The term POWER UNIT is composed of three words: WATT, VOLT, and KILOWATT. WATT is a unit of power equal to one joule per second, while VOLT is a unit of electrical potential difference or electromotive force. KILOWATT is a unit of power equal to 1000 watts. Together, these three words form the term POWER UNIT, which is used to measure the rate at which energy is transferred, converted, or consumed.