Imerys Roofing, based in France, has developed solar roofing panels that fulfil the complete roofing function. Unlike most existing photovoltaic panels, the Imerys product functions as a roof cover, is distributed through the standard building materials channels, and has to be installed by clay roofing tile fitters. The tile is covered with photoelectric cells and replaces five conventional roofing tiles. It is supplied in 20-module kits. The company plans to produce 300 individual house roofs under a partnership programme established with the European Commission.