Resources for the Future (RFF) plays a central role in producing independent energy and environmental economics research, largely due to the contributions of the many energy and environmental microeconomic simulation models the organization maintains. These workhorse models allow researchers to examine many aspects of energy systems, with models feeding into numerous academic publications, policy reports, and energy and environmental decision-making processes. This grant supports efforts by RFF to update and enhance the usefulness of its modeling platforms by producing additional modules, increasing granularity, and creating linkages between them.  The models to be augmented include the Dynamic Regional-General Equilibrium Model (known as DR-GEM); the Engineering, Economic, and Environmental Electricity Simulation Tool; and RFF platforms that model employment, the electricity market, and the vehicle market. Planned improvements include adding more detailed information on the interactions between different industrial sectors; better information about solar, wind, and other renewables; detailed data on how new and used car sales vary across states, and up-to-date projections about the likely phase out of U.S. coal plants. In addition, the RFF team will develop a new land-use carbon model that will look at the land-use implications and likelihood of land-use change associated with various energy development and policies, such as those related to biofuels, biomass with carbon capture and storage, and offset programs that may be used to compensate for hard-to-decarbonize emissions.