As of the end of FY2022
Total
| Number of Hydroelectric Power Station | Maximum Output (kW) | |
|---|---|---|
| Total | 164 locations | 9,800,532 |
Tochigi 23 locations (2,206,300kW)
| Name of the water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Nakagawa | Sawanagawa | Sawanagawa | Conduit | 190 | Oct-1925 |
| Kurokawa Yosasagawa |
Kurokawa | Conduit | 920 | Jul-1921 | |
| Osabigawa Kosabigawa |
Sabigawa | Conduit | 8,000 | Sep-1961 | |
| Akagawa | Akagawa | Conduit | 1,100 | Jan-1929 | |
| Hokigawa | Hokigawa | Conduit | 4,800 | Jul-1943 | |
| Nabearisawagawa | *Shiobara | Dam/Conduit | 900,000 | Jun-1994 | |
| Tonegawa | Kinugawa | Kawamata | Dam | 27,000 | Nov-1963 |
| Kinugawa Dorobugawa |
Kuriyama | Conduit | 42,000 | Mar-1944 | |
| Kinugawa | Kinugawa | Conduit | 127,000 | Nov-1963 | |
| Kinugawa | Shioya | Dam | 9,200 | Nov-1963 | |
| Kinugawa | Takenosawa | Conduit | 8,600 | Dec-1922 | |
| Kinugawa | Nakaiwa | Dam | 4,600 | Jan-1924 | |
| Kinugawa Kodaiyagawa |
Michiyabara | Conduit | 1,900 | Aug-1922 | |
| Kinugawa | Nishi-kinugawa | Conduit | 1,200 | Apr-1928 | |
| Togawa | *Imaichi | Dam | 1,050,000 | Jul-1988 | |
| Togawa | Dam | 240 | Jan-2011 | ||
| Jigokugawa | Shobugahama | Conduit | 450 | Dec-1916 | |
| Daiyagawa | Nikko-daiichi | Conduit | 1,300 | May-1918 | |
| Nikko-daini | Conduit | 1,400 | Oct-1893 | ||
| Akazawa | Conduit | 1,200 | Feb-1949 | ||
| Tokorono-daiichi | Conduit | 4,200 | Apr-1897 | ||
| Tokorono-daini | Conduit | 5,600 | Mar-1945 | ||
| Tokorono-daisan | Conduit | 5,400 | Dec-1952 |
Gunma 42 locations (2,833,840kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Tonegawa | Tonegawa | 1*,2*Yagisawa | Dam | 160,000 | Dec-1965 |
| Tonegawa Naramatagawa |
Sudagai | Dam | 46,200 | Sep-1955 | |
| Hocchigawa Tonegawa |
*Tamahara | Dam/Conduit | 1,200,000 | Dec-1982 | |
| Tonegawa | Fujiwara | Dam | 22,200 | Dec-1956 | |
| Tonegawa Takaragawa |
Minakami | Conduit | 19,000 | Aug-1953 | |
| Tonegawa | Kamimoku | Conduit | 31,500 | Nov-1958 | |
| Tonegawa Yubisogawa |
Komatsu | Conduit | 13,600 | Nov-1922 | |
| Tonegawa Akayagawa |
Iwamoto | Conduit | 29,600 | Mar-1949 | |
| Tonegawa Agatsumagawa |
Saku | Conduit | 78,200 | Nov-1928 | |
| Tonegawa | Maebashi | Conduit | 1,600 | Aug-1933 | |
| Ayado | Conduit | 670 | Apr-1998 | ||
| Sugenuma Nikamatagawa |
Marunuma | Conduit | 4,300 | Feb-1939 | |
| Marunuma Ojirinuma |
Ichinose | Conduit | 10,700 | Dec-1937 | |
| Ogawa | Shirane | Conduit | 10,500 | Mar-1954 | |
| Katashinagawa Ogawa |
Kamata | Conduit | 11,800 | Mar-1954 | |
| Katashinagawa Kasashinagawa Iosawa |
Tokura | Conduit | 8,800 | Oct-1962 | |
| Katashinagawa Kasashinagawa |
Sennotaki | Conduit | 3,000 | Dec-1941 | |
| Katashinagawa Ogawa Nurigawa |
Hataya | Conduit | 9,000 | Nov-1927 | |
