The Solar Energy Environmental Mapper is a web-based application that displays environmental data for the southwest U.S. in the context of utility-scale solar energy development.
It provides access to screening-level data about resources and constraints, with analysis tools to help improve siting decisions.

Explore maps of solar resource availability and environmental data. Zoom to pre-defined bookmarks or create your own. Print a copy of your map.

Retrieve detailed information for features on the map. Search for locations of interest by place name, address, Public Land Survey System, or by lat/long.

Retrieve a report based on a custom area. Measure distances and areas on the map.
- Added SEIA Solar Facility Location, EPA Brownfield Sites, and DOD Formerly Used Defense Site layers.
- Added USGS GAP Protected Areas Database report type.
We have many updates planned. Please subscribe for e-mail updates if you want to be notified when new features are released.
This project was sponsored by the Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy, and the Bureau of Land Management of the U.S. Department of the Interior.


