What angle do the panels need to be tilted?
The latitude in our area is about 40 degrees and the optimal tilt would dictate 40 degrees as well. However, seasonal weather patterns also have an effect on solar production. Therefore, modules are optimally mounted at a 30 degree tilt to take advantage of the sun angle in the summer months as it is higher in the sky and the days are longer. Flat roof mounted systems are usually tilted on racks at 10 degrees in order to withstand heavy winds and prevent uplift.
