Siouxland Energy and Livestock Cooperative (SELC) has completed a major expansion of its ethanol plant in Sioux City, increasing production capacity of the corn-based fuel to 60 million gallons annually.

The larger plant can now process more than 20 million bushels of corn. In addition to 60 million gallons of ethanol, the factory produces 400,000 tons of wet distiller’s grains and 140,000 tons of condensed distiller’s solubles (syrup) annually.

The plant, Iowa’s oldest operating farmer-owned ethanol plant, had an annual capacity of 25 million gallons when it opened in 2001.