The Greenhouse gases, Regulated Emissions and Energy use in Transportation (GREET) full life-cycle model is used to evaluate and compare the environmental impacts of new transportation fuels and advanced vehicle technologies. The rev2 release includes the following updates:

• Added hydrothermal liquefaction of algae;
• Added wastewater sludge-based renewable natural gas;
• Updated sugarcane ethanol pathways;
• Replaced farmed trees farming with willow and popular farming;
• Updated electricity generation mixes, shale gas shares and oil sand shares;
• Added navigation menus to enhance the user experience;
• Added energy functional units to the “Results” worksheet; and
• Adjusted lipid and moisture contents of oil seeds and their impact on oil and co-product yields.

The GREET (Beta) features a new user-friendly platform. The new integrated design is based on the GREET database layered with algorithms and a graphical interface, with the intention of making it a powerful and flexible tool. The new intuitive graphical interface allows the user to create new pathways from the available database using simple drag-and-drop operations.