Best home solar battery systems: 2026 Guide

Solar batteries allow you to use solar energy at night, when the sun isn’t shining. The battery charges during the day from solar generation and then discharges at night or at times of peak electricity prices.

Over 198,000 batteries have been installed since the introduction of the national rebate in July 2025.

A solar battery can be added to an existing system, or combined with the purchase of new solar panels.

Adding a solar battery can help to reduce electricity bills significantly. In many instances, the payback on the battery alone is well under 10 years, while for new panel and battery systems it sits at around 7 years.

Our solar battery storage guide explains everything you need to know about selecting the best solar battery for your home, with the functionality you need. We tell you how much they cost, explain the rebate and publish a list of the best solar batteries available in Australia.

How solar battery storage works

A solar battery storage system allows you to store the solar power your panels generate during sunlight hours for use at night. They can also be configured to sell energy to a Virtual Power Plant (VPP) in return for financial credits.

Solar panels typically generate most energy during peak daylight hours, when household demand for electricity is low. Instead of sending the excess energy back to the grid, solar batteries work by storing energy for later use.

Benefits of a solar battery system

Installing a solar battery can bring many benefits, here are some reasons why you might consider home battery storage:

• To save money and cut bills
• To take advantage of the battery rebate
• Use your own solar power at night
• To provide backup power
• Energy independence
• To reduce carbon emissions
• To get a good return on investment

For most consumers, the prospect of saving money and lowering electricity bills is the primary motive for installing a home battery. As battery prices drop with the rebate, the financial case for home storage is strong.

Installing a battery prior to moving house is not money lost either. Our analysis concludes that solar increases the value of a home and, adding battery storage increases the likelihood of a higher sale.

Backup power during a blackout

The ability to provide backup power is one of the key advantages of battery storage, though not every battery is equipped to deliver this benefit. Batteries can provide backup power during a blackout, but the functionality typically works with reduced load capacity. Backup power typically adds to the cost of the system too.

Battery lifespan

If you buy good solar panels, you can expect them to last for 25 years. The best solar panels will even operate at 90% of their rated output after 25 years. It is a different story for batteries. A solar battery lifespan is typically around 10-years, though performance warranties are often based around the usable capacity of the battery after 10, or the minimum throughout energy - whichever comes first. If you regularly cycle (discharge and charge) the battery, the warranty effectively shortens.

Connecting to a VPP

Home solar batteries can connect to a Virtual Power Plant (VPP), which can increase savings. When you connect to a VPP, you effectively hand control of your battery over to a third party operator in return for a financial credit.

While the financial savings are appealing, the battery may be cycled more often than otherwise planned, potentially shortening its usable life.

Solar battery prices

Adding home battery storage will increase your savings, but it also increases the purchase price of the system significantly. With the battery rebate in place, the payback period for solar panel and battery systems typically ranges between 5.8 - 9.6 years.

The table below shows typical solar battery prices for new systems, and additions to existing systems:

*Assumes a new hybrid inverter is needed to install the battery.

Prices for panel and battery systems

The tables show that the average solar battery price is around $850 per kWh of storage. This figure can be used as a rough guide; if you want to install a 10kWh battery with a new system, expect to add between $8,000 - $10,000 to the cost of the solar panels.

It is more economical to include solar battery storage as part of a new solar power system as opposed to adding a battery to an existing system.

Hybrid inverter addition to existing solar panels

If you already own solar panels, and are wanting to add a battery, you may need to install a new hybrid inverter. If you purchased a battery ready system, you will likely avoid this additional cost, provided the battery you select is compatible with your hybrid inverter.

The cost of a hybrid inverter varies depending on the size of the battery you need, but typically can add between $2,000 - $4,000 to the cost of the install.

Solar battery price variables

There are several variables that will affect the price you ultimately pay for a solar battery. The size, brand and quality of the battery you choose will have a big bearing on the price, as will any add-ons you may opt for. Battery price variables include:

• State solar incentives
• Added functionality eg. Backup power
• Compatability of existing system
• Battery brand
• Battery size

Battery rebate schemes

There are incentives available for installing a new battery with or without panels. These include:

• Federal battery rebate
• State-based incentive schemes
• Solar panel rebate (panels only)

Federal battery rebate

The Australian government introduced a solar battery rebate in July 2025. The rebate reduces the cost of installing a battery significantly, by up to 30% in some instances.

The rebate value is set to decrease slightly from May 1 2026 and then again from January 2027.

Value of the battery rebate

State government battery incentives

There are currently two state battery incentives available in New South Wales and Western Australia:

• A battery rebate in NSW for connecting to a VPP worth up to $1,500
• A battery rebate in WA worth up to $3,800

These state battery rebates further improve the financial payback of the systems.

Battery loans

Residents in Tasmania and the ACT can participate in schemes that provide interest-free loans for battery purchases. Each state has certain eligibility requirements for scheme participants.

Victoria has done away with it's interest-free loan for battery purchases but it still remains for solar panels. You can read more about the rebates available in Victoria here.

Battery savings and payback time

Solar panels have proved to be a worthwhile investment. It was a different case for home battery storage until the rebate was announced. Now, a panel and battery system can payback in around 7 years, though it varies by state and individual circumstances.

If you already own solar panels and are just adding a battery, the payback is longer, more like 10 years.

The table below shows typical savings and payback figures by state for new panel and battery systems:

* Figures assume a 6.6kW system with a 10 kWh battery for a household with average electricity consumption.

