**About the Editors**

**Panagiotis Fragkos** is a manager and senior researcher in E3-Modelling. Dr. Panagiotis holds a Ph.D. from the National Technical University of Athens (NTUA), a M.Sc and a B.Sc. in Electrical and Energy Engineering. He is co-leading the development of energy-economy modelling tools, including Prometheus, MENA-EDS, and PRIMES-Gas. His main research areas include climate change and energy economics, energy systems modelling, risk and uncertainty and sustainable development. He has co-authored over 40 articles in peer-reviewed scientific journals.

**Pelopidas Siskos** has a great deal of experience in energy and transport projects in relation to their transition to low- and zero-carbon solutions. His experience also involves managing multi-disciplinary teams and developing and applying bespoke quantitative tools or complex models for strategic analysis. Some of his most important milestones involve his horizontal engagement in the quantitative analysis of all mobility- and energy-related initiatives of the EU Fit for 55 policy package. Pelopidas Siskos holds an engineering (BSc and MSc) degree from the School of Mechanical Engineering of NTUA and a PhD in energy economics. As part of his doctoral thesis, Pelopidas developed the PRIMES-TREMOVE, a large-scale energy economic model for the simulation of the transport sector. The model has been widely used as a tool for medium and long-term strategic planning and policy-making purposes for the EU, during the 2011–2021 time period. He is also a member of the Editorial Board of the journal *Energy Systems* (Springer).
