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  • 1.  nest under the solar panel

    Posted 06-10-2025 02:33 PM
    Hello everyone,
    I thought the space under a solar panel would be too hot for any nest, but there seems to be one under one of our panels.
    Is this common? any issues?
    Thanks
    Salim

    Salim Rashid

    Professor emeritus, Economics



  • 2.  RE: nest under the solar panel

    Posted 06-11-2025 10:45 AM

    I would not say it is common, but it DOES happen.  Usually not a problem with birds, but squirrels can occasionally chew on wires which can be a problem.  



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    David Hrivnak
    SalesEngineering
    EcoLogical part time
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  • 3.  RE: nest under the solar panel

    ASES Life Member
    Posted 06-12-2025 04:08 AM

    I adjust the tilt angle on one of my arrays twice per year and sometimes find a wasp nest, which means waiting until dusk to make the adjustment.  No birds or squirrels yet (knock wood).



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    Mike Curran
    Retired EE
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  • 4.  RE: nest under the solar panel

    Posted 06-12-2025 09:10 AM

    This must be somewhat common, because my installers had a standard box to check if I wanted "varmint protection" (as one of the guys described it) : - ) for the roof top panels.  This is a plastic mesh all around the edges.

    In my neighborhood, squirrel nests would be almost 100% likely, so I paid for it.  It also keeps out a lot of leaves and other debris.

    If you think it will be problem, you can probably get something like that put on.



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    Robert McGrath
    Software Engineer (retired)
    University of Illinois, Urbana-Champaign
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  • 5.  RE: nest under the solar panel

    ASES Life Member
    Posted 06-13-2025 09:38 AM

    We have some feral cats in the neighborhood that like to hang out under the solar panels at night and when it rains. They must keep the other critters at bay. We had lots of squirrels living in the trees in the backyard before the hurricane last year but never had any issues with nests or even wasps up there. 



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    David Power
    Retired
    Katy TX
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  • 6.  RE: nest under the solar panel

    Posted 06-15-2025 05:29 AM
    Thanks for the responses from David, Mike and Robert.
    i was wondering if the area under the panels magnified heat or not? Would the twigs on the nest burn? A fire hazard?
    Salim 

    Salim Rashid

    Professor emeritus, Economics






  • 7.  RE: nest under the solar panel

    ASES Life Member
    Posted 06-15-2025 05:39 AM

    No it doesn't get hotter under the panels, I had some sensor up there for a while, it's actually cooler under the panels. I wanted to see how much heat would degrade their rated performance. It really didn't, they over perform when it's cold but even at 120f they met their specifications. No worry about fire, just something chewing on the wires possibly but we had a lot of squirrels for years and they weren't interested. As long as the contractor dressed the cabling correctly even that is unlikely. 



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    David Power
    Retired
    Katy TX
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  • 8.  RE: nest under the solar panel

    Posted 06-15-2025 07:46 AM

    As noted in other replies, panels are designed to be cool on the underside. And they should be pretty squirrel proof unless something goes seriously wrong. 

    In my own case, I think I was most concerned about the esthetics, if a lot of junk accumulated under my shiny new solar panels!  : - )

    Also I was thinking that a mass of leaves, etc., isn't super great for the roof under the panels.  Debris might even be a fire hazard, in the worst case.

    Overall, it's not a huge risk of anything serious.  And there is relatively a simple fix, if you want to do something.

    And, I guess, it's worth thinking about how you value providing habitat for wildlife.

    And, on the positive side, if it provides habitat for wildlife that's not a bad thing.  



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    Robert McGrath
    Software Engineer (retired)
    University of Illinois, Urbana-Champaign
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  • 9.  RE: nest under the solar panel

    ASES Life Member
    Posted 06-16-2025 11:10 AM

    The only surprise that we have had is how dirty the panels have gotten over the years. We had them cleaned twice now but they are no longer shiny and pretty. But it hasn't really affected the output much. It's mostly the sticky pollen mixed with the air pollutants the Houston is known for. We just let the rain do its best now. 



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    David Power
    Retired
    Katy TX
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