The size of battery that you need will vary depending on a number of factors, including how much energy your home uses during the evening or when there's limited sunlight, as well as how much energy your solar panels can produce.

When your solar panels are producing more electricity than your home requires, if you don't have a battery at all or your battery is already full then your system will automatically sell any surplus solar electricity back to the grid. This is called energy export.

When you have battery storage installed as part of your solar system, it means you can keep solar electricity for later, and further reduces how much electricity you will need to pay for from your energy supplier. This is particularly beneficial as the rates you typically receive for exporting electricity are much lower than those you'd pay to buy energy from the grid.

Other considerations for which battery is right for you include how much space you have available to install the batteries, and what your budget is.

Once our solar experts have more information about your home and requirements they will work with you to fine-tune the battery storage needed for your system.