The plant, in Hankinson, southeastern North Dakota, has production capacity of 378 million litres a year.

It began operation in July 2008, but was 'idled' three months later, several weeks before VeraSun filed for bankruptcy protection. AgStar Financial Services, based in Minnesota, brought together a group of lenders that took over some of VeraSun's ethanol refineries, including the one in Hankinson.

"Given