|MEMC Electronic Materials, Inc. is engaged in the development, manufacture and sale of silicon wafers. The Company is a developer and seller of photovoltaic energy solutions. Through Solar Materials and Solar Energy (SunEdison), it is a developer of solar energy projects. The Company operates in two segments: semiconductor materials and solar energy. The Company's Solar Energy segment includes the operations of its old Solar Materials segment, as well as its SunEdison business. In the Semiconductor Materials segment, the Company offers wafers with a variety of features. The Company's wafers vary in size, surface features, composition, purity levels, crystal properties and electrical properties.