In this thesis the Copper-Chlorine (Cu-CI) thermochemical cycle and its components as well as operational and environmental conditions are defined, and a comprehensive thermodynamic analysis of a Cu-CI thermochemical cycle, including the relevant chemical reactions, is performed. Also the performance of each component/process is evaluated through energy and exergy efficiencies. Various parametric studies on energetic and exergetic aspects with variable reaction and reference-environment temperatures are carried out. A detailed analysis of the general methodology of cost estimation for the proposed process, including all cost items with their percentages, the factors that affect accuracy, and a scaling method, is also presented. / UOIT