de Colombia Sede Manizales, Campus La Nubia.4th edition of PEPQA takes places in the end of the second decade on the XXI Century as a principal conference in power electronics and power quality.Attendances of PEPQA have allowed eight paper sessions, two tutorials, four international keynotes, and 2 special sessions from international experts in industry applications.Covered topics are a meditation of the changes that are carrying out in the power electronic and power quality and the increased intensity of research activity of the people involved.This allows PEPQA to be an open space for professionals, students and researches to present their work and share experiences.Keynotes of PEPQA offer a discussion on the need to produce and deliver high quality electrical energy through the improvements of power electronics and to design from a power quality perspective, aiming to close the gap between technology and research from an industry application point of view.Tutorials provide a learning environment with methodologies that attendees can use in power systems protection, grounding, and power quality solutions.Special care has been given to the scientific sessions by limiting them to an average of about four papers per session to allow an active discussion with the researchers and the possibility for authors to share a poster session.For last, attendants are encouraged to meet the coffee culture through our closure event.