The direction that your roof faces also referred to as the azimuth angle is the primary factor determining how much sunshine your solar panels will see over the course of the day.
Going solar south facing roof.
If i again jump into using solar terminology a south facing roof with no shade is 100 of ideal and panels facing to the east or west produce about 85 of ideal.
Solar panels are most effective when installed on south facing roofs.
Typically solar panels perform best on south facing roofs with a slope between 15 and 40 degrees though other roofs may be suitable too.
Panels mounted on a standard pitch roof facing east or west will produce approximately 15 less output than panels mounted on a south facing roof of a standard pitch.
You should also consider the age of your roof and how long until it will need replacement.
To get the best results from your solar system you should install your panels on a south facing roof with unobstructed exposure to sunlight.
Therefore directions like southwest or southeast are fine.
An easy way to determine the direction that your roof faces is to use google maps.
Consider your home s orientation roof size and energy usage to make the most of your solar system.
So while an east or west facing roof is not a work it is at least a solid b.
However solar panels can be orientated on any roof that faces south of either east or west.
The sun sets at 8 20 pm and as long as the west facing roof isn t blocked by obstructions it received light up until the end data from 3d sun path and kesian solar elevation calculator under tou summer peak times are typically between 3 and 8 pm.