For Immediate Release U.S. Trade Representative Ron Kirk, Montgomery County Public Schools and SunEdison Commemorate Earth Day by Celebrating the Activation of 8 Solar PV Systems at Montgomery County Public Schools 1.1 MW Solar Program Made Available through a Solar Power Purchase Agreement with SunEdison that Required No Upfront Costs from the School District Silver Spring, MD (April 22, 2010) — Today, U.S. Trade Representative Ron Kirk, Superintendent of Montgomery County Public Schools, Dr. Jerry D. Weast, Board of Education President Patricia O’Neill, and SunEdison, North America’s largest solar energy services provider and a subsidiary of MEMC Electronic Materials (NYSE: WFR), commemorated Earth Day by celebrating the activation of eight photovoltaic power systems totaling 1.1MW of solar capacity at Francis Scott Key Middle School in Silver Spring, Maryland. The solar power systems located on the rooftops of eight Montgomery County Schools were made possible through a solar power purchase agreement that requires no upfront costs from the school district. SunEdison constructed, owns, operates and maintains these systems hosted by the school district. In return, the school system will purchase the energy produced to offset their demand from the grid at or below retail rates for twenty years. Combined, the eight systems will produce over 1.3 million kilowatt hours (kWh) annually and over 25 million kilowatt hours (kWh) over the first 20 years of operation. Montgomery County Public Schools currently hosts more solar photovoltaic (PV) systems than any other school system in the mid-Atlantic region. “The solar energy program is an important way that MCPS can power schools in an efficient and environmentally friendly way,” said Superintendent Dr. Jerry D. Weast. “As we celebrate Earth Day, we also renew our commitment to green energy, recycling and building practices in Montgomery County Public Schools.” SunEdison has implemented solar school programs nationwide, providing affordable solar solutions while helping to educate students on the importance of solar and sustainability. “SunEdison makes solar energy a reality for schools and universities across our nation,” said Brian Jacolick, General Manager, Americas for SunEdison. “Through our strong partnerships, demonstrated track record, and our financing capabilities, SunEdison is able to provide solar solutions to our schools while promoting the importance of solar and sustainability to our students.” The environmental attributes associated with the eight solar arrays will offset over 48 million pounds of CO2 over the 20 years of operation. That is equivalent to removing over 4,800 cars from the road for 1 year. SunEdison Corporate Headquarters 12500 Baltimore Avenue Beltsville, MD 20705 866 SunEdison (786 3347) T +1 443 909 7200 F +1 443 909 7150 info@sunedison.com www.sunedison.com About SunEdison SunEdison is North America’s largest solar energy services provider. The company 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. 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. MEMC has been a pioneer in the design and development of wafer technologies over the past 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. With the acquisition of SunEdison, MEMC is now 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. About MCPS Montgomery County Public Schools is the 16th largest school system in the nation, with nearly 142,000 students from approximately 164 countries. Contacts: SunEdison Brad Oswald Sr. Marketing Communications Manager boswald@sunedison.com Or MEMC Electronic Materials, Inc. Bill Michalek, 636-474-5443 Director, IR & Corporate Communications Montgomery County Public Schools Dana Tofig Director, Public Information Office (301) 279-3853 Twitter: @MCPS United States Trade Representative Nkenge Harmon Deputy Assistant U.S. Trade Representative for Public and Media Affairs Executive Office of the President (202) 395-9496 www.ustr.gov June 28, 2016 Page 2 of 2