TEPCO Illustrated

Electricity Supply Facilities
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Hydroelectric Power Station

As of the end of FY2016

Total

  Number of Hydroelectric Power Station Maximum Output (MW)
Total 164 locations 9,870.65MW

Tochigi 23 locations (2,206.3MW)

Name of the water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Nakagawa Sawanagawa Sawanagawa Conduit 0.19 Oct-1925
Kurokawa
Yosasagawa
Kurokawa Conduit 0.92 Jul-1921
Osabigawa
Kosabigawa
Sabigawa Conduit 8 Sep-1961
Akagawa Akagawa Conduit 1.1 Jan-1929
Hokigawa Hokigawa Conduit 4.8 Jul-1943
Nabearisawagawa *Shiobara Dam/Conduit 900 Jun-1994
Tonegawa Kinugawa Kawamata Dam 27 Nov-1963
Kuriyama Conduit 42 Mar-1944
Kinugawa Conduit 127 Nov-1963
Shioya Dam 9.2 Nov-1963
Takenosawa Conduit 8.6 Dec-1922
Nakaiwa Dam 4.6 Jan-1924
Kinugawa
Kodaiyagawa
Michiyabara Conduit 1.9 Aug-1922
Kinugawa Nishi-kinugawa Conduit 1.2 Apr-1928
Togawa *Imaichi Dam/Conduit 1,050 Jul-1988
Togawa Dam 0.24 Jan-2011
Jigokugawa Shobugahama Conduit 0.45 Dec-1916
Daiyagawa Nikko-daiichi Conduit 1.3 May-1918
Nikko-daini Conduit 1.4 Oct-1893
Akazawa Conduit 1.2 Feb-1949
Tokorono-daiichi Conduit 4.2 Apr-1897
Tokorono-daini Conduit 5.6 Mar-1945
Tokorono-daisan Conduit 5.4 Dec-1952

Gunma 42 locations (2,910.84MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Tonegawa Tonegawa 1*,2*Yagisawa Dam 240 Dec-1965
Tonegawa
Naramatagawa
Sudagai Dam 46.2 Sep-1955
Hocchigawa
Tonegawa
*Tamahara Dam/Conduit 1,200 Dec-1982
Tonegawa Fujiwara Dam 22.2 Dec-1956
Tonegawa
Takaragawa
Minakami Conduit 19 Aug-1953
Tonegawa Kamimoku Conduit 31.5 Nov-1958
Tonegawa
Yubisogawa
Komatsu Conduit 13.6 Nov-1922
Tonegawa
Akayagawa
Iwamoto Conduit 29.6 Mar-1949
Tonegawa
Agatsumagawa
Saku Conduit 77.8 Nov-1928
Tonegawa Maebashi Conduit 1.6 Aug-1933
Ayado Conduit 0.67 Apr-1998
Sugenuma
Nikamatagawa
Marunuma Conduit 4.3 Feb-1939
Marunuma
Ojirinuma
Ichinose Conduit 10.7 Dec-1937
Ogawa Shirane Conduit 10.3 Mar-1954
Katashinagawa
Ogawa
Kamata Conduit 11.8 Mar-1954
Katashinagawa
Kasashinagawa
Iosawa
Tokura Conduit 8.8 Oct-1962
Katashinagawa
Kasashinagawa
Sennotaki Conduit 2.8 Dec-1941
Katashinagawa
Ogawa
Nurigawa
Hataya Conduit 9 Nov-1927
Katashinagawa Chidori Conduit 2.3 Dec-1927
Katashinagawa
Hiragawa
Iwamuro Conduit 19.6 Jul-1915
Nerigawa
Akagisawagawa
Nerigawa Conduit 1 Dec-1920
Katashinagawa
Shirosawagawa
Usunegawa
Tazawagawa
Kamikuya Conduit 19 Jun-1925
Katashinagawa Fuseda Conduit 13 Oct-1926
Watarasegawa Fukuoka Conduit 7.4 Jan-1927
Agatsumagawa
Osawagawa
Oyokogawa
Kazawa Conduit 5.6 Oct-1926
Agatsumagawa
Manzagawa
Saikubo Conduit 19 Nov-1933
Agatsumagawa Imai Conduit 7.9 Aug-1925
Haneo Conduit 12.5 Oct-1925
Otsu Dam 2 Dec-1931
Kumagawa Kumagawa-daiichi Conduit 2.4 Mar-1922
Kumagawa-daini Conduit 1.6 Oct-1923
Shirosunagawa Kawanaka Conduit 14.6 Jul-1940
Agatsumagawa
Shirosunagawa
Matsuya Conduit 25.4 Dec-1929
Agatsumagawa
Shirosunagawa
Haramachi Conduit 27.8 Sep-1937
Nurugawa Atsuda Conduit 1.3 Nov-1914
Agatsumagawa
Shimagawa
Hakojima Conduit 24.8 Nov-1951
Agatsumagawa Kanai Conduit 14.2 Dec-1922
Shibukawa Conduit 6.8 Apr-1925
Karasugawa Muroda Conduit 1.3 Dec-1904
Satomi Conduit 1.2 Dec-1918
Kannagawa Torao Conduit 0.27 Nov-2011
Tonegawa
Shinanogawa
Kannagawa
Minamiaikigawa
*Kannagawa Dam/Conduit 940 Dec-2005

