To get the best out of your photovoltaic panels you need to angle them towards the sun.
Solar panel inclination calculator.
For this calculator latitude is positive to the north and longitude is positive to the west of the prime meridian.
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.
Solar panel tilt calculator this calculator will help you determine the optimum tilt for your solar panel based on your latitude.
At this level the solar panel can lie flat on the roof and get enough sunlight to produce enough electricity.
Tilt degrees are expressed as the angle from horizontal.
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.
Most roofs have an inclination of 30 to 40 degrees.
Solar panels should point south in the northern hemisphere and point north in the southern hemisphere.
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.