How does mounting height impact the performance of flexible panels?

Understanding Angle of Incidence

When flexible panels are mounted too close to the ground, dirt, dust, and other debris can accumulate on the surface, reducing efficiency. To mitigate this, mount the panels at an angle to ensure water and debris can easily roll off. A minimum angle of 10 degrees is recommended to achieve this.

Effects of Shading and Sun Path

As the sun moves across the sky, its angle of incidence changes, affecting the amount of sunlight that reaches the panel. A higher mounting height can help to reduce shading from nearby objects, such as trees or buildings, by as much as 20-30%. A general rule of thumb is to mount panels at a height equal to 1-2 times the height of the surrounding obstacles.

Recommended Mounting Height and Orientation

For optimal performance, flexible panels should be mounted between 1 and 3 feet above the surrounding surface. A 2-foot mounting height is a good starting point, as it allows for easy cleaning and maintenance while minimizing shading and debris accumulation. For south-facing installations, a 0-15 degree tilt is recommended to ensure optimal energy production.