National Solar Radiation Database

From Open Energy Information

The National Solar Radiation Database, or NSRDB, describes the amount of solar energy which is available at any location in the United States. It is generated by the National Renewable Energy Laboratory, with the assistance of many collaborators.[1]

Technical Overview

Per its user's manual, "The NSRDB is a serially complete collection of hourly values of the three most common measurements of solar radiation (global horizontal, direct normal, and diffuse horizontal) over a period of time adequate to establish means and extremes, and at a sufficient number of locations to represent regional solar radiation climates."[2]

There have been two releases of the NSRDB, each covering different time periods.[3] The original covers 1961-1990, while an update covers 1991-2005. The releases are summarized in the following table.

Original Update
Years Covered 1961-1990 1991-2005
Measuring Stations Map of NSRDB 1961-1990 Measuring Stations
Total: 237
Map of NSRDB 1991-2005 Measuring Stations
Total: 1,454
Contents TMY2 Data Sets TMY3 Data Sets
Documentation NSRDB User's Manual
TMY2 User's Manual
NSRDB User's Manual
TMY3 User's Manual
Reference Program Website[4] Program Website[5]