Power Factor Correction System incorporates microcomputer based measuring and computation circuits to facilitate ease of operation. The Correction System works with computing software, which can perform complex and analytical computations on the current and voltage waveform, within a span of 1 to 2 cycles of AC waveform and connects the required capacitor groups to the network. The Correction System has high speed response and is suitable for fast changing loads. Power Factor Correction System can be availed in different specifications to suit industrial requirement.