Renewable energy sources are expected cover more than half of the world's energy demand by mid of this century and solar energy is likely to be a key contributor.According to the European photovolatic industries  as sociation ,the market for solar energy will grow an average of 45% per year between 2007 and 2013.keeping pace with this growth is a big chalenge,especially for the supply sector lenge.especially for the supply sector and polysilicon manufacturers,said dr.Wolfgang Storm,senior marketing manager,wacker polysilicon "wacker willl support the photovolatic industry through innovations expansion of its production capacities,''he added.

Polycrystalline silicon is the key raw material for solar cells,which transform sunlights directly into ecologically friendly,co2 -netural electrical energy.solar cell made of monoor multicrysalline silicon represent by far the most important technology,despite alternatives such as thin -film or amorhous silicon cells.Wacker is one of the world's leading manufacturers of hyperpure photovolatic (pv) silicon.Each metric ton of polysilicon used in solar modules prevents the emission of some 6ooo tons of co2,according to wacker.The company's silicones also find a wide range of applications within the PV value chain,Produce polysilicon.As solar pannel Ef-ficiency is very much dependent uponn the quality of the polysilicon,wacker manufacturers and delivrrs only hyperpure polysilicon.