The National Solar Radiation Database (NSRDB) is a serially complete collection of hourly and half-hourly values of meteorological data and the three most common measurements of solar radiation: global horizontal, direct normal and diffuse horizontal irradiance.
It covers the United States and a growing subset of international locations. These data have been collected at a sufficient number of locations and temporal and spatial scales to accurately represent regional solar radiation climates. For a given location covered by the dataset, it is possible to see the amount of solar energy that was at a given time, and to predict the potential future availability of solar energy based on past conditions.
NSRDB data is publicly available at no cost. The data can be accessed via the NSRDB Viewer Application. Additionally NSRDB data are compatible with many system performance and economic models, including the following products created by NREL.
Supported by the U.S. Department of Energy's SunShot Initiative, the NSRDB is a widely used and relied-upon resource. The database is managed and updated using the latest methods of reserach by a specialized team of forecasters at the National Renewable Energy Laboratory (NREL).
Data collection for the NSRDB is a collaborative effort. Contributors include: