Our Scope 1 emissions are direct GHG emissions from owned or controlled sources of the Group, excluding emissions from small offices whose emissions are negligible. Scope 2 encompasses indirect GHG emissions from electricity, steam, heat and cooling purchased by the Group.
Our GHG emissions intensity levels are measured in tons of carbon dioxide equivalent (tCO2e) per million of sales in Swiss francs for total Scope 1 and 2 emissions (see page 39 and 81 of the report). In 2022, emissions data from 166 operational sites were consolidated.
Our Scope 1 emissions increased (+28%) in 2022 compared to the baseline, mainly due to the increase in natural gas from the changed methodology as reported in 2021. Compared to 2021, Scope 1 emissions decreased by 3%, before accounting for the effect from acquired sites. Excluding acquisitions, Scope 1 emissions (18.3 kt) were reduced by 6% in 2022 compared to 2021.
In 2022, we reduced our Scope 2 emissions by 10% compared to our 2019 baseline and lowered the emissions by 9% compared to our 2021 level, before accounting for effects from acquired sites. Excluding acquisitions, Scope 2 emissions (121.7 ktCO2e) were reduced by 14% in 2022 compared to 2021. The improvement in emissions levels is attributed mainly to the shift toward using renewable electricity.
In terms of GHG emissions intensity for Scope 1 and 2, which is the metric we are using for our climate neutral 2030 target, we have notably lowered the carbon intensity of our operations in 2022 (50.6) compared to 60.9 from the 2019 baseline year and also compared to 60.8 in 2021.
Among our 166 sites, 70 of them are using the market-based method to report on their Scope 2 emissions, while 96 sites are using the location-based method, as they do not have contractual information that meets the Scope 2 quality criteria.
Our indirect emissions are attributed mainly to electricity bought for all sites, heat bought at a few sites and cooling bought at a handful of sites. Our direct CO2 emissions stem from the combustion of natural gas and oil for heating purposes, emissions from diesel and gasoline for vehicles (private use excluded) and hydrocarbon gases for specific production processes such as thermal spray.
Gases like propane or acetylene that are used in the Oerlikon Balzers’ thin-film coating processes become part of the surface and are not combusted. Since these gases do not react with oxygen, they are not considered as a form of energy (but rather process gases) and therefore do not generate CO2 and are excluded from the emissions measurements for the environmental metrics reporting.
In measuring our CO2 emissions, we follow the defined unit by the GRI Standards, which is tCO2e. Unlike a number of other industrial companies, we do not use F-gases in our production processes. For example, we do not use sulfur hexafluoride (SF6) gas, which is an insulating gas for electrical equipment. These gases are considered much more damaging GHGs than CO2, with a negative impact of about 22 000 times that of CO2. Thus, our CO2 emissions can be considered “real” CO2 emissions and not CO2-equivalent emissions (as SF6 would be classified).