Solomon Abebe Asfaw, PhD, received his undergraduate degree in Physics from Bahir Dar University, Ethiopia; M.Sc. in Physics from Norwegian University of Science and Technology, Norway; and another M.Sc. and a PhD, both in energy system modeling from Ben-Gurion University of the Negev, Israel. He was a recipient of the 2010 Wolf foundation prize for outstanding PhD students in Israeli Universities. He was a postdoctoral researcher at the University of California-Berkeley, supported by a fellowship grant from Philomathia foundation. Then, he moved to Addis Ababa University (AAU), where he worked as an Assistant Professor of Energy Systems and the head Center of Energy Technology. Currently, he is a senior postdoctoral researcher at Lappeenranta University of Technology, Finland. His research interest is in the area of future energy system. The key questions of his interests are (i) design and operation of the future energy system; as well as (ii) sustainability of the energy transition. Specifically he deals with the challenge of variable renewable energy (VRE) integration and energy storage. He also explores biophysical limits to our aspired energy transition. His findings, which covers various aspect of future power system design,- including power system dispatch, least cost generation and transmission planning, issues of storage design and dispatch, curtailment-penetration-storage nexus, etcetra, (which also covers different regions of the worlds) are published in various journals and as a part of books.