Shanghai Metro as the tier 1 metro line targets to ensure passenger safety and maintenance efficiency, which rely on stable power supply and efficient service. 

A total of more than 3,000 Siemens medium-voltage gas-insulated switchgears have been serving almost all metro lines in Shanghai, since Shanghai Metro launched in early 1990. The offerings ensure passenger safety and maintenance efficiency, and also enable greater reliability of power supply and longer service life. Meanwhile, over 4,000 Siemens protection devices using in Shanghai Metro have been running steadily for decades. They provide efficient and reliable power supply for urban rail transit. Besides the reliable power supply, Siemens lighting solutions help Shanghai Metro increase energy efficiency by improving lighting efficiency, reducing lighting energy consumption, and prolonging the service life of lamps. It creates a comfortable and pleasant waiting environment for passengers.