Solar rails are the backbone of most photovoltaic (PV) mounting systems. They’re the structural components that hold solar panels in place—usually on rooftops or ground-mounted arrays. But what exactly are they made of, and why does it matter?

Common Materials Used in Solar Rails

The performance, durability, and cost of a solar installation can be heavily influenced by the material used in the rail system. The most common materials include:

1. Aluminum

• Lightweight yet strong

• Corrosion-resistant

• Easy to transport and install

Aluminum is the most widely used material for solar rails due to its excellent balance of strength, weight, and longevity. It also performs well in harsh environments, including coastal or high-humidity regions.

2. Galvanized Steel

• Heavier and stronger than aluminum

• More cost-effective for large projects

• Requires proper coating to prevent rust

Hot-dip galvanized steel is often used for ground-mounted or utility-scale systems. While it’s not as light as aluminum, it provides strong load support at a lower material cost.

3. Stainless Steel (Occasionally)

• High resistance to corrosion

• Expensive

• Used selectively in high-risk environments

Though not common for full rail systems due to cost, stainless steel components may be used in connectors or brackets where extra durability is needed.

Why Material Matters

• Longevity: Solar panels can last 25+ years. Rails need to match that lifespan.

• Climate Adaptability: In coastal or high-wind zones, corrosion resistance and structural integrity are essential.

• Installation Speed: Lightweight materials like aluminum speed up the mounting process and reduce labor costs.

What SIC Solar Uses

SIC Solar, a manufacturer of solar mounting structures, primarily uses high-grade aluminum alloys for rail systems. Their products are engineered for fast assembly, long-term durability, and resistance to extreme weather. Whether it’s a rooftop, ground mount, or custom application, SIC Solar delivers reliable components built to last—without overengineering or unnecessary complexity.

Solar rails are more than just support—they’re a crucial part of a PV system’s safety and efficiency. Whether made from aluminum for lightweight rooftop installs or galvanized steel for larger-scale setups, the right material makes a big difference. And with experienced suppliers like SIC Solar, you’re getting proven quality from the ground up.