Wisconsin’s Department of Agriculture, Trade and Consumer Protection has offered a $29,000 grant to a researcher in Stratford, Wis., to develop the technology needed to convert whey sugar into ethanol. State officials say if the process works, the potential exists for as many as three refineries to be built that would produce between 4 million and 7 million gallons of ethanol annually. The grant is part of a $5-million fund being used to study alternative energy sources in Wisconsin.