Solar
Solar Energy Racking & Mounting Systems
Structural Steel for Utility-Scale & Commercial Solar Installations
The rapid expansion of utility-scale and commercial solar energy has made steel one of the most critical materials in the renewable energy supply chain. From ground-mounted solar farms spanning thousands of acres to rooftop and carport installations, solar racking and mounting systems rely on flat-rolled steel that delivers structural strength, dimensional consistency, and long-term corrosion resistance over decades of outdoor exposure.
MST Steel supplies precision-processed steel sheets and coils that form the backbone of solar racking, tracker, and mounting assemblies—supporting manufacturers who demand reliable supply, tight tolerances, and coatings engineered for 25+ year service life.
Solar Racking & Mounting Overview
Solar mounting systems are designed to support photovoltaic (PV) panels while resisting wind loads, snow loads, thermal expansion, and corrosive environments. These systems typically fall into several high-tonnage component categories:
Primary Solar Steel Components
Each of these components is commonly produced through roll forming, tube forming, stamping, or fabrication—processes that demand consistent mechanical properties and coating integrity from the incoming steel.
Solar Energy Racking & Mounting Systems Applications
- Ground Mount Piles & Structural Posts
- Solar Racking Rails & Cross Members
- Torque Tubes & Tracker System Components
- Secondary Solar Mounting & Connection Hardware
High-Load Foundations for Utility-Scale Solar
Ground mount piles carry the full structural load of solar arrays and trackers. These components are typically roll-formed or fabricated from heavier-gauge structural steel and installed directly into soil, often without additional corrosion protection after forming.
Performance Requirements
- High tensile and yield strength for wind and snow loads
- Excellent coating adhesion and thickness for buried or near-grade exposure
- Long-term resistance to moisture, soil chemistry, and environmental corrosion
MST Steel Solutions
- Hot-Dipped Galvanized Steel (G90, G115, G235 coatings)
- Galvannealed Structural Steel
- Structural grades meeting ASTM A653 requirements
- Coil and sheet formats suitable for roll forming and pile production
Precision-Formed Framing Systems
Racking rails and cross members form the modular framework that supports solar panels across large arrays. These components require tight dimensional control to ensure fast installation and proper panel alignment.
Typical Components
- Main racking rails
- Horizontal girts and purlins
- Adjustable mounting channels
Performance Requirements
- Consistent strength across long production runs
- Uniform zinc coatings for cut-edge protection
- Flatness and gauge control for roll forming efficiency
MST Steel Solutions
- Hot-Dipped Galvanized Structural Steel
- Galvannealed Steel for improved weldability
- Custom slit widths optimized for racking profiles
- Reliable coil quality to minimize downtime in high-speed roll forming
Structural Steel for Single-Axis Solar Trackers
Single-axis tracking systems significantly increase energy output but place higher demands on steel performance. Torque tubes and tracker beams must resist bending, torsion, and fatigue while operating continuously in outdoor environments.
Typical Components
- Torque tubes
- Tracker beams and arms
- Bearing housings and support brackets
Performance Requirements
- High-tensile structural steel for rotational loads
- Excellent coating durability under constant motion
- Predictable mechanical properties for automated assembly
MST Steel Solutions
- High-Strength Hot-Dipped Galvanized Steel
- Galvannealed Steel for welded tracker assemblies
- Structural grades aligned with tracker OEM specifications
- Coils supplied for tube forming, roll forming, and fabricated assemblies
Brackets, Clips, and Structural Interfaces
Beyond primary framing, solar systems rely on thousands of smaller steel components that connect modules, rails, and foundations.
Typical Components
- Module mounting clips
- Rail-to-post brackets
- Gussets and reinforcement plates
- Adjustment and leveling hardware
MST Steel Solutions
- Cold Rolled Steel for precision-stamped brackets
- Electro-Galvanized Steel where tighter tolerances and smoother surfaces are required
- Galvannealed Steel for parts requiring post-forming welding
- Sheet and coil options matched to stamping and fabrication workflows
Steel Grades & Coatings for Solar Applications
MST Steel supplies flat-rolled products commonly specified for solar energy systems, including:
Commercial to structural grades with heavy zinc coatings (G90–G235) for outdoor durability
Structural grades offering excellent weldability and paint or powder-coat adhesion
Available in custom gauges, widths, sheets, and slit coils to support solar manufacturers’ exact forming and fabrication requirements.
Why Solar Manufacturers Choose MST Steel
Flat-Rolled Inventory Designed for High-Tonnage Programs
Structural Steel Grades Aligned with Solar OEM Specifications
Heavy Zinc Coatings Engineered for 25+ Year Outdoor Exposure
Consistent Coil Quality for Roll Forming & Tube Production
Sheets and Coils Ready for Scalable, Utility-Scale Manufacturing
Steel by Specification
The Strength Behind Sustainable Energy Infrastructure
From ground mount piles and racking rails to torque tubes and tracker assemblies, MST Steel provides the structural steel foundation behind today’s rapidly expanding solar energy infrastructure.