| Katashinagawa | Chidori | Conduit | 2,300 | Dec-1927 | |
| Katashinagawa Hiragawa |
Iwamuro | Conduit | 19,600 | Jul-1915 | |
| Nerigawa Akagisawagawa |
Nerigawa | Conduit | 1,000 | Dec-1920 | |
| Katashinagawa Shirosawagawa Usunegawa Tazawagawa |
Kamikuya | Conduit | 19,000 | Jun-1925 | |
| Katashinagawa | Fuseda | Conduit | 13,000 | Oct-1926 | |
| Watarasegawa | Fukuoka | Conduit | 7,400 | Jan-1927 | |
| Agatsumagawa Osawagawa Oyokogawa |
Kazawa | Conduit | 5,600 | Oct-1926 | |
| Agatsumagawa Manzagawa |
Saikubo | Conduit | 19,000 | Nov-1933 | |
| Agatsumagawa | Imai | Conduit | 7,900 | Aug-1925 | |
| Haneo | Conduit | 13,000 | Oct-1925 | ||
| Otsu | Dam | 2,000 | Dec-1931 | ||
| Kumagawa | Kumagawa-daiichi | Conduit | 2,700 | Mar-1922 | |
| Kumagawa-daini | Conduit | 1,600 | Oct-1923 | ||
| Shirosunagawa | Kawanaka | Conduit | 14,600 | Jul-1940 | |
| Agatsumagawa Shirosunagawa |
Matsuya | Conduit | 25,400 | Dec-1929 | |
| Agatsumagawa Shirosunagawa |
Haramachi | Conduit | 27,800 | Sep-1937 | |
| Nurugawa | Atsuda | Conduit | 1,300 | Nov-1914 | |
| Agatsumagawa Shimagawa |
Hakojima | Conduit | 26,200 | Nov-1951 | |
| Agatsumagawa | Kanai | Conduit | 14,200 | Dec-1922 | |
| Shibukawa | Conduit | 6,800 | Apr-1925 | ||
| Karasugawa | Muroda | Conduit | 1,300 | Dec-1904 | |
| Satomi | Conduit | 1,200 | Dec-1918 | ||
| Kannagawa | Torao | Conduit | 270 | Nov-2011 | |
| Tonegawa Shinanogawa |
Kannagawa Minamiaikigawa |
*Kannagawa | Dam/Conduit | 940,000 | Dec-2005 |
Tokyo 1 location (50kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Kawadagawa | Kawadagawa | Mikurajima | Conduit | 50 | Sep-1957 |
Kanagawa 12 locations (45,590kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Ayuzawagawa | Ayuzawagawa | Mine | Conduit | 8,900 | Mar-1910 |
| Sakawagawa | Kochigawa | Arashi | Conduit | 5,700 | Aug-1920 |
| Yuzukugawa Kochigawa Omatagawa |
Ochiai | Conduit | 7,000 | Mar-1917 | |
| Sakawagawa | Yamakita | Conduit | 7,000 | Dec-1914 | |
| Uchiyama | Conduit | 3,900 | Jan-1918 | ||
| Fukuzawa-daiichi | Conduit | 1,460 | Mar-1931 | ||
| Fukuzawa-daini | Conduit | 1,030 | Mar-1931 | ||
| Hayakawa | Hayakawa | Kawakubo | Conduit | 1,800 | Jul-1953 |
| Tonosawa | Conduit | 3,800 | Jul-1909 | ||
| Yamazaki | Conduit | 1,500 | Oct-1936 | ||
| Sukumogawa Osawagawa |
Hatajuku | Conduit | 1,300 | Sep-1941 | |
| Sukumogawa | Sanmaibashi | Conduit | 2,200 | Jul-1918 |
Yamanashi 29 locations (1,461,002kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Sagamigawa | Saiko | Saiko | Conduit | 2,000 | Mar-1919 |
| Katsuragawa | Kanegafuchi | Conduit | 2,660 | Mar-1922 | |
| Oshino | Conduit | 860 | Aug-1922 | ||
| Katsuragawa Osanogawa |
Shishidome | Conduit | 18,400 | Apr-1914 | |
| Katsuragawa Rankangawa Shakunagashigawa |
Yamura | Conduit | 15,500 | Dec-1920 | |
