1. Ohgishima Power Station No. 3 Generator Unit
The Ohgishima Power Station No. 3 generator unit with a generating capacity of 407.1 MW developed for Ohgishima Power Co., Ltd. began service operation on February 1, 2016. The No. 3 unit was targeted for an early operational start amid concerns of power supply shortages with the shutdown of nuclear power plants and other developments in the wake of the Great East Japan Earthquake that struck on March 11, 2011. Construction was completed on a tight schedule.
The equipment is combined cycle generating equipment provided under an engineering, procurement and construction (EPC) contract where construction, installation and equipment are delivered as a complete set. By sharing spare parts and high-temperature components for turbines with the No. 1 and No. 2 units, for which Hitachi has concluded a long-term service agreement (LTSA), the plant has helped Hitachi provide equipment that boasts exceptional reliability and operability in every aspect from construction to operation and maintenance.
During construction, the work proceeded only after full consideration to avoid impacting the adjacent No. 1 and No. 2 units, which were engaged in commercial operation. Guaranteed performance figures were met without any accidents or disasters, and Hitachi managed to reach the service operation launch date on schedule. With business operators requiring an even more stable power supply due to the full deregulation of electric power sales in April 2016, Ohgishima Power Station operates as a valuable power plant.