Its mandate is two-fold: to promote energy security amongst its member countries through collective response to physical disruptions in oil supply and to advise member countries on sound energy policy. This paper reflects the views of the IEA Secretariat and may not necessarily reflect the views of the individual IEA member countries. The study also draws on contributions of Franziska Mueller-Langer, Jens Giersdorf and Anastasios Perimenis of the German Biomass Research Centre (DBFZ), who provided parts of the sustainability chapter and four country profiles commissioned by the Deutsche Gesellschaft fiir Technische Zusammenarbeit (GTZ).