A Dallas company plans to built three new ethanol plants in Iowa that could produce up to 300 million gallons of fuel a year.

According to the Des Moines Register, Harvest BioFuels LLC is scheduled to begin construction of a plant near Galbraith in eastern Kossuth County in April, with onstruction of plants near Garner in Hancock County and near Gilmore City in Pocahontas County to begin later this year.

Iowa is already the top ethanol producing state in the country with 25 ethanol plants producing 1.7 billion gallons a year. Twenty-one more plants are either under construction or being expanded.