Two panels with identical specifications are giving vastly different differences in production estimates

[Brano Lalic]

By choosing panels from the base, Trina Solar TSM-705NEG21C.20 Vertex N Bifacial 705 W, or Trina Solar TSM-705-NEG21C.20 VERTEX N 2024 705 W, which have identical characteristics, in an outdoor setting, I get large differences in production estimates. Why?

[developer_mh]

Hi Bruno Lalic,

the difference comes from the low light parameters:

left: "TSM-705NEG21C.20 Vertex N Bifacial 705 W"                                  right: "TSM-705-NEG21C.20 VERTEX N 2024 705 W"

 

In one case, the manufacturer has chosen the "standard low-light performance", which defaults to the two-diode-model for this module. In the other case, the manufacturer entered low light values himself, that is, defined values for voltage and current at 200 W/m². 

Hope that helps, kind regards,

Martin