Validation of Photovoltaic Modeling Tool HelioScope Against Measured Data

Research output: NRELTechnical Report


HelioScope is a cloud-based solar design software developed by Folsom Labs to model arrays based on physical design. Folsom Labs received a grant from the Department of Energy for the National Renewable Energy Laboratory to validate the performance of HelioScope's simulation engine against measured PV system performance. This study builds upon previous validation work by NREL of multiple other PV modeling tools, using the same fixed-tilt systems with available system specifications. HelioScope designs were set up using the same system specifications and concurrent weather data as were used in previous studies. The predicted performance results from the simulations were compared with measured data and to performance predictions by other PV modeling tools.
Original languageAmerican English
Number of pages13
StatePublished - 2018

NREL Publication Number

  • NREL/TP-6A20-72155


  • HelioScope
  • modeling
  • SAM
  • Small Business Voucher Program
  • System Advisor Model
  • validation


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