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Jinping-I Hydroelectric Power Plant
5:31 AM
Posted by Energetic
The Jinping-I Hydropower Station or Jinping-I Dam, Jinping 1st Cascade or Jinping No.1 Hydraulic Power Station is a large hydroelectric project on the "Jinping Bend" of the Yalong River (Yalong Jjiang) in Sichuan, China. Construction on the project began in 2005 and when complete, it will have a 3600 MW capacity to produce between 16 and 18 TW·h (billion kW·h) annually. Supplying the power station will be a reservoir created by a 305 m tall arch dam, soon to be the tallest in the world. The project's objective is to supply energy for expanding industrialization and urbanization, improve flood protection, and prevent erosion.
The Jinping 1 power station is on the border of the Yanyuan and Muli districts in the autonomous Liangshan Yi area of the Sichuan province. The Yalong River, which the dam will control, is the largest tributary of the Jinsha. For the project, approximately 7,500 inhabitants will be relocated.
The Jinping 1 power station will be supplied with water from a 7.7 billion m3 reservoir created by a 305m tall, 568m long thin double-curvature arch dam made of 7.4 million m3 of material. The power station will contain six 600 MW Francis turbines. Water discharged from the power station can then be diverted by the Jinping 2 Dam to the Jinping 2 Hydropower Station.
The Jinping 1 power station is on the border of the Yanyuan and Muli districts in the autonomous Liangshan Yi area of the Sichuan province. The Yalong River, which the dam will control, is the largest tributary of the Jinsha. For the project, approximately 7,500 inhabitants will be relocated.
The Jinping 1 power station will be supplied with water from a 7.7 billion m3 reservoir created by a 305m tall, 568m long thin double-curvature arch dam made of 7.4 million m3 of material. The power station will contain six 600 MW Francis turbines. Water discharged from the power station can then be diverted by the Jinping 2 Dam to the Jinping 2 Hydropower Station.
Jinping-I | |
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Official name | Jinping-I Hydropower Station |
Locale | Sichuan, China |
Construction began | 2005 |
Opening date | 2014 |
Dam and spillways | |
Height | 305 m (1,001 ft) |
Length | 568 m (1,864 ft) |
Impounds | Yalong River |
Reservoir | |
Creates | Jinping-I Reservoir |
Capacity | 7,700,000,000 m3 (6,200,000 acre·ft) |
Catchment area | 102,560 km2 (39,600 sq mi) |
Surface area | 82 km2 (32 sq mi) |
Power station | |
Turbines | 6 × 600MW |
Installed capacity | 3,600 MW |
Annual generation | 16-18 TWh |
Xiaowan Dam
5:12 AM
Posted by Energetic
The Xiaowan Dam is a large hydroelectric arch dam on the Lancang (Mekong) River in Yunnan Province, southwest China. It is the world's highest arch dam and will be the second largest hydroelectric power station in China after the Three Gorges Dam. Construction started on 1 January 2002. The river was dammed in October 2004. The first generator was commissioned in September 2009 and the dam was complete in March 2010. The first generator was commissioned in September 2009 and the dam was complete in March 2010.
Xiaowan Dam is the highest arch dam in the world with height of 292 m (958 ft). It creates a 15,000,000,000 m3 (5.3×1011 cu ft) reservoir with an area of more than 190 km2 (73 sq mi). The hydroelectric power station will eventually consist of six generating units with generating capacity of 700 MW each. The total generating capacity of the project will be 4,200 MW. The first generator went into operation in September 2009 and the last one is expected in 2013. The cost of the Xiaowan hydropower station is estimated at ¥32 billion (nearly US$3.9 billion). The hydroelectric power station is being constructed and operated by Huaneng Power International.
Xiaowan Dam is the highest arch dam in the world with height of 292 m (958 ft). It creates a 15,000,000,000 m3 (5.3×1011 cu ft) reservoir with an area of more than 190 km2 (73 sq mi). The hydroelectric power station will eventually consist of six generating units with generating capacity of 700 MW each. The total generating capacity of the project will be 4,200 MW. The first generator went into operation in September 2009 and the last one is expected in 2013. The cost of the Xiaowan hydropower station is estimated at ¥32 billion (nearly US$3.9 billion). The hydroelectric power station is being constructed and operated by Huaneng Power International.
