Initiatives toward decarbonization are being undertaken worldwide. In the power generation market, the introduction of renewable energy is also in progress. Meanwhile, as a certain number of thermal power facilities are expected to remain in operation to ensure stable electricity supply, it is indispensable to implement CO2 emission control in thermal power generation. The existing power facilities are no exception in this regard. Steam turbines, which have been incorporated as the main equipment of power facilities, inevitably degraded after long-term operation. Although the internal parts are often upgraded as a countermeasure, their simultaneous remodeling by applying the latest high-efficiency technologies can add more value: less fuel consumption due to higher efficiency, which in turn leads to the reduction of CO2 emissions. This report presents some examples of the steam turbine retrofits with the latest high-efficiency technologies and the resulting effect of CO2 emission reduction.
