Long Term Damage Testing (NREL)

Research output: NRELPresentation


DOE's Regional Test Center program has fielded several strings of PV modules as part of their Long Term Testing program. Some of these modules have been installed since 2016 and have been exposed to severe weather events. A key to developing long lifespans for PV modules (in excess of 30 years) is understanding how damage and defects develop, propagate and progress. Researchers at the NREL Regional Test Center have started developing testing procedures and analysis tools in order to characterize modules in a controlled manner with the goal of understanding how damage spreads under normal operations. Characterization methods include EL and IR imaging, outdoor and indoor IV curves, and long term exposure monitoring. Modules to be evaluated will be chosen based on severity of defect, ability to track changes in defect and space requirements. The samples will be loaded at maximum power using grid-tied inverters or other means. Gathering and reporting on this data may help engineers and scientists design for damage and improve long-term performance.
Original languageAmerican English
Number of pages9
StatePublished - 2022

Publication series

NamePresented at the 2022 Photovoltaic Reliability Workshop (PVRW), 21-25 February 2022

NREL Publication Number

  • NREL/PR-5K00-82248


  • crack damage
  • long term testing
  • PV


Dive into the research topics of 'Long Term Damage Testing (NREL)'. Together they form a unique fingerprint.

Cite this