This is Argonne National Laboratory’s R&D version of GREET.
For versions of GREET used for determining tax credits, please click here.
For versions of GREET used for determining tax credits, please click here.
Publication Details
Title : FEEDSTOCK CARBON INTENSITY CALCULATOR (FD-CIC) - Users’ Manual and Technical DocumentationPublication Date : October 11, 2022
Authors : X. Liu, H. Kwon, M. Wang
Abstract : A transparent and easy-to-use tool for feedstock-specific, farm-level CI calculation of feedstocks is especially helpful. With the ARPA-E support, we have developed a tool - the Feedstock Carbon Intensity Calculator (FD-CIC). The first version of FD-CIC was released with the GREET® model in 2020 so that corn feedstock producers can use this publicly available tool to quantify corn grain CIs with farm-level input data and management practices. In the 2021 version, we expanded the tool’s capabilities by including additional feedstocks such as soybeans, sorghum, and rice. Similar to corn, it calculates the farm-level CI for these feedstocks by allowing user-defined farm-level farming inputs and incorporating the GHG emission intensities of these inputs from GREET (in particular, GREET1, the fuel cycle model of GREET). In the 2022 version, we include the CI calculation of important international feedstocks such as Canadian corn and Brazilian sugarcane. Currently, dynamic and standalone versions of FD-CIC are available. The dynamic version interacts with the GREET model by directly reading the life-cycle inventory (LCI) data of key farming inputs from it. This version suits well when users want to change the GREET default settings that affect the GHG emission intensities of farming inputs. For example, if the users want to assess the impact of using a regional electricity grid mix to produce key farming inputs, instead of the U.S. average grid mix, they can modify the grid mix in the GREET model and utilize the interacting feature in the FD-CIC to re-read the updated CI values for those key farming inputs. The interacting feature also enables the CI values to be updated with the annual GREET release. The standalone version is built for users who are not familiar with the GREET model and contains the GREET default LCI data for key farming inputs.