There are two methods for calculating the tilt angle for solar panels.
General tilt angle solar panels.
Tilt the panels to your latitude plus 15.
Tilt the panels to your latitude.
The decision of azimuth.
The tilt is included angle of horizon and solar panel.
When a solar system is level with the ground it has no tilt.
Whether you are installing a solar panel on a flat roof or a pitched roof the output of the solar pv system would be increased by optimizing the tilt angle.
Similarly you can calculate the angle for winter by adding 15.
Whatever your latitude is you can subtract 15 from it to calculate the angle for summer.
Tilt the panels to your latitude.
Solar panel angle is another way of describing the vertical tilt of your pv system.
If it s standing upright perpendicular to the ground it is at a 90 angle.
A flat roof has a 0 degree tilt and a vertical wall mount has a 90 degree tilt angle.
The solar panel angle can affect the amount of solar electricity you generate and is based on two factors.
The array s tilt is the angle in degrees from horizontal.
The tilt is 0 if solar panel parallel to horizon to design the tilt is 90 if the solar panel is vertical to design.
The optimum tilt angle is calculated by adding 15 degrees to your latitude during winter and subtracting 15 degrees from your latitude during summer.
For instance if your latitude is 34 the optimum tilt angle for your solar panels during winter will be 34 15 49.
Both of these angles require latitude degrees.
The summer optimum tilt angle on the other hand will be 34 15 19.