Xiaowan Dam | |
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Official name | 小湾坝 |
Status | In use |
Construction began | 1 January 2002 |
Opening date | March 2010 |
Construction cost | US$3.9 billion |
Dam and spillways | |
Height | 292 m (958 ft) |
Reservoir | |
Capacity | 15,000,000,000 m3 (5.3×1011 cu ft) |
Surface area | 190 km2 (73 sq mi) |
Power station | |
Operator(s) | Huaneng |
Commission date | 2009 (first unit) |
Turbines | 6 × 700MW |
Installed capacity | 700 MW |
Maximum capacity | 4,200 MW |
Laxiwa Dam China
6:18 AM
Posted by Energetic
The Laxiwa Dam is an arch dam on the Yellow River in Qinghai Province, northwest China. It is 32 km (20 mi) downstream of the Longyangxia Dam and 73 km (45 mi) upstream from the Lijiaxia Dam. The main purpose of the dam is hydroelectric power generation and it supports the largest station in the Yellow River basin. The facility generates power by utilizing six turbines, each with a generating capacity of 700 MW, totaling to a capacity of 4,200 MW.
By the beginning of 2004, the Yellow River was diverted and in September of that year, excavation on the dam's abutment began. In April 2006, the first concrete was cast and on May 18, 2009, the power plant's first two generators were commissioned. A total of 79,571,000 cubic metres (2.8100×109 cu ft) of earth and rock were excavated from the dam site.
By the beginning of 2004, the Yellow River was diverted and in September of that year, excavation on the dam's abutment began. In April 2006, the first concrete was cast and on May 18, 2009, the power plant's first two generators were commissioned. A total of 79,571,000 cubic metres (2.8100×109 cu ft) of earth and rock were excavated from the dam site.
Laxiwa Dam | |
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Official name | 拉西瓦大坝 |
Locale | Guide County, Qinghai, China |
Opening date | 2009 |
Dam and spillways | |
Type of dam | Arch dam |
Height | 250 m (820 ft) |
Length | 460 m (1,510 ft) |
Volume | 3,681,800 cubic metres (130,020,000 cu ft) |
Impounds | Yellow River |
Reservoir | |
Creates | Laxiwa Reservoir |
Capacity | 1,079,000,000 m3 (875,000 acre·ft) |
Power station | |
Commission date | May 18, 2009 (first two units) |
Turbines | 6 × 700MW |
Installed capacity | 4,200 MW |
Annual generation | 10.23 TWh (mean) |
Paulo Afonso Hydroelectric Complex
6:50 AM
Posted by Energetic
The Paulo Afonso Hydroelectric Complex (Complexo Hidrelétrico de Paulo Afonso), also known as the Paulo Afonso Complex, is a system of three dams and five hydroelectric power plants on the São Francisco River near the city of Paulo Afonso in Bahia, Brazil. The complex exploits an 80 m (260 ft) natural gap on the river, known as the Paulo Afonso Falls. Constructed in succession between 1948 and 1979, the dams support the Paulo Afonso I, II, III, IV and Apollonius Sales (Moxotó) power plants which contain a total of 23 generators with an installed capacity of 4,279.6 MW.
Paulo Afonso I was the first large power plant constructed in Brazil and the complex constitutes the densest area of dams in Brazil. The complex provides electricity to areas in northeastern Brazil and is the main tourist attraction in the region.Apollonius Sales (Moxotó)
The Appollonius Sales Dam and power plant were originally known as Moxotó but were renamed after Appollonius Sales, the founder of CHESF. The dam is a 30 m (98 ft) high, 2,825 m (9,268 ft) long rock and earth-fill embankment dam. The dam withholds a 1,200,000,000 m3 (4.2×1010 cu ft) capacity reservoir with a surface area of 100 km2 (39 sq mi) and catchment area of 630,000 km2 (240,000 sq mi). The dam and its reservoir are primarily intended to regulate water flow to PA I, II and III 4 km (2.5 mi) downstream. On the dam's west side, it supports a 20 floodgate spillway with a 28,000 m3/s (990,000 cu ft/s) capacity. The power plant is located on the east side of the dam near the reservoir's shore and contains four generators, each with Kaplan turbines. Each generator has an nameplate capacity of 100 MW for a total installed capacity of 400 MW.
Paulo Afonso I, II, III
Situated directly on top of the Paulo Afonso Falls, the Delmiro Gouveia Dam supports Paulo Afonso I, II and III. The dam is 20 m (66 ft) high, 4,707 m (15,443 ft) long and is a concrete gravity type. The reservoir formed by the dam has a 26,000,000 m3 (920,000,000 cu ft) capacity and surface area of 4.8 km2 (1.9 sq mi). The dam has one uncontrolled spillway and a controlled spillway on its outer linings while also supporting four controlled spillways on the front of the falls. These four surface spillways when open, discharge water below and essentially recreate the falls.
