The Suitability Mapper is a mapping tool that allows users to identify suitable areas for infrastructure development based on customized queries. For example, a planner might be interested in developing a solar project in an area but also avoiding building the solar project in an area of high biodiversity. The Mapper’s data are derived from publicly available online sources and have been cleaned and transformed to meet the needs of the suitability widget. Through this tool, the Stimson Center hopes to improve access to GIS research and data transparency, provide analytical components to further strengthen ESG standards, and mitigate future project risks.