Ordered by the Deutsches Kupfer-lnstitut the Institute of Non-ferrous Proce
ss Metallurgy of the RWTH-Aachen treated the inventory of a life cycle asse
ssment copper materials in the rime between march 1992 and December 1993, S
ince finishing and publishing this study in summer 1995 it became clear tha
t by giving only primary energy demands of processes no concrete energetic
information about the technology itself is possible because they are decisi
vely influenced by the kind of energy supply, Interpretation of processes t
herefore is only possible by knowing the corresponding final energy which m
eans the reel energy demand of a production plant divided up into the diffe
rent energy carriers, The present inventory for copper production and manuf
acturing represents a scientific basis in the field of eco-balancing. The c
omparision of primary and final energy demand firstly shows the complexity
of such an inventory but also the risk of misinterpretation. So only expert
s with precise knowledge of a production plant can make conclusions.