Roof Orientation For Solar Panels

If the roof is not a feasible location panels and arrays may be mounted on other structures such as garages carports or sheds or ground mounted racks.

Roof orientation for solar panels.

The sun s movements throughout the day. Your solar panel installers can help determine if your roof slope is suitable for solar panel installation. Regardless of the orientation experts note that it is more efficient to have a consecutive block of solar panels installed using the same orientation either vertical or horizontal. Therefore directions like southwest or southeast are fine.

Why orientation matters with rooftop solar. But what if you don t have a suitable south facing roof. While the angle of your solar panels is important a more important factor in your energy production is going to be the direction your panels face. Go west young one.

Since residential solar s infancy just two decades ago conventional wisdom has dictated that the panels face true south since that orientation is thought to provide them with the maximum possible sun exposure throughout the day. The amount of energy each solar panel produces will be directly reduced by the amount of shade covering each panel so less shade is always better. Orientation of the panels. The solar assessor shall identify the orientation azimuth of the proposed array location and show the orientation on the site and roof plans.

The size of solar panels makes them well suited to be installed vertically on most roofs. In the northern hemisphere the sun crosses the sky a little to the south which means putting solar panels on a south facing roof is the best way for homeowners to capture the most solar energy. Even with this decrease in performance solar panels will produce enough electricity to save you hundreds of dollars a year. But not everyone has a perfectly oriented roof.

As we have mentioned before in the southern hemisphere due north is usually the best orientation for panels. A roof slope that angles between 15 40 degrees should suffice for most solar power systems. This is because the sun is always in the southern half of the sky in the northern hemisphere. For the best results solar panels should be oriented towards the south.

South is best west works well too and a mix is ok too. Solar panels should face south for any home in america to obtain maximum power generation. Panels mounted on a standard pitch roof facing east or west will produce approximately 15 less output than panels mounted on a south facing roof of a standard pitch. In summary here are the roof factors that affect your home solar panel performance.

When your two best options are east or west which should you choose. The amount of sunlight the roof gets could also impact the direction in which they are placed. In general solar panels that are oriented directly east or directly west will produce about 20 percent less electricity than if they were facing south.