Renewable energy industrialization is clean sources of energy that have a much lower circumstantial impact than traditional energy technologies. Advancement of new energy generation is important for expanding the share of renewable energy sources. Thermoelectricity is the context of renewable energy sources. This book provides an effective approach to develop the thermoelectric bismuth telluride nanostructures by using a simple two-step co-precipitation chemical route. Nanostructuring has been adequately employed to appreciate the thermoelectric achievement. Thermoelectric energy conversion is applicable for the misuse heat recovery system.