The Argonne National laboratory has announced the release of the updated GREET fuel cycle model. The GREET model was first released in 1996 and since its release, Argonne has continued to update and improve the model. GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) is sponsored by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE).
The GREET model is a tool designed to fully evaluate energy and emission impacts of advanced vehicle technologies and new transportation fuels, the fuel cycle from wells to wheels It also takes into account the vehicle cycle through material recovery and vehicle disposal.
Key updates include:
- New marine fuel pathways and commercial vessel operations
- New sorghum ethanol pathways
- New Tallow pathway
- Electric power sector technology shares, efficiencies and emission factors by technology and utility regions
- CH4 emissions for natural gas pathways
- Transmission and distribution (T&D) emission factors, energy intensity, mode shares and distances
- Biofuels land use change (LUC) data and new modeling options
- Cellulosic biomass feedstock updates (e.g., farming, T&D, dry matter losses)
- Fertilizers and nutrients use for biofuels pathways
- Petroleum refining efficiency
- Light duty vehicles (LDV) tailpipe emission factors
- Hydrogen production with latest DOE H2A models
- Urban share of criteria air pollutants (CAP) emissions (petroleum, electricity, LDVs)
The GREET model is free to use. Click here to download the updated GREET fuel cycle model.