Equation For Fixed Solar Panel Tilt Angle

Various optimum tilt angle values were provided in the literature for fixed solar panels.

Equation for fixed solar panel tilt angle.

There are two methods for calculating the tilt angle for solar panels. Subtract 15 degrees from the latitude at your location during summer and add 15 degrees to your latitude during winter. For a precise method use the second formula on this page to calculate tilt angle. If your latitude is outside this range see other situationsbelow.

Tilt the panels to your latitude. For instance if your latitude is 34 the optimum tilt angle for your solar panels during winter will be 34 15 49. Tilt the panels to your latitude plus 15. The optimum tilt angle is calculated by adding 15 degrees to your latitude during winter and subtracting 15 degrees from your latitude during summer.

Tilt the panels to your latitude. Similarly you can calculate the angle for winter by adding 15. Both of these angles require latitude degrees. The summer optimum tilt angle on the other hand will be 34 15 19.

The tilt is 0 if solar panel parallel to horizon to design the tilt is 90 if the solar panel is vertical to design. For instance qiu and riffat suggested the tilt angle of the solar collector set within the optimum tilt angle of 10 as an acceptable practice. The tilt is included angle of horizon and solar panel. Tilt the panels to your latitude minus 15.

The decision of azimuth. If your latitude is between 25 and 50 then the best tilt angle for summer is the latitude times 0 93 minus 21 degrees. This table gives some examples. There s a simple rule of thumb for calculating the best tilt angle for fixed mount solar panels.