Roland Span studied mechanical engineering at Ruhr-University Bochum (RUB) from 1983 to 1988. In 1992, he completed his Ph.D. with a thesis introducing a new reference equation of state for carbon dioxide, which is since then considered the international standard for thermodynamic properties of carbon dioxide. His work was supervised by Prof. W. Wagner. In 1999, he completed his habilitation with a thesis entitled “Multiparameter Equations of State – An Accurate Source of Thermodynamic Property Data”. At ALSTOM Power Technologies in Switzerland, he worked on gasturbine related topics, including humidified gasturbines and CCS. In 2002, he became chair of Thermodynamics and Energy Technologies at University of Paderborn. In 2006, he changed to RUB, where he is chair of Thermodynamics, leading an institute with about 15 scientific coworkers and 15 student coworkers. Prof. Span has published numerous journal articles and monographs, including highly cited scientific papers dealing mostly with experimental and theoretical work on thermodynamic properties and the application of corresponding models to process simulations in energy technologies. Prof. Span and his scientific coworkers received several national and international awards; the most recent ones are the NTNU & SINTEF CCS Award 2019 and an ERC Advanced Grant in 2022. Prof. Span is member of several scientific committees, including editorial boards, advisory boards in energy technology, and working groups of international unions. In the management board of the JP CCS of the European Energy Research Alliance, Prof. Span is coordinating activities on CO2 transport. He is speaker of the interdisciplinary Research Department Closed Carbon Cycle Economy (RD CCCE) at RUB and of the doctoral school DS CCCE. He is member of the European Academy of Sciences and Arts, curator of the Fraunhofer UMSICHT institute, and chair of the International Advisory Board of the Institute of Thermomechanics of the Czech Academy of Science.