Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has continually contributed to global
environmental protection, as well as to the stable supply of energy through the development of gas
turbines based on abundant operational achievements and advanced technology research efforts.
More recently, we have developed the M501J capable of achieving the world's first turbine inlet
temperature of 1,600°C and even a thermal efficiency in gas turbine combined cycle (GTCC) of
61.5% or more, using developments attained in the national "1,700°C-Class Ultrahigh-
Temperature Gas Turbine Component Technology Development" project we joined in 2004.
Demonstrative operation started in 2011, using the demonstration equipment located within our
Takasago Machinery Works, for later implementation of the accumulation of our global sales and
operational record. Furthermore, based on the core technologies adopted in the M501J (60Hz
unit), the M701J as the 50-Hz unit of the J Series was developed, and its shipment was completed
after being tested at the factory. This paper relates to how these state-of-the-art high-efficiency gas
turbines are developed and operated.
