South West Facing Roof Solar Panels

The diagram shows how the sun passes over a house with solar panels on the south and west facing roof surfaces.

South west facing roof solar panels.

The results backed us up on this theory showing poor. The sun rises at 5 52 am and begins directly shining on the south facing panels at 8 15. At higher pitches the difference increases. Let s walk you through an average day august 6th to be exact.

I would be grateful for any thoughts suggestions on the direction to face solar panels. At lower pitches say 30 the east west facing panels perform slightly closer to south. In general solar panels that are oriented directly east or directly west will produce about 20 percent less electricity than if they were facing south. Even with this decrease in performance solar panels will produce enough electricity to save you hundreds of dollars a year.

An example of a south west facing roof. We assumed a 40 elevation for the roof. The flatter a south facing roof is i e. We also took at look at a tilt angle of 40 for the south facing orientations mainly just to show that a south facing roof with a steep pitch is probably not a good place for solar panels.

The closer to horizontal the better it will be for solar. We are looking at installing a 5kw system lg neon 2 panels and fornius inverter on a double storey house and had initially thought of splitting the panels between our north east and west facing roofs so that we got production over most of the day 8 panels north 4 east and 4 west. Why orientation matters with rooftop solar.