This guide provides a detailed comparison between the two most common solar bracket materials: Q235 steel and aluminum alloy, to help you select the optimal solar support bracket for your project.
All the profiles used in our solar panel structure systems are made of S350-GD galvanized structural steel (from Zn 450 up to ZnMg 310 gr/m²), corrosion resistant, have a very low weight and have a high strength.
That's why unequal angle steel has become a backbone of photovoltaic (PV) support systems. With one leg longer than the other, this steel shape offers a unique mix of strength and flexibility, perfect for withstanding wind loads while keeping installation costs in check.
A modern 2026 Tier 1 residential solar panel weighs 41–62 lbs (18. 7 lbs per square foot (12–13 kg/m²). A complete rooftop array — panels plus aluminum rails plus brackets plus wiring — adds about 3–4 psf of distributed dead load.
Federal, state, and local incentives can reduce solar costs by 30-70%, making understanding available programs crucial for maximizing savings. The Investment Tax Credit provides a dollar-for-dollar reduction in federal taxes equal to 30% of your total solar investment through 2032.
Solar panels and all mounting hardware (frame, rails, etc. ) weight does not exceed five (5) pounds per square foot (psf) or 45 pounds (lbs) concentrated load at each point of attachment or support, with a maximum weight of two-hundred (200) lbs per framing member.