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: