Page 122 - Materials Chemistry, Second Edition

8 Scope Definition 107

Fig. 8.14 Swedish (a) and Danish (b) electricity consumption mix in 2014 (low voltage, e.g. for
domestic consumption). Imports from neighbouring countries can be further broken down into
energy sources. ‘Others’ is an aggregation of all energy sources contributing less than 1% to the
mix (Treyer and Bauer 2013)

Table 8.5 shows the geographical scope for life cycle stages and processes in the
illustrative case of window frames (Chap. 39).
During an inventory analysis, it is common that some unit processes cannot be
obtained for the described location, such as a specific country. In these cases, the
LCA practitioner must choose the most representative unit process to approximate
the actual unit process based on his or her knowledge of geographical variations in
central factors such as climate, regulation and markets. For example, in a study