SunEdison Receives Final Milestone Payment for Rovigo Solar Power Plant


BELTSVILLE, Md., Dec. 27, 2010 - SunEdison, a leading worldwide solar energy services provider and a subsidiary of MEMC Electronic Materials (NYSE: WFR), announced today that it has received the final milestone payment of 230 million Euros from First Reserve for the sale of a 70 megawatt (MW) photovoltaic (PV) power plant located in Northeast Italy, near the town of Rovigo.

As previously announced, the Rovigo solar power plant was acquired by First Reserve for approximately 276 million Euros, through a joint venture established between First Reserve and SunEdison. In October 2010, First Reserve made an initial milestone payment of 46 million Euros to SunEdison and on December 23, 2010 funded the final 230 million Euro milestone payment.

"The development and sale of the Rovigo power plant was a major achievement and defining moment for SunEdison in 2010," stated Carlos Domenech, President of SunEdison. "In less than ten months, we designed and developed one of the largest single operating solar power plants in Europe. In addition, we worked with project investors to develop the finance structures needed, reached out to local government agencies to understand their renewable energy goals and job creation needs, and brought the right people and technologies together to make this project a reality. The Rovigo project is a testament to the strength, experience and the talent that SunEdison offers."

The Rovigo solar plant is expected to create significant environmental benefits in addition to the construction and maintenance jobs that benefit the local community. In its first year of operation, the system is expected to generate enough energy to power approximately 16,500 homes and prevent the emission of 40,000 tons of CO2, which would equate to the removal of 8,000 cars from the road. SunEdison will manage the ongoing operations and maintenance of the 70MW power plant.

About SunEdison

SunEdison is a global provider of solar-energy services. The company develops, finances, installs and operates distributed power plants using proven photovoltaic technologies, delivering fully managed, predictably priced solar energy services for its commercial, government and utility customers. In 2009, SunEdison delivered more kilowatt hours (kWh) of energy than any other solar services provider in North America. For more information about SunEdison, please visit www.sunedison.com.

About MEMC

MEMC is a global leader in the manufacture and sale of wafers and related intermediate products to the semiconductor and solar industries. The company 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. Through its SunEdison division, MEMC is also a developer of solar power projects and North America's largest solar energy services provider. 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.

Contacts:
Media:
Brad Oswald
Sr. Marketing Communications Manager
SunEdison
(443) 909-7200

Bill Michalek
Director, Corporate Communications
MEMC Electronic Materials, Inc.
(636) 474-5443

Investors/Analysts:
Kurt Bruenning
Treasurer
MEMC Electronic Materials, Inc.
(636) 474-5925

SOURCE SunEdison

Web Site: www.sunedison.com

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