About Us

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 32.5 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 54.2 Dec. 1928
Dai-ni Kanose 57.2 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. 1994
No.3 Coal 600 Mar. 2020
Sendai No.4 Natural Gas 468 Jul. 2010
Shin-Sendai No.3 Series LNG 1,046 Dec. 2015
Jul. 2016
Haramachi No.1 Coal 1,000 Jul. 1997
No.2 Coal 1,000 Jul. 1998
Higashi-Niigata No.1 LNG 600 Apr. 1977
No.2 LNG 600 Jun. 1983
No.3 Series LNG 1,210 Dec. 1984
Oct. 1985
No.4 Series LNG 1,750 Jul. 1999
Dec. 2006
Niigata No.5 Series Natural Gas 109 Jul. 2011
Joetsu No.1 LMG 572 Dec. 2022

Wind Power Station

Power Station Authorized Maximum Capacity (megawatts) Commencement of Commercial Operation
Shin-Noshiro No.1 14.4 Dec. 2021

Solar Power Station

Power Station Authorized Maximum Capacity (megawatts) Commencement of Commercial Operation
Hachinohe No.1 1.5 Dec. 2011
Sendai No.1 2.0 May. 2012
Ishinomaki-Hebita No.1 0.3 Mar. 2016
Haramachi No.1 1.0 Jan. 2015
Ajigasawa No.1 0.4 Sep. 2013
Kuji No.1 1.4 Sep. 2013
Kuji-Edanarusawa No.1 0.9 Jun. 2015
Shiroishi No.1 1.0 Nov. 2013
Ishinomaki-Ogatu No.1 0.5 Jun. 2015

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

* Commercial operation ended (Dec. 2018)
Decommissioning plan approved (Mar. 2020)

Geothermal power generation was transferred to Tohoku Sustainable&Renewable Energy Co.Inc. on July 1, 2024.