Summary: Selecting the best bracket material for solar photovoltaic systems impacts durability, cost, and energy efficiency. This guide explores aluminum, steel, and composite options, backed by industry data and real-world examples, to help installers and project developers. When evaluating solar photovoltaic brackets, several essential factors must be considered to determine which one is superior. Which type of bracket to choose is generally considered from the anti-corrosion performance, price, wind and snow resistance and other requirements of these two brackets. As the foundational framework, or solar array frame, it must reliably secure your investment against decades of wind, snow, and seismic forces.