Prices for PV systems vary depending on the size of the system to be installed, type of PV cell used and the nature of the actual building on which the PV is mounted. The size of the system is dictated by the amount of electricity required.
For the average domestic system, costs can be around £5,000- £7,500 per kWp installed with most domestic systems usually between 1.5 and 3kWp. Solar tiles cost more than conventional panels and panels that are integrated into a roof are more expensive than those that sit on top.
If you intend to have major roof repairs carried out it may be worth exploring PV tiles as they can offset the cost of roof tiles.
You could be saving up to 1.2 tonnes of CO2 a year and this could mean around £250 off your electricity bill*. A 2.5kWp system could provide enough electricity to meet around half a household’s electricity needs each year.
Grid connected systems require very little maintenance, generally limited to ensuring that the panels are kept relatively clean and that shade from trees has not become a problem. The wiring and components of the system should however be checked regularly by a qualified technician.