Quick Answer
Bifacial panels face unique mounting challenges due to their ability to absorb light from both the front and back sides, requiring careful consideration of panel angle, orientation, and spacing to maximize energy production.
Bifacial Panel Mounting Angle
Bifacial panels perform optimally when mounted at an angle, typically between 10 and 30 degrees, to allow for maximum sunlight absorption on both sides. However, this angle can be challenging to maintain, especially on uneven terrain. For example, a 15-degree angle requires precise leveling and adjustment to ensure optimal performance.
Bifacial Panel Spacing and Overhang
Proper spacing between bifacial panels and adequate overhang on racking systems are crucial to prevent shading and ensure efficient energy production. A general rule of thumb is to maintain a minimum of 1-2 inches (2.5-5 cm) between panels to prevent shading, and consider overhangs of 6-12 inches (15-30 cm) on racking systems to accommodate varying sunlight angles.
Bifacial Panel Tracking Systems
Bifacial panels are also well-suited for tracking systems, which adjust the panel angle throughout the day to follow the sun’s movement. For example, single-axis trackers can increase energy production by up to 25% compared to fixed-tilt systems, while dual-axis trackers can achieve even higher gains. However, tracking systems require more complex installation and maintenance, which must be carefully considered when planning a bifacial panel system.
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