A typical home is estimated to use about 20kWh of energy a day and therefore a 5kW solar system would meet the daytime power needs of that home. Solar panels produce much more power when they are north-facing and get direct sunlight – i.e. they are not shaded by other larger buildings or trees – and your typical Geelong solar company will calculate the ‘peak sun hours’ when they visit your home to assess it.
The more peak sun hours, the more electricity will be produced.
In Australia, it takes between two to seven years for that solar panel system to pay for itself. When you buy a solar power system in the Geelong area, you can expect payback within about five years.
For households that use less energy during the day – i.e. people who are out during weekdays – the export of solar power to the grid is typically 75 percent, whereas if residents are at home during the day, this is more likely to be 50%.