International Activities

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  • IPP Business
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IPP Business
Outline of Domestic Facilities
Hydroelectric Power
Generating Facilities
Hydroelectric Power
J-POWER has built and run hydroelectric power stations for over 60 years. As of the end of March 2016, its 60 hydroelectric power stations in Japan had a total capacity of 8,570 MW, accounting for 19% of Japan's hydroelectricity.
Project List (more than 200MW)
Name Capacity(MW) Type Started Operation
Shintoyone 1,125 pumped storage 1972
Okukiyotsu 1,000 pumped storage 1978
Shimogo 1,000 pumped storage 1988
Numappara 675 pumped storage 1973
Okukiyotsu No.2 600 pumped storage 1996
Tagokura 395 General 1959
Okutadami 560 General 1960
Ikehara 350 pumped storage 1964
Sakuma 350 General 1956
Tedorigawa No.1 250 General 1979
Nagano 220 pumped storage 1968
Miboro 215 General 1961
Thermal Power Generation
Thermal Power Generation
J-POWER operates seven coal-fired and one geothermal power station in this category. It specializes in coal-fired power generation.

As of March 2016, J-POWER operated seven coal-fired power stations with a combined output of 8,374 MW. J-POWER is the largest coal-fired thermal power station operator in Japan, with 21% share of nationwide output.
Project List
Name Capacity(MW) Fuel Type Started
Tachibanawan 2,100 Coal 2000
Matsuura 2,000 Coal 1990
Takehara 1,300 Coal 1967
Matsushima 1,000 Coal 1981
Isogo 1,200 Coal 2002
Takasago 500 Coal 1968
Ishikawa Coal 312 Coal 1986
Onikobe 15 Geothermal 1975
Distribution Facilities

Distribution Facilities
Distribution Facilities
As of the end of March 2016, J-POWER maintained a nationwide network of 2,400 kilometers of transmission lines and a total of eight substations, frequency converter stations and alternating current/direct current (AC/DC) converter stations, plus a telecommunications network.

Transmission Lines
Total Lines 2,407.9km
Extra-high voltage transmission lines 2,140.7km
DC power transmission lines 267.2km
Number 4
Capacity 4,301MVA
Frequency Converter Station
Number 1
Capacity 300MW
AC/DC Converter Stations
Number 4
Capacity 2,000MW
Telecommunications Network
Total circuit length 5,952km
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