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Hotel electric power (HEP) is electricity generated and used by a vehicle, especially a ship, truck or some turbo prop aircraft without APU generator for purposes other than propulsion such as climate control, communications, entertainment, lighting, refrigeration, water desalination and treatment, etc. The electrical load of such systems is termed the "hotel load".

In a railway contexts a passenger train uses head-end power (also abbreviated to HEP) for functions such as climate control (heating and air conditioning), cooking, lighting, and water heating.

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