Quick Answer
Dual-axis tracking systems are more efficient, capable of increasing energy production by up to 45% compared to single-axis trackers, particularly in areas with varying sun angles throughout the day.
Advantages of Dual-Axis Tracking
Dual-axis tracking systems use two axes to rotate the solar panels, allowing them to track the sun’s movement in both azimuth and altitude. This results in more precise tracking and increased energy production. For example, a study by the National Renewable Energy Laboratory (NREL) showed that dual-axis tracking systems can increase energy production by up to 45% compared to single-axis trackers in areas with high sun angles, such as in the western United States.
Installation Considerations
The increased efficiency of dual-axis tracking systems comes at a higher upfront cost compared to single-axis trackers. However, the additional cost can be justified by the increased energy production. When installing a dual-axis tracking system, it’s essential to consider the site’s terrain, wind loads, and electrical requirements. A level surface and a sturdy foundation are necessary to support the weight and movement of the tracker. Additionally, the electrical system must be designed to handle the increased power output.
System Design and Configuration
When designing a dual-axis tracking system, it’s crucial to consider the system’s configuration, including the number of panels, the tracker’s size, and the control system. A larger tracker can increase energy production but may also increase the system’s cost and complexity. The control system should be able to accurately track the sun’s movement and adjust the tracker’s position accordingly. Some popular control systems for dual-axis tracking include the “SunEye” and “SunTrack” systems, which use sensors and algorithms to optimize energy production.
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