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Hydroelectricity In Japan
Hydroelectricity is the second most important renewable energy source after solar energy in Japan with an installed capacity of 50.0 gigawatt (GW) as of 2019. According to the International Hydropower Association Japan was the world's sixth largest producer of hydroelectricity in 2020. Most of Japanese hydroelectric power plants are pumped-storage plants. Conventional hydropower plants account for about 20 GW out of the total installed capacity as of 2007. Conventional hydropower potential of Japan is considered to be almost fully developed, with little opportunity for further capacity increase. In recent years, almost exclusively pumped storage plants were commissioned, significantly increasing the ratio of pumped storage capacity over conventional hydro. The large capacity of pumped storage hydropower was built to store energy from nuclear power plants, which until the Fukushima Daiichi nuclear disaster, Fukushima disaster constituted a large part of Japan electricity generation. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectricity
Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other Renewable energy, renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of Low-carbon power, low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hatanagi-II Hydroelectric Dam
The is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. A hollow-core concrete gravity dam, it has a hydroelectric power generating station owned by the Chubu Electric Power Company. History The potential of the Ōi River valley for hydroelectric power development was realized by the Meiji government at the start of the 20th century. The Ōi River was characterized by a high volume of flow and a fast current. Its mountainous upper reaches and tributaries were areas of steep valleys and abundant rainfall, and were sparsely populated. Design work began in 1902 by the and the first dam on the Ōi River (the Tashiro Dam) was completed in 1927. Further work was suspended by the Great Depression of the 1930s, and World War II in the 1940s. However, by the early 1950s, Japan’s need for electrical energy was growing exponentially. The Ōigawa Railway Ikawa Line was expanded to facilitate dam construction, and the newly created Chubu E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maruyama Dam
The is a dam on the border of Mitake and Yaotsu in Gifu Prefecture, Japan. It was built on the upper reaches of the Kiso River system. It is a gravity dam that is tall. It was built after World War II as part of a large, nationwide dam building project. Surrounding area Sosui Gorge (蘇水峡 ''Sosui-kyō'') was formed by the completion of the dam. Along with Ena Gorge is a river valley located at the mid reaches of the Kiso River, which runs through the cities of Ena and Nakatsugawa in Gifu Prefecture, Japan. Ena Gorge was so named by Shiga Shigetaka, a geographer of that time who praised the harmony of th ... further upstream, the area is part of the Hida-Kisogawa Quasi-National Park. References Dams in Gifu Prefecture Hydroelectric power stations in Japan Dams completed in 1955 1955 establishments in Japan {{Japan-powerstation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuroda Dam
The Kuroda Dam (黒田ダム) is a dam in the city of Toyota in the Aichi Prefecture of Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north .... Hydroelectric power stations in Japan Dams in Aichi Prefecture Dams completed in 1980 {{Japan-powerstation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kurobe Dam
The or , is a high variable-radius arch dam on the Kurobe River in Toyama Prefecture, Japan. The tallest dam in Japan, it supports the 335 MW Kurobe No. 4 Hydropower Plant and is owned by Kansai Electric Power Company. It was constructed between 1956 and 1963 at a cost of ¥51.3 billion yen. The project was a difficult engineering feat for the rapidly growing post–World War II Japan, and claimed the lives of 171 people. History In 1951, the Kansai Electric Power Company was formed to provide electric power for the Kansai region of Japan. Shortly after their formation, the area suffered from drought which caused power rationing. The drought along with the rapid growth of post–World War II Japan pushed the company to increase their generating capacity. After a series of geological and hydrological studies of the Kurobe River and Gorge, it was announced in late 1955 that the Kurobe Dam would be constructed. In July 1956, construction on the dam began. Problems quickly arose w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kisenyama Pumped Storage Plant
The is an arch dam on the Uji River just upstream from Uji, Kyoto Prefecture, Japan. The main purpose of the dam is flood control but it supports a hydroelectric power station and creates the lower reservoir for the Kisenyama Pumped Storage Plant. The dam itself serves a 92 MW power station while the pumped-storage power station upstream has a 466 MW capacity. Construction on the dam began in 1955 and it was complete in 1964. The pumped-storage power station became operational in 1970. Both plants are owned by Kansai Electric Power Company. Design The dam is a tall, long variable-radius arch type with structural volume of . The dam withholds a reservoir called of of which is active or "useful" storage. It has a surface area of . The dam's spillway consists of four x floodgates on its crest with a maximum discharge capacity of . In the middle of the dam body, there are three x gate-controlled orifice openings with a maximum discharge of . The dam's power station has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazunogawa Pumped Storage Plant
The Kazunogawa Pumped Storage Power Station is a pumped-storage hydroelectric power station near Kōshū in Yamanashi Prefecture, Japan. The station is designed to have an installed capacity of and three of the four generators are currently operational, for a total operational capacity of 1200 MW. Construction on the power station began in 1993 and the first generator was commissioned on 3 December 1999. The second was commissioned on 8 June 2000. The third one became operational on 9 June 2014, six year early due to post-power demand from the Great East Japan earthquake. The fourth and final generator is slated to be commissioned by 2024. It is owned by TEPCO and was constructed at a cost of US$2.2 billion. Design and operation The upper reservoir for the power station is created by the Kamihikawa Dam at which is a tall and long rock-fill embankment type. It has a fill volume of . The upper reservoir's capacity is of which is active (or "useful) for power generation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kannagawa Hydropower Plant
The Kannagawa Hydropower Plant (神流川発電所) is an under construction pumped-storage hydroelectric power plant near Minamiaiki in Nagano Prefecture and Ueno, Gunma, Ueno in Gunma Prefecture, Japan. The power plant utilizes the Minamiaiki River along with an upper and lower reservoir created by two dams, the upper Minamiaiki Dam and the lower Ueno Dam. The power station in between the two dams will contain six pump-generators for a total installed capacity of . Unit 1 commenced commercial operation in 2005 and Unit 2 in 2012. When completed, the plant will have the second-largest (after Bath County Pumped Storage Station) pumped-storage power capacity in the world. Construction In July 1993, the Kannagawa Hydropower Field Survey Office was initiated and in July 1995, the power plant was approved by the Electric Power Development Coordination Council. In May 1997, construction on the project began and by October 2003, the area behind the Ueno Dam was being inundated with wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaichi Pumped Storage Plant
The Imaichi Dam (今市ダム) is a concrete gravity dam on the Togawa River located west of Nikkō in Tochigi Prefecture, Japan. The dam serves as the lower reservoir for the Imaichi Pumped Storage Power Station, while the Kuriyama Dam forms the upper. It is owned by TEPCO and was constructed between 1979 and 1986. The reservoir can store of water. Of that storage volume, can be used for power generation. Imaichi Pumped Storage Power Station The power plant operates using the pumped storage hydroelectric method. During periods of high electricity demand, water is sent from the upper Kuriyama Reservoir to the power plant which contains 3 x Francis pump turbines. Water discharged from the power plant then enters the Imaichi Reservoir. When demand is low, the pump-generators reverse mode and pump water from the lower reservoir back up to the upper. The process repeats as needed. See also * List of dams and reservoirs in Japan As a nation of islands and narrow, steep va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
