GREET Model Overview
Greenhouse gases,
Regulated
Emissions, and
Energy use in
Transportation
The GREET model is designed to break down the full life-cycle of vehicles. Sponsored by the Argonne National Laboratory (ANL), it shows the environmental impacts of vehicles from creation, to use, to destruction. The GREET model generates figures of the amounts of energy used and emissions created in order to better the future of vehicle usage and their production. Through either the use of multidimensional spreadsheets or the ANL’s software, one can see the emissions of the three standard greenhouse gases: CO2, CH4, and N20.
The GREET program itself is organized into a variety of tabs (See Figure 1) that indicate statistics about types of fuel (eg. petroleum, natural gas, electric, etc.), types of vehicles (passenger cars, light and medium duty trucks), and types of vehicle technologies (spark-ignition, direct-injection, hybrid electric, etc.).
ANL commonly refers to their examination of vehicles as a well-to-wheel model; a vehicle’s LCA, or Life Cycle Assessment, shows a vehicle’s environmental impact from the creation of its parts, to the end of its life. Their fuel pathways are also analyzed. Fuel pathways are the processes that make up the life of a type of fuel, including the production of the fuel and its use. Through the exploration of various fuel pathways and vehicle technologies, ANL hopes to lessen environmental impacts from vehicles both in the present, and in the future.
Figure 1: An Example of the GREET User Interface
Argonne National Laboratory:
https://greet.es.anl.gov
An Explanation of GREET
An Introduction to Using GREET
https://www.youtube.com/watch?v=ajbfdnrCWuk&list=PLLT1SPoEVQqxWRoFTABWU_ibyLSpS18pO&index=3
Argonne's Michael Wang Discussing GREET
https://www.youtube.com/watch?v=92U9PqeiJIA
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