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Rogun Dam
View on WikipediaThe Roghun Dam (Russian: Рогунская ГЭС; Tajik: Нерӯгоҳи барқи обии Роғун) is an embankment dam under construction on the Vakhsh River in southern Tajikistan. The dam is situated 110 km from Dushanbe. It is one of the planned hydroelectric power plants of Vakhsh Cascade.
Key Information
Construction of the dam began in the Soviet era, in 1976, but was abandoned in 1993 after the collapse of the Soviet Union. Over three decades only preliminary construction had been carried out on the dam. Due to its controversial state, construction was suspended in August 2012 pending World Bank reports. The project was restarted by the Tajik government in 2016.[8] The power plant's first unit was commissioned in November 2018 and second in September 2019, both on lower hydraulic head.[9]
Since the time both were part of the USSR, the dam has been steadily opposed by the government of the neighbouring Uzbekistan, which fears it will negatively impact its lucrative cotton crops. The dispute over the project has contributed significantly to bitter relations between the two former Soviet republics.
History
[edit]The Roghun Dam was first proposed in 1959 and a technical scheme was developed by 1965.[10] Construction began in 1976, however the project stalled after the collapse of the Soviet Union.[11] An agreement on finishing the construction was signed between Tajikistan and Russia in 1994. Since the agreement was not implemented, it was denounced by Tajikistan parliament.[12] In October 2004, an agreement was signed with RUSAL in which RUSAL agreed to complete the Rogun facility, to build a new aluminum plant and to rebuild the Tursunzade Aluminum Smelter.[13] In February 2007, a new partnership between Russia and Tajikistan to complete the dam was announced, but later was refused by Russia because of disagreement concerning the controlling stake in the project.[11][13] In May 2008, Tajikistan announced that construction of the dam had resumed.[14] By December 2010, one of the river diversion tunnels was renovated and the second expected to commence in June or July 2011.[15] Construction of the dam was suspended in August 2012 pending the World Bank assessment.[16]



In 2010, Tajikistan launched an IPO to raise US$1.4billion to finish construction of the dam.[11] By April 26 of that year the Tajik government had raised just US$184 million, enough for two years of construction.[17] On July 1, 2016 the state commission in charge of the project had chosen the Italian company Salini Impregilo to carry out the construction for $3.9 billion. The project is broken down into four components, with the most expensive one involving the building of a 335-meter-high rockfill dam which will entail costs of around $1.95 billion.[18] On October 29, 2016 Tajik president Emomali Rahmon officially launched the construction of the dam. At the ceremony, the river's flow was ceremonially diverted through the reconstructed diversion tunnels. The power plant's first unit was commissioned in November 2018 and second in September 2019.[9]

In mid-July 2022 concrete pouring commenced on the main dam core.
Technical description
[edit]Rogun was listed as the highest dam in the world for many years — 335 metres (1,099 ft) high — but this was only ever a projected height. In reality the dam was only circa 60.96 metres (200.0 ft) [19] high until 1993 when it was destroyed in a flood.[20] As of 2014[update] three projects are under consideration: the original, 335-metre (1,099 ft), and two alternatives, 300-metre (980 ft) and 265-metre (869 ft), all having their advantages and drawbacks.[21]
The hydroelectric power plant is expected to have six turbines with combined capacity of 3600 MW. When complete, it is expected to produce 17.1 TWh of electrical work per year.[22]
Impact assessment
[edit]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 Energy + Water Economics, and Environmental and Social Impact Assessment (ESIA) conducted by Pöyry.[23] The reports, originally slated to be released in February 2012, were delayed until mid-2014. The ESIA was published on 16 June 2014 and the TEAS in July 2014. Overall, the ESIA stated that "Most impacts are rather small and easily mitigated, if mitigation is required at all." and that "There is no impact of the category "strong negative, mitigation not possible", which would have to be considered as a no-go for the project." All parties, including Central Asian states met in Almaty in July 2014 for the 5th Riparian Meeting to discuss findings within the TEAS and ESIA.[24][25][26][27][28]

International tensions
[edit]The project has raised tensions with Uzbekistan over a decrease in the downstream water flow the country needs for its irrigated agriculture (particularly cotton).[29][30] 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.[29][31] During October 2010, Uzbek President Islam Karimov called the Rogun hydropower plants a "stupid project."[32]
However, in 2018 Uzbekistan dropped its opposition to the Rogun Dam. "Go ahead and build it, but we hold to certain guarantees in accordance with these conventions that have been signed by you," Uzbek Foreign Minister Abdulaziz Komilov said in a televised appearance on July 5, 2018.[33]
References
[edit]- ^ "Tajikistan celebrates independence with launch of second Rogun dam turbine – Embassy of Tajikistan in Malaysia".
