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Solar Data

These datasets detail the solar resource available in the United States.

10-km Data

These data provide monthly and annual average daily total solar resource averaged over surface cells of 0.1 degree in latitude and longitude, or about 10 km in size.

Geographic Coordinate System Name: WGS_1984

Coverage File Last Updated Metadata KMZ File
Lower 48 and Hawaii DNI 10-km Resolution 1998–2009 Zip 9.6 MB 09/12/2012 Direct Normal.xml Direct Normal.kmz
Lower 48 and Hawaii GHI 10-km Resolution 1998–2009 Zip 8.5 MB 09/12/2012 Global Horizontal.xml Global Horizontal.kmz
Lower 48 and Hawaii PV 10-km Resolution 1998–2009 Zip 11.3 MB 09/12/2012 Photovoltaic.xml Photovoltaic.kmz

This dataset can be viewed via Google Earth. To do so, choose a KMZ link above.

Geographic Coordinate System Name: GCS_North_American_1983

Coverage File Last Updated Metadata KMZ File
Lower 48 DNI 10-km Resolution 1998–2005 Zip 9.1 MB 12/13/2010 Direct Normal.xml Direct Normal.kmz
Lower 48 GHI 10-km Resolution 1998–2005 Zip 10.4 MB 04/01/2011 Global Horizontal.xml Global Horizontal.kmz
Lower 48 PV 10-km Resolution 1998–2005 Zip 9.1 MB 03/24/2011 Photovoltaic.xml Photovoltaic.kmz
Hawaii DNI 10-km Resolution 1998–2005 Zip 216.0 MB 05/13/2009 Hawaii Direct Normal.xml  
Hawaii PV 10-km Resolution 1998–2005 Zip 1.6 MB 03/24/2011 Hawaii Photovoltaic.xml  

This dataset can be viewed via Google Earth. To do so, choose a KMZ link above.

Geographic Coordinate System Name: WGS_1984

These data provide filtered solar resource averaged over surface cells of 0.1 degree in latitude and longitude, or about 10 km in size.

Coverage File Last Updated Metadata
Southwest US DNI Filtered 2-Percent 10-km Resolution 1998–2009 Zip 500.49 MB 12/04/2012 2 percent.xml
Southwest US DNI Filtered 3-Percent 10-km Resolution 1998–2009 Zip 530.29 MB 12/04/2012 3 percent.xml
Southwest US DNI Filtered 4-Percent 10-km Resolution 1998–2009 Zip 517.93 MB 12/04/2012 4 percent.xml
Southwest US DNI Filtered 5-Percent 10-km Resolution 1998–2009 Zip 489.26 MB 12/04/2012 5 percent.xml
Southwest US DNI Filtered Less than 1-Percent 10-km Resolution 1998–2009 Zip 373.62 MB 12/04/2012 Less than 1 percent.xml

Solar Summaries

The Solar Summaries spreadsheet contains annual 10-km solar data by state and zip code.

National Solar Radiation Database TMY3 Stations

These data provide the approximation of the best National Solar Radiation Database (NSRDB) weather station to use given a specific location. View a map of this data.

Geographic Coordinate System Name: USA_Contiguous_Albers_Equal_Area_Conic

Coverage File Last Updated Metadata
TMY3 NSRDB Boundaries Zip 6.2 MB 06/01/2012 TMY3 NSRDB Boundaries.xml

The zipped shapefile datasets are designed to be used in GIS software applications.

NREL Solar Radiation Research Laboratory Baseline Measurement Station

The Baseline Measurement System provides links to live graphical displays and solar data from the Solar Radiation Research Laboratory in Colorado.