Tokyo 1 location (0.05MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Kawadagawa Kawadagawa Mikurajima Conduit 0.05 Sep-1957

Kanagawa 12 locations (45.59MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Ayuzawagawa Ayuzawagawa Mine Conduit 8.9 Mar-1910
Sakawagawa Kochigawa Arashi Conduit 5.7 Aug-1920
Yuzukugawa
Kochigawa
Omatagawa
Ochiai Conduit 7 Mar-1917
Sakawagawa Yamakita Conduit 7 Dec-1914
Uchiyama Conduit 3.9 Jan-1918
Fukuzawa-daiichi Conduit 1.46 Mar-1931
Fukuzawa-daini Conduit 1.03 Mar-1931
Hayakawa Hayakawa Kawakubo Conduit 1.8 Jul-1953
Tonosawa Conduit 3.8 Jul-1909
Yamazaki Conduit 1.5 Oct-1936
Sukumogawa
Osawagawa
Hatajuku Conduit 1.3 Sep-1941
Sukumogawa Sanmaibashi Conduit 2.2 Jul-1918

Yamanashi 29 locations (1,455.88MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Sagamigawa Saiko Saiko Conduit 2 Mar-1919
Katsuragawa Kanegafuchi Conduit 2.6 Mar-1922
Oshino Conduit 0.86 Aug-1922
Katsuragawa
Osanogawa
Shishidome Conduit 18.4 Apr-1914
Katsuragawa
Rankangawa
Shakunagashigawa
Yamura Conduit 15.0 Dec-1920
Katsuragawa Kawamo Dam/Conduit 2.5 Feb-1924
Katsuragawa
Sugenogawa
Asahigawa
Komabashi Conduit 22.2 Dec-1907
Katsuragawa Yatsusawa Conduit 42 Jul-1912
Matsudome Conduit 1.44 Apr-1928
Fujigawa
Sagamigawa
Hikawa
Tsuchimurogawa
*Kazunogawa Dam/Conduit 1,200 Dec-1999
Sagamigawa Tsuchimurogawa Tsuchimurogawa Dam 0.35 Dec-1999
Fujigawa Fujigawa Kamanashigawa-daiichi Conduit 5.8 Dec-1926
Kamanashigawa-daini Conduit 6.2 Nov-1926
Kamanashigawa-daisan Conduit 1 Feb-1938
Komukawa Komukawa-daisan Conduit 2.2 Dec-1927
Komukawa-daiyon Conduit 1.1 Nov-1927
Shiokawa Egusa Conduit 2.4 May-1931
Daimongawa Tsugane Conduit 0.7 Sep-1924
Midaigawa
Kanayamazawagawa
Ashiyasu Conduit 1.3 Apr-1930
Hikawa Hajikano Conduit 1.75 Nov-1918
Kashio Conduit 2.4 May-1923
Arakawa Mitake Conduit 3.8 Aug-1927
Ashigawa Ashigawa-daiichi Conduit 0.47 Aug-1900
Ashigawa-daini Conduit 0.38 Jul-1906
Ashigawa-daisan Conduit 0.53 Jan-1912
Oigawa Oigawa Tashirogawa-daiichi Conduit 17.4 Sep-1927
Tashitogawa-daini Conduit 22.7 Nov-1928
Fujigawa Hayakawa Hayakawa-daiichi Conduit 51.2 Jul-1923
Hayakawa-daisan Conduit 27.2 Dec-1926

Shizuoka 3 locations (18.4MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Ayuzawagawa Sugawa Sugawa Conduit 6 Dec-1912
Ayuzawagawa
Sugawa
Mabusegawa
Suganuma Conduit 6.2 May-1925
Ayuzawagawa
Nozawagawa
Sugawa
Ikido Conduit 6.2 Feb-1930

