LCFS Land Use Change Assessment
This page last reviewed May 6, 2016
This page provides information regarding the land use change assessment under the LCFS. In 2009, the Global Trade Analysis Project (GTAP) model was adopted with the original LCFS adoption. In 2011, the Board directed staff to continue working with interested stakeholders to update the indirect land use change (iLUC) carbon intensity values for various biofuels. Staff has been collaborating with stakeholders, and as part of the 2015 LCFS readoption, the GTAP model was updated and the AEZ-EF model was created to supplement GTAP's estimates of greenhouse gas emissions from various types of land conversions. This page provides information about indirect land use change and the models used for the land use change assessment and supporting documentation.
Current Version: GTAP and AEZ-EF Models
- January 2015: GTAP Model used for ARB iLUC Analysis posted on Purdue website
- December 2014: AEZ-EF Model v.52 and input sheet to be used with model
- February 2010: GTAP-SOY: Updated GTAP model customized for Midwest soybeans and supporting document
- February 2009: GTAP model and modeling files: Corn Ethanol and Sugarcane Ethanol
- January 2010: GTAP-SOY customized for Midwest soybeans and supporting documentation
- December 2009: GTAP-SOY: GTAP model customized for Midwest soybeans and supporting document
- February 2009: Biofuel Time - Integrated Model of Emission (BTIME) version 1.1 (by UC Berkeley, UC Davis, and Union of Concerned Scientists) - Modified by California Air Resources Board (used in the indirect LUC calculation of the LCFS Staff Report)
- February 2009: Emission Factor Tables (GTAP, Woods Hole)
- October 2008: RunGTAP version used for the corn ethanol analysis by ARB, UC Berkeley, and Purdue University:
- It will require user to log in and verify that you have a version 6 data base.
- Individuals wishing to access must login separately.
- Useful reference papers for any written work using this model
- To purchase, click here
- The associated data base is available to GTAP database subscribers
- Land Use database
- To download RunGTAP Software (a standard version)
- Importance of by-products
- Peer Review
- Results presented at ARB followed this paper, which will be updated in the coming weeks to reflect by-products
- The land use data base is documented in the following book chapters 2601, 2302, and 2603.
Contact UsIf you have questions regarding the above information, please contact Anil Prabhu via email.
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