Solar electric (photovoltaic or 'PV') panels produce electricity directly from sunlight, the Earth's primary source of energy. Despite its rainy climate the UK would get 2/3 of its electricity from solar if all suitable roofs were equipped with solar panels i . Even on overcast days there is enough diffuse daylight for solar electric panels to generate some electricity.
If it were possible to harness all the sunlight that hits the UK in one average day it would be enough to fulfil the whole of the UK's electricity needs for 2 whole years ii .