Nagano 32 locations (2,504.46MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Shinanogawa Chikumagawa Minowa Conduit 5.1 May-1921
Domura-daiichi Conduit 6.8 Dec-1919
Domura-daini Conduit 2.3 Dec-1919
Domura-daisan Conduit 1.05 May-1921
Hozumi Conduit 8 Nov-1925
Kaize Conduit 4.4 Nov-1925
Komoro Conduit 16.2 Sep-1927
Shimagawara Conduit 16.3 Nov-1930
Shiokawa Conduit 8.8 Oct-1938
Saikawa Ikusaka Dam 21 Aug-1964
Taira Dam 15.6 Nov-1957
Minouchi Dam/Conduit 31.6 Jan-1943
Sasadaira Dam 14.7 May-1954
Odagiri Dam 16.9 Aug-1954
Azusagawa Kasumizawa Conduit 39 Nov-1928
Azusagawa
Yugawa
Yugawa Conduit 17.4 Nov-1997
Azusagawa Sawando Conduit 4 Nov-1936
Azusagawa
Midonogawa
*Azumi Dam/Conduit 623 May-1969
Azusagawa *Midono Dam 245 Oct-1969
Inekoki Dam 0.51 Apr-1999
Ryushima Dam/Conduit 32 Jan-1969
Maekawa
Koonogawa
Maekawa Conduit 2 Dec-1927
Oshirakawa Oshirakawa Conduit 3.1 Nov-1925
Shimashimadanigawa Shimashimadani Conduit 2.7 Apr-1938
Takasegawa Takasegawa-daiichi Conduit 3.3 Dec-1922
Takasegawa-daigo Conduit 6.6 Jan-1925
*Shin-Takasegawa Dam/Conduit 1,280 Jun-1979
Nakanosawa Dam/Conduit 42 May-1980
Omachi Dam 13 Apr-1985
Takasegawa Kagogawa Omachishinsegi Omachishinsegi Conduit 1 May-2012
Nakatsugawa
Zakogawa
Kiriake Conduit 20.1 Nov-1955
Tochikawa Tochikawa Conduit 1 Dec-2010

Fukushima 15 locations (354.93MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Aganogawa Inawashiroko Numagami Conduit 2.1 Jun-1899
Takenouchi Conduit 3.7 Jul-1919
Abukumagawa Gohyakugawa Marumori Conduit 5.9 Oct-1921
Aganogawa Hibarako Oguninuma
Onogawako
Nakatsugawa
Nagasegawa
Oshizawagawa
Onogawa Conduit 34.2 Dec-1937
Akimotoko
Nagasegawa
Akimoto Conduit 107.5 Feb-1940
Nagasegawa Numanokura Conduit 18.9 Dec-1946
Inawashiroko
Nippashigawa
Inawashiro-daiichi Conduit 63.4 Oct-1914
Nippashigawa Inawashiro-daini Conduit 37.5 Jun-1918
Inawashiro-daisan Conduit 23.2 Dec-1926
Nippashigawa Conduit 10.6 Apr-1912
Nippashigawa
Otanigawa
Inawashiro-daiyon Conduit 37.1 Nov-1926
Nippashigawa Kanagawa Conduit 6.5 Oct-1919
Inawashiroko
Nippashigawa
Tonokuchizeki-daiichi Conduit 2.08 Feb-1927
Nippashigawa
Kanayamagawa
Tonokuchizeki-daini Conduit 0.85 Jun-1919
Kanayamagawa Tonokuchizeki-daisan Conduit 1.4 Dec-1926

Niigata 7 locations (374.2MW)

Name of water system Name of the river Power station name Type Maximum Output
(MW)
Start of operation
Shinanogawa Nakatsugawa
Zakogawa
Nakatsugawa-daiichi Conduit 127 Sep-1924
Nakatsugawa Nakatsugawa-daini Conduit 22.5 Nov-1922
Shimofunato Conduit 6.1 Jan-1954
Shinanogawa Shinanogawa Conduit 181 Nov-1939
Kiyotsugawa
Asagaigawa
Kassagawa
Kiyotsugawa Conduit 16.3 Dec-1958
Kiyotsugawa Kiyotsugawa Conduit 15.6 May-1923
Uonogawa
Kiyotsugawa
Ishiuchi Conduit 5.7 Nov-1926

(Note)

  1. * indicates pumping-up hydroelectric power station.
  2. * Yagisawa (Unit 2) has been suspended indefinitely from April 2016.