In some American and UK pictures I see some triangle panels, why don't I see them in use here?

Oh, I never thought about this. Could it be that they may look awkward on the inside of the house. They would make quite a visual statement that may only look good in a contemporary or modern space.

Hired I misunderstood! I don't know why, I read solar panels but in my mind I was thinking skylights! Duuuu! Now I get it;)

That would make sense!

As a design element, I'm sure some people would prefer triangle panels- there could be a potential market to tap there Tribbletrek? What about round ones that look like the sun itself??? :-)

Why not? Though octagons would fit more on the roof.

A trapezoid might be very on trend!!

The main thing is to fit as many panels as possible on the north side.

Makes sense to me. I never really thought about it before.

For US folk, our North is your south.

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