Solar Tube

A solar torque tube is a fundamental structural component in large-scale utility solar power plants, specifically those utilizing single-axis tracking systems.

The primary function of the torque tube is to act as the rotating spine that supports and drives an entire row of solar photovoltaic (PV) modules.

• Support: It bears the massive dead weight of the solar panels and must withstand dynamic loads from wind and snow.
• Rotation (Torque): The tube is connected to a central actuator or motor which applies torque, causing the entire row of panels to rotate precisely along a single axis. This rotation allows the panels to continuously track the sun's path from east to west throughout the day.

Torque tubes are typically made of galvanized or structural steel to ensure high stiffness and minimal deflection. Their design is optimized for torsional rigidity, as any twist along the length of the tube compromises the alignment of the panels, which directly reduces energy yield. The structural integrity and precision of the torque tube are thus critical determinants of the solar farm's efficiency and longevity.