Contact E-MAIL stefan.mellahn@prognos.com Phone +49 30 5200 59 230 Address Goethestraße 85 | 10623 Berlin Stefan Mellahn (born 1977, a graduate industrial engineer) has been working at Prognos in Berlin since 2006. His work focuses on advising politicians and companies on the future development of the gas and heating markets at regional, national and international level. In addition, Mr Mellahn concerns himself intensively with German and European grid development planning, in particular the network development plan for gas. About us Prognos – Providing Orientation. Prognos is one of the oldest economic research centres in Europe. Founded at the University of Basel, Prognos experts have been conducting research for a wide range of clients from the public and private sectors since 1959 – politically independent, scientifically sound. Learn more