This being the case the general best practice to date has always been to position solar panels facing south in order to capture the maximum amount of sunlight overall.
Installing solar panels facing south.
Generally it s common knowledge in the solar industry that these south facing panels should be tilted between a 30 and 40 degree angle.
In sydney south facing solar panels will typically produce around 28 less energy than north facing panels and the steeper the roof the less electricity they will produce.
The direction solar panels should face is true south a k a.
Solar south or geographic south.
The most optimum direction to face your solar panels is somewhere between south and west.
The conventional wisdom says no solar should never be installed on a south facing roof.
In other words to get the same amount of electricity as a south facing installation a west facing one would need to be 25 bigger.
But keep in mind every house is unique.
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.
For most australians south is the worst direction modules can face and some people consider installing panels facing south almost as large a mistake as installing them upside down.
Workers for solarcity installing solar panels in camarillo calif.
Updated may 18 2020.
Solar panels work best when they re directly facing the sun and the sun sheds the most light during the middle of the day when it s to the north of australia.
To correct the compass reading your solar installer will calculate the magnetic declination of your site.
Therefore directions like southwest or southeast are fine.
Net energy metering and time of use.
The optimum placement to maximise generation is to face the panels south but that might not be possible for your property.
The direction that your solar panels face is ultimately dependent on whether or not your system is connected through net energy metering nem and under a time of use tou payment structure.
If you have an unshaded west facing roof you can still install solar panels and save money.
Solar panels should face south for any home in america to obtain maximum power generation.
Since the majority of solar panel owners keep their system on the grid we can split this grouping into simply those who pay for energy based on a tou payment.
We ran a few calculations and found that se and sw facing placements can expect to generate around 94 of the electricity a south facing install would.
25 x 80 20.
It is at this location that your panels will receive the maximum sunlight throughout the day.
However solar panels can be orientated on any roof that faces south of either east or west.
