Greenhouse gas emissions
Air separation units process ambient air without producing any toxic or environmentally harmful emissions.
Even in the event of a shut-down or fault, only air components are emitted. Our products are gases which are delivered either by pipeline, via tankers to fill customer tanks or in cylinders. Only cylinder gases are packaged products. Steel cylinders are usually rented out to customers and returned empty after use. They are therefore 100% reusable after the requisite cleaning and inspection.
Our total greenhouse gas emissions are shown as CO2 equivalents (CO2e). The quantity of emissions is converted into greenhouse gas equivalents using the International Energy Agency’s conversion factors. Our calculation of greenhouse gases is broken down into direct emissions (Scope 1) and indirect emissions (Scope 2 and Scope 3), in accordance with the GHG (Greenhouse Gas) Protocol.
Scope 1 includes all direct CO2 emissions from our production facilities.
Despite efficiency gains, CO2 emissions are increasing in absolute terms as the number of new production facilities grows. The reduction in specific electrical energy consumption as the biggest factor influencing Messer’s CO2 equivalent can be demonstrated using the energy coefficient. Indirect CO2 emissions represent the generation of purchased electricity (Scope 2).
A total of 4,864.6 GWh of electricity was used to operate our production facilities and filling plants. In 2016, the figure was 4,432.7 GWh. This is a significant increase, due on the one hand to commissioning of the SKS Hunan air separation unit (plus 81 GWh) and the significantly higher consumption by the other units in China of 288 GWh. In South-Eastern Europe, the increase was 64 GWh, and in Western Europe 3 GWh. Our electricity consumption, and therefore the absolute value of the CO2e, increases with each new production facility and with greater capacity utilisation of existing facilities. The CO2e for 2016 was 2,817,754 tonnes, compared with 3,151,015 tonnes in 2017 (Scope 2). The energy coefficient fell significantly from 1.368 in 2016 to 1.345 in 2017. This owed to capacity utilisation of the production facilities in China and to increased customer consumption in Europe.
Indirect emissions that come under Scope 3 include all Group-wide emissions that are not covered by Scope 1 or Scope 2. This includes, for example, the electricity needed for administration buildings or used in connection with travel undertaken by employees. Here the CO2 equivalent for 2017 was 68,359 tonnes compared with 64,772 tonnes in 2016.
All in all, emissions of CO2e increased to 3,361,213 tonnes. The CO2e coefficient per euro of revenue stood at 2,729 kg in 2017.