**1. Introduction**

At present, the general trend of evolution of society has as a catalyst, the technological revolution. Through the continuous development of information analysis and synthesis capabilities through cloud computing technologies, manufacturing capabilities through 3D printing, as well as local power generation and storage capabilities, the industry is experiencing a huge leap across multiple plans.

Also, at the social level, the need to improve the state of the environment, as a *sine qua non* condition of increasing the quality of life, is felt more and more. This pressure has generated mechanisms to control the sources of pollution, with the energy sector being one of the main actors in this respect. Thus, it can be said that energy efficiency is a vital resource for environmental protection.

Energy efficiency has gained a major significance in the design and implementation of national and transnational projects, due to the importance of concepts and measures resulting from the specific analysis of energy processes. From the perspective of environmental protection, the analogy that each consumed kWh leads to a reduction in carbon footprint by about 1 kg of CO2 is essential. Also, the concept of "negajouls" is increasingly being met as the measure of increasing energy efficiency defined by measuring unconsumed energy.

These requirements are driving next-generation engineers toward seamless communication with physical systems with the help of artificial intelligence, turning them into dialog enablers between future smart society and its fundamentally supporting technology.

Ensuring the power quality requires an entire investigation chain, from production, transport, distribution to the public network, and distribution to the user. The transfer of energy through this transformation chain cannot provide an ideal quality of the supplied energy. In this respect, the user, on the basis of careful technical and economic analysis, must accept the quality of the electricity provided by the public supply system (within acceptable risk limits) or adopt measures that require investment to achieve an accepted power quality level for the processes which take place at the end of production chain.
