All versions of the NSRDB, including TMYs, are now available to download in one place with the NSRDB Viewer. For the most complete, easy-to-access data, NREL recommends using the NSRDB Viewer instead of prior versions of the NSRDB.

Archived Historical Data

National Solar Radiation Database 1961-1990

The National Solar Radiation Database 1961-1990 contains 30 years of solar radiation and supplementary meteorological data from 237 National Weather Service sites in the United States and its territories. The dataset for this timeframe includes:

Solar Data (hourly)

Statistical Summaries Daily Statistics Files

Solar Radiation Data Manual for Buildings Flat-Plate and Concentrating Collectors

Documentation and User Manuals

Historical Maps

Download NSRDB 1961-1990 Archive Data

National Solar Radiation Database 1991-2005

The 1991-2005 National Solar Radiation Database holds solar and meteorological data for 1,454 locations in the United States and its territories. The dataset for this timeframe includes:

Solar Data (hourly)

Statistical Summaries Daily Statistics Files Hourly Statistics Files Threshold Files

Documentation and User Manuals

Historical Maps

Download NSRDB 1991-2005 Archive Data