Bei dieser Betrachtungsweise muss Aluminium schlecht abschneiden, da zu seiner Herstellung enorm viel Energie, zur oftmaligen Wiederverwendung hingegen nur wenig Energie nötig ist. ###>If this approach is adopted, aluminium has to come out badly because large quantities of energy are used to extract it; however, only small amounts of energy are required to recycle it, which can be carried out repeatedly.