The Earth receives more energy from the sun in just one hour than is used by humans worldwide in a whole year. This energy is free and readily accessible – even in the UK. Photovoltaic cells convert daylight into electricity, reducing the need to exploit fossil fuels and thereby reducing the impact we have on the environment. 

The word ‘photovoltaic’ comes from combining two different words; the Greek word ‘photos’ meaning light and the word ‘voltaic’ which is a development of the name of the Italian scientist, Volta, who studied electricity.

Originally stemming from the space industry the first practical application of simple photovoltaic (PV) systems was to power calculators and wrist watches. More complicated systems have developed to provide electricity for pumping water, powering communications equipment, and even lighting homes and running appliances. In many cases, particularly in third world countries or locations off the main electricity grid supply, PV power is the cheapest form of electricity for performing these tasks.

Further information on Photovoltaics is available in the form of factsheets from the EST and Action Renewables. These can be downloaded below.