4.2 Conserving resources Primary energy Secondary energy (1,000 gigajoules) (1,000 gigajoules) Natural gas / Fuel oil, Electricity District heating liquid petroleum gas gasoline / diesel 2,927 2,277 63 232 5,629 5,586 1,163 1,016 FY 2022 FY 2023 FY 2022 FY 2023 FY 2022 FY 2023 FY 2022 FY 2023 Total Total 3,010 2,513 6,792 6,602 FY 2022 FY 2023 FY 2022 FY 2023 Emission of air pollutants Atmospheric pollutant emissions We take a comprehensive approach to air pollution by analyzing Fiscal year local emissions at our various office and production facilities (in metric tons) 2023 2022 around the world. We also pay close attention to emissions Volatile organic compounds 250 274 from volatile organic compounds (VOC), pollutants from Ozone-depleting substances combustion processes, and where they are still present, of R11 equivalent1 0.044 0.036 ozone-depleting substances (ODS) at our environmentally 1 The R11 equivalent is a measure of ozone depletion potential relevant sites. Based on our internal environmental standards, these principles and procedures are implemented on a man- We reduced our VOC emissions by another 9% from the datory basis. previous year to 250 metric tons in fiscal 2023. Total ODS emissions increased slightly, amounting to 0.044 metric tons The mandatory environmental management system for our in fiscal 2023. sites includes the requirement to establish targets and measures for reducing air pollutants, and where applicable, We determined the quantity of nitrogen oxides in our relevant to address and mitigate their impact. thermal processes with the aid of computational procedures, assuming typical combustion conditions. For fiscal 2023, Our Environmental Protection Standards include a commit- this yielded a figure of 53 metric tons for our environmen- ment to phase out ODSs. In fiscal 2023, we held VOC and tally relevant sites compared to 58 metric tons the year ODS training workshops to increase awareness of the harmful before. This figure includes nitrogen oxides that are released effects of air pollutants, improve the data quality at sites, by burning the fuels listed under primary energy. and provide recommendations for the reduction and phase- out of VOCs and ODSs. SIEMENS SUSTAINABILITY REPORT 2023 67