Solar panels are increasingly being installed by homeowners who are worried by rising electricity costs, and who want a system that both cuts their bills and produces greener energy. We explain what you need to know before installing a solar photovoltaic (PV) system on your roof..
To size your solar panel system you need to work out how much electricity you use and when you use it. As a guide, a typical home uses 20kWh of energy a day. A 5kW solar system would meet most of the daytime power needs of such a home.