What proportion of electricity will a system produce?
All buildings consume vastly differing amounts of electricity. Electricity bills will be lower because often electricity from the PV system will be used instead of taking electricity from the mains. A typical UK three-bedroom family home built to 2006 Building Regulations uses 3,000-4,000kWh of electricity per year. This can vary considerably dependent on electricity consumption and how energy efficient the electrical appliances in a house are. It is possible for a 2 kWp PV system to supply all electricity needs if all possible energy saving measures are implemented.
