Renew Energy is a privately owned, corn-fed ethanol fuel

Ethanol fuel

Ethanol fuel is ethanol , the same type of alcohol found in alcoholic beverages. It is most often used as a motor fuel, mainly as a biofuel additive for gasoline. World ethanol production for transport fuel tripled between 2000 and 2007 from 17 billion to more than 52 billion litres...

 plant located in Jefferson, Wisconsin

Jefferson, Wisconsin

Jefferson is a city in Jefferson County, Wisconsin, and is its county seat. It is located at the confluence of the Rock and Crawfish Rivers. The population was 7,338 at the 2000 census. The city is located partially within the Town of Jefferson.-History:...

. Renew Energy produces 130 million U.S. gallons (490,000,000 L) of fuel-grade ethanol yearly, making it the state’s largest ethanol plant, along with nearly a dozen high quality by-products ranging from carbon dioxide

Carbon dioxide

Carbon dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom...

 to distillers dried grains.
Renew Energy utilizes the world's largest dry corn fractionation system, capable of processing 1 million bushels (25,000 metric tons) of corn weekly. The plant was designed by Delta-T Corp and uses a high efficiency vacuum distillation

Vacuum distillation

Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is reduced to less than its vapor pressure causing evaporation of the most volatile liquid...

and dryer system.