This 250W solar panel is ideal to be used on the roofs of homes & small businesses & will generate electricity even when it's cloudy. Each solar cell is 125mm x 125mm for a compact panel which is designed to power your home. Solar panels utilise the power of the sun, allowing you to take advantage of a renewable source of electricity which is kind to the environment. Solar PV is also an eligible technology under the Government's Feed-In Tariff scheme, meaning you can make a return on your investment & potentially profit from any surplus energy you export to the power grid. The rated voltage for this product is 250W. All Trueshopping solar PV panels are MCS Accredited & come with a 25 Year Limited Warranty.