How does orientation affect solar panel output?

How does orientation affect solar panel output?

Ideally, your roof allows panels to face north, west, or east. Since south-facing panels receive less sun exposure in Australia, they are generally not recommended.

If facing panels on an orientation other than North, the output of your system will be reduced according to the multiple below:

North 1
West 0.85
East 0.85
South 0.62