- ^ Министерство энергетики и водных ресурсов республики Таджикистан
- ^ 17 млрд киловаттов в год: Рогунская ГЭС – самая мощная в Центральной Азии
- ^ «Храм света нации»: старт Рогунской ГЭС дан
- ^ Оғози бунёди сарбанди Нерӯгоҳи барқи обии Роғун // PRESIDENT.TJ — 29 октябри 2016, 12:29
- ^ На Рогунской ГЭС запущен первый агрегат
- ^ Рогун заработает уже осенью. Но остаются вопросы и возникают новые, "Вестник Кавказа", 11 июля 2018 года.
- ^ Ariana. "Beginning Rogun Powerhouse intake & outlet tower operation". www.ariana-co.com. Archived from the original on 2018-05-08. Retrieved 2018-05-07.
- ^ a b "Tajikistan President starts first turbine of Rogun hydroelectric dam being developed by Salini Impregilo - Salini Impregilo". www.salini-impregilo.com. Retrieved 2018-11-27.
- ^ Erica Marat (2010-01-15). "Will Tajikistan Successfully Construct Rogun?". Eurasia Daily Monitor. Jamestown Foundation. Retrieved 2010-02-13.
- ^ a b c
Yuriy Humber; Ilya Khrennikov (2010-01-15). "Tajikistan Plans People's IPO for Hydropower 'Plant of Destiny'". Bloomberg. Retrieved 2010-02-13.
{{cite news}}: CS1 maint: multiple names: authors list (link) - ^ "Tajikistan: Unfinished construction of Rogun HPS is more than $1.2bn worth". Regnum. 2006-11-01. Retrieved 2011-03-11.
- ^ a b "Russia to complete Rogun hydroelectric plant in Tajikistan". Interfax. Portal of Knowledge for Water and Environmental Issues in Central Asia. 2007-02-18. Archived from the original on 2009-06-25. Retrieved 2010-02-13.
- ^ "Central Asia: long-term challenges and short-term crises". International Water Power and Dam Construction. Retrieved 13 March 2011.
- ^ "Construction works in the first building the tunnel on Rogun" (in Russian). Avesta. 8 December 2010. Retrieved 13 March 2011.
- ^ "Tajikistan has suspended the construction of the Rogun" (in Russian). Korrespondent. 5 August 2012. Retrieved 3 June 2013.
- ^ "Tajikistan to Allow Roghun Shares on the Market". Radio Free Europe; Radio Liberty. 2010-04-26. Retrieved 2010-04-28.
- ^ Tajikistan: Italians Picked for Rogun Dam Contract
- ^ "Rogun Web-site". Rogun Web-site. 2010-05-26. Retrieved 2010-05-26.[permanent dead link]
- ^ "CISRG Database (Dams Database: Rogun, Tadjikistan)". CISRG. Retrieved 1 November 2010.
- ^ Savchenkov, N.G. (2006-12-09). "РОГУНСКАЯ ПЛОТИНА (ВЫСОТА ПРОЕКТНАЯ ИЛИ УСЕЧЕННАЯ) "Rogun Dam (Height: Projected or Truncated)". Vechernyi Dushanbe. Portal of Knowledge for Water and Environmental Issues in Central Asia. Archived from the original on 2022-04-20. Retrieved 2010-02-13.
- ^ "Tajikistan-Uzbekistan: Top level discussions over the Rogun project". Tajik Water. Archived from the original on December 10, 2013. Retrieved 26 July 2016.
- ^ "Assessment Studies for Proposed Rogun Regional Water Reservoir and Hydropower Project in Tajikistan". The World Bank. 2010-12-10. Retrieved 2011-03-11.
- ^ Botting, Alexander (6 March 2013). "Rogun Dam: The Waiting Game". Diplomatic Courier. Archived from the original on 18 July 2013. Retrieved 3 June 2013.
- ^ "Environmental and Social Impact Assessment for Rogun Hydro Power Plant" (PDF). ESIA Report (Draft) Vol. III: Preliminary Environmental and Social Management Plan. Pöyry, World Bank. 16 June 2014. Retrieved 17 July 2014.
- ^ "Techno-Economic Assessment Study for Rogun Hydroelectric Construction Project" (PDF). Coyne et Bellier. July 2014. Retrieved 17 July 2014.
- ^ "Fifth Information-Sharing and Consultation Meeting on the Assessment Studies of the Proposed Rogun Hydropower Project (HPP)". World Bank.
- ^ "Fifth Information-Sharing and Consultation Meeting on the Assessment Studies of the Proposed Rogun Hydropower Project (HPP)". World Bank. 18 July 2014. Retrieved 17 July 2014.
