
I remember posting the same concern on a forum and a "brand ambassador" responded that if a panel is partially in shade, the entire panel would produce no power. Not true at all.ckjs said:
…[snip]…Panels on a curved roof will never hit their peak power
…[snip]…
In any case I bought a Rich Solar MEGA 200W briefcase panel and I stopped worrying about it. Connected to the SEA port in the Nautilus compartment, going through a Victron 100|30 MPPT, on a sunny day, with good alignment, I get 170W+ of power.

