I have some anecdotal experience that may be valuable. I just recently
installed a system under a set of 3 power and 3 phone wires located about 20'
above the array. The system was installed with Enphase micro-inverters, so I
could clearly see the effect of the wires on the shaded modules. I just
checked
todays production, and the modules with wire shadows on them were producing
18-21% less per module than the modules without the shadows.
At another site with just one 1/2" phone wire located 3' above a module,
that module is producing 2-3% less when shaded.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office: 707-789-9537
Fax: 707-769-9037
________________________________
From: Eric Thomas <[email protected]>
To: [email protected]
Sent: Mon, October 11, 2010 12:28:33 PM
Subject: [RE-wrenches] Power line shading
Hey there,
We have a string inverter system installation coming up that has a power line
suspended over the roof. The line is diagonal to the roof and about 20' above
the surface. It will be very challenging to configure the strings to mitigate
shading. Does anyone have experience with the effects on producion from the
thin
shadow cast by the powerline?
Thanks
Eric Thomas
Solar Epiphany LLC
Seattle
(206)919-3014
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