This methodology allows CERs to be generated by the conversion of an existing power plant from single cycle to combined cycle. This process enables the waste heat from the traditional power plant to be captured and used to generate steam for a second turbine -- using little or no additional fossil fuels. QT is helping the Ghanaian power company obtain carbon finance for converting one of its thermal stations from single-cycle to combined-cycle, utilizing waste heat from the boiler to generate electricity in a heat recovery steam generator (HRSG). This project will utilize the waste heat from two 110 MW generators in a power plant in Takoradi, Ghana to generate steam to use for the HRSG. Currently, this waste heat is not being used. Adding the combined-cycle component will increase the capacity by another 110 MW for a total plant size of 330 MW.
The project will help Ghana meet its growing energy needs, which can only be met by adding fossil fuel plants. We believe the CO2 reductions could be 500,000-700,000 tons per year while providing Ghana will 110 MW of additional, carbon-free electricity.
The Combined Cycle Plant: A combined cycle power plant is a dual cycle plant. The "2nd" part of the combined cycle is a heat recovery unit. It takes advantage of the energy in the exhaust gasses to create steam. The steam spins a steam turbine to generate additional electricity.