Appendix  
Section 45Z Emissions Rate Table 
For Use For Fuel Produced After 12/31/2024 
 
Type of Fuel 	Category of Fuel 	Determination of <line.break>Emissions Rate   <line.break> (calculated to be expressed in kg of <line.break>CO2e/mmBTU) 	
	 Pathway 	 Primary feedstock 		
Ethanol 	Fermentation 	U.S. corn starch 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S. sorghum grain 		
		Brazilian sugarcane (for use as feedstock for SAFAlcohol-to-Jet (ATJ) only) 		
	Hydrolysis and Fermentation 	U.S. corn stover		
Biodiesel 	Transesterification 	U.S. soybean oil 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S./Canadian canola oil/rapeseed oil 		
		U.S. used cooking oil <line.break>(UCO)		
		Tallow 		
		U.S. distillers corn oil <line.break>(DCO)		
		U.S. carinata oil <line.break>(intermediate crop) 		
		U.S. camelina oil <line.break>(intermediate crop)		
		U.S. pennycress oil <line.break>(intermediate crop)		
Renewable Diesel	Hydroprocessed esters and fatty acids (HEFA)	U.S. soybean oil <line.break> 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S./Canadian canola oil/rapeseed oil 		
		U.S. UCO 		
		Tallow 		
		U.S. DCO		

 

 

 

 
 	U.S. carinata oil <line.break>
(intermediate crop) 
 		
		U.S. camelina oil <line.break>
(intermediate crop) 
 		
		U.S. pennycress oil <line.break>
(intermediate crop) 
 		
	 ATJ 	Ethanol (from fermentation pathways listed above)  		
	Gasification and <line.break>
Fischer-Tropsch 
 	U.S. corn stover 		
Renewable Natural Gas 	Anaerobic <line.break>
Digestion and 
<line.break> Biogas Upgrading 	U.S. wastewater sludge 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S. animal manures  		
		U.S. landfill gas 		
Propane 

 

 	HEFA 

 

 	U.S. soybean oil 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S./Canadian canola/rapeseed oil 		
		U.S. UCO 
 		
		Tallow 		
		U.S. DCO 		
		U.S. carinata oil <line.break>
(intermediate crop) 		
		U.S. camelina oil <line.break>
(intermediate crop)  		
		U.S. pennycress oil <line.break>
(intermediate crop) 
 		
Naphtha 

 

 	HEFA 

 

 	U.S. soybean oil 	Calculate using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). 	
		U.S. /Canadian <line.break>
Canola/rapeseed oil 		
		U.S. UCO 
 		
		Tallow 		
		U.S. DCO 		
		U.S. carinata oil <line.break>
(intermediate crop) 		
		U.S. camelina oil <line.break>
(intermediate crop)  		
		U.S. pennycress oil (intermediate crop) 		
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Hydrogen 	Various, as defined in the user manual for 
the most recent 
45VH2-GREET 
model*  	Various, as defined in the user manual for the most recent 45VH2-GREET model  	Calculate well-to-gate emissions using the most recent determinations under the 45VH2-GREET model; then calculate the full well-to-wheel emissions using the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice). <line.break>  
See the 45ZCF-GREET 
User Manual for additional instructions.   	
Sustainable Aviation <line.break>
Fuel (SAF) 

 

 

 

 

 	HEFA 

 

 
 
 	U.S. soybean oil 
 	Calculate using one of the following:  1) the most recent determinations under the 45ZCF-GREET model (see section 4.01 of this notice) or 2) the most recent version of CORSIA Default or CORSIA Actual (see section 4.02 of this notice).  

		U.S./Canadian canola/rapeseed oil 		
		U.S. UCO 
 		
		Tallow 		
		U.S. DCO 
 		
		U.S. carinata oil <line.break>
(intermediate crop) 
 		
		U.S. camelina oil <line.break>
(intermediate crop) 
 		
		U.S. pennycress oil <line.break>
(intermediate crop) 
 		
	ATJ 	Ethanol (from fermentation pathways above)  
 		
	Gasification and Fischer-Tropsch 	U.S. corn stover 		
	Any pathway established in 
CORSIA Default 
or CORSIA Actual 
for a transportation fuel that is SAF that is not represented above. 	Any feedstock for a pathway established in CORSIA Default or CORSIA Actual for a transportation fuel that is SAF that is not represented above.  	Calculate using the most recent version of CORSIA Default or CORSIA Actual (see section 4.02 of this notice). 	
 
*The 45VH2-GREET model and the 45VH2-GREET User Manual are both available at https://www.energy.gov/eere/greet. 
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