Power factor correction (PFC) is the process of ajusting the characteristics of electric loads in order to improve power factor so that it is closer to unity (1). Power factor correction may be applied either by an electrical power transmission utility to improve the stability and efficiency of the transmission network; or, correction may be installed by individual electrical customers to reduce the costs charged to them by their electricity supplier. A high power factor is generally desirable in a transmission system to reduce transmission losses and improve voltage regulation at the load.