Green Plains Renewable Energy Inc. (GPRE) engages in the construction and operation of dry-mill, fuel-grade ethanol production facilities in the United States. Trading on NASDAQ as part of the Specialty Chemicals industry in the Basic Materials sector, the company has their corporate headquarters in Omaha, Nebraska. They are working towards their goal of becoming a vertically integrated, low-cost ethanol producer.

The company operates two plants in Iowa. These two have a combined operating capacity of 110 million gallons of ethanol per year. The processing of corn and/or other biomass produces ethanol. Green Plains is operating one ethanol plant, located in Shenandoah, Iowa. This Shenandoah Plant started producing ethanol on August 23, 2007. They also have another plant in northwestern Iowa near the town of Superior.

Green Plains Renewable Energy also has plans to build other plants at other sites. Their corporate strategy is to further expand their Shenandoah and Superior sites