China's first permanent magnet subway train, which saves up to 30 percent energy compared with traditional trains, has gone into service a few days ago in Central China's Hunan province.
The subway train, Line 1 of provincial capital Changsha, is equipped with a permanent magnet tractor system which has higher power density and is more power efficient.
The train was developed by CRRC Zhuzhou Locomotive Co Ltd, Zhuzhou CRRC Times Electric Co Ltd. and Changsha Metro Group.
If used on all subways in Changsha, the system could save the city 5.5 million Yuan ($830,000) of power cost every year.