• Address: 60502 Glacier Road | Atlantic, IA 50022
  • Phone: 712-254-9850

September 2026 Update on 45Z Farm Practices

On September 8, 2026, the United States Department of Energy released an update to the 45CF – GREET model that incorporates the USDA feedstock carbon intensity calculator which completes step #2 as outlined below.

On September 8, 2026, the United States Department of Treasury published additional guidance enabling taxpayers to utilize certain farm practices in altering the carbon intensity of the ethanol produced which completes step #3 below.

Farmers interested in earning additional compensation for corn planted in spring 2025, harvested in fall 2025, and subsequently delivered to our ethanol company throughout the past year should contact Nick Bowdish. There will also be opportunities to earn additional compensation for corn planted in spring 2026, harvested in the fall of 2026, and subsequently delivered to our ethanol company in the year ahead. Our ethanol company intends to work directly with growers to assist them in generating a Biofuel Feedstock Report and does not intend to outsource this task to any third-party companies. Nick can be reached by calling or texting 712-790-0767. We look forward to assisting farmers with compiling the necessary supporting documentation.


On February 3, 2026, the United States Treasury Department released a proposed rulemaking on the 45Z clean fuel production tax credit. The proposed rule outlined three key steps that must occur for corn ethanol producers to alter the carbon intensity of the ethanol produced due to incorporating certain farm practices.

Based on the proposed rulemaking, the steps are as follows:

  • The United States Department of Agriculture must publish the final version of the USDA FD-CIC which is the feedstock carbon intensity calculator. ✓ June 26, 2026.
  • The United States Department of Energy must release an update to the 45CF – GREET model that incorporates the USDA feedstock module. ✓ September 8, 2026.
  • The United States Department of Treasury must publish additional guidance. ✓ September 8, 2026.

To read the proposed rulemaking, please click here.