All three power plants are about 82 m (269 ft) underground and adjacent to one another. PA I lies in the center and is housed in a 60 m (200 ft) long, 31 m (102 ft) high and 15 m (49 ft) wide cavern. It contains three 60 MW generators with Francis turbines, for an installed capacity of 180 MW. The generators are Vertical Sync-type and were manufactured by Westinghouse. The turbines were manufactured by Dominion Engineering Works. PA II is a 104 m (341 ft) long, 36 m (118 ft) high and 18 m (59 ft) wide power house. It contains six Vertical Sync-type generators with Francis turbines. Two of the generators are 70 MW, one is 75 MW and the remaining three are 76 MW, for a total installing capacity of 443 MW. The generators were manufactured by S. Morgan Smith and Hitachi while the turbines by Voith. PA III's power house is 127 m (417 ft) long, 46 m (151 ft) high and 18 m (59 ft) wide. It contains four 198.55 MW Vertical Sync-type generators manufactured by Siemens for an installed capacity of 794.2 MW. Each generator utilizes a Francis turbine manufactured by Voith.
Paulo Afonso IV
The Paulo Afonso Dam located 2 km (1.2 mi) southwest of the falls is 35 m (115 ft) high and 7,430 m (24,380 ft) long. The dam is an earth and rock-fill type but contains 1,053 m (3,455 ft) in length of concrete structures which include the power plant's intake and the spillway. The spillway is composed of eight floodgates and has a maximum discharge capacity of 10,000 m3/s (350,000 cu ft/s). The dam withholds a 127,500,000 m3 (4.50×109 cu ft) capacity reservoir with a surface area of 12.9 km (8.0 mi). The reservoir receives water through a channel that originates near the southern end of the Appolonius Sales Reservoir and continues south, skirting the city. The PA IV power house is also underground and is 210 m (690 ft) long, 52 m (171 ft) high and 24 m (79 ft) wide. It contains six 410.4 MW generators for an installed capacity of 2,462.4 MW. Each generator is a SíncronoVertical-type manufactured by Siemens and utilizes vertical shaft Francis turbines that were manufactured by Voith.Paulo Afonso Hydroelectric Complex | |
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Country | Brazil |
Locale | Paulo Afonso |
Status | Operational |
Commission date | 1954–1979 |
Owner(s) | CHESF |
Power station information | |
Generation units | 23 |
Power generation information | |
Installed capacity | 4,279.6 MW |
Jinping 2 Hydroelectric Power Plant
7:44 AM
Posted by Energetic
The Jinping 2 Hydroelectric Power Plant or Jinping 2 Dam, is a large conventional hydroelectic project on the "Jinping Bend" of the Yalong River (Yalong Jjiang) in Sichuan, China. Construction on the project began in 2007 and when complete, it will have a 4800 MW capacity. While the Jinping 1 will rely on its large dam and reservoir to supply water, the Jinping 2 will rely on four 16.6 km long headrace tunnels that are supplied with water which is diverted by a much smaller dam, which located 7.5 km downstream of Jinping-I dam.
A 37 m tall, 162 m long sluice dam on the west-side of the Jinping bend will divert water into a 16.6 km long headrace tunnel towards the Jinging 2 Power Station. At the power station, the water will spin eight 550 MW Francis turbines with a total capacity of 4400 MW before being discharged back into the river. The dam will be made of 3.4 million m3 of material.
Harnessing hydropower on the Jinping bend of the Yalong River has been in planning for decades. The length of bend is 150 km but the downstream part of the river on the opposite side is only separated by 16 km. Between that distance, there is an elevation drop of 310 m, creating an excellent situation for hydroelectricity production. Two projects were planned for the bend, the Jinping I and Jinping II with a combined capacity of 8,400 MW. Planning for the projects began in the 1960s under the former Sichuan and Shanghai design institutes along with the Ministry of Water Resources and Electric Power. They produced the "Reinvestigation Report on The Yalong River bend (Jinping)". In July 1965, the Jinping Hydropower Engineering Headquarters was set up and designs for the Jinping 1 and Jinping 2 would progress with the East China Investigation and Design Instititute.
Construction on the Jinping 2 started on January 30th of 2007 and is scheduled to be completed in 2014.A 37 m tall, 162 m long sluice dam on the west-side of the Jinping bend will divert water into a 16.6 km long headrace tunnel towards the Jinging 2 Power Station. At the power station, the water will spin eight 550 MW Francis turbines with a total capacity of 4400 MW before being discharged back into the river. The dam will be made of 3.4 million m3 of material.
