Reference Cell Performance and Modeling on a One-Axis Tracking Surface

Frank Vignola, Josh Peterson, Rich Kessler, Sean Snider, Peter Gotseff, Manajit Sengupta, Aron Habte, Afshin Andreas, Fotis Mavromatakis

Research output: Contribution to conferencePaperpeer-review


Performance of five silicon-based reference cells is examined on a single-axis tracking surface. The reference cells' output are modeled using one-minute sampled spectral irradiance and reference cell temperature measurements. The model also incorporates spectral responsivity data for the reference cell. The transmission of light through the glazing multiplies the sum over all appropriate wavelengths of temperature adjusted reference cell responsivity times the measured spectral irradiance. Modeled reference cell output is compared with measured reference cell output under clear sky and totally cloudy sky conditions. For each reference cell the ratio of modeled to measured output varies by less than 2% over the year.

Original languageAmerican English
Number of pages8
StatePublished - 2022
Event49th IEEE Photovoltaics Specialists Conference, PVSC 2022 - Philadelphia, United States
Duration: 5 Jun 202210 Jun 2022


Conference49th IEEE Photovoltaics Specialists Conference, PVSC 2022
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5D00-82061 for preprint

NREL Publication Number

  • NREL/CP-5D00-85069


  • Modeling
  • Solar Reference Cells
  • Spectral Irradiance


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