MEMC to Webcast Capital Markets Day on May 11, 2011

ST. PETERS, Mo., May 9, 2011 /PRNewswire/ -- MEMC Electronic Materials, Inc. (NYSE: WFR) today announced that it will provide a live webcast for its Capital Markets Day beginning at 9:00 a.m. Eastern Time, Wednesday, May 11, 2011. The Capital Markets Day event will include a series of presentations by the company's executive team and is scheduled to conclude at approximately 12 p.m. Eastern Time.

Interested parties are invited to listen to the webcast on the Company's web site at www.memc.com. The event will be recorded and available for replay until June 10, 2011.

About MEMC

MEMC is a global leader in semiconductor and solar technology. MEMC has been a pioneer in the design and development of silicon wafer technologies for over 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. Through its SunEdison subsidiary, MEMC is also a developer of solar power projects and a worldwide leader in solar energy services.

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 www.memc.com.

SOURCE MEMC Electronic Materials, Inc.