Dusseldorf & Erfurt, Germany [RenewableEnergyAccess.com] Dusseldorf-based Degussa GmbH, and Erfurt-based PV Silicon Forschungs- und Produktions AG have signed a ten-year agreement for the supply of chlorosilanes, a raw material used in the production of polysilicon.PV Silicon is building a production plant for photovoltaic (PV) silicon for manufacturing polycrystalline wafers for solar cells in Bitterfeld Chemical Park, one of Europe’s large chemical sites. Now Degussa, producer of ultrapure chlorosilanes, will supply the new production plant with Siridion chlorosilanes. “Limited stocks of fossil energy sources have led us to focus increasingly on alternative sources of energy,” said Dr. Klaus Engel, chairman of the Management Board of Degussa GmbH. “And one of the most attractive growth markets for us is photovoltaic. Here we’re consistently stepping up our commitment.” The PV Silicon plant will come onstream in 2009 and have a capacity of 1,800 metric tons per year. The capacity could be tripled if required, depending on market developments. The so-called fence-to-fence production with Degussa at the Bitterfeld site simplifies the supply and handling of chlorosilanes and the byproducts obtained in the process.