ISBN: | 978-5-5080-1333-2 |
High Quality Content by WIKIPEDIA articles! In rail transport, head end power (HEP) or electric train supply (ETS) is the electrical power distribution system on a passenger train. The power source, usually a locomotive at the front or `head` of a train or a generator car, generates all the electricity used for lighting, electrical and other `hotel` needs. The maritime equivalent is Hotel Electric Power.