The 700 MW coal-fired supercritical sliding pressure boiler at Hokuriku Electric Power Co., Inc., Tsuruga Thermal Power Station No.2 was designed based on the high-performance and reliable 500 MW boiler at the same Power Station No.1. Applying elevated steam of 593/593°C, our state-of-the-art low-NO_X combustion APM burner, A-MACT and MRS pulverizer technology, this boiler has achieved the highest combustion performance with extremely low NO_X emission and unburnt carbon together with outstanding boiler operation. This paper reports the design features and operation results of the boiler, e.g., (1) extremely low NO_X and unburnt carbon due to cutting-edge combustion and (2) superior boiler operating performance and minimum 15% load in exclusive coal firing.