In the Sun, hydrogen atoms are converted into helium by nuclear fusion, releasing a large amount of energy. A solar cell is a semiconductor device that converts solar energy into electricity. When exposed to light, electricity is generated between the semiconductors. The intensity of solar radiation is defined in comparison with the emission of an ideal black body at a temperature of 5900 K. The beginnings of using solar energy date back to the to the Middle Ages. Leonardo da Vinci installed concave mirrors that were used to direct solar radiation and heat water. He wanted to prevent the destruction of forests, which were the main fuel at the time. Modern civilization needs energy to be able to perform daily activities. The implementation of the smart grid improves the existing power system. Modernization affects the process of production, transmission and distribution of electricity. The idea of connecting an electric charging station with a solar system opens up new possibilities. KNX is the world standard for automation, which can be easily and quickly managed by all types of electrical consumers. KNX technology is characterized by efficiency, economy and safety. The implementation of the KNX system at electric charging stations improves the efficiency of vehicle charging and contributes to overall energy efficiency. This integration of technologies lays the foundation for the future of smart cities and buildings that support electric mobility.