The best structure for solar panels depends on various factors, including the available space, orientation, and shading conditions. Here are a few common structures for solar panel installation:

1. Rooftop : Roof solar panels installation structure is a popular choice for residential and commercial buildings. It utilizes the existing roof space, minimizing additional land requirements. The slope and orientation of the roof should be suitable for optimal sunlight exposure.

2. Ground-mounted: Ground-mounted solar panel systems are installed on the ground using structures like racks or poles. This option is suitable for larger installations or when there is limited roof space available. Ground-mounted systems offer flexibility in terms of orientation and tilt angle adjustments for maximum energy production.

3. Carports and canopies: Solar panels can also be integrated into carports or canopies, providing both shade for parked vehicles and generating renewable energy. These structures are commonly used in parking lots or open spaces, offering dual functionality and maximizing land utilization.

4. Floating solar: In certain cases, solar panels can be installed on water bodies, such as lakes, ponds, or reservoirs. Floating solar systems utilize floating structures to support the panels, taking advantage of underutilized water surfaces. This option can be beneficial in terms of energy generation and reducing water evaporation.

It's important to consider site-specific factors, such as available space, budget, local regulations, and energy requirements when determining the best structure for solar panels. Consulting with a solar professional or installer can help assess the most suitable option for a specific situation.