Hotel Electric Power

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Hotel Electric Power (HEP) is a maritime term referring to electricity generated and used aboard a ship for purposes other than propulsion such as lighting, communications, climate control, refrigeration, water desalination and treatment, entertainment, etc. The term has also been applied in railway passenger train usage meaning lighting, climate control, water heating, cooking power, etc. In the USA however, the same definition with the same initials (HEP) is generally understood to stand for Head End Power.