Constantine (Costas) Vournas is Professor Emeritus in the School of Electrical and Computer Engineering of National Technical University of Athens, Greece. He has published close to 200 papers in International Journals and Conferences and has co-authored the book “Voltage Stability of Electric Power Systems”. His research interests are in the area of power system dynamics, stability and control and include voltage stability monitoring and security analysis, renewable generation integration in power systems, and novel control applications for distribution and transmission systems. Fellow of IEEE (2005) and member of CIGRE. He received the IEEE/PES Prabha Kundur Award in 2019. He served as Region 8 Representative on the IEEE Power and Energy Society (PES) Governing Board (2011-2014). He is currently Chair of PES Greece Chapter, Past Chair of IEEE/PES Power Tech Steering Committee (2007-2019), and Chair of the IEEE/PES Power Systems Dynamic Performance Committee. Since 2021 he is Chairing the Energy WG of the IEEE European Public Policy Committee (EPPC) and is member of EPPC. From 2024 he serves as the Secretary of the Technical Council of IEEE PES.