Solar battery financial results for a 10 kWh battery:

To further assess the viability of battery storage, we will compare the results for a 6.6kW system with a 10kWh battery in Sydney – with no battery, buying a panel and battery together and adding a battery to an existing system:

The results below are straight from our solar panel and battery calculator and show the typical cost, savings and payback period for a 6.6kW system with a 10kWh battery, in Sydney:

*Figures based on electricity bills of $610 per quarter.

Sizing a solar battery for your home

Deciding how many batteries you need, or what size battery, can be complex. You should consider:

• Your electricity usage
• When you use electricity
• The size of your panel system
• Your future energy needs

For the average Australian home, consider a battery of at least 10 kWh. The cost advantages of buying a larger battery outweigh any potential oversizing issues.

We’ve prepared a detailed guide to help you decide what size battery you need.

Selecting the best home battery

There are several factors to consider when selecting the best solar battery for your home. These include:

• Battery size
• Reliability
• Cycle life
• Warranty
• Functionality
• Value
• Australian presence

Battery size

The battery size is the storage capacity of the battery. Smaller batteries are suitable for smaller solar panel arrays, likewise, larger arrays are better suited to larger batteries. There is no point pairing a Tesla Powerwall 3 with a 3kW system.

Reliability of batteries

Any reliability issues should be factored into your selection of a battery.

Cycle life

The cycle life figure represents how many times the solar battery can charge and discharge before the battery is no longer usable. For most batteries, the cycle life is around 4,000 cycles which allows for daily charging and discharging over a 10-year period.

Warranty

Most solar battery product warranties are valid for 10 years. The performance warranties typically correlate with the number of cycles. Though warranties are a ranking factor, it is worth considering that currently no lithium-ion battery has been installed for 10 years or more in Australia.

Functionality

You need assess whether or not the battery can be configured to do what you want it to do. If you need backup power, not every battery can provide it.

Value for money

We prefer to use value as opposed to price as a ranking factor. If a battery is twice as dear but lasts three times as long, it is better value. Value is subjective too, it’s very much on you as the buyer, to determine what is value in your own eyes.

Australian presence

An Australian presence for the battery manufacturer is important in case something goes wrong. It’s far easier to speak to Australian representatives than it is a consultant overseas. A local presence also demonstrates the manufacturer’s commitment to the Australian battery market.

The best solar batteries

According to our research which, includes interviewing expert solar installers, the three best solar battery brands available in Australia are: Tesla, Sungrow and BYD. In reality though, there are a number of batteries that are worth considering. We feature them in the table of best solar batteries below:

Best home batteries

The top solar battery bands

The three best battery storage brands for larger household grid-connect systems are:

• Tesla Powerwall 3
• Sungrow
• BYD

Tesla Powerwall 3

The <a href="Tesla Powerwall 3 battery is a popular choice for many Australian households. It doesn’t require a separate hybrid inverter, it can provide backup power and its global reach brings with it an element of reliability and comfort for homeowners.

The Powerwall 3 has effectively replaced the Powerwall 2. With the rebate, it is good value and is proven in Australian conditions.

Sungrow

Sungrow’s stackable 3.2 kWh batteries use lithium iron phosphate (LiFePO4) cells. The batteries can be combined to create 12.8 kWh unit or even a 25.6 kWh unit or, any increment of 3.2 kWh up to 100 kWh.

The Sungrow battery is proving popular with homeowners as it is a good value option unit with a track record for safety and reliability.

BYD

The BYD battery is another modular, stackable battery that is a great value option for homeowners. Being able to add 2.76 kWh units as needed, provides system owners with flexibility as their electricity habits change.

The BYD storage unit also uses LiFePO4 battery cells.

All of the Tesla Powerwall 3, Sungrow and BYD batteries are a good battery fit for 5kW, 6.6kW and 8kW systems.

Enphase battery

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. While they are a high-performing battery, they don’t represent the same sort of value as other popular batteries.

Types of solar batteries

There are several different types of solar batteries. The most popular home storage units for grid-connect systems are Lithium ion batteries.

Lithium ion batteries

There are two types of lithium ion batteries:

• Nickel Manganese Cobalt (NMC)
• Lithium Iron Phosphate (LiFePO4)

Lithium iron phosphate (LiFePO4) batteries are generally considered to be safer. Though their capacity is typically smaller than Nickel Manganese Cobalt (NMC) batteries. The Tesla battery is a NMC battery. Other popular battery brands like Sungrow and BYD, use LiFePO4 battery cells.

Lead acid batteries

Lead acid batteries are commonly used for off-grid solar installations. They have a much lower rate of discharge than lithium ion batteries and it’s unlikely you’ll come across one for a grid-connect home battery install.

Flow batteries

Another less popular alternative is a flow battery that uses a liquid electrolyte to store charge. The Redflow ZCell battery is the most popular flow battery available in Australia.

Flow batteries can be fully discharged (100%) and can last longer than lithium ion units. Though, they are currently far more expensive to install.

Battery safety, installation and quotes

To ensure you get a safe and secure battery installation, there are several measures we recommend you take:

• Buy a quality battery from a reputable manufacturer
• Check your battery is on the CEC’s approved list
• Engage a reputable company to install your battery system
• Choose a safe location to install your battery
• Ask your installer about fire prevention measures

Reputable battery installers

Above all, we recommend that you get battery quotes from reputable solar companies that install quality home storage systems. An installer with the relevant SAA accreditation for home batteries will help to ensure you get a safe and secure installation.

If you’re ready to buy a home solar battery, you can get quotes from our network of pre-vetted installers that we trust.