Solar panels should point south in the northern hemisphere and point north in the southern hemisphere.
Solar panel inclination calculator.
The violet line is the solar energy per day if the panel is fixed at the winter angle discussed below these figures are calculated for 40 latitude.
In the northern hemisphere solar pv panel must be south facing and in the southern hemisphere solar pv panel must be north facing the optimal angle for your solar panels varies throughout the year depending on the seasons and your location and this calculator shows the difference in sun height on a month by month basis.
In case the roof is very steep you may not be able to get the most optimal tilt angle for the panel especially if it is lower than the angle of the roof.
Tilt degrees are expressed as the angle from horizontal.
At this level the solar panel can lie flat on the roof and get enough sunlight to produce enough electricity.
Select a location from the city pulldown menu or select enter lat long from the pulldown menu and manually enter the latitude longitude and time zone information in the appropriate text boxes.
Most roofs have an inclination of 30 to 40 degrees.
Solar angle calculator this solar angle calculator tells you the optimum angle to get the best out of your system.
If your solar panels will have a fixed tilt angle and you want to get the most energy over the whole year then this section is for you.