The world's energy demand will increase year by year and we have to search for alternative energy resources. New concepts concerning the energy production from geo-resources have to be provided and developed. The joint project GeoEn combines research on the four core themes Geothermal Energy, Shale Gas, CO2 Capture and Utilization and CO2 Storage. The research is carried out in the federal state Brandenburg in Germany where all project partners Helmholtz Centre Potsdam, University of Potsdam, Brandenburg University of Technology - and the infrastructures Schwarze Pumpe, Ketzin, Gross Schonebeck - are located. (C) 2013 The Authors. Published by Elsevier Ltd.