Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has continued to contribute to the preservation of the global environment and the stable supply of energy through constant gas turbine development based on our abundant operating results, research and verification of state-of-the-art technology. In recent years, using results from the "1700°C Class Ultrahigh-Temperature Gas Turbine Component Technology Development" national project that we have participated in since 2004, MHPS has developed the highly-efficient M501J, which achieved the world's first turbine inlet temperature of 1600°C, and has accumulated operating results around the world. This report presents the development status of the next-generation 1650°C class JAC (J Air Cooled) gas turbine, which is based on the proven J-series and uses an enhanced air-cooled system for cooling the combustor, ultra-thick TBC (thermal barrier coating) and a compressor with a high pressure ratio as core technologies. These have been verified as individual components, and actual equipment verification using the verification facility in the MHPS Takasago Works is planned to commence in 2020 for final verification.
