147 / 188
145
Figure 6.6 CO
2
e emissions of an automotive supply chain on a product base [6]
Considering not only the operations of the buildings but also the construction
the number raises to more than 50%. In the USA, commercial properties are responsible
for 40% of the total energy use of buildings. Studies for the energy use of buildings in
supply chains determine a total 13% of all emissions in a supply chain (World Economic
Forum 2009). A study from the UK quantifies the emissions from warehousing up to
3% of the total emissions in the UK (UK Warehousing Association). Thus, it is worth
considering warehouses in an assessment of emissions in supply chains. Considering
a cradle-to-grave concept for a warehouse, 15% of the environmental impact takes
place during the construction phase, 80% during operation and 5% for the disposal
considering a lifetime of 25-40 years [6]. During operation most of the energy is used
for heating (see Figure 6.7).
Figure 6.7. Typical energy consumption of a warehouse [10]