Hotel electric power (HEP) is electricity generated and used by a vehicle, especially a ship or truck, 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, cooking, lighting, and water heating.
Exploring ABANDONED Hotel with POWER (Electricity Still On) - Residents and business owners of the iconic Lewis & Clark Tower building got notice from the city that their building had been deemed unfit for occupancy because its two elevators do not work....