Glacier melting
  • Energy and Water Consumption

    The most important energy sources are natural gas, electricity and the energetic processing of our waste products (steam production, combined heat and power). Fossil fuels other than natural gas play a very minor role.

    Water usage is discriminated into two main classes, industrial process water and non-contact cooling water. Essentially all cooling water cycles are closed loop systems, whereby the exchanged heat is dissipated by airflow and evaporation (cooling tower) or by river water (Visp, Switzerland).

  • Energy Consumption

    (Note: 2017 data exclude Capsugel). The total energy requirement in 2017 was 10,200 Terajoules (TJ) (2,850  GWh); and with 1% down on the previous year, it remained essentially unchanged. Accompanied by a favorable economic environment with a sales increase of 10.4% the reporting year 2017 resulted in a 10% year-over-year decrease in energy demand related to sales.  

    The main energy sources used by Lonza in 2017 were natural gas (41%), electricity (29%) and self-generated energy, mainly by incineration of waste (28%). Liquid, mainly fossil-based fuels, accounted for 1% of the overall energy consumption. 

    Continual improvement also transforms to energy efficiency improvements being realized at prouction sites throughout the year. Energy consumed to run our manufacturing processes is by far the largest contributor to our climate relevant emissions. We therefore concentrate on energy efficiency measures at all our manufacturing sites - a cornerstone in Lonza's continuous improvement effort. 

    Energy consumption intensity referenced to production volume (metric tons of finished goods) in 2017 was 16 GJ/t (down 11% from 2016); when referenced to revenues the relative consumption resulted in 2250 GJ/mn CHF (down 10% from 2016).

      Energy Consumption 2017


     Energy categories 2017


  • Water Consumption

    Reporting on water consumption is separated into "industrial water" and "cooling water".

    Industrial water : Water consumed during manufacturing processes or used for general industrial purposes or in sanitary installations. Industrial water does not include unpolluted cooling water.

    Cooling water : Water used for energy transfer (cooling, heating), which is kept in a network separated from industrial water and which can be released back to receiving waters (rivers, lakes) without further treatment.

  • Industrial Water

    (Note: 2017 data exclude Capsugel). Industrial water consumption, closely related to production volume, capacity use and product mix, amounted to 7.7 million cubic meters in 2017, up 6% on 2016. With increasing biopharma production in the mix, we expect also increasing water demand. The peak in year 2012 is related to one site in the US with very high water use, acquired in late 2011 and divested by end of 2012.

    Intensity considerations: With a production volume increase (tonnage) of around 12% percent, water consumption intensity decreased and was at 12 m3/t of finished goods in 2017 (-5%); when referenced to revenues we can report a parallel decrease in relative water consumption to 1680 m3/mn CHF (4%). Both intensities indicate the product portfolio shift towards higher value added pharma products. 

     Industrial Water Consumption 2017

    Industrial water consumption of all Lonza sites active in the respective year.


  • Cooling Water

    (Note: 2017 data exclude Capsugel). All current Lonza manufacturing sites but Visp are using closed-loop cooling water systems with heat dissipation by means of airflow cooling towers. The large chemical complex at Visp (CH) makes use of the waters of the nearby river Rhone to dissipate non-recoverable heat by heat exchangers. This process is strictly regulated and monitored in order to stay within permitted heat levels to protect the river ecosystem.

    All cooling water networks are separated from any industrial water networks to prevent accidental pollution of water. Total cooling water used by Lonza in 2017 amounts to 133 million cubic meters, down 7% with Visp participating at >99%.

    In order to show trends of the cooling water use over time, unmasked by the large water volumes used at Visp, the graph shows the cooling water consumption of all Lonza manufacturing plants without the 'flow-through' sites of Visp and, in 2012, Brandenburg. Notably after the acqusition of Arch Chemicals Inc. in late 2011, the industrial water use has risen to values around 0.5 million cubic meter. We reinforced our water conservation activities where opportunities could be realized, and the decline since 2014 is remarkable, although 2017 shows a slight increase of 2% to 183,000 m3.

     Cooling Water 2017