In the future, a lot of problems can be faced in energy management due to the heavy consumption of renewable and non-renewable energy sources. This is because of the ever-growing population and huge usage of electronic appliances in modern life. Therefore, people are looking into different fields to increase energy demand. In this chapter, the role of advanced ceramics and their applications of thermoelectric technology were discussed. Also, an attempt was made to study different advanced ceramic materials that are used for thermoelectric power generation in recent years.