Argonne National Laboratory has been developing the Greenhouse gasses, Regulated Emissions, and Energy in Technologies (GREET) life cycle analysis model for almost 30 years. The team’s goal is to rebuild the GREET model with a more flexible and scalable programming backend to support a user-friendly interface, improve the robustness and efficiency of the life cycle analysis process involving user data input, processing, and modeling, and to expand the modeling functionality with enhanced user accessibility.