Combined cycle power plants are highly efficient, flexible, reliable, cost-effective and environmentally friendly solutions to generate electrical power.
In combined cycle power plants (CCPPs) a gas turbine generator generates electricity while the waste heat from the gas turbine is used to make steam to generate additional electricity via a steam turbine.
In other words: The output heat of the gas turbine flue gas is utilized to generate steam by passing it through a heat recovery steam generator (HRSG), so it can be used as input heat to the steam turbine power plant. This combination of two power generation cycles enhances the efficiency of the plant. While the electrical efficiency of a simple cycle plant power plant without waste heat utilization typically ranges between 25% and 40%, a CCPP can achieve electrical efficiencies of 60% and more. Supplementary firing further enhances the overall efficiency.
The high fuel utilization factor of the plant contributes to low lifecycle costs. Together with an outstanding operational flexibility, CCPPs can provide a tailor-made solution for your power needs.
Siemens products for combined cycle solutions: