This highly detailed geospatial application was developed by the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL). It allows users to easily and accurately map potential renewable energy resources in the United States. The interactive tool, RE Atlas, is free to use and available online at http://maps.nrel.gov/re_atlas. RE Atlas is an important addition to NREL’s suite of geospatial tools because it brings together so many renewable energy datasets in one easy-to-use tool.” RE Atlas is designed to facilitate energy policy development, investment, and education by making high quality data accessible and easy to understand. The tool creates dynamic maps of renewable resources, including biomass, geothermal, hydropower, solar, and wind. RE Atlas can display resources individually or in a composite fashion.