Spectral Correction Variability and Energy Yield Impact for cSi Systems and the Effect of Clouds

Umay Akkoseoglu, William F. Holmgren, Mark Mikofski, Jeff Newmiller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spectral correction is commonly applied to CdTe systems while current standard practice assumes the effects are negligible for cSi system energy yield. In this work, we quantify the difference in energy at the inverter level by applying spectral correction using First Solar model for several sites using TMY and timeseries weather data. We demonstrate that on average, a spectral correction application can lead to an energy yield difference of 0.4% at the inverter. We also review the spectral correction uncertainty from the First Solar model against the value calculated from FARMS-NIT spectra and measured quantum efficiency.

Original languageEnglish (US)
Title of host publication2025 IEEE 53rd Photovoltaic Specialists Conference, PVSC 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages836-840
Number of pages5
ISBN (Electronic)9798331534448
DOIs
StatePublished - 2025
Event53rd IEEE Photovoltaic Specialists Conference, PVSC 2025 - Montreal, Canada
Duration: Jun 8 2025Jun 13 2025

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Conference

Conference53rd IEEE Photovoltaic Specialists Conference, PVSC 2025
Country/TerritoryCanada
CityMontreal
Period6/8/256/13/25

Keywords

  • airmass
  • relative humidity
  • spectral correction
  • spectral irradiance

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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