Jinping-II | |
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Official name | Jinping-II Hydropower Station |
Locale | Sichuan, China |
Construction began | 2007 |
Opening date | 2014 |
Dam and spillways | |
Height | 37 m (121 ft) |
Length | 162 m (531 ft) |
Impounds | Yalong River |
Reservoir | |
Creates | Jinping-II Reservoir |
Capacity | 14,200,000 m3 (11,500 acre·ft) |
Catchment area | 102,663 km2 (39,638 sq mi) |
Power station | |
Turbines | 8 × 600MW |
Installed capacity | 4,800 MW |
Nuozhadu Dam
6:11 AM
Posted by Energetic
Nuozhadu Dam is an embankment dam on the Lancang (Mekong) River in Yunnan Province, southwest China. The dam will be 261.5 m (858 ft) tall, and will create a reservoir with a normal capacity of 21,749,000,000 m3 (17,632,000 acre·ft) at a level of 812 m (2,664 ft) asl. The purpose of the dam is conventional hydroelectric power production along with flood control and navigation. The Nuozhadu Dam will support a power station with nine generators, each with generating capacity of 650 MW. The total generating capacity of the project is 5,850 MW. The construction and management of the project is being implemented by Huaneng Power International Ltd., which has a concession to build, own and operate hydroelectric dams on China's stretch of the Mekong River.
Nuozhadu Dam | |
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Locale | Puer, Yunnan Province |
Opening date | 2015 (estimate) |
Dam and spillways | |
Type of dam | Embankment, central core, rock-fill |
Height | 261.5 m (858 ft) |
Length | 608 m (1,995 ft) |
Crest width | 18 m (59 ft) |
Impounds | Lancang (Mekong) River |
Type of spillway | Service, controlled side channel chute |
Spillway capacity | 31,318 m3/s (1,106,000 cu ft/s) |
Reservoir | |
Creates | Nuozhadu Reservoir |
Capacity | 21,749,000,000 m3 (17,632,000 acre·ft) |
Catchment area | 140,000 km2 (54,000 sq mi) |
Surface area | 320 km2 (120 sq mi) |
Power station | |
Hydraulic head | 187 m (614 ft) |
Turbines | 9 x 650 MW |
Installed capacity | 5,850 MW |
Xiangjiaba Hydroelectric Dam
5:29 AM
Posted by Energetic
The Xiangjiaba Hydorelectric Dam is a large conventional hydroelectric dam on the Jinsha River, a tributary of the Yangtze River in Yunnan Province and Sichuan Province, southwest China. Xiangjiaba Dam is the second largest hydropower project in China after the Three Gorges Dam. As part of a cascade of dams, including the Xiangjiaba, Baihetan, and Wudongde, the Xiluodu seeks to alleviate much of the sedimentation that has been rapidly accumulating behind the Three Gorges. Together with Xiangjiaba, it will generate 12.6 Gigawatts of energy, roughly equal to the Three Gorges's maximum capacity expected in 2015. It will also displace an estimated 180,000 people, mostly from the city of Zhaotong. The Xiangjiaba Dam facility runs on eight turbines, each with a capacity of 800 MW, totalling the generating capacity to 6,400 MW. When completed, it will be the fourth largest dam in China. Construction started on November 26, 2006, and is scheduled for completion in 2015.
Xiangjiaba Dam | |
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Official name | 向家坝 |
Locale | Yunnan, China |
Construction began | 2006-11-26 |
Opening date | 2015 |
Dam and spillways | |
Height | 161 metres (528 ft) |
Impounds | Jinsha River |
Power station | |
Turbines | 8 × 800MW |
Installed capacity | 6,400 MW |
Sayano–Shushenskaya Dam
6:36 AM
Posted by Energetic
The Sayano–Shushenskaya Dam is conventional hydroelectric power plant located on the Yenisei River, near Sayanogorsk in Khakassia, Russia. It is the largest power plant in Russia and the sixth-largest hydroelectric plant in the world, by average power generation. The full legal name of the power plant, OJSC [Open Joint-Stock Society] P. S. Neporozhny Sayano-Shushenskaya HPP [hydro power plant], refers to the Soviet-time Minister of Energy and Electrification Pyotr Neporozhny. The head of the power plant is Valery Kyari.
