Rentech, Inc. (Rentech) is a provider of clean energy solutions. The Company owns and operates a nitrogen fertilizer plant in East Dubuque, Illinois, that manufactures and sells natural gas-based nitrogen fertilizer products within the corn-belt region in the United States. It is developing energy projects to produce certified synthetic fuels and electric power from carbon-containing materials, such as biomass, waste and fossil resources. Its technologies can produce synthesis gas (syngas) from biomass and waste materials, and convert syngas from its own or other gasification technologies into complex hydrocarbons (the Rentech Process) that are then upgraded into fuels using refining technology that it licenses. In addition to developing projects using these technologies, it is pursuing the licensing of its technologies to developers of projects that are expected to produce fuels and/or power. In May 2011, it acquired majority interest in ClearFuels Technology Inc.