is basically about two things--
- keeping your harvestable area from being shaded from 9A to 3P, and
- orienting your array for production.
The numbers below represent percentage harvested vs percentage available of total insolation--so a flat array for example, harvests 89% of the energy an array tilted at latitude would achieve.
Tilting the modules needs to be balanced with the amount of the area you are losing to shade from the tilted arrays. The angle on this model represents latitude--which for us in NorCal is 37 degrees or a 9:12 pitch, or a 7:12 pitch for our amigos in Southern California.
