How to determine the amount of solar battery storage for your home?

Easy, get your most recent winter bill and see how much solar power you exported. This usually shown on your bill as ‘solar exports’ or ‘feed-in value’ and expressed in kWh. Divide this number by the number of days in that billing period, which gives your final value.

The final value is the amount you exported to the grid i.e. did not consume within your household.

Important, do not install a large solar battery storage system than what you can fill with the excess power – don’t over invest, unless you’re considering future requirements, such as additional solar panels, going off grid…etc

Solar Battery sizing table:

Daily winter export to grid in kWhRecommended Battery Size
Between 2 kWh and 4 kWh4.8 kWh
Between 4 kWh and 7 kWh7.2 kWh
Between 7 kWh and 10 kWh9.6 kWh
Between 10 kWh and 12 kWh12.0 kWh
Between 12 kWh and 14 kWh14.4 kWh
Greater than 14 kWh16.8 kWh

How does it work?

Review at your last mid-winter electricity bill to determine your existing daily solar system export to the grid in kWh.

Select the appropriate sized retrofit solar battery package after reviewing our solar battery sizing table above.

Purchase your selected solar battery package clicking on the “Buy Now” button which will take you to the shop page on our website.  Alternatively you can contact us directly via mail or phone and make the payment transaction via EFT.

Search for a suitably accredited solar installer that also has solar battery installation accreditation by going to CEC site, or contact our preferred installers listed on our page.  Your installer will handle any electrical regulatory requirements that may arise and ensure that any modifications or upgrades to your home distribution board that may be required are dealt with.