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 sun rises at 5 52 am and begins directly shining on the south facing panels at 8 15. An example of a south west facing roof. At higher pitches the difference increases. 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. Debating on a having part of my solar panels 6 out of 20 facing west to catch some sun in the winter or b am i better off making more sun all facing south and banking that extra power made in a partial credit from the electric company for use in the winter time. The closer to horizontal the better it will be for solar. Let s walk you through an average day august 6th to be exact.

Here s a quick example of a south west facing roof in london. At lower pitches say 30 the east west facing panels perform slightly closer to south. The flatter a south facing roof is i e. Hi i live in hawaii 96740 and have a south facing roof.

I would be grateful for any thoughts suggestions on the direction to face solar panels. Why orientation matters with rooftop 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.