Solar Position Algorithm for Solar Radiation Applications (Revised)

    Research output: NRELTechnical Report


    This report is a step-by-step procedure for implementing an algorithm to calculate the solar zenith and azimuth angles in the period from the year -2000 to 6000, with uncertainties of ?0.0003/. It is written in a step-by-step format to simplify otherwise complicated steps, with a focus on the sun instead of the planets and stars in general. The algorithm is written in such a way to accommodatesolar radiation applications.
    Original languageAmerican English
    Number of pages40
    StatePublished - 2008

    Bibliographical note

    Supercedes November 2005 version

    NREL Publication Number

    • NREL/TP-560-34302


    • algorithms
    • solar azimuth angles
    • solar position algorithm
    • solar radiation
    • solar radiation applications
    • solar zenith angles


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