| Katsuragawa | Kawamo | Dam/Conduit | 2,500 | Feb-1924 | |
| Katsuragawa Sugenogawa Asahigawa |
Komabashi | Conduit | 22,400 | Dec-1907 | |
| Katsuragawa | Yatsusawa | Conduit | 42,000 | Jul-1912 | |
| Matsudome | Conduit | 1,440 | Apr-1928 | ||
| Fujigawa Sagamigawa |
Hikawa Tsuchimurogawa |
*Kazunogawa | Dam/Conduit | 1,200,000 | Dec-1999 |
| Sagamigawa | Tsuchimurogawa | Tsuchimurogawa | Dam | 350 | Dec-1999 |
| Fujigawa | Fujigawa | Kamanashigawa-daiichi | Conduit | 5,800 | Dec-1926 |
| Kamanashigawa-daini | Conduit | 6,200 | Nov-1926 | ||
| Kamanashigawa-daisan | Conduit | 1,000 | Feb-1938 | ||
| Komukawa | Komukawa-daisan | Conduit | 2,200 | Dec-1927 | |
| Komukawa-daiyon | Conduit | 1,100 | Nov-1927 | ||
| Shiokawa | Egusa | Conduit | 2,400 | May-1931 | |
| Daimongawa | Tsugane | Conduit | 760 | Sep-1924 | |
| Midaigawa Kanayamazawagawa |
Ashiyasu | Conduit | 1,300 | Apr-1930 | |
| Hikawa | Hajikano | Conduit | 1,750 | Nov-1918 | |
| Kashio | Conduit | 2,400 | May-1923 | ||
| Arakawa | Mitake | Conduit | 3,800 | Aug-1927 | |
| Ashigawa | Ashigawa-daiichi | Conduit | 470 | Aug-1900 | |
| Ashigawa-daini | Conduit | 380 | Jul-1906 | ||
| Ashigawa-daisan | Conduit | 627 | Jan-1912 | ||
| Oigawa Fujigawa |
Oigawa Uchikouchigawa Tsuduragouchigawa Nigorizawagawa |
Tashirogawa-daiichi | Conduit | 17,400 | Sep-1927 |
| Oigawa Horisawagawa Uchikouchigawa |
Tashitogawa-daini | Conduit | 22,700 | Nov-1928 | |
| Fujigawa | Hayakawa | Hayakawa-daiichi | Conduit | 54,200 | Jul-1923 |
| Hayakawa-daisan | Conduit | 28,405 | Dec-1926 |
Shizuoka 3 locations (18,400kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Ayuzawagawa | Sugawa | Sugawa | Conduit | 6,000 | Dec-1912 |
| Ayuzawagawa Sugawa Mabusegawa |
Suganuma | Conduit | 6,200 | May-1925 | |
| Ayuzawagawa Nozawagawa Sugawa |
Ikido | Conduit | 6,200 | Feb-1930 |
Nagano 32 locations (2,504,800kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Shinanogawa | Chikumagawa | Minowa | Conduit | 5,100 | May-1921 |
| Domura-daiichi | Conduit | 6,800 | Dec-1919 | ||
| Domura-daini | Conduit | 2,300 | Dec-1919 | ||
| Domura-daisan | Conduit | 1,050 | May-1921 | ||
| Hozumi | Conduit | 8,000 | Nov-1925 | ||
| Kaize | Conduit | 4,400 | Nov-1925 | ||
| Komoro | Conduit | 16,200 | Sep-1927 | ||
| Shimagawara | Conduit | 16,300 | Nov-1930 | ||
| Shiokawa | Conduit | 8,800 | Oct-1938 | ||
| Saikawa | Ikusaka | Dam | 21,000 | Aug-1964 | |
| Taira | Dam | 15,600 | Nov-1957 | ||
| Minouchi | Dam/Conduit | 31,600 | Jan-1943 | ||
| Sasadaira | Dam | 14,700 | May-1954 | ||
| Odagiri | Dam | 16,900 | Aug-1954 | ||
| Azusagawa | Kasumizawa | Conduit | 39,000 | Nov-1928 | |
| Azusagawa Yugawa |
Yugawa | Conduit | 17,400 | Nov-1997 | |
| Azusagawa | Sawando | Conduit | 4,000 | Nov-1936 | |
| Azusagawa Midonogawa |
