>
>
> My question is, apart from having to probably angle the panel differently
> to catch most effective irradiation, is there an efficiency difference
> between the two orientations, or is it just a case that more panels can b=
e
> fitted into a given space in a vertical aspect?
>

A minor disadvantage that may present it self when in landscape is the
build up of dust and dirt that can stain or obscure the lower portion of
the bottom most cells.  I suspect this will reduce the performance of these
cells.

Many panels that I have had experience with often have a margin between top
and bottom row of cells and their respective edges .  However, left and
right column cells are positioned very close to their respective edges
(when the panel is viewed in portrait).

I had always assumed the gap (margin/space/buffer) was intentional to help
reduce the chances that the build up of dirt at the bottom would have any
effect.

As mentioned, this would be a minor disadvantage, but where I was
maintaining these panels, it was often very dusty, along with the
occasionally light shower, just enough to wash the dust down to the bottom
where it would leave a very distinct residual appox 1cm wide dust mark. If
the panels were in landscape, it would have definitely masked a portion of
the lower cells.

Justin
--=20
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