Hi William,
We deal with this all day in California. You should go in the attic, figure out
the truss type (howe, scissor...), get the spans and sizes of the wood, and
pictures of the grade stamps. You can then send this off to a structural
engineer to get a letter and a digitally stamped set of your plan set. The
Engineer may request structural additions, or different spacing for the
penetrations, but most truss is pretty sturdy and capable of supporting the
solar panels.
If you throw a rock on linkedin, you will hit a Structural Engineer. If you
need some help, send me a note off list.
Nick Vida
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