Perth latitude 32º.
Optimum tilt angle for solar panels sydney.
However the panels can be installed anywhere between 10 to 35 deg with negligible efficiency loss.
Sydney latitude 34º.
To optimize overall production year round tilt your panels at your latitude.
Most australian homes have a roof pitch of 20 to 30 which is considered optimum for maximizing solar power generation.
To lean toward more production in the winter tilt your panels at your latitude plus 10 15.
For example if you reside in sydney a roof pitch of 34 would be considered ideal as this is equal to the latitude angle 33 86 of the nsw capital.
There are two methods for calculating the tilt angle for solar panels.
Generally speaking unless your roof is flat the pitch of your home s roof is going to be the angle your solar panels are mounted at.
To lean toward more production in the summer tilt your panels at your latitude minus 10 15.
This means that for best results the roof pitch of your property should ideally be equal to the latitude angle with the panels mounted at the same angle as the roof.
Similarly you can calculate the angle for winter by adding 15.
In every capital except darwin output is maximized when the solar panel tilt is at least a few degrees less than the latitude.
Both of these angles require latitude degrees.