This project provided technical support to the overall PNNL project to implement performance-based compliance in COMcheck based on EnergyPlus simulations. GARD was responsible for the development of modeling guidelines for generating EnergyPlus proposed building IDF input files from COMcheck data, development of modeling guidelines for generating EnergyPlus code building IDF files from any proposed building IDF file, and advising PNNL about the interoperability with other EnergyPlus and BIM modeling activities, specifically related to code compliance.