Combined cycle power plants are those which have both gas and
steam turbines supplying power to the network. Combined cycle
power plants employ more than one thermodynamic cycle –Rankine
(steam) and Brayton (gas). In a combined cycle power plant, a gas
turbine generator generates electricity and the waste heat is
used to make steam to generate additional electricity through a
steam turbine, which enhances the efficiency of electricity
generation. Additionally, combined cycles are characterized by
flexibility, quick part-load starting, suitability for both
base-load and cyclic operation, and a high efficiency over a wide
range of loads.
Combined cycle power plant assets need to be flexible to meet
rapidly fluctuating demand levels. As well, they need to remain
reliable and demonstration
