Resistive Loading of Photovoltaic Modules and Arrays for Long-Term Exposure Testing

C. R. Osterwald, J. Adelstein, J. A. Del Cueto, W. Sekulic, D. Trudell, P. Mcnutt, R. Hansen, S. Rummel, A. Anderberg, T. Moriarty

Research output: Contribution to journalArticlepeer-review

13 Scopus Citations


This paper investigates the feasibility of using fixed resistors instead of active maximum power tracking as electrical loads for long-term exposure testing of photovoltaic modules and arrays. The method of investigation was to compare resistive versus active loading on two modules for which historic current-voltage data over time were available. Also, a small amorphous silicon array was installed with a resistive load and the performance has been monitored versus time. The major conclusion of this work is that fixed resistive loading is an inexpensive and viable means of loading photovoltaic devices for exposure testing if the resistance value used is close to the ratio of the voltage to the current at the maximum power point under Standard Test Conditions.

Original languageAmerican English
Pages (from-to)567-575
Number of pages9
JournalProgress in Photovoltaics: Research and Applications
Issue number6
StatePublished - 2006

NREL Publication Number

  • NREL/JA-520-38342


  • Arrays
  • Exposure
  • Loading
  • Modules
  • Photovoltaics
  • Testing


Dive into the research topics of 'Resistive Loading of Photovoltaic Modules and Arrays for Long-Term Exposure Testing'. Together they form a unique fingerprint.

Cite this