ST. PETERS, Mo., Dec. 21 /PRNewswire-FirstCall/ -- MEMC Electronic Materials, Inc. (NYSE:WFR), a leading provider of silicon wafers and North America's largest solar energy services provider, has taken an ownership interest in Eversol Corporation, a solar wafer manufacturer in Taiwan. In connection with the contract amendment between MEMC and Gintech Energy dated September 22, 2009, MEMC purchased Gintech's 8.36% interest in Eversol at Gintech's original cost. In a subsequent transaction, as part of a recent capital raise by Eversol, MEMC invested $5.0 million for an additional 5.1 million shares, bringing MEMC's ownership stake in Eversol to approximately 10.6%. "We are pleased to strengthen our strategic partnership with Eversol," commented Ken Hannah, President of MEMC Solar Materials. "In addition to our plans to bring solar wafer manufacturing capability in-house, MEMC is identifying strategic partners for solar wafer manufacturing. With a mix of internal and external solar wafering capacity, we can minimize fixed costs and maintain the flexibility to satisfy growing levels of demand. As we implement this manufacturing strategy, we will continue to identify world-class strategic partners, such as Eversol." Eversol's Chairman and CEO, Calvin Ho, said, "We welcome MEMC as a major shareholder. Having access to MEMC's worldwide supply chain and engineering systems will help us further reduce wafer manufacturing costs, which will spur additional demand for solar projects. MEMC's deep expertise with silicon wafers will also help us to improve solar-cell efficiency and manufacturing yields. Eversol looks forward to working with MEMC engineers in jointly advancing solar wafer technology." About MEMC MEMC is a global leader in the manufacture and sale of wafers and related intermediate products to the semiconductor and solar industries. With the recent acquisition of SunEdison, MEMC is also a developer of solar power projects and North America's largest solar energy services provider. MEMC has been a pioneer in the design and development of silicon wafer technologies for 50 years. With R&D and manufacturing facilities in the U.S., Europe and Asia, MEMC enables the next generation of high performance semiconductor devices and solar cells. MEMC's common stock is listed on the New York Stock Exchange under the symbol "WFR" and is included in the S&P 500 Index. For more information about MEMC, please visit http://www.memc.com/. DATASOURCE: MEMC Electronic Materials, Inc. CONTACT: Bill Michalek, Director, IR & Corporate Communications, MEMC Electronic Materials, Inc., +1-636-474-5443 Web Site: http://www.memc.com/

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