The document is dated 2022. Here's the currency chart from xe for the past year.
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Using your estimate of 2180 vs $2810 only requires an exchange rate of 1.29:1 . Not unreasonable (especially since Tesla's data would primarily be US prices).
Looking at 2,180
If you can't think of what supporting equipment is, shouldn't it also be removed from Tesla's cost to keep things even?
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The easiest part to install is no part...
The easiest part to setup is no part...
Half the connections to make is easier than double (assuming optimizers are not built into the panel).
As to ease of repair: Using a binary search, a 32 panel string only requires 5 points to be checked to find a fault. Isn't a failed connection between optimizers going to require the same (or more) effort to locate than a failure between panels? (And again, half the connections to fail).