The NSRDB Viewer is an interactive Web-based GIS application for visualizing, examining, and downloading complete solar resource data, including TMYs.
Both U.S. and international data sets are available in the NSRDB Viewer
Need help downloading files? Download instructions are available. Instructions for importing NSRDB data into PVSyst are also available.
NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.