The Solar Prospector tool was decommissioned on September 30, 2016. Use the National Solar Radiation Database (NSRDB) to access NREL solar geospatial data going forward. Questions? Contact us at

SolareAnywhere Data, model version 2.2 from Clean Power Research was the source for the Solar Prospector irradiance data set. You can continue to access the data directly from their site free of charge after September 30, 2016.