Power factor correction is a technique of counteracting the undesirable effects of electric loads that create a power factor that is less than one.
Power factor correction may be applied either by an electric power utility to improve the stability and efficiency of system or by customer at the premises. This is required to ensure long term, effective and economic operation and utilization of electrical power.In present paper we present automatic power factor correction scheme based on Arduino platform and triac based capacitor switching.loads in modern electrical distribution systems are inductive. Examples include motors, transformers, gaseous tube lighting ballasts and induction furnaces. Inductive loads consume two kinds of power viz.So, with the presence of inductive load, power consumption and hence electric bill increase for same amount of work done.