Ad-hoc Disclosure - Wacker Chemie AG


Ad-hoc Disclosure

Ad-hoc disclosure of July 20, 2007

Munich/Mainz, Jul 20, 2007

Ad hoc disclosure according to Sec. 15 WpHG (German Securities Trading Act) of July 20, 2007

Wacker Chemie AG / strategic decisions / establishment of joint ventures

WACKER and SCHOTT in talks about joint venture to produce solar wafers

Wacker Chemie AG and SCHOTT Solar GmbH, a subsidiary of SCHOTT AG, intend to set up a joint venture to produce silicon wafers for solar applications. Negotiations are well advanced. The joint venture could start production of multicrystalline silicon ingots and solar wafers, which are a precursor for solar cells, this year. Solar wafer production capacity is targeted to reach about one gigawatt per year by 2012. WACKER and SCHOTT shall each hold a 50 percent equity stake in the joint venture.

Contact

Wacker Chemie AG
Hanns-Seidel-Platz 4
D-81737 München

Mr. Jörg Hoffmann
Tel. +49 89 6279-1633
Fax +49 89 6279-2933

www.wacker.com

Additional Information

ISIN: DE000WCH8881
WKN: WCH888
Deutsche Boerse: WCH
Ticker Bloomberg CHM/WCK.GR
Ticker Reuters CHE/WCHG.DE
Listing: Frankfurt Stock Exchange (Frankfurter Wertpapierbörse), Official Market (Prime Standard)

Disclaimer:

This ad hoc-release contains forward-looking statements based on assumptions and estimates made by the executive boards of WACKER and SCHOTT. Although we assume the expectations in these forward-looking statements are realistic, we cannot guarantee they will prove to be correct. The assumptions may harbor risks and uncertainties that may cause the actual figures to differ considerably from the forward-looking statements. Factors that may cause such discrepancies include, among other things, changes in the economic and business environment, variations in exchange and interest rates, the introduction of competing products, lack of acceptance for new products or services, and changes in corporate strategy. Neither WACKER nor SCHOTT plan to update the forward-looking statements, nor assume the obligation to do so.