**1. Introduction**

This editorial analyzes the manuscripts accepted, after a careful peer-reviewed process, for the Special Issue "DC & Hybrid Microgrids" of *Applied Sciences*. The Special Issue has been co-organized by the University of Pisa (Full Professors Sergio Saponara and Roberto Saletti at the Department of Information Engineering), Italy and Østfold University College (Full Professor Lucina Mihet-Popa at the School of Engineering) in Norway.

The nine accepted manuscripts were co-authored by research groups from three continents, consisting of authors from Norway, Denmark, Italy in Europe; India, China, Japan, Vietnam in Asia; and the USA in North America.

As reported in Section 2 of this editorial, the selected papers give an overview of the trends in research and development activities about direct current (DC) and hybrid microgrids. By exploiting the opportunities offered by the use of renewable energy sources, battery energy storage systems, power converters, and innovative control and energy management strategies, new scenarios are opened with the opportunity for industrial exploitation.
