(Undated) -- Iowa tops the state's ethanol production record by 100 million gallons.
The state produced more than 4-point-5 billion gallons of the fuel in 2022.
The Iowa Renewable Fuels Association says renewable fuels made up more than 5 billion dollars of Iowa's G-D-P in 2021, nearly 3-percent of the state's G-D-P for the year.