Rooftop System

A rooftop system is a photovoltaic system that is mounted directly on an existing roof. It is the most common type of solar power generation and is used for both new constructions and retrofitting existing buildings.

How it works:

Solar modules are attached to the roof and convert incoming sunlight directly into electrical direct current. This direct current is then fed into an inverter, which converts it into alternating current suitable for the public electricity grid. The generated electricity can either be used on-site or fed into the public grid.

Advantages:

  • Flexibility: Rooftop systems can be installed on almost any roof type, regardless of the roof pitch or orientation.
  • Quick Installation: The installation of a rooftop system is generally straightforward and can be carried out relatively quickly.
  • High Economic Efficiency: By utilizing the available roof area potential and government subsidy programs, a rooftop system is a worthwhile investment.
  • Modularity: The capacity of a rooftop system can be individually adjusted to meet demand, as the number of solar modules can be flexibly chosen.

Disadvantages:

  • Aesthetics: The visible installation of solar modules can affect the appearance of the building.
  • Roof Load: The additional load from the solar modules must be considered during planning, especially for older roofs.
  • Shading: Shadows from trees, chimneys, or other buildings can impair the system's yield.

Optimization:

To achieve the maximum yield from a rooftop system, the following factors should be considered:

  • Orientation: The solar modules should ideally be oriented towards the south.
  • Angle of Inclination: The optimal angle of inclination depends on the location and typically ranges between 30° and 45° in Central Europe.
  • Shading: Shading should be avoided as much as possible.
  • Quality of Components: High-quality solar modules and inverters ensure a long lifespan and high efficiency.

Conclusion:

Rooftop systems are a proven and efficient way to utilize self-generated solar power and contribute to environmental protection. With careful planning and professional installation, a long lifespan and high yield can be ensured.

Additional Keywords: Photovoltaics, Solar Modules, Inverter, Self-consumption, Feed-in, Roof Pitch, Orientation, Shading