Submitted by Energy Answers Blog

Biogas (mainly methane) from a landfill will be used in place of natural gas as the process fuel used to turn corn and grain sorghum into ethanol. This should improve the energy balance of the ethanol produced and the city will receive a royalty.
The Robesonian > St Pauls Review > News > Ethanol plant permitted: “The plant will partner with Robeson County on the site. Robeson County, which signed a 15-year deal with Solv-It Technologies in February, 2007, will install a $1.1 million methane gas collection system to power the plant. The methane will be collected from the landfill.”