Recent Improvements in the National Solar Radiation Database (NSRDB)

Research output: NRELPoster


The National Solar Radiation Database (NSRDB) has significantly evolved since the first release of the point source database in 1993. The NSRDB has been widely used by the solar energy industry to provide long-term time-series solar resource data for various project phases. The NSRDB represents the state of the art in the satellite-based estimation of solar resource information and uses a unique physics-based modeling approach that allows improvements in accuracy with the deployment of the next-generation geostationary satellites. This poster provides an overview of (1) the improved spatiotemporal resolution; (2) on-demand services and their applications; (3) future Improvements, such as a new direct normal irradiance model and new methods to gap-fill missing data using physics-guided machine learning; (4) data quality; and (5) data dissemination.
Original languageAmerican English
StatePublished - 2022

Publication series

NamePresented at Solar Power International 2022, 19-22 September 2022, Anaheim, California

NREL Publication Number

  • NREL/PO-5D00-83375


  • National Solar Radiation Database
  • Physical Solar Model
  • PSM
  • solar radiation
  • solar resource data
  • spatiotemporal resolution


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