This paper examined the quality of electric supply in Nigeria, especially the North Central region, and proffered a modern approach to improving the quality using Flexible Alternating Current Transmission System (FACTS) devices. Electrical energy is a product that should possess the proper quality requirements to satisfy the social, economic, and technical needs of society. The Nigerian transmission grid system was modeled and simulated in a PSAT environment as a 35-bus system. Thyristor Control Series Compensator (TCSC) is among other FACTS devices that are capable of minimizing transmission line losses and increasing the voltage profile of the buses. Genetic Algorithm (GA) optimization technique has been deployed as an effective method of placing TCSC on the Nigerian 330 kV Grid System, to control power flow and improve bus voltages.