In this work, a parametric study concerning the use of combined cycle technologies for power generation, by independent power producers in Cyprus, is carried out. The cost-benefit analysis is carried out using the Independent Power Producers optimization algorithm in which the electricity unit cost is calculated. Various conventional generation options are examined, such as, steam turbines and open cycle gas turbines, and compared with a parametric study (variations in fuel type, capital cost and efficiency) for combined cycle technologies. The results indicate that the future use of combined cycle technology with natural gas as fuel is recommended. Furthermore, it is estimated that by the use of natural gas combined cycle, the CO 2 emissions environmental indicator of Cyprus power industry would be significantly reduced.