I have been trying to decide where to place my Solar PV array. The available choices are either
( A) on the main roof of the house or
( B ) on the roof of the garage behind the house.
( A ) Is "aesthetically challenging" according to both my architect and my wife but is south facing with no overshadowing.
( B ) is visually more acceptable but could be overshadowed by the main house.
( B ) was the preferred option but I needed to asses the extent of the overshadowing during the year.
It turns out that SketchUp allows you to do this very easily.
First tell SketchUp where in the world your house is situated (Window - Model Info - GeoLocation) and enter latitude and longitude.
Secondly enable the shadow tools (Windows - Shadow). Use the sliders to vary the date and time of day
The attached file shows the shadowing at noon in January.
Edited by Alphonsox, 03 June 2014 - 07:48 PM.