Solar Panels South West Facing Roof

An example of a south west facing roof.

Solar panels south west facing roof.

What happens if your roof isn t facing south. At higher pitches the difference increases. That captures the most solar energy over the course of the day which benefits the homeowner but. I would be grateful for any thoughts suggestions on the direction to face solar panels.

Solar panel orientation in the uk. Here s a quick example of a south west facing roof in london. 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. For years homeowners who bought solar panels were advised to mount them on the roof facing south.

Let s walk you through an average day august 6th to be exact. At lower pitches say 30 the east west facing panels perform slightly closer to south. The diagram shows how the sun passes over a house with solar panels on the south and west facing roof surfaces. Why orientation matters with rooftop solar.

Even with this decrease in performance solar panels will produce enough electricity to save you hundreds of dollars a year. We assumed a 40 elevation for the roof. As we re in the northern hemisphere the best solar panel orientation is obviously south but.