The Sayano–Shushenskaya hydroelectric power plant is operated by RusHydro. As of 2009, it was the largest power plant in Russia and the world's sixth-largest hydroelectric plant by average power generation. It provides more than a quarter of RusHydro's generation capacity. The plant operated ten type РО-230/833-0-677 hydro turbines manufactured at the Leningradsky Metallichesky Zavod, each with a capacity of 640 MW at 194-metre (636 ft) head. The total installed capacity of the plant is 6,400 MW; its average annual production is 23.5 TWh, which peaked in 2006 at 26.8 TWh.
The station's constructions include the dam, a power plant building located near the dam, and an additional spillway which is under construction. The arch-gravity dam is 245.5 metres (805 ft) high. It has a crest length of 1,066 metres (3,497 ft), crest width of 25 metres (82 ft), base width of 105.7 metres (347 ft) and maximum head of 220 metres (720 ft). It consists of a solid left-bank dam 246.1 metres (807 ft) long, a power dam 331.8 metres (1,089 ft) long, a spillway dam 189.6 metres (622 ft) long and a solid right-bank dam 298.5 metres (979 ft) long. It is by far the larger of only two gravity-arch dams in Russia. Water pressure for the dam is approximately 30 million tons, of which 60% is neutralized by the dam's own weight and 40% is carried to rock on the bank
The dam is constructed to "safely" withstand earthquakes up to 8 on the Richter scale, and was recorded by the Guinness Book of World Records for the strongest construction of its type.
The dam supports the Sayano-Shushenskoe Reservoir, with a total capacity of 31.34 km3, useful capacity of 15.34 km3 and surface area of 621 km2 (240 sq mi).
Sayano-Shushenskaya Dam | |
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Locale | Sayanogorsk, Khakassia, Russia |
Construction began | 1961 |
Opening date | 1978 |
Dam and spillways | |
Type of dam | Arch-gravity dam |
Height | 246 m (807 ft) |
Length | 1,066 m (3,497 ft) |
Crest width | 25 m (82 ft) |
Base width | 105.7 m (347 ft) |
Impounds | Yenisei River |
Spillway capacity | 13,600 m3/s (480,000 cu ft/s) |
Reservoir | |
Creates | Sayano-Shushenskoe Reservoir |
Capacity | 31.3 km3 (7.5 cu mi) |
Surface area | 621 km2 (240 sq mi) |
Power station | |
Type | Yes |
Hydraulic head | 194 m (636 ft) |
Turbines | 10 × 640 MW (initial) 03 × 640 MW (current) |
Installed capacity | 6,400 MW (initial) 1,920 MW (current) |
Maximum capacity | 2,560 MW |
Annual generation | 23.5 TWh |
Longtan Dam - China
7:58 AM
Posted by Energetic
Longtan Dam is a large roller-compacted concrete (RCC) gravity dam on the Hongshui River in Tian'e County of the Guangxi Zhuang Autonomous Region, China, a tributary of the Xi River and the Pearl River. The dam is 216.2 m (709.3 ft) high and 849 m (2,785 ft) long; it is the tallest of its type in the world. The dam is intended for hydroelectric power production, flood control and navigation. The dam contains seven surface spillways, two bottom outlets and an underground power station.
Formal construction of Longtan Dam began on the project July 1, 2001 and the river was diverted by November 2003. A total of 20,000,000 m3 (706,293,334 cu ft) of material were excavated from the dam site. Impounding of the 27,270,000,000 m3 (22,108,149 acre·ft) reservoir began in 2006 and the dam's first of three operational hydroelectric generating units was testing May 2007. In 2009, the last generator became operational and the installed capacity increased to 6,426 MW, its annual generation is estimated at 18.7 TWh.
Formal construction of Longtan Dam began on the project July 1, 2001 and the river was diverted by November 2003. A total of 20,000,000 m3 (706,293,334 cu ft) of material were excavated from the dam site. Impounding of the 27,270,000,000 m3 (22,108,149 acre·ft) reservoir began in 2006 and the dam's first of three operational hydroelectric generating units was testing May 2007. In 2009, the last generator became operational and the installed capacity increased to 6,426 MW, its annual generation is estimated at 18.7 TWh.