*Azumi | Dam/Conduit | 623,000 | May-1969 | |
| Azusagawa | *Midono | Dam | 245,000 | Oct-1969 | |
| Inekoki | Dam | 510 | Apr-1999 | ||
| Ryushima | Dam/Conduit | 32,000 | Jan-1969 | ||
| Maekawa Koonogawa |
Maekawa | Conduit | 2,000 | Dec-1927 | |
| Oshirakawa | Oshirakawa | Conduit | 3,100 | Nov-1925 | |
| Shimashimadanigawa | Shimashimadani | Conduit | 2,700 | Apr-1938 | |
| Takasegawa | Takasegawa-daiichi | Conduit | 3,400 | Dec-1922 | |
| Takasegawa-daigo | Conduit | 6,600 | Jan-1925 | ||
| *Shin-Takasegawa | Dam/Conduit | 1,280,000 | Jun-1979 | ||
| Nakanosawa | Dam/Conduit | 42,000 | May-1980 | ||
| Omachi | Dam | 13,200 | Apr-1985 | ||
| Kagogawa | Omachishinsegi | Conduit | 1,040 | May-2012 | |
| Nakatsugawa Zakogawa |
Kiriake | Conduit | 20,100 | Nov-1955 | |
| Tochikawa | Tochikawa | Conduit | 1,000 | Dec-2010 |
Fukushima 15 locations (355,250kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Aganogawa | Inawashiroko | Numagami | Conduit | 2,100 | Jun-1899 |
| Aganogawa Abukumagawa |
Inawashiroko Gohyakugawa |
Takenouchi | Conduit | 3,700 | Jul-1919 |
| Abukumagawa | Gohyakugawa Hisawagawa Sainosawagawa |
Marumori | Conduit | 5,900 | Oct-1921 |
| Aganogawa | Hibarako Oguninuma Onogawako Nakatsugawa Nagasegawa Oshizawagawa |
Onogawa | Conduit | 34,200 | Dec-1937 |
| Akimotoko Nagasegawa |
Akimoto | Conduit | 107,500 | Feb-1940 | |
| Nagasegawa | Numanokura | Conduit | 18,900 | Dec-1946 | |
| Inawashiroko Nippashigawa |
Inawashiro-daiichi | Conduit | 63,400 | Oct-1914 | |
| Nippashigawa | Inawashiro-daini | Conduit | 37,500 | Jun-1918 | |
| Inawashiro-daisan | Conduit | 23,200 | Dec-1926 | ||
| Nippashigawa | Conduit | 11,000 | Apr-1912 | ||
| Nippashigawa Otanigawa |
Inawashiro-daiyon | Conduit | 37,100 | Nov-1926 | |
| Nippashigawa | Kanagawa | Conduit | 7,100 | Oct-1919 | |
| Inawashiroko Nippashigawa |
Tonokuchizeki-daiichi | Conduit | 2,080 | Feb-1927 | |
| Nippashigawa Kanayamagawa |
Tonokuchizeki-daini | Conduit | 630 | Jun-1919 | |
| Kanayamagawa | Tonokuchizeki-daisan | Conduit | 940 | Dec-1926 |
Niigata 7 locations (375,300kW)
| Name of water system | Name of the river | Power station name | Type | Maximum Output (kW) |
Start of operation |
|---|---|---|---|---|---|
| Shinanogawa | Nakatsugawa Zakogawa |
Nakatsugawa-daiichi | Conduit | 127,000 | Sep-1924 |
| Nakatsugawa | Nakatsugawa-daini | Conduit | 22,500 | Nov-1922 | |
| Shimofunato | Conduit | 6,600 | Jan-1954 | ||
| Shinanogawa | Shinanogawa | Conduit | 181,000 | Nov-1939 | |
| Kiyotsugawa Asagaigawa Kassagawa |
Kiyotsugawa | Conduit | 16,300 | Dec-1958 | |
| Kiyotsugawa | Kiyotsugawa | Conduit | 16,100 | May-1923 | |
| Uonogawa Kiyotsugawa |
Ishiuchi | Conduit | 5,800 | Nov-1926 |
(Note)
- * indicates pumping-up hydroelectric power station.
- * Yagisawa was abolished in November 2022.
