progressivly lower outputs from n to s side of roof

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  • toddbailey
    Member
    • Mar 2012
    • 83

    progressivly lower outputs from n to s side of roof

    Hi All,

    My house is surrounded by trees and I'm trying to figure out which ones to remove to get a more consistent power generation. The interesting thing is even when the array is in full sun exposure I see a sequentially drop in output from the array. Example According to the enphase enlighten manager display, going from north to south a typical output reading might be 123,138,159,170,183,196,208,204,218,219,224,224 This reading was taken at 11:30, so the sun is mostly directly over head, another reading 20 minutes later shows the same pattern.
    This was taken a few minutes ago, btw. I'm curious why the northern side of the roofline has such a lower output than the southern side. There is a near by tree line on the north side about 20 ft from the roof edge. There is also a west tree line about 200 ft away that covers the entire west side of the property. The roof is facing south west btw. My location in Seattle in case you're wondering

    Thanks for any advice
  • ButchDeal
    Solar Fanatic
    • Apr 2014
    • 3802

    #2
    a photo of your layout and/or roof would help.

    Also are you in the northern or southern hemisphere?
    OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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