To power an average Australian family home, a 5kW solar power system is considered a sizable and efficient option, providing ample electricity. If you find that a 5kW solar system is insufficient for your household needs, it's possible that your home is consuming electricity well above the Australian average kWh domestic consumption rate. In such cases, you may need to consider energy-efficient measures or upgrading to a larger solar system to cater to your high energy consumption.