page_title: Electric locomotive
section_title: China
hierarchical_section_title: Electric locomotive / Electric locomotives around the world / Asia / China
caption_attribution_description: English: HXD3D 0250 &amp; HXD3D 0496 are double-heading haul Z6 Train to Beijingxi Railway Station.
context_page_description: An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor.
  Electric locomotives with on-board fueled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine-electric and not as electric locomotives, because the electric generator/motor combination serves only as a power transmission system.
  Electric locomotives benefit from the high efficiency of electric motors, often above 90%. Additional efficiency can be gained from regenerative braking, which allows kinetic energy to be recovered during braking to put power back on the line. Newer electric locomotives use AC motor-inverter drive systems that provide for regenerative braking. Electric locomotives are quiet compared to diesel locomotives since there is no engine and exhaust noise and less mechanical noise. The lack of reciprocating parts means electric locomotives are easier on the track, reducing track maintenance.
context_section_description: China has over 100,000 kilometres (62,000 mi) of electrifed railway. With most trunk line heavy freight and long distance passenger trains operated using high power electric locomotives, typically in excess of 7,200 kilowatts (9,700 hp) of power output.
caption: Two China Railway HXD3Ds hauling a long distance passenger train.
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