As you are aware, the sun rises from the east and sets in the west. During the regular tracking though, the sun moves towards the north, making north the best face to maximise your solar gain.

Another factor to take into account when optimising your solar gain is the season. As you can see in the diagram, solar gain in summer is higher due to the position of the sun. In winter, the sun is further north, however the angle is not as optimal compared to summer.

This being said, if you have northern facing roof space free from any obstructions such as trees or buildings, then you should opt to install solar panels there, so that you are guaranteed the best solar gain.

Solar Gain and solar panel direct

Solar gain and solar panel directional losses

  • You can also install solar panels on the east and the west facing front

It’s not uncommon to have solar panels installed on the east or west facing sides of your home or business. Although the solar gain is lower, the directional losses are not that great.

  • The solar panel directional losses for north-east and north-west vary from around 3% to 4%.
  • For an east or west facing roof, your solar gain loss will be around 12% to 18%

An experienced solar installer or sales rep will be able to work out the optimum solar panel direction and angle on your property, to will give you the most solar gain and best return on investment. Although not essential, it is advised that you ask for a plan or design for your solar power system, outlining the options for installation and the exact location where the solar panels will be placed.

Solar-Gain

“What if a sales rep or installer recommends that I install the solar panels on the south facing roof?”

“I suggest you get a second opinion. Honestly, it’s a no brainer! Unless of course you live in the northern hemisphere.”

 

AustralianSolarQuotes Social Media-Share this with your friends

X
- Enter Your Location -
- or -
×

jaspal from Seacombe Gardens, SA asked for 3 quotes for solar about 5 hours ago!

ken from Altona Meadows, VIC asked for 3 quotes for solar about 5 hours ago!

Yolanda from Berrimah, NT asked for 3 quotes for solar about 5 hours ago!

gulvir from Yangebup, WA asked for 3 quotes for solar about 5 hours ago!

das from West Wollongong, NSW asked for 3 quotes for solar about 6 hours ago!

Andrew from Tiddy Widdy Beach, SA asked for 3 quotes for solar about 6 hours ago!

Kalpe from Truganina, VIC asked for 3 quotes for solar about 6 hours ago!

sam from Bayswater North, VIC asked for 3 quotes for solar about 7 hours ago!

Maulik from Truganina, VIC asked for 3 quotes for solar about 7 hours ago!

Gary from Chipping Norton, NSW asked for 3 quotes for solar about 7 hours ago!

Jason from Chuwar, QLD asked for 3 quotes for solar about 8 hours ago!

philip from Kalimna, VIC asked for 3 quotes for solar about 8 hours ago!

Carmen from Strathfield, NSW asked for 3 quotes for solar about 9 hours ago!

john from Gilston, QLD asked for 3 quotes for solar about 9 hours ago!

Mark from Bellbird, NSW asked for 3 quotes for solar about 9 hours ago!

Rob from Rosebud, VIC asked for 3 quotes for solar about 13 hours ago!

Martin from Kiama Downs, NSW asked for 3 quotes for solar about 13 hours ago!

Diane from Ridgewood, WA asked for 3 quotes for solar about 13 hours ago!

David from Mayfield West, NSW asked for 3 quotes for solar about 14 hours ago!

John from Cranebrook, NSW asked for 3 quotes for solar about 15 hours ago!