SunIrradiance was developed to simulate the solar spectrum and calculate the module performance under real climate conditions. It is limited to the Slovenian irradiation conditions.

Key features

  • spectral and global irradiance model
  • one-diode PV cell/module model
  • energy losses in PV systems
  • self-shading losses
  • multi oriented PV modules in a PV system


Due to calibration to Slovenian irradiation condtitions, detailed description is in Slovenian language only.



BRECL, Kristijan, TOPIČ, Marko. Development of a stochastic hourly solar irradiation model. International journal of photoenergy, ISSN 1110-662X, 2014, vol. 2014, pp. 1-7 (link)



This program is used for internal use.

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