MEMC Receives Supplier Excellence Award From TSMC

              MEMC Receives Supplier Excellence Award From TSMC

PR Newswire

ST. PETERS, Mo., Dec. 17, 2012

ST. PETERS, Mo., Dec.17, 2012 /PRNewswire/ --MEMC Electronic Materials, Inc.
(NYSE: WFR) announced today that it has received the Supplier Excellence Award
from TSMC for 'outstanding overall performance' in 2012. The award was
presented to MEMC by TSMC's Co-Chief Operating Officer, Dr. Shang-yi Chiang at
a ceremony in Taiwan on December 14, 2012.

Shaker Sadasivam, President of Semiconductor Materials for MEMC, said, "We are
honored to be recognized by TSMC as a Supplier of Excellence. We place
enormous value on our relationship with TSMC and are committed to providing
customer partners like them with top-quality products and unrivaled service
and support each and every day. This award is an excellent acknowledgment of
the dedication and hard work of the MEMC team around the world."

This marks the second time in three years that MEMC has been recognized by
TSMC with this award.

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." For more information about MEMC, please visit www.memc.com.

SOURCE MEMC Electronic Materials, Inc.

Website: http://www.memc.com
Contact: Media, Bill Michalek, Director, Corporate Communications,
+1-636-474-5443, or Investors/Analysts, Chris Chaney, Director, Investor
Relations, +1-636-474-5226