Quick Answer
Securing solar trackers against severe weather events involves anchoring them firmly to the ground, using reinforced construction materials, and designing for wind and snow loads.
Anchoring and Grounding
To prevent solar trackers from being overturned or damaged by high winds, anchor them to the ground using deep foundation systems such as helical piles or concrete piers. A minimum of 3-4 anchors are recommended for a single tracker unit, spaced 3-4 feet apart. This will ensure that the trackers remain stable even in extreme weather conditions.
Reinforced Construction Materials
Upgrading to reinforced construction materials such as stainless steel or aluminum can help protect solar trackers from corrosion and damage caused by severe weather. Reinforced frames and structural components can also increase the tracker’s wind resistance and durability. Consider using materials with a minimum thickness of 1/4 inch (6 mm) for structural components and 1/8 inch (3 mm) for non-structural components.
Designing for Wind and Snow Loads
When designing solar trackers, manufacturers must take into account local wind and snow loads to ensure that the trackers can withstand extreme weather conditions. This may involve using a higher wind speed rating (e.g., IEC 61646) and designing the tracker’s structural components to meet or exceed local building codes. A minimum snow load of 20 pounds per square foot (0.96 kN/m²) should be considered when designing trackers for areas with heavy snowfall.
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