The output of a solar PV system depends on its size. The most common household systems are 5kW or more, although some property owners have installed much larger systems. The table below shows the average daily production of some common grid-connected systems throughout Australia.
A typical Australian house consumes around 18 kilowatt hours (kWh) per day so a 1-2kW system displaces an average of 25-40% of your average electricity bill. Solar panels produce more energy in summer than they do in winter.