Installing a photovoltaic system is an important step towards a more sustainable energy supply. It allows you to convert solar energy into electricity, making it not only environmentally friendly but also cost-effective. This article will tell you everything you need to know about installing a photovoltaic system – from planning and installation to the advantages of such an investment.

What is a photovoltaic system?

A photovoltaic system converts sunlight into electricity. This is achieved through solar cells integrated into solar modules. These cells consist of semiconductor materials that absorb sunlight and convert it into electricity. The energy generated can either be used directly, stored in batteries, or fed into the public power grid. Photovoltaic systems offer an environmentally friendly way to generate energy and reduce dependence on fossil fuels.

Advantages of photovoltaic installation

Installing a photovoltaic system offers numerous advantages – both for the individual and for the environment:

  • Sustainability: Solar energy is a renewable energy source that produces no harmful emissions. It helps to reduce CO₂ emissions and protect the environment.
  • Cost savings: By using your own solar energy, you can significantly reduce your electricity costs. Excess electricity can even be fed into the public grid, which can lead to a feed-in tariff.
  • Independence: With a photovoltaic system, you are less dependent on fluctuations in electricity prices and on external electricity suppliers.
  • Increased property value: A building with a photovoltaic system is generally perceived as more energy-efficient and future-oriented, which can increase the property's value.
  • Durability and low maintenance: Photovoltaic systems are very durable and require little maintenance. With proper care, they can operate efficiently for over 20 years.

Steps for installing a photovoltaic system

Installing a photovoltaic system requires several steps to ensure that the system operates efficiently and delivers maximum benefit:

1. Planning and analysis

The first step in installing a photovoltaic system is thorough planning and analysis. This takes into account factors such as the building's location, the roof's orientation, its tilt, and the amount of sunlight it receives. It is crucial that the solar panels are optimally aligned to absorb the maximum amount of solar energy.

2. Component Selection

A photovoltaic system consists of several components, including the solar modules, the inverter (to convert the generated direct current into alternating current), and, if necessary, storage systems to store excess energy. When selecting the right components, efficiency, quality, and warranty conditions should be taken into account.

3. Permits and registrations

Before installation, the photovoltaic system may need to be registered with the relevant authorities. In many cases, a permit is required, especially if the system feeds into the public electricity grid. The grid operator must be informed, and a feed-in tariff agreement must be concluded.

4. Installation of the solar panels

Solar panels are typically installed on the roof of the building. They are mounted on a sturdy frame, oriented to maximize sunlight exposure. Proper installation is crucial to maximize the system's lifespan and ensure efficient operation.

5. Installation of the inverter and wiring

The inverter is installed near the electrical connection and converts the generated direct current (DC) into alternating current (AC), which can be used in the household or fed into the power grid. All cables and connections must be properly installed and fused to ensure a safe and efficient power supply.

6. Commissioning and testing

After installation, all components of the photovoltaic system are tested to ensure they are functioning correctly. The performance of the solar modules is checked, and adjustments are made if necessary to maximize the system's efficiency.

Maintenance and care of the photovoltaic system

Photovoltaic systems require little maintenance; however, regular inspections are important to ensure a long lifespan and high efficiency. Maintenance tasks include:

  • Cleaning the solar panels: Dust, dirt, or deposits can reduce the performance of solar panels. Regular cleaning ensures that the panels operate efficiently.
  • Checking the wiring and inverter: It is important to regularly check the wiring and inverter for possible defects or wear.
  • Monitoring performance data: The performance of the photovoltaic system should be monitored regularly to ensure that it delivers the expected yield.

Conclusion: Photovoltaic installation as an investment in the future

Installing a photovoltaic system is a forward-looking decision that not only helps reduce energy costs but also makes a significant contribution to environmental protection. With careful planning and proper installation, a photovoltaic system can reliably and efficiently supply electricity for many years. Investing in a photovoltaic system pays off in the long run by reducing energy consumption, increasing independence from external electricity providers, and lowering CO₂ emissions.

Referenced terms and sources

This existing glossary article was reviewed and approved on 14 October 2026. Time-sensitive information still refers to its original publication context unless the article states otherwise. It does not replace installation instructions or confirm compatibility with a particular roof tile model.

Machine-assisted translation. The German version remains available.

Data sheet and installation guideOriginal source