Major Power Stations

Hydroelectric Power Stations
(authorized maximum capacity 30 megawatts or more)

Power Station River System Authorized Maximum Capacity (megawatts) Commencement of Commercial Operation
Towada Oirase River 31.1 Dec. 1943
Obonai Omono River 31.5 Jan. 1940
Yakuwa Aka River 60.3 Mar. 1958
Hondoji Mogami River 75.0 Jun. 1990
Hourai Abukuma River 38.5 Dec. 1938
Honna Agano River 78.0 Aug. 1954
Uwada 63.9 Mar. 1954
Dai-ni Numazawa (Pumping Type Power Plant) 460.0 May 1982
Miyashita 94.0 Dec. 1946
Yanaizu 75.0 Aug. 1953
Katakado 57.0 Aug. 1953
Shingo 51.6 Jul. 1939
Dai-ni Shingo 38.8 Sep. 1984
Yamasato 45.9 Feb. 1943
Kaminojiri 52.0 Aug. 1958
Toyomi 61.8 Dec. 1929
Dai-ni Toyomi 57.1 Aug. 1975
Kanose 49.5 Dec. 1928
Dai-ni Kanose 55.0 May 1973
Agekawa 53.6 May 1963

Thermal Power Stations
(excluding internal combustion power plants)

Power Station Fuel Authorized Maximum Capacity (megawatts) Commencement of Commercial Operation
Hachinohe No.5 LNG 416 Jul. 2015
Noshiro No.1 Coal 600 May 1993
No.2 Coal 600 Dec. 1993
Akita No.2 Heavy Oil, Crude Oil 350 Feb. 1972
No.3 Heavy Oil, Crude Oil 350 Nov. 1972
No.4 Heavy Oil, Crude Oil 600 Jul. 1980
No.5 Light Oil 333 Jul. 2012
Sendai No.4 Natural Gas 468 Jul. 2010
Shin-Sendai No.3 Series LNG 980 Dec. 2015
Jul. 2016
Haramachi No.1 Coal 1,000 Jul. 1997
No.2 Coal 1,000 Jul. 1998
Higashi-Niigata No.1 Heavy Oil, Crude Oil, Natural Gas, LNG 600 Apr. 1977
No.2 Heavy Oil, Crude Oil, Natural Gas, LNG 600 Jun. 1983
No.3 Series LNG 1,210 Dec. 1984
Oct. 1985
No.4 Series LNG 1,700 Jul. 1999
Dec. 2006
No.5 LNG 339 Jun. 2012
Minato No.1 Heavy Oil, LNG 350 Nov. 1972
Minato No. 2 Heavy Oil, LNG 350 Nov. 1975
Niigata No.5 Series Natural Gas 109 Jul. 2011

Geothermal Power Stations

Power Station Authorized Maximum Capacity (megawatts) Commencement of Commercial Operation
Kakkonda No.1 50.0 May 1978
No.2 30.0 Mar. 1996
Uenotai No.1 28.8 Mar. 1994
Sumikawa No.1 50.0 Mar. 1995
Yanaizu-Nishiyama No.1 65.0 May 1995

Nuclear Power Stations

Power Station Reactor Type Rated Generating Capacity (megawatts) Commencement of Commercial Operation
Onagawa No.1 BWR 524 Jun. 1984
No.2 BWR 825 Jul. 1995
No.3 BWR 825 Jan. 2002
Higashidori No.1 BWR 1,100 Dec. 2005