Tilt Mounting

What Is Tilt Mounting?

Tilt mounting refers to a mounting system that positions solar modules at a defined tilt angle on flat roofs or level open ground. The goal is to align the modules optimally towards the sun and maximise yield.

Typical Systems

System	Application	Tilt Angle
Aluminium frame	Flat roof	10—30°
Ballast system	Flat roof (no roof penetration)	10—15°
Ground-mount frame	Solar park	20—35°
Tracking system	Large ground-mounted systems	Variable

Optimal Tilt Angle

In Germany, the optimal tilt angle for maximum annual yield is approximately 30—35° with south-facing orientation. On flat roofs, a lower angle (10—15°) is often chosen to:

• Reduce self-shading between rows
• Fit more modules onto the available area
• Reduce wind loads

Spacing Between Module Rows

To avoid self-shading, tilted module rows must be sufficiently spaced apart. As a rule of thumb: the spacing should be at least 1.5 to 2 times the module height.

Practical Tip

On flat roofs, a lower tilt (10—15°) with more modules can be more economical than the optimal tilt with fewer modules. The yield difference between 15° and 30° is only about 5—8%.