The supply of energy is one of the fundamental needs of all people. The standard of living in the highly developed countries of the world could only arise on a stable and efficient energy foundation. Without energy, industrial production is not possible; energy provides mobility, facilitates life, and is the foundation of its comforts. Globally, per capita energy consumption varies by two to three orders of magnitude, with corresponding impacts on living conditions. Reducing these disparities while using all available energy sources responsibly is not only a humanitarian task but also an existential one. Therefore, addressing energy issues will remain of paramount importance in the long term. The use of electrical energy has been increasing since the beginning of its large-scale utilization in the process.