A ballast roof is a method of installing solar energy systems on the roof of a building, which has the following benefits:

1. Make full use of space: A ballast roof can utilize the roof space of the building itself by installing solar panels or photovoltaic modules on the roof, making full use of the available roof area and avoiding the need for additional ground occupation.

2. Increase solar power generation: Roofs are usually a relatively open area that can receive more sunlight. By installing solar energy systems on rooftops, we can maximize the use of sunlight, increase solar power generation, and enhance the potential for energy generation.

3. Protecting buildings: A ballast roof can serve to protect buildings by providing an additional layer of protection for the roof, reducing damage from sun and rain, and extending the service life of the roof.

4. Energy cost savings: Installing a ballast roof with solar energy systems can provide renewable energy for buildings, reduce reliance on traditional energy sources, lower energy consumption and costs, and achieve energy conservation and economic benefits.

5. Environmental sustainability: Solar energy is a clean and renewable source of energy. By installing solar systems on rooftops, the use of fossil fuels can be reduced, greenhouse gas emissions can be lowered, and it is environmentally friendly and in line with the concept of sustainable development.

In summary, the benefits of a ballast roof include fully utilizing space, increasing solar power generation, protecting buildings, saving energy costs, and being environmentally sustainable. This makes ballast roofs a popular way of installing solar energy systems