Golden Grain Energy, LLC engages in production and sale of ethanol, distiller grains, and corn oil in the continental United States. The company offers ethanol primarily to petroleum terminals; modified/wet distiller grains and distillers dried grains with solubles for the dairy and beef industries; and corn oil for animal feeds, industrial uses, and biodiesel production. It also involves in the investment activities that focuses on production, marketing, and logistics of ethanol. The company was founded in 2002 and is based in Mason City, Iowa.