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SolarFarmer 1.6

Date: 9 Jun 2025Download installerView release notesView documentation

Desktop application

  • Calculation screen restructuring
    • New 'Calculation settings' task screen (docs)
      • Clearer settings
      • New settings added: 'Auxiliary effect', 'System availability effect', 'Current/voltage MQF weights', 'Solar zenith angle limit'
      • 'Soiling effects' moved to its own task screen
    • Updated 'Run calculation' task screen (docs)
      • Clearer to see what data will be used for the calculation
  • Azure maps instead of Bing Maps
    • SolarFarmer has transitioned from the deprecated Bing Maps API to the Azure Maps API for background imagery.
    • The Setup Location Wizard now has also been updated to use OpenStreetMap tiles, and the location search uses the new Azure Maps API.
  • Storing calculation results in workbook
    • Calculation results are now stored in the workbook
  • Other UI improvements
    • Inverter voltage derate functionality (docs)
    • Fill monthly albedo values from solar resource time-series monthly summary values (docs)
    • Add PVEM IAM model and use CIEMAT IAM model in the cloud (docs)
    • Add a simplified visualisation option to speed up custom stringing (docs)
    • Bug fixes

API calculation

SolarFarmer API v5 was released.

Updates

  • Support for 110-cell modules (twin 55-cell modules)
  • Definition of PV system auxiliary losses added
  • Definition of PV system availability loss added
  • Voltage derate dependency added
  • New IAM profile models added
  • Update of the shading calculation order
  • LossTreeTimeseries includes night timesteps

Bug fixes

  • Report of a shaded gain for an edge case in 3D tracker sites at sunrise/sunset has been fixed.
  • Invalid azimuth exception in certain 3D fixed-tilt projects.
  • PVsyst standard format of TMY data did not cope with trailing semicolon characters.
  • The variable IL_Oper in the PVsystFormatResults.txt file was incorrect for calculations with different number of MPPT inputs.
  • The variable I_Boost in the PVsystFormatResults.txt file did not include efficiency.
  • The variable UnavLss in the PVsystFormatResults.txt file had incorrect sign during night timestamps.
  • Partial column request of PVsyst timeseries results not working for ModelChainAsync endpoint.
  • Results missing in the PVsystFormatResults.txt file when running multi-year calculation in ModelChain endpoint
  • Calculation with power optimizers with minimum voltage constraints may crash. The handling of IV curves for optimizers with these constraints has been improved.

See the full API Release Notes for more details.