Higashi-Niigata Thermal Power Station

Higashi-Niigata Thermal Power Station (東新潟火力発電所, Higashi-Niigata Karyoku Hatsudensho) is a large fossil-fuel thermal power station operated by Tohoku Electric in the town of Seirō, Niigata, Japan. The facility is located on the Sea of Japan coast and is adjacent to Niigata Higashi Port.

Higashi-Niigata Thermal Power Station
東新潟火力発電所
Higashi-Niigata Thermal Power Station
CountryJapan
LocationSeirō, Niigata
Coordinates37°59′59″N 139°15′28″E
StatusOperational
Commission date1971
Owner(s)Tohoku Electric
Thermal power station
Primary fuelHeavy Oil, Crude Oil, LNG
Power generation
Units operational6
Units decommissioned2
Nameplate capacity4810 MW

History

The Higashi Niigata Thermal Power Station started operations in November 1972. A total of six units (18 generators) were constructed, making it the largest thermal power plant operated by Tohoku Electric and one of the largest in Japan. It was originally supplied by domestic natural gas from the Ago-oki oil and gas field offshore Niigata Prefecture, but since 1998 has been supplied by an LNG terminal installed in the adjacent port area. The Niigata Thermal Power Station and the Shin Sendai Thermal Power Station are also supplied from this facility.

Minato Unit 1 and Port Unit 2 were constructed in 1972 and 1975 as a joint venture between Tohoku Electric and Nippon Light Metals. Unit 1 and Unit 2 (online from 1977 and 1983) are standard fossil-fuel burning steam turbine driven power plants. Unit 3 (on-line 1984 and 1985) is a 1100 deg C-class multi-turbine combined cycle (CC) plant and has Tohoku Electric's first waste heat recovery system employing three gas turbines and one steam turbine per system. Unit 4 (on-line 1999 and 2006) is a 1400 deg C class multi-turbine More Advanced Combined Cycle (MACC) system, with two gas turbines and one steam turbine per system.

Due to power shortages in the grid caused by the Tōhoku earthquake and tsunami in March 2011, two emergency generation systems were installed as a temporary measure, but were dismantled in 2015.

Plant details
Unit Fuel Type Capacity On line Status
Minato 3 Light Oil Gas turbine 26.9 MW 2011 Decommissioned 2015; scrapped
5 LNG Gas turbine 339 MW 2012 Decommissioned 2015; scrapped
Minato-1 Heavy Oil / LNG Steam turbine 350 MW 1972 operational
Minato-2 Heavy Oil / LNG Steam turbine 350 MW 1975 operational
1 Heavy Oil/ Crude Oil / LNG Steam turbine 600 MW 1977 operational
2 Heavy Oil/ Crude Oil / LNG Steam turbine 600 MW 1983 operational
3-1 LNG CC 614 MW 1984 operational
3-2 LNG CC 614 MW 1985 operational
4-1 LNG MACC 826 MW 1996 operational
4-2 LNG MACC 826 MW 2006 operational
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See also
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