Apart from how much power each panel can produce how many panels you ll need what size and how well they ll work with your rooftop you ll also want to consider the best direction for solar panels to face.
Which direction solar panels face uk.
Installing panels that face north is not recommended since it results in the lowest electricity output.
In northern hemisphere most solar panels point south.
On the other hand west facing panels are more productive in the afternoon since the sun sets in that direction.
Or elsewhere in the northern hemisphere the best direction for solar panels to face is true south though there is an exception.
If your roof does not face the right direction then surface mounted panels or pole mounted panels may be your best bet.
You could even stick a stick in the ground and take note.
If even one panel is shaded it will reduce the output of all your panels unless you invest in micro inverters or other optimizing devices.
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.
The more sunlight reaches your solar panels the more electricity you can generate and the more money you ll be able to save on your electric bill.
Since the sun rises in the east solar panels facing in that direction are more productive in the morning.
Solar panel orientation and elevation.
As you might have guessed the direction your panels face can be a major factor in how much energy your rooftop solar system produces.
For example a solar panel placed flat onto a west facing wall will produce about half the amount of electricity compared to being placed at a 30 degree angle on a south facing roof.
The most optimum direction to face your solar panels is somewhere between south and west.
In general there s one big rule.
But west facing panels are able to generate more even flow of electricity.
This is the direction your solar panels should face.
On the other hand if you live in the southern hemisphere you can use this same technique.
So we ve established that there s a sweet spot for your solar panel orientation which is directly south and a sweet spot for elevation which is between 30º and 40º.
If you re in the u s.
While the angle of your solar panels is important a more important factor in your energy production is going to be the direction your panels face.
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.
However you would want to face your solar panels in the opposite direction of where your shadows face.
Most solar panels are facing the wrong direction say scientists.
It is at this location that your panels will receive the maximum sunlight throughout the day.
For the best results solar panels should be oriented towards the south.
