Appendix  
Section 45Z Emissions Rate Table 
For Use For Fuel Produced After 12/31/2024 
 
Type of Fuel 	Category of Fuel 	Determination of 
Emissions Rate   
 (calculated to be expressed in kg of 
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 
(UCO) 
 		
		Tallow 		
		U.S. distillers corn oil 
(DCO) 
 		
		U.S. carinata oil 
(intermediate crop) 
 		
		U.S. camelina oil 
(intermediate crop) 
 		
		U.S. pennycress oil 
(intermediate crop) 
 		
Renewable Diesel  

 	Hydroprocessed esters and fatty acids (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 oil/rapeseed oil 
 		
		U.S. UCO 
 		
		Tallow 		
		U.S. DCO 

 

 

 

 	 
 
 	U.S. carinata oil 
(intermediate crop) 
 		
		U.S. camelina oil 
(intermediate crop) 
 		
		U.S. pennycress oil 
(intermediate crop) 
 		
	 ATJ 	Ethanol (from fermentation pathways listed above)  		
	Gasification and 
Fischer-Tropsch 
 	U.S. corn stover 		
Renewable Natural Gas 	Anaerobic 
Digestion and 
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 
(intermediate crop) 		
		U.S. camelina oil 
(intermediate crop)  		
		U.S. pennycress oil 
(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 
Canola/rapeseed oil 		
		U.S. UCO 
 		
		Tallow 		
		U.S. DCO 		
		U.S. carinata oil 
(intermediate crop) 		
		U.S. camelina oil 
(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).  
See the 45ZCF-GREET 
User Manual for additional instructions.   	
Sustainable Aviation 
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 
(intermediate crop) 
 		
		U.S. camelina oil 
(intermediate crop) 
 		
		U.S. pennycress oil 
(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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