The laundry detergent production facilities include a bottle blow molding line with four compressors. Thanks to the installation of an additional, higher-level control system, a rotating principle has been introduced where only one or two compressors now generate the required compressed air while the compressors that are not required are switched off and disconnected from the power supply. This can cut the annual electricity demand for compressed air generation in the bottle blow molding line by 38 percent.