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Solar Resource Maps and Data

Find and download solar resource map images and geospatial data for the United States and the Americas.

For more information on NREL's solar resource data development, see the National Solar Radiation Database (NSRDB).

Maps

The maps below illustrate select multiyear annual and monthly average maps and geospatial data from the National Solar Radiation Database (NSRDB) Physical Solar Model (PSM). The PSM covers most of the Americas. Learn about the NSRDB PSM

To access the data directly and learn more about data development, please visit the NSRDB.

These maps may be used in electronic and printed publications with proper citation.

Global Horizontal Irradiance

Download the global horizontal irradiance (GHI) maps individually below, or download all the GHI maps at once

Note: The publication dates listed below don't necessarily reflect the publication dates of the data therein.

Annual Average

Monthly Averages

The monthly average maps use the same color scale and class breaks as the annual average map for the contiguous United States for the purpose of showing monthly variation relative to the annual average.

Direct Normal Irradiance

Download the direct normal irradiance (DNI) maps individually below, or download all the DNI maps at once

Note: The publication dates listed below don't necessarily reflect the publication dates of the data therein.

Annual Average

Monthly Averages

The monthly average maps use the same color scale and class breaks as the annual average map for the contiguous United States for the purpose of showing monthly variation relative to the annual average.

Geospatial Data

To make the above maps, the multiyear solar irradiance was calculated from the NSRDB. These derived data sets are provided below as geospatial rasters.

To view and use these data sets, you need appropriate geographic information system software.

The Americas

Global Horizontal Irradiance (Multiyear annual and monthly averages)

Feb. 22, 2018

Download Rasters

Direct Normal Irradiance (Multiyear annual and monthly averages)

Feb. 22, 2018

Download Rasters

Cite the Maps and Data

Please cite use of the maps and data accordingly.

Sengupta, M., Y. Xie, A. Lopez, A. Habte, G. Maclaurin, and J. Shelby. 2018. "The National Solar Radiation Data Base (NSRDB)." Renewable and Sustainable Energy Reviews  89 (June): 51-60.

Contact

If you have any questions about the maps and data, please  contact us.