The bottled water industry involves a relatively light manufacturing process, meaning it does not require any heavy transformation processes. Impacts considered in the manufacturing phase are primarily related to energy required for the entire production process at the factory level. This includes the transformation of packaging materials into bottles, product bottling (pumping, storage, treatments (if any), filling), securing with secondary packaging and storage until finished products are shipped outside of the factory.
The manufacturing phase accounts for approximately one-sixth of the overall GHG emission and non-renewable energy footprint of our company. In 2015, manufacturing by Nestlé Waters generated 22g CO2eq per liter (-20% vs. 2008) and required 0.22 MJ of energy per liter (-19% vs. 2008).
Nestlé Waters has introduced many initiatives to optimize the energy efficiency of its plants, including increasing line productivity, investing in more energy-efficient machines, heat recovery, sharing expertise among the engineering community and introducing new bottle blowing technologies.
Cumulatively, these energy saving actions have created a decoupling effect. While our production has increased, our energy use per liter has decreased by 19 % (from 2010 to 2015).
In addition, Nestlé Waters is seriously exploring the economic feasibility of renewable energy use to partially or fully support factory operations. Our operations in Italy, France and Switzerland are currently developing programs in collaboration with rural communities to produce energy from bio-mass. We are also exploring opportunities to develop other renewable energy sources (such as wind or solar) to supply our factory energy needs.
Case Study of the Cristalp Factory
The heat from the Croix Source in Saxon is being used to support the energy needs of municipal buildings, a bottling factory and a medico-social complex. The heat used from the Croix Source is equivalent to around 0.8 GWh per year. However, with several renovations in 2015, this figure could go up to 1.35 GWh. According to the project's partners, Saxon, Nestlé Waters and Greenwatt, this system will also be coupled with cold production in the summer, which will reduce the use of refrigerating machines and power consumption overall.