Mounting System Considerations
- Shadow Minimization: The mounting system should be designed to minimize shadows on the rear side of bifacial panels. Systems like Sun Ballast use reduced contact surfaces and adjustable row spacing to ensure the back of the panel remains unobstructed, allowing for maximum light capture.
- Elevation and Clearance: Elevated mounting systems increase ground clearance, enabling bifacial panels to capture more reflected light from below. This is especially beneficial in environments with high albedo values (e.g., light-colored surfaces like sand or snow).
- Alignment and Spacing: Proper alignment and adequate spacing between panels are crucial to prevent panel shading. This ensures that each panel receives maximum sunlight while maintaining sufficient airflow for cooling.
- Structural Features: Mounting systems often use narrower support rails and smaller junction boxes to further reduce shading on the back of bifacial panels. Vertical supports at the corners can also help in maintaining structural integrity while minimizing obstruction.
- Flexibility in Installation: Systems that allow for variable heights and inclinations, such as those from Sun Ballast, provide flexibility in installation, which is important for optimizing energy capture on different surfaces and under varying environmental conditions.
Performance Impact
- Efficiency Gain: By capturing sunlight from both sides, bifacial panels generally produce 10-25% more energy than traditional monofacial panels, depending on the mounting system’s efficiency and site conditions.
- Environmental Dependence: The effectiveness of bifacial panels is highly dependent on the installation environment. High albedo surfaces can significantly increase energy output by reflecting more light.
Overall, selecting the right mounting system for bifacial solar panels can enhance their energy generation potential by optimizing light exposure and reducing obstructions.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-can-the-choice-of-mounting-system-affect-the-performance-of-bifacial-solar-panels/
