Mapping Themes
Themes are a convenient way to quickly load multiple layers related to a particular technology or resource without having to manually browse and add layers to the map.
Geospatial Energy Mapper (GEM)
A comprehensive online mapping tool that helps to identify areas that are suitable for power generation and other energy-related projects
GEM provides mapping data and analysis tools for planning energy infrastructure in a geographic context
GEM is an interactive web-based decision support system that allows users to locate areas with high suitability for power generation and potential energy transmission corridors in the United States. Explore energy data on the map, browse and download data layers, generate dynamic reports on a variety of topics, or create a custom suitability model to identify areas for energy development.
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Videos
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News
Reporting Tool Released
2025-06-30
Analyze an area has been added to the GEM tools panel. This tool generates location-specific reports on a variety of topics for user-specified areas.
Layer Catalog
GEM offers an extensive catalog of mapping data for energy planning, including energy resources and infrastructure, and other information that may influence siting of energy infrastructure.
Reporting
Reports on a wide variety of topics can be generated for user-specified areas.
Modeling
Interactive, flexible suitability models help identify areas meeting a set of technology-specific siting criteria.
About the Project
Geospatial Energy Mapper (GEM) is a next-generation modeling tool built on the core data and capabilities of the Energy Zones Mapping Tool (EZMT). GEM features an improved user interface, updated data, and additional capabilities. Argonne National Laboratory hosts the tool with funding from the U.S. Department of Energy (DOE) Office of Electricity.
