What are Energy Loss Factors for Fixed vs. Tracker Mounts?

Energy Loss Factors for Fixed Mounts

Fixed solar mounts can experience significant energy losses due to shading. Shading from trees, buildings, or other obstructions can reduce energy generation by 10-30%. In areas with high tree density or urban settings, this loss can be even more pronounced. For example, a study in the US found that a 10% increase in shading can result in a 2.5% decrease in annual energy production.

Energy Loss Factors for Tracker Mounts

Tracker mounts, on the other hand, are designed to minimize shading losses. By following the sun’s trajectory, trackers can maintain optimal exposure to sunlight at all times. This results in a significant reduction in energy losses due to shading. In fact, studies have shown that tracker mounts can generate up to 25% more energy than fixed mounts in areas with moderate shading. To achieve optimal performance, trackers should be installed with a slight tilt to account for seasonal changes in the sun’s angle.

Tracker Mount Design Considerations

When designing a tracker mount system, it’s essential to consider the specific site conditions and sun path. This includes the latitude, local solar irradiance, and any shading obstructions. By taking these factors into account, you can optimize the tracker’s performance and reduce energy losses. For example, using a tracker with a single-axis design can achieve a 10% increase in energy production compared to a fixed mount. However, more advanced dual-axis trackers can achieve even higher gains, especially in areas with complex shading patterns.