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Iowa Biodiesel

Iowa’s 10 operating biodiesel plants produced an estimated 350 million gallons in 2024, according to a study by Decision Innovation Solutions. Iowa is the top biodiesel-producing state. As a heartland state, many of the state’s plants use soybean oil – an abundant local resource – to make biodiesel, but other renewable agricultural co-products and byproducts are also used, such as beef tallow, inedible corn oil and recycled cooking grease.