Material selection
Steel bracket
Advantages: High strength (bearing capacity more than 1.4 times that of aluminum alloy), excellent wind and snow load resistance, good economy, suitable for large-span or strong wind areas.
Anti corrosion requirements: Hot dip galvanizing treatment (thickness ≥ 65 μ m) is required, with a lifespan of up to 20 years, but regular maintenance is required; Recommended for coastal areas is zinc magnesium aluminum steel (resistant to salt spray corrosion).
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Aluminum alloy bracket
Advantages: Lightweight (weighing 35% of steel), corrosion-resistant (naturally protected by anodized film), easy to install, suitable for rooftop power stations and corrosive environments.
Limitations: Low strength, requiring an increase in material usage to cope with high load scenarios, with a cost of 1.3 to 1.5 times that of steel supports.
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Composite materials and stainless steel
Composite materials: Strong corrosion resistance, but limited load-bearing capacity, suitable for specific light load scenarios.
Stainless steel (such as 304): high cost but resistant to extreme environments, suitable for harsh climate areas.

Structural type adaptation
‌Fixed bracket
Applicability: Easy to install, low cost, suitable for roofs (color steel plates/flat roofs), flat floors, and areas with stable lighting angles.
Subdivision types: single column, double column (ground), floating (water surface), etc.
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Adjustable/Tracking Bracket
Advantage: Improve power generation efficiency through angle adjustment (single axis tracking can increase power generation by 15% to 25%).
Applicable scenarios: Complex terrain areas (such as mountain slopes) or large power plants that require maximum light utilization.

Installation environment matching
‌Terrain and Geology
Flat ground: Conventional fixed brackets or prefabricated pile foundations (fast construction, low cost).
Complex terrain (slopes/hills): requires adjustable supports or pile foundation reinforcement (such as cement foundations to prevent settlement).
Soft soil/wetland: Priority should be given to hammer in piles or floating supports.
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Climate conditions
High wind pressure/snow area: Choose steel supports (wind resistance load ≥ 0.6kN/m ², snow load ≥ 0.5kN/m ²).
High humidity/high salt environment: Aluminum alloy or zinc magnesium aluminum steel bracket (anti-corrosion performance is preferred).

Key performance parameters
Carrying capacity
Component weight: Must meet ≥ 20kg/m ² (single crystal/polycrystalline components).
Wind/snow load: Calculated based on meteorological data, the design value needs to reserve a safety margin of 20% to 30%.
Heat dissipation and deformation control

Profile design: Optimize layout to enhance air circulation and reduce component operating temperature.
Deflection control: The deformation of steel is only one-third of that of aluminum alloy, and it is preferred for large-span scenarios.

Cost and maintenance balance
‌Initial cost
Steel bracket: High cost-effectiveness, suitable for budget limited or large-scale projects.
Aluminum alloy: The cost of small span roof projects is close to that of steel brackets, and it saves installation time.
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Long term maintenance
Steel bracket: Regular inspection of the corrosion of the galvanized layer is required (every 2 years in coastal areas).
Aluminum alloy: basically maintenance free, with potentially lower lifecycle costs.