Battery-electric multiple units (BEMUs) are trains that use batteries for propulsion. Unlike electric multiple units (EMUs), BEMUs don't require overhead wires for the entire route. Instead BEMUs charge their batteries along certain sections of the route, typically at a terminus station, as well as use regenerative braking. With BEMUs it's possible to use clean and quiet electric trains without the major expense of installing and maintaining overhead wires on the entire route they use.
Japan has the most BEMUs of any country, and as of 2023 there are four routes in Japan that use BEMUs. In this video we'll take a look at the characteristics of each route and their BEMU operations.
With battery technology continuously improving, other countries are also interested in using BEMUs as a cheaper way to bring electric trains to non-electrified routes. BEMUs are a strong candidate for use on the Dan Patch Corridor and other potential regional passenger rail routes in the Twin Cities.
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