Neighbor trees&#39; shade impact solar panel production?
<p>Is there any case law or precedent or? regarding a neighbor's trees whose shadow covers another's roof for a good part of the day and thus block solar panels from working as efficiently as they might. The trees were there first if that makes a difference. </p>

<p>It isn't precisely clear which jurisdiction you are located in (recall that this website handles matters from everywhere in the world).</p>

<p>But, generally speaking, in the United States, you have no right to limit someone's existing tree on their property merely because it casts a shadow on your solar panels. The installer should have known better.</p>

<p>A minority of U.S. states, including California, consider new construction that blocks the view of existing structures a form of "nuisance" that can be abated if it unreasonably interferes with the enjoyment of the existing property. But, that protects existing structures, rather than new ones.</p>

<p>In Japan, there are building code requirements designed to insure that key portions of every home get natural sunlight daily. Again, this only applies to the construction of new buildings.</p>

<p>I know of no law that gives someone who newly installs a solar panel a right to remove or trim a neighbor's tree simply by virtue of doing so. And, without knowing whose law is involved it would be impossible to determine with any reliability. </p>

<p>The property with the solar panel could seek to buy the right to an unobstructed view from the property with the tree, in what would probably be called a "view easement", but that would only happen if the terms were such that both consented and it was written up in a legal document to that effect.</p>

property trees