Placement and orientation are very important in determining the amount of electricity that your array will produce. Rooftop installations are by far the most common type of installation and are affected less by shading from trees and other buildings. By being directly above your roof, the solar array will also shade your house making it slightly cooler during the summer months. It’s a win/win situation for saving energy. Although New Day Solar does install ground mounted systems, most homes don’t have the required square footage of non-shaded open land to support a solar electric system. However, if you do have the space available, ground mounted systems give you the ability to increase the size of the system that you install and provides an alternative if you prefer to avoid roof top penetrations.
In most cases, south facing modules tend to be the most efficient for the area of Southern California. However, climatic conditions may contribute to efficiency as well. For instance, modules are more productive when facing slightly westward along the coast due to early morning fog and desert regions may require a slightly eastern direction, in order to keep modules cooler during peak output. Therefore, microclimates should be considered when choosing the direction that your solar modules will be installed. However, the difference is minute and thus should not dramatically affect the efficiency. If the direction which provides the maximum efficiency cannot be obtained, we will gladly find the next best placement for your modules.
Your specific roof tilt, size and direction will also need to be considered accordingly at your consultation. Flat roofs will require tilted racking in order to improve production and decrease soiling of the module.