Quick Answer
Ground-mounted arrays can perform well in high winds, but the design and installation must consider wind loads and structural integrity to ensure optimal performance and durability.
Wind Load Considerations
Ground-mounted arrays are designed to withstand various environmental conditions, including high winds. The American Society of Civil Engineers (ASCE) recommends a minimum wind load of 100 mph (161 kph) for solar panel installations in areas with high wind exposure. To account for wind loads, ground-mounted arrays are typically secured to the ground with deep foundation systems, such as helical piles or concrete piers, to prevent uplift and ensure stability.
Array Design and Orientation
The orientation of the solar panel array also plays a crucial role in withstanding high winds. A northwest-southeast orientation can help reduce wind loads by minimizing the panel’s exposure to direct wind blows. Array designers can also use computer-aided design (CAD) software to simulate wind loads and optimize the array’s design for specific wind conditions.
Installation Techniques
Installation techniques, such as using ballast weights or reinforced anchors, can help secure the ground-mounted array to the ground and prevent uplift during high winds. For example, using ballast weights can provide an additional 1,000-2,000 pounds (4,500-9,000 kg) of downward force on the array, ensuring it remains secure in windy conditions. Installation companies should consider using certified engineers and contractors to ensure that the array is designed and installed to withstand the local wind conditions.
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