Ralph Ripken is a Senior Consultant at E4tech, a strategic sustainable energy consultancy based in London and Lausanne. He has 7 years experience in the sustainability and renewable energy sector, in particular in bioenergy. Ralph has led techno-economic, feasibility and policy analyses and conducted landscape studies to provide strategic support to and inform investment and policy decisions of private and public organisations operating along various sustainable energy value chains. He has managed numerous bioenergy projects and has particular experience with sustainable energy projects in a development context with field experience in Africa and South America. He also has project experience related to low carbon transport, sustainable buildings, and the water-energy-nexus. He has obtained an MSc in Environmental Sciences, Policy and Management from Lund University, Central European University and Manchester University as well as a BSc in International Business from Reutlingen University, Germany and NEOMA Business School, France. Ralph speaks German, English, French and Spanish.