In other words the absolute best you can hope to get is a 12 improvement by moving the panels.
Solar panels north west facing roof.
Why orientation matters with rooftop solar 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.
You either accept that your output will be down to the sort of levels in the table above or you spend a little more money and try to maximise the your output with technology.
North facing panels on the other hand generally produce much less energy than south facing panels and usually present challenges for homeowners looking.
Depending on your location and roof pitch you re going to lose somewhere between 10 20 efficiency as a result of not having panels facing in a due north direction.
Let s walk you through an average day august 6th to be exact.
The sun rises at 5 52 am and begins directly shining on the south facing panels at 8 15.
It is not worth the expense.
Can solar panels be fitted if your roof is east west facing.
If you re roof runs directly through the east west orientation there would be no real difference in the energy generated by the panels and the installer is correct about the energy loss through the additional wiring although.
If you have the option to place the panels in more of a north east or north west direction it is recommended.
If you don t have a south facing roof east or west facing panels can also be an option you will typically see only a 20 decrease in energy production from a roof facing due east or west.
They produce slightly more electricity during the afternoon and slightly less in the morning.
The diagram shows how the sun passes over a house with solar panels on the south and west facing roof surfaces.
Adding modules on the north side of the roof will not add much bang for the customer s solar buck and would qualify as solar malpractice in my book.
You also can mount solar panels on roofs that face east or west on the roof of another building like a barn or garage or on the ground.
The preference is a north facing roof but there arguments about the benefits of placing panels on a west facing roof.
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.
I get asked this a lot and there isn t really a simple answer.
In adelaide panels on a 10 degree roof west facing will give you 88 of the power of panels on a perfect north facing 30 degree roof.
An ideal south facing roof here is pitched at 7 12 39ish degrees and the north side of that roof will produce less than half as much electricity.
