SunEdison, Inc. (SunEdison) is a developer and seller of photovoltaic energy solutions. The Company is in the development, manufacture and sale of silicon wafers to the semiconductor industry. SunEdison is a developer of solar energy. The Company operates in three segments: Solar energy, Semiconductor Materials and TerraForm Power. The Solar Energy business provides solar energy services that integrate the design, installation, financing, monitoring, operations and maintenance portions of the downstream solar market for customers. The Solar Energy business also manufactures polysilicon, silicon wafers and solar modules to support its downstream solar business. Semiconductor Materials business includes the development, production and marketing of semiconductor silicon wafers ranging from 100 millimeter (4 inch) to 300 millimeter (12 inch) as the base material for the production of semiconductor devices. TheTerraForm Power segment owns and operates clean power generation assets.