Solar home battery rebate: The big new changes you need to know

Author : Beasley Lynn | Published On : 26 Sep 2026

These modules are normally topped with an inverter, control unit or other component that helps the stack work as a single unit. Once a battery is installed, it should remain at the property for the duration of the warranty period or the end of 2030, whichever is later. If you move a battery to another premises, it will no longer be eligible to claim STCs. The average national payback period for a 10 kWh system has dropped to roughly 8 years. However, for households in NSW or WA on Time-of-Use (ToU) tariffs, the payback can plummet to as low as 4.6 years.
Some batteries back up your whole home, others dsw energy just essential circuits. You may need a hybrid inverter or an AC-coupled battery (like the Tesla Powerwall) that works alongside your existing inverter. Match your battery size to the right solar system for maximum self-consumption. Explore Alpha ESS residential energy-storage products and configurations.

At Off Grid Solar Kits, we have installed hundreds of reliable, high performing, stand-alone power systems Australia wide. Off Grid Solar Power can be as reliable and affordable as being connected to the grid. If your area has the right wind data, we can install and commission the right wind turbine for you. Deep cycle solar batteries are the heart of any solar battery system, and they come in many types. Lithium fusion solar batteries and tubular gel batteries are the most common for this purpose. By storing excess solar energy for use when the sun isn’t shining, these systems increase energy independence, reduce reliance on the grid, and support a more sustainable lifestyle.
Flow batteries can be fully discharged (100%) and can last longer than lithium ion units. Lithium Iron Phosphate (LFP) batteries are generally considered to be safer. Though their capacity is typically smaller than Nickel Manganese Cobalt (NMC) batteries. Most popular battery brands like Tesla, Sungrow and BYD, use LFP battery cells. Enphase’s IQ 5P battery comes in 5 kWh units that can be added to at any point in time. The Enphase solar battery also boasts one of the longest warranties in the industry.

However, the real-world track record is still being established, as many of the popular home batteries on the market today have only been available for five to six years. In this example, both systems technically meet the family’s energy needs. The Powerwall 3 is a simple, powerful one-box solution with a proven track record, while the Sigenstor offers more flexibility and lower upfront cost. The best choice ultimately depends on whether the family values simplicity and brand reputation (Powerwall) or modularity and long-term expandability (Sigenergy).
Then, select up to three installers, and hit ‘Get quotes from selected companies’. BYD batteries are designed to DC-couple with Fronius’ latest Gen24 inverter range. I’d heard the buzz about their Sigenstore all-in-one system—especially its optional 25kW bi-directional DC EV charger—so I had to see one being installed. In my Best Inverters for 2025 blog, I mentioned that Sigenergy is the new kid on the block in Australia. It seems to have taken installers by storm, rocketing to second place in its first year with 17% of the vote. Both have performed well, with the Tesla App being a joy to use—but it’s not without its bugs.

They will be able to assess your individual circumstances and recommend a system that is right for you. If you’re curious about getting a rough idea as to how much you could reduce your reliance on electricity companies through implementing a solar + storage solution, try our new online calculator. The South Australian government has partnered with Tesla to create the world’s largest VPP, with over 50,000 solar batteries. Other Australian states are also developing VPPs, and the Australian Energy Market Operator (AEMO) has set a target of 100,000 VPPs by 2025. Using the Tesla Powerwall battery system as an example, here’s how residential battery storage works. The best type of battery for you depends on your budget, needs, and location.
A combined system with a new battery and a new solar system will normally have shorter payback (recouping the costs). Installing a new solar energy system and new battery at the same time has financial and practical advantages. Many VPP programs have specific product requirements, it’s important to review these requirements to ensure the system you install can participate in your VPP of choice.

As battery prices drop with the rebate, the financial case for home storage is strong. A modular solar battery in Australia offers a practical way to build storage capacity without committing to a single large upfront purchase. Whether you are starting with a small entry-level unit or planning a whole-home, EV-ready setup, the right first step is getting your inverter and system design right from day one. Yes, as long as your system has spare inverter capacity or you upgrade to a hybrid inverter. Installers can often retrofit a modular solar battery to existing panels in Australia, though older systems may need a compatibility check first.
Firmware updates are manual and adding higher capacities may require additional inverters or panels to optimise performance. Easily evaluate options, features, insights, and pricing, so you can choose the best home battery storage for your energy needs. The battery trial encountered a number of technical challenges, including several batteries developing faults and having to be removed or replaced. Several models are no longer available, as companies collapsed or withdrew from the battery market, or the products were superseded by new versions.
The highest amount of power a battery can deliver in kilowatts (kW) for a short period (usually up to 30 seconds). The percentage of a battery’s total capacity that can be discharged without significantly affecting its lifespan. To estimate the average daily kWh output of a solar system in Australia, you can use the SAA (Solar Accreditation Australia) guideline, which suggests multiplying the system size (in kW) by 3.9. The sonnenBatterie isn’t limited to storing energy generated by a PV system. Just connect it to the sonnenBatterie to store its energy when the sun isn’t shining. Since you are generating heat too you’ll be even more independent.

Lithium-ion batteries are the most commonly used, but you’ve probably heard of lithium-ion batteries, gel batteries, deep cycle batteries, and many others. Remember… the “best” solar battery ultimately depends on your specific needs and priorities. Consider factors like budget, energy requirements, desired features, and system compatibility when making your choice. For those seeking guidance without the pressure of a hard sell, Energy Matters provides a valuable resource.
Sun-drenched regions with frequent grid outages benefit greatly from batteries, storing excess energy for nighttime or emergencies. The cost-effectiveness might be lower in areas with reliable grids and less sunshine. With the Tesla Powerwall, multiple batteries may be installed together, stacked using a special mount. That capacity would provide the average Australian household with more than a couple of days of power supply purely from battery storage.

The solar battery landscape is constantly evolving, with new technologies emerging and trusted products cementing themselves as market leaders. If you’re looking for the best solar battery Australia has to offer, Plico’s experts have done the research so you don’t have to! As a tech-agnostic company, Plico focuses on helping our members get the best-performing solar batteries and solar systems at the best prices. Let’s see which products deliver the most reliable, efficient and cost-effective storage solutions. Home solar battery storage system store excess energy generated by your solar panels during the day and make it available for use when needed.