Bankability/QA Testing

PV Module Tech 2021.JPG

CFV Labs 40 Year PV Module Reliability Testing Program

  • PV Module reliability testing horizons need to correlate with financial modeling assumptions.

  • CFV Labs has developed a comprehensive 40 year bankability testing program based on IEC 63209 with technology specific customization.

  • Includes tests for material durability, cell degradation, mechanical durability and performance testing. 

63209 Backsheet Failures.JPG

CFV Labs PV Module Module Backsheet Testing

  • CFV Labs has tested both older and newer backsheets to the new IEC TS 63209 backsheet testing protocol.

  • We find that both older and newer backsheets can fail this test.

  • Module construction is important, not just backsheet material.

  • Ongoing testing at CFV is pushing the expected horizon of backsheet tests out to 40 years. 

Bankability Front Page.JPG

CFV PV Module Bankability Program

  • Comprehensive bankability testing program based on IEC 63209 with technology specific customization.

  • Includes tests for material durability, cell degradation, mechanical durability and performance testing.

  • Third party BOM verification and build witness. 

  • Report sharing with investors and IEs.

LID LeTID Front PAge.JPG

Cell Degradation Testing

  • Both LID and LeTID can be problems with newer technology modules, especially modules made from PERC cells, and some bifacial modules.

  • LID and LeTID operate via different mechaninsms and on different time scales and and may actually overlap, making disentangling the effects problematic.

  • CFV has a protocol designed to isolate and quantify each effect to the extent possible.