Solar panels are typically held in place by solar mounting systems or solar racking structures. The mounting systems provide the necessary stability and support to keep the solar panels securely fixed to the roof or the ground. The choice of mounting system depends on the installation location, such as a roof, ground, or specialized structures like carports or trackers.

For rooftop installations, there are different types of mounting systems available, including:

1. Roof mounts: These are commonly used for residential installations and are designed to attach the solar panels directly to the roof surface. They use brackets, rails, and clamps to secure the panels in place.

2. Ballasted mounts: These are often used for flat roofs where penetration through the roof surface is not desired. Ballasted mounts use weights or concrete blocks to hold the solar panels in place without penetrating the roof.

3. Flush mounts: These are low-profile mounting systems that allow the solar panels to be installed parallel to the roof surface, providing a sleek, integrated appearance.

4. Ground mounts: When installing solar panels on the ground, a ground mounting system is used. These systems typically use frames or poles to support the solar panels at an optimal tilt angle for maximum sunlight exposure.

In all cases, the mounting systems are designed to ensure the solar panels are securely fastened and can withstand various weather conditions, such as wind loads and snow loads. It's important to follow proper installation guidelines and, if in doubt, consult a professional installer to ensure the solar panels are held in place correctly.

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