News
Alaska, Hawaii, and Puerto Rico Regions Released
2026-05-31
GEM now has an option for CONUS, Alaska, Hawaii, or Puerto Rico views, each with focused themes, mapping libraries, and suitability modeling. Use the region control at the top of the map display to open another region in a new tab.
Webinar: New Capabilities and Content in GEM
2026-02-17
A recording of the February 6, 2026 webinar is now available. It provides an in-depth demonstration of GEM’s latest capabilities and content updates.
Comprehensive Model Updates
2026-02-02
Following our updates to many model input layers, all the GEM model configurations and pre-computed outputs have been updated. They can be accessed through the Find suitable areas panel, or in the Model Output section of the Layer Catalog which includes a download option.
Alternative Fuel Vehicles Report
2026-02-01
A new report topic, Alternative Fuel Vehicles, has been added to GEM. This report provides insights into the distribution and availability of alternative fuel vehicles to support energy planning.
New Report Topics
2026-01-19
We've recently added these new report topics:
- Fish, Wildlife and Vegetation
- Geological Resources and Hazards
- Hazard Risk
- Land and Demographics
- Natural Gas
- Storage
Training Videos Added
2026-01-14
The following training videos were added to GEM’s YouTube channel:
- Graphic Overlay in GEM – How to upload and visualize your own GIS files in GEM.
- Reporting in GEM - How to generate detailed reports in GEM.
- Exploring the Layer Catalog in GEM - How to access, filter, and manage GEM mapping layers using the Layer Catalog.
Report Descriptions and Updated Composite Habitat Layer
2025-11-01
Descriptions of each report have been added to GEM and can be viewed by hovering over a report in the dropdown menu. Report parameters are now displayed in the header of individual reports.
Additionally, the composite habitat layer has been updated to improve the accuracy and coverage of habitat-related data.
Input Lat/Long Coordinates for Corridors
2025-10-01
GEM now supports inputting latitude and longitude coordinates for corridor generation. This feature provides a means of specifying precise starting and ending points for corridor analysis.
Generate a Corridor released
2025-09-22
"Generate a corridor" has been added to the left panel in GEM. This tool prompts for one of three initial models (or strategies) for traversing the
landscape, and to designate the starting and ending points on the map. Clicking "Generate Corridor" launches a batch process to generate the
most suitable path between the points based on the chosen model, adds it to the map, and to the list of corridors at the lower right where it can be
downloaded or used for reports. More options for reviewing and revising the input models are planned.
landscape, and to designate the starting and ending points on the map. Clicking "Generate Corridor" launches a batch process to generate the
most suitable path between the points based on the chosen model, adds it to the map, and to the list of corridors at the lower right where it can be
downloaded or used for reports. More options for reviewing and revising the input models are planned.
New Features Released
2025-08-22
Several new features have been released, including:
- Tabs in the lower right panel to manage your analysis areas, corridors, and models.
- Analysis areas and corridors: Sketch on map, import from GIS files, export to GIS files, assign colors, add to map, delete.
- Models: Add to map, download, generate a revised model, delete.
- A new Storage mapping theme featuring U.S. facilities from the Global Energy Storage Database
- New report topics. The choices now include:
- Brownfield Sites
- Cultural Resources
- Electric Vehicles
- Electrical Transmission
- Jurisdictions
- Power Plants
- Protected Areas
- Storage
- Transportation
Webinar Recording: What's New in GEM?
2025-07-30
A recording of the July 24 webinar, "What's New in GEM?" is available at https://www.youtube.com/watch?v=aUQa6JeuMnk.
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.
Potential Corridors Added
2024-12-16
A new Potential NIETCs map theme, and a new Phase 3 Potential National Interest Electrical Transmission Corridors mapping layer has been added to GEM.
See https://www.energy.gov/gdo/national-interest-electric-transmission-corridor-designation-process for more information.
Questions and comments can be submitted to [email protected].
See https://www.energy.gov/gdo/national-interest-electric-transmission-corridor-designation-process for more information.
Questions and comments can be submitted to [email protected].
New Tools Were Added to GEM
2024-06-18
The following new tools were added to GEM:
- A File tool, at the top right of the Legend, imports GIS files for display on the map. These files are only loaded into local browser memory for the current session.
- Measure in the map display provides tools to measure lengths and areas.
- Draw in the map display provides tools to sketch lines and polygons on the map, and to delete or modify them.
- Print in the map display generates a printable snapshot of the current map with legend tiles of the displayed content.
- A Scale Bar has also been added to the map display.
Welcome to GEM!
2022-09-14
The Geospatial Energy Mapper (GEM) has been launched!