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LCA Models and Documentation

This page last reviewed January 3, 2020

Fuel pathways fall into one of three classifications: Lookup Table, Tier 1 and Tier 2.  This page provides the modeling tools and accompanying documentation.

CA-GREET3.0 Model and Tier 1 Simplified CI Calculators

The amendments to the LCFS regulation the Board adopted at its September 2018 hearing replace CA-GREET 2.0 with the CA-GREET3.0 model and Tier 1 Simplified CI Calculators for LCFS fuel life cycle analysis.  The CA-GREET3.0 model is used to generate the CIs of all fuel pathways, including Lookup Table pathways and applicant-specific Tier 1 and Tier 2 pathways. 

August 13, 2018 release of CA-GREET3.0 model and Tier 1 Simplified CI Calculators* (Effective January 4, 2019)

*Minor changes to models posted on August 13, 2018 are documented in the second LCFS errata.

CA-GREET3.0 Supplemental Document and Tables of Changes.pdf The CA-GREET3.0 model was developed from GREET1 2016 developed at Argonne National Laboratory.  Argonne’s currently supported GREET versions are available on its website.  The changes staff made in converting GREET1 2016 into CA-GREET3.0 are documented in this document.

Lookup Table Pathways pdf (Table 7-1)

CA-GREET3.0 Lookup Table Technical Support Documentation pdf Describes the calculations, assumptions, and conditions for using the Lookup Table pathways developed by CARB using CA-GREET3.0.  The CI of Lookup Table pathways for California Average Grid Electricity used in Transportation and the Smart Charging/Smart Electrolysis pathways are subject to annual updates, pursuant to section 95488.5(d).  For the 2019 CIs of these electricity pathways, refer to the certified pathways table page and the technical documentation.

Temporary Pathways Table pdf (Table 8)

Temporary pathways certified pursuant to section 95488.9(b)(4) of the LCFS regulation:

Previous Life Cycle Analysis Models 

September 29, 2015 release (in use from January 2016 to December 2018): 


Contact Us

If you have general questions regarding the information posted to this site, please contact Mr. Anil Prabhu, Manager, Fuels Evaluation Section; for more technical, CA-GREET-specific questions, please contact Mr. Chan Pham, Air Resources Engineer.

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