Complex Power is a concept in electrical engineering that combines both real power and reactive power. Real power, measured in watts, represents the actual energy consumed by a load, while reactive power, measured in volt-amperes reactive (VAR), accounts for energy stored and released by inductive and capacitive components in an AC circuit. The total Complex Power is expressed as a complex number, with real power as the real part and reactive power as the imaginary part. This representation helps engineers analyze and design electrical systems, ensuring efficient energy use and maintaining power quality in AC circuits.