Climate change is the main challenge facing humanity in the 21st century, and CO2 emissions from industrial development and transport are the main cause of climate changes. One of the main components for reducing CO2 emissions and increasing competitiveness is to increase energy efficiency throughout the flow: production, transport, distribution and use. At the same time, increasing energy efficiency can be achieved in two main ways: Optimization of conversion and adaptation equipment that are part of the energy flow; Improving power quality so that each user operates with unity power factor. In this context, the purpose of this dedicated edition is to promote expertise in the field of innovative solutions for intelligent systems designed to increase energy efficiency by publishing significant achievements in the field. We would like to include articles that address issues related to: Increasing energy efficiency by Improve Power Quality (active filtering, power factor compensation etc.) and control optimization; Innovative and optimal solutions and structures of systems with high energy efficiency or leading to increasing energy efficiency; Implementation of high energetic performance structures and algorithms for controlling systems. There are no restrictions on addressing issues aimed at increasing energy efficiency. Authors are encouraged to submit the best papers on their own achievements. Work with experimental industrial or laboratory implementation is also encouraged. The key criteria for accepting the manuscript will be novelty, applicability and contribution to the field.
Keywords: distributed power generation; hybrid power system smart grid applications; energy management; renewable energy; energy storage; energy sources; grid management; power converters;  sizing; analysis;  modeling; control.