| Rogun Dam | |
|---|---|
|
|
|
| Location | southern Tajikistan |
| Coordinates | |
| Status | Preliminary construction |
| Construction began | 1976 |
| Construction cost | US$2–5 billion |
| Owner(s) | Government of Tajikistan |
| Dam and spillways | |
| Height | 335 metres (1,099 ft) |
| Impounds | Vakhsh River |
| Power station | |
| Turbines | 6 |
| Installed capacity | 3,600 MW (planned) |
| Maximum capacity | 3,600 MW (planned) |
| Annual generation | 13.3 TWh (planned) |
Rogun Dam is an under construction dam on the Vakhsh River in southern Tajikistan. It is one of the planned hydroelectric power plants of Vakhsh Cascade. If finished, it would be the world's tallest dam with a height of 335 metres (1,099 ft) height compared to the second tallest dam Nurek Dam at 300 metres (980 ft). [1] [2]
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The Rogun Dam was first proposed in 1959 and a technical scheme was developed by 1965.[3] Construction began in 1976, however the project was frozen after the collapse of the Soviet Union.[4] An agreement on finishing the construction was signed between Tajikistan and Russia in 1994; however, as the agreement was not implemented, it was denounced by Tajikistan parliament.[5] In October 2004, an agreement was signed with RUSAL according to which RUSAL agreed to complete the Rogun facility, to build a new aluminum plant and to rebuild the Tursunzade Aluminum Smelter.[6] In February 2007, a new partnership between Russia and Tajikistan to complete the dam was announced but later was refused by Russia because of disagreements concerning the controlling stake in the project.[4][6] In May 2008, Takijistan announced that construction on the dam had resumed.[7] By December 2010, one of the river diversion tunnels was renovated and rebuilt and the second expected to commence in June or July 2011.[8]
In 2010, Tajikistan launched an IPO to raise US$1.4 billion to finish construction of the dam.[4] As of April 26, 2010, the Tajik government had raised just US$184 million, enough for two years of construction.[9]
Rogun was listed as the highest dam in the world — 334.98 metres (1,099.0 ft) high — but this is a projected height. In reality the dam was only circa 60.96 metres (200.0 ft) [10] high until 1993 when it was destroyed in a flood.[11] As of 2006[update] two projects are under consideration: the original, 334.98-metre (1,099.0 ft), and an alternative one, 280 to 300 metres (920 to 980 ft), both having their advantages and drawbacks.[12]
The hydroelectric power plant is expected to have six turbines with total capacity of 3,600 MW. When constructed, it expected to produce 13.3 TWh of electrical power per year.[12][13]
In response to the request of the bordering countries and especially Uzbekistan, the World Bank has financed the Techno-Economic Assessment Study (TEAS) conducted by consortium of Coyne et Bellier, Electroconsult and IPA, and Environmental and Social Impact Assessment (ESIA) conducted by Pöyry. The report estimated to be provided by Consultants (Pöyry and Coyne et Bellier) in February 2012.[14]
The project has raised tensions with Uzbekistan over the impact of the dam on its cotton fields' irrigation systems.[13] In February 2010, Uzbek Prime Minister Shavkat Mirziyoyev sent a letter to his Tajik counterpart demanding an independent examination of the possible consequences of the dam.[13][15] During October 2010, Uzbek President Islam Karimov called the Rogun hydropower plants a "stupid project."[16]