (LFP) production in China. But in Australia, two policy changes are pushing effective retail prices in the other direction.
However, the greater the size, the less you will pay per kWh of battery storage. The WA solar battery rebate provides an additional saving off the install price of the battery. Synergy customers can save a further $130 per kWh while Horizon customers can save a further $380 per kWh. More sophisticated inverters can provide anti-islanding protection during a blackout, but still keep the solar panels and battery operating so that the house has some power. But expect to pay a fair bit more for such a system, as the hardware is more expensive and you may need more solar and battery capacity than you think to run the house for a few hours during a blackout. With the launch of the federal government’s Cheaper Home Batteries Program in 2025, interest in batteries has boomed.
It's also been designed for easy maintenance, making it practical for long-term residential use. The GoodWe Lynx Home U is specifically designed for off-grid residential energy storage, delivering safe and reliable performance for homes that aren’t connected to the main grid. The LiFePO4 chemistry ensures long-lasting durability, while the IP65-rated enclosure supports a wide range of installation locations.
Batteries used in hot climates will also need to be discharged to a lower DoD than those used in cold climates. And batteries used for short bursts of power, such as starting a car, can typically be discharged to a lower DoD than batteries used for a steady stream of power, such as powering a solar panel system. The simple payback time for a home battery depends on where you live, how much electricity you use at night, and whether you qualify for one or more rebates.
The Best Solar Battery: A Home Storage Guide
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4 min read