Longtan Dam | |
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Official name | 龙滩大坝 |
Country | China |
Locale | Tian'e County, Guangxi |
Status | In use |
Construction began | 1990 |
Opening date | 2009 |
Construction cost | US$4.2 billion |
Owner(s) | Longtan Hydropower Development Co., Ltd. |
Dam and spillways | |
Type of dam | Gravity |
Height | 216.2 m (709 ft) |
Length | 849 m (2,785 ft) |
Volume | 7,670,000 m3 (270,863,494 cu ft) |
Impounds | Hongshui River |
Type of spillway | Service, controlled |
Spillway capacity | 27,134 m3/s (958,228 cu ft/s) |
Reservoir | |
Creates | Longtan Reservoir |
Capacity | 27,270,000,000 m3 (22,108,149 acre·ft) |
Catchment area | 98,500 km2 (38,031 sq mi) |
Power station | |
Commission date | 2007-2009 |
Hydraulic head | 179 m (587 ft) (max.) |
Turbines | 9 × 714 MW |
Installed capacity | 6,426 MW |
Annual generation | 18,700 GWh (estimate) |
Ranganadi Dam
6:09 AM
Posted by Energetic
The Ranganadi Dam is a concrete-gravity diversion dam on the Ranganadi River in Arunachal Pradesh, India which serves a run-of-the-river scheme. The dam is intended for hydroelectric purposes and is part of Stage I of the Ranganadi Hydro Electric Project and supports the 405MW Dikrong Power House. The 68 m (223 ft) tall dam diverts water south into a 10.1 km (6.3 mi) headrace tunnel which is then transferred into a 1,062 m (3,484 ft) penstock before reaching the three 135 MW turbines. Since commissioning, the power house has been generating much less than its capacity because of drought.
Stage II of the project is designed to provide water storage for Stage I and includes a 134 m (440 ft) rock-fill embankment dam with a 523,000,000 m3 (1.85×1010 cu ft) storage capacity. This dam will support an additional 180 MW power house.
Ranganadi Dam | |
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Locale | Arunachal Pradesh, India |
Construction began | 1988 |
Opening date | 2001 |
Owner(s) | North Eastern Electric Power Corporation (NEEPCO) |
Dam and spillways | |
Type of dam | Concrete gravity, diversion |
Height | 68 m (223 ft) |
Length | 339 m (1,112 ft) |
Impounds | Ranganadi River |
Type of spillway | Service, gate-controlled |
Reservoir | |
Creates | Ranganadi Reservoir |
Power station | |
Owner(s) | North Eastern Electric Power Corporation (NEEPCO) |
Commission date | January 2002 |
Turbines | 3 x 135 MW |
Installed capacity | 405 MW |
Gilgel Gibe II Power Station
7:04 AM
Posted by Energetic
The Gilgel Gibe II Power Station is a run of the river hydroelectric power station on the Omo River in Ethiopia. The power station receives water from a tunnel entrance on the Gilgel Gibe River. It has an installed capacity of 420 MW and was inaugurated on January 14, 2010. Almost two weeks after inauguration, a portion of the head race tunnel collapsed causing the station to shut down, repairs are expected to be complete in November 2010.
The Gilgel Gibe II consists of a power station on the Omo River that is fed with water from a headrace tunnel and sluice gate on the Gilgel Gibe River. The headrace tunnel runs 26 km (16 mi) under the Fofa Mountain and at its end, it converts into a penstock with a 500 m (1,600 ft) drop. When the water reaches the power station, it powers four Pelton turbines that operate four 107 MW generators. Each turbine is 3.5 m (11 ft) in diameter.
The Gilgel Gibe II consists of a power station on the Omo River that is fed with water from a headrace tunnel and sluice gate on the Gilgel Gibe River. The headrace tunnel runs 26 km (16 mi) under the Fofa Mountain and at its end, it converts into a penstock with a 500 m (1,600 ft) drop. When the water reaches the power station, it powers four Pelton turbines that operate four 107 MW generators. Each turbine is 3.5 m (11 ft) in diameter.
In 2004, the Government of Ethiopia secured €220 million from the Government of Italy for construction. The total cost of construction is €373 million with €50 million provided by the European Investment Bank, and the remaining €103 million from the Ethiopian Government. Construction on the power plant began on March 19, 2005, with Salini Costruttori as the main contractor. The power station was originally slated to be complete in late 2007 but was delayed because engineering problems encountered during construction. In March 2005, the contract to excavate the tunnel was awarded to SELI and in October 2006, a tunnel boring machine (TBM) hit a fault, delaying the project. On June 9, 2009, both TBMs met each other and the tunnel was ready for hydraulic testing that September. The tunnel is "considered one of the most difficult tunnel projects ever undertaken, due to the critical, and in some reaches, exceptionally adverse, ground conditions." The power station was inaugurated on January 14, 2010.
