DOE releases 45ZCF-GREET model for use with 45Z clean fuel production credit
January 16, 2025
BY U.S. Department of Energy
Today, the U.S. Department of Energy released the 45ZCF-GREET model. This announcement follows the U.S. Department of the Treasury and Internal Revenue Service guidance on the Clean Fuels Production Credit (section 45Z) released on Jan. 10, 2025.
The Clean Fuels Production Credit provides a tax credit for the production of transportation fuels with life cycle greenhouse gas (GHG) emissions below certain levels. The credit applies to eligible transportation fuel produced domestically after Dec. 31, 2024, that is sold by Dec. 31, 2027.
45ZCF-GREET includes feedstock-specific fuel production pathways for sustainable aviation fuels (SAF) and non-SAF fuels. The model is designed specifically to evaluate life cycle GHG emissions to meet the requirements of section 45Z and to include features that make it easy to use for taxpayers.
DOE also released the 45ZCF-GREET User Manual which describes how the 45ZCF-GREET model characterizes life cycle GHG emissions of transportation fuel production pathways and provides guidance for using the model to determine emissions rates for clean fuels under section 45Z.
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The 45ZCF-GREET model and user manual are available on the DOE GREET webpage.
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