On May 24, 2016, Iowan Governor Terry Branstad signed Senate File 2309, an Act providing for tax credits and refunds relating to renewable fuels including their component biofuels and including effective date provisions. The bill extends a state biodiesel production tax credit providing 2 cents per gallon (cpg) on the first 25 million gallons of production per biodiesel plant. The bill also extends a credit for petroleum retailers of 4.5 cpg on blends of 5 percent biodiesel or more through the end of 2017, with the incentive changing to 3.5 cpg for 5-11 percent biodiesel blends and 5.5 cpg for biodiesel blends above 11 percent from 2018 to 2024. Without the extension, the bill was scheduled to sunset on December 31, 2017, but will now continue through December 31, 2024.