Tunnel collapse
The exact date is unknown but about ten days after the project was completed, about 15 m (49 ft) of the 26 km (16 mi) headrace tunnel collapsed. The collapse may have been attributed it to structural failure caused by expedited construction and a lack of proper studies. The official statement of the construction firm Salini Costruttori, released two weeks after the official inauguration was that "an unforeseen geological event provoked a 'cave in' and a huge rock fall involving about 15m of the 26km headrace tunnel." The tunnel is expected to be repaired by November 2010.Baglihar Dam-Hydroelectric Power Project,
7:42 AM
Posted by Energetic
Baglihar Dam or Baglihar Hydroelectric Power Project is a run-of-the-river power project on the Chenab River. The Baglihar Dam is located in the southern Doda district of the Indian administered state of Jammu and Kashmir. This planning of the project started in 1992 and was approved in 1996; the construction began in 1999. The Baglihar Dam has the capacity of 900 MW after its completion. The estimated cost of the project is around USD $1 billion. The first phase of the Baglihar Dam was completed in 2004. With the second phase completed, on 10 October 2008, Prime Minister Manmohan Singh of India dedicated the 450-MW Baglihar hydro electric power project to the nation.
After construction began in 1999, Pakistan claimed that design parameters of Baglihar project violated the Indus Water Treaty (full text) of 1960. The Indus Water Treaty provided India with exclusive control over three eastern rivers ,Near Beacon tunnel while granting Pakistan exclusive control to three western rivers, including Chenab River. However it contained provisions for India to establish river-run power projects with limited reservoir capacity and flow control needed for feasible power generation. Availing this provision India established several run-of-the-river projects, with Pakistan objecting to these. Also in the case of the Baglihar and Kishan-Ganga projects, Pakistan claimed that some design parameters were too lax than were needed for feasible power generation and provided India with excessive ability to accelerate, decelerate or block flow of the river, thus giving India a strategic leverage in times of political tension or war.
During 1999-2004 India and Pakistan held several rounds of talks on the design of projects, but could not reach an agreement. After failure of talks on January 18, 2005, Pakistan raised six objections to the World Bank, a broker and signatory of Indus Water Treaty. In April 2005 the World Bank determined the Pakistani claim as a ‘Difference’, a classification between the less serious ‘Question’ and more serious ‘Dispute’, and in May 2005 appointed Professor Raymond Lafitte, a Swiss civil engineer, to adjudicate the difference.
Lafitte declared his final verdict on February 12, 2007, in which he upheld some minor objections of Pakistan, declaring that poundage capacity be reduced by 13.5%, height of dam structure be reduced by 1.5 meter and power intake tunnels be raised by 3 meters, thereby limiting some flow control capabilities of the earlier design. However he rejected Pakistani objections on height and gated control of spillway declaring these conformed to engineering norms of the day. India had already offered Pakistan similar minor adjustments for it to drop its objection. The Indus Waters Treaty of 1960 divided the Indus river — into which the Chenab flows — between the two countries and bars India from interfering with the flow into Pakistan while allowing it to generate electricity. However the key issue that any dam constructed by India should be strictly run of the river was rejected. Pakistan government expressed its disappointment at the final outcome. Both parties (India and Pakistan) have already agreed that they will abide by the final verdict.
The verdict acknowledged India's right to construct 'gated spillways' under Indus water treaty 1960.The report allowed pondage of 32.58 MCM as against India's demand for 37.5 MCM. The report also recommended to reduce the height of freeboard from 4.5 m to 3.0 m.
On June 1, 2010 India and Pakistan resolved the issue relating to the initial filling of Baglihar dam in Jammu and Kashmir with the neighbouring country deciding not to raise the matter further. The decision was arrived at the talks of Permanent Indus Commissioners of the two countries who are meeting. "The two sides discussed the issue at length without any prejudice to each other's stand...Indian and Pakistani teams resolved the issue relating to initial filling of Baglihar dam after discussions," sources said. Pakistan also agreed not to raise the issue further.
