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I am having a 16.32Kw Tesla string solar system installed. Tesla’s equipment would include the following equipment (NOTE: no optimizers or mini inverters):
  • 48 x Hanwha 340 Kw panels (Q.PEAK DUO BLK-G6+)
  • 2 x Tesla 7.6Kw Inverters (model 1538000-00-E)
I have been told by a competitor that the Tesla system is a waste because a string system is not appropriate for my roof. They say this because Tesla uses a string system and the chimney shadow that will be over some panels from mid to late afternoon will reduce the output to “the output of the most shaded panel”. They say that because of the chimney shadow, I would need a system with either Optimizers or Micro-inverters.

My Tesla Project Advisor says that since Tesla uses MPPT, which does the same thing as an Optimizer and thus the rest of the system will not be affected by shadow over a few panels.
Who is correct? NOTE: the chimney shadow will cover at least 3 panels from 3pm in the afternoon until sunset (see photo below taken at 3pm in March).

Also, since the total KW of the two inverters is only 15.2kw, does that mean that my output will be capped? Why would Tesla sell a 16.32kw system when the inverters are only rated for 15.2Kw? I have the option to add another 2 panels but what would be the point if the inverter capped it?

Advice greatly appreciated!

Tesla solar design.png

Roof with Chimney 4pm on 3_9_21.jpg

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