The two energy scen arios proposed by Shell are ‘Scramble’ and ‘Blueprints’. Figure 6.1 illus trates the as sump tions about their evolution with time. Although

techno lo gical and eco nomic factors – par ticu larly price – are very im port ant in the de velopment of both, the main distinctive feature lies in the social and polit ical de cisions. Each scen ario will be briefly de scribed next.