Baglihar Dam | |
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Country | India |
Locale | Jammu and Kashmir |
Construction began | 1999 |
Opening date | 2008 |
Dam and spillways | |
Type of dam | Gravity |
Height | 144 m (472 ft) |
Length | 317 m (1,040 ft) |
Volume | 1,800,000 m3 (63,566,400 cu ft) |
Crest elevation | 844.5 m (2,771 ft) |
Spillway capacity | 16,500 m3/s (582,692 cu ft/s) |
Reservoir | |
Active capacity | 15,000,000 m3 (12,161 acre·ft) |
Inactive capacity | 37,000,000 m3 (29,996 acre·ft) |
Power station | |
Commission date | Stage I: 2005 Stage II: 2008 |
Hydraulic head | 130 m (427 ft) (gross) |
Turbines | Stage I: 3 x 150 MW Francis-type Stage II: 3 x 150 MW Francis-type |
Installed capacity | Stage I: 450 MW Stage II: 450 MW Total: 900 MW |
Jinping-II Hydroelectric Plant
7:37 AM
Posted by Energetic
The Jinping-II Hydroelectric Plant or Jinping 2 Dam, is a large run of the river hydroelectic project on the "Jinping Bend" of the Yalong River (Yalong Jjiang) in Sichuan, China. Construction on the project began in 2007 and when complete, it will have a 4800 MW capacity. While the Jinping 1 will rely on its large dam and reservoir to supply water, the Jinping 2 will rely on four 16.6 km long headrace tunnels that are supplied with water which is diverted by a much smaller dam, which located 7.5 km downstream of Jinping-I dam.
A 37 m tall, 162 m long sluice dam on the west-side of the Jinping bend will divert water into a 16.6 km long headrace tunnel towards the Jinging 2 Power Station. At the power station, the water will spin eight 550 MW Francis turbines with a total capacity of 4400 MW before being discharged back into the river. The dam will be made of 3.4 million m3 of material.
A 37 m tall, 162 m long sluice dam on the west-side of the Jinping bend will divert water into a 16.6 km long headrace tunnel towards the Jinging 2 Power Station. At the power station, the water will spin eight 550 MW Francis turbines with a total capacity of 4400 MW before being discharged back into the river. The dam will be made of 3.4 million m3 of material.
Jinping-II | |
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Official name | Jinping-II Hydropower Station |
Locale | Sichuan, China |
Construction began | 2007 |
Opening date | 2014 |
Dam and spillways | |
Height | 37 m (121 ft) |
Length | 162 m (531 ft) |
Impounds | Yalong River |
Reservoir | |
Creates | Jinping-II Reservoir |
Capacity | 14,200,000 m3 (11,500 acre·ft) |
Catchment area | 102,663 km2 (39,638 sq mi) |
Power station | |
Turbines | 8 × 600MW |
Installed capacity | 4,800 MW |
Outardes-2 Hydroelectric Plant
6:30 AM
Posted by Energetic
Outardes-2 is a run-of-the-river hydroelectric power station and dam on the Outardes River 15 km (9.3 mi) southwest of Baie-Comeau, Quebec, Canada. The power station was commissioned in 1978.
Outardes-2 Hydroelectric Plant was built in conjunction with the Manicouagan-Outardes project and is located at the mouth of the Outardes River by Noye Bay. Just west of the power station was another that had been owned and operated by the Quebec North Shore Paper Company since 1937. Instead of raising the reservoir as initially envisioned, Outardes-2 was constructed to better exploit the river flow.Outardes-2 generating station | |
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Country | Canada |
Locale | Baie-Comeau |
Commission date | 1978 |
Owner(s) | Hydro-Québec |
Power station information | |
Generation units | 3 x Francis turbines |
Power generation information | |
Maximum capacity | 523 MW |
Birecik Dam
7:20 AM
Posted by Energetic
The Birecik Dam, one of the 21 dams of the Southeastern Anatolia Project of Turkey, is located on the Euphrates River 60 km (37 mi) downstream of Atatürk Dam and 8 km (5.0 mi) upstream of Birecik town 80 km (50 mi) west of Province of Şanlıurfa in the southeastern region of Turkey. It was purposed for irrigation and energy production. There is a run-of-the-river hydroelectric power plant, established in 2001, at the dam, with a power output of 672MW (six facilities at 112 MW each) can generate an average of 2.5 billion kWh per year. The Birecik dam is a structure constituted of a concrete gravity and clay core sandgravel fill with a height of 62.5 m (205 ft) from the foundation. The total catchment area is 92,700 ha (358 sq mi). The Birecik hydroelectric project will be realized under the status of Build-Operate-Transfer (BOT) model.
Birecik Dam | |
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Locale | Turkey |
Dam and spillways | |
Type of dam | Gravity dam |
Height | 62.5 m (205 ft) |
Impounds | Euphrates River |
Reservoir | |
Creates | Reservoir |
Catchment area | 92,700 ha (358 sq mi) |
Power station | |
Type | Yes |
Turbines | 6 × 112 MW |
Installed capacity | 672 MW |
Annual generation | 2,500 GWh |
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