A firm or individual that purchases products for its own consumption and not for resale (namely, an ultimate consumer.
An end-consumer in the electricity sector is the entity that purchases power for his own consumption and not for further trading purposes. An end-user in the gas sector is a person or company who actually consumes natural gas (as opposed to one who sells or resells it and includes residential, commercial, light industrial, heavy industrial customers and direct connect users and could also include CHP generation, petrochemical works, cement and glass manufacturers adn CCGT power plants).The ultimate consumer of petroleum products or natural gas; most commonly refers to large commercial, industrial, or utility consumers.