This special section aims at addressing the way power electronics will help facing the big challenges arising in this upcoming paradigm, in terms of both power infrastructure (grid-related and converters architectures) and “intelligence” (supervision and control of AC-DC transmission and distribution systems), in order to keep current standards of efficiency and reliability. The call for papers invited original submissions dealing with a diversity of applications of power electronics in future power systems, with the emphasis placed preferably on the system-wide perspective. Out of a pool of 175 initial submissions, eleven papers coauthored by researchers from six different countries have successfully passed the double-blind, peer-review process and been finally accepted for publication. Taxonomically, the eleven papers accepted for this special section can be broadly classified in four groups: 1) Review papers; 2) Converter topologies; 3) Analysis and modeling issues; 4) Converter control schemes. To summarize, besides two review papers, this special section comprises two papers proposing novel converter topologies and a total of seven papers dealing with different power system applications. Those applications include fault detection and protection of HVDC systems, stability enhancement and control of grid-connected converters, including DC microgrids, power quality improvement and efficient operation of wind generators.