PV requires only daylight, not direct sunlight to generate electricity and so can still generate some power on a cloudy day.
Photovoltaic systems use cells to convert sunlight into electricity. The PV cell consists of one or two layers of a semi conducting material, usually silicon. When light shines on the cell it creates an electric field across the layers causing electricity to flow. The greater the intensity of the light, the greater the electricity produced. PV cells are referred to in terms of the amount of energy they generate in full sunlight; known as kilowatt peak or kWp.
Is it suitable for my home?
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 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.
PV systems produce no greenhouse gases and each kWp can save approximately 325kg of carbon dioxide emissions per year, adding up to about 8 tonnes over a system's lifetime.
Errors and Omissions Excluded. Ashford & Cranbrook Roofing Partnership terms & conditions apply.