On Wed, 4 Apr 2012 12:22:18 -0700 (PDT), PolicySpy
wrote:

Malcom Mal Reynolds wrote:



but the solar panels will shade the roof thus potentially lowering the AC demand


PolicySpy writes:

Trees have water evaporating out of the leaves. The local temperature
is cooler under natural shade than under artificial shade.

There are roof systems that go down on a batten system and have an air
space but trees are cooler than the roof system. But the home owner
can have the roof system and the trees. The home owner can't have
solar panels and trees.

Trees large enough to shade a house so close that were they to fall
would fall onto the house are never a good idea. The best way to
maintain temperature inside a house is with insulation, especially in
the attic. Trees shading a roof will also cause damage by not
permitting the roof to dry.