- ^ a b "Tajikistan-Uzbekistan: Top level discussions over the Rogun project". Ferghana.ru. 2010-02-04. Retrieved 2010-02-13.
- ^ Menga, Filippo (May 2015). "Building a nation through a dam: the case of Rogun in Tajikistan". Nationalities Papers. 43 (3): 479–494. doi:10.1080/00905992.2014.924489. ISSN 0090-5992. S2CID 129462269.
- ^ Farangis Najibullah (2010-02-03). "Uzbekistan Worried About Tajik Power Plant's Effect On 'Frail' Environment". Radio Free Europe/Radio Liberty. Retrieved 2010-02-13.
- ^ Farangis Najibullah (2010-10-08). "Don't Love Your Neighbor". Radio Free Europe/Radio Liberty. Retrieved 2011-03-11.
- ^ Uzbekistan and Tajikistan: No more dam problems?
Rogun Dam
View on GrokipediaLocation and Strategic Context
Geographical and Hydrological Setting
The Rogun Dam site is located on the Vakhsh River in southern Tajikistan, approximately 110 kilometers southeast of the capital city Dushanbe and upstream of the existing Nurek Hydropower Plant. Situated in the central mountainous region amid the Pamir Mountains—one of Central Asia's principal ranges—the terrain features high elevations, steep gradients, narrow canyons, and intense geological folding, providing a natural foundation for large-scale impoundment.[11][3][12] The Vakhsh River, a key tributary of the Amu Darya, originates from glacial melt and snowfields in the Pamir Mountains, draining a basin marked by rapid elevation drops that enhance its hydropower viability. Flowing westward through Tajikistan's rugged valleys, the river accumulates sediment from upstream erosion processes before reaching the Rogun site, after which it continues downstream to support irrigation and energy needs in lower riparian states like Uzbekistan. Seasonal hydrology is dominated by high summer discharges from meltwater and lower winter flows, with extreme flood events posing design challenges—probable maximum flood (PMF) estimates range from 7,500 to 7,770 cubic meters per second, and 1-in-10,000-year floods from 5,600 to 5,700 cubic meters per second.[13][14][15] This setting positions Rogun as a strategic regulator in the Vakhsh cascade, enabling storage of seasonal runoff to mitigate downstream variability while harnessing the river's substantial mean annual discharge for electricity generation. The upstream location relative to shared basins underscores transboundary implications, as regulated flows could alter water availability for agriculture in the arid downstream regions of the Amu Darya.[8][16]National Energy and Development Goals
The Rogun Hydropower Plant (HPP) forms a cornerstone of Tajikistan's strategy to achieve full energy independence by 2027, addressing chronic domestic shortages and reliance on seasonal hydropower that leads to winter blackouts and imports from neighboring countries.[17] [18] With an installed capacity of 3,600 megawatts upon completion, the project is projected to double the country's total electricity production, enabling surplus exports estimated at up to 70% of output to Central Asian markets and beyond, thereby generating revenue for infrastructure and economic diversification.[10] [13] [18] This aligns with Tajikistan's broader development objectives, including poverty alleviation in a nation where per capita income hovers around US$1,100, by providing stable, affordable power to approximately 10 million residents and fostering industrial growth through reliable energy access that mitigates barriers to manufacturing and agro-processing.[19] [7] The facility's role as the primary regulator in the Vakhsh River cascade supports national goals for enhanced energy security and regional integration, including cross-border transmission lines to Uzbekistan and Kazakhstan, which promote renewable energy trade and reduce fossil fuel dependence amid climate variability.[11] [20] Government priorities, as articulated by President Emomali Rahmon, emphasize Rogun's contribution to sustainable development by generating clean electricity sufficient to meet all domestic demand, while international assessments highlight its potential to bolster economic resilience through job creation during construction—estimated at thousands of direct positions—and long-term fiscal inflows from power sales.[21] [22] Funding from entities like the OPEC Fund underscores alignment with Tajikistan's energy transition plans, positioning the dam as a multi-purpose asset for flood control and drought mitigation alongside hydropower, though realization depends on completing the 335-meter arch dam and six turbines amid ongoing technical and financing hurdles.[23] [11]Historical Development
Soviet-Era Origins (1976–1991)
Preparatory works for the Rogun Hydroelectric Power Plant commenced in 1976 within the Tajik Soviet Socialist Republic, as part of the Soviet Union's broader initiative to harness the Vakhsh River's hydropower potential for regional energy needs in Central Asia.[24] [8] These initial efforts focused on essential infrastructure, including access roads, worker accommodations, and preliminary tunneling to facilitate river diversion, under the oversight of Soviet engineering bodies tasked with integrating Tajikistan's energy production into the union-wide grid.[24] Actual dam construction began in 1982, aiming to erect an embankment structure up to 335 meters