Method and System for Accessing PV Resource Data from the NSRDB

Research output: Contribution to conferencePaperpeer-review


This study developed a capability to provide spectrally resolved solar resource data from the National Solar Radiation Data Base (NSRDB), effectively providing 20 years of half-hourly data for all of the United States at a 4-km by 4-km spatial resolution. These data are now available freely to users directly through a geographic information system-based web interface ( as well as an application programming interface. Users of these data can conduct more accurate pre-feasibility studies and assess multiple photovoltaic (PV) technologies. It is expected that widely used models such as PVSyst, the National Renewable Energy Laboratory's (NREL's) System Advisor Model (SAM), and First Solar designed PlantPredict will develop the capabilities to use these spectral data.


ConferenceISES Solar World Congress 2019, SWC 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019, SHC 2019

Bibliographical note

See NREL/CP-5D00-74453 for preprint

NREL Publication Number

  • NREL/CP-5D00-77321


  • cloud
  • photovoltaic
  • PV
  • radiative tranfer
  • resource
  • solar radiation


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