[Greenbuilding] Electrical line shading of solar PV modules

[Keith Winston]

This is a GREAT example of shading issues. Thanks!

On Wed, Apr 6, 2011 at 9:49 AM, gdreysa <gdreysa at gmail.com> wrote:

>  Hi Eli,
> I'd agree with Keith that some caution is in order here.
>
> This is a picture of my Enphase PV array with some modest shading:
> http://www.builditsolar.com/Projects/PV/EnphasePV/Shading.htm
>
> You can see from the real time output plot that even the panel with just a
> line across it is very much effected.
> The shadow is wider than a power line would cast, and maybe the effect
> would diminish as the shadow gets narrower, but I'd be careful.
>
> If I think about it later today and the weather cooperates, I'll set up
> narrower shadow and let you know how that comes out.
>

That would be really interesting. You might try a shadow directly vertical
on one, horizontal on another, and diagonal on another. A strip of masking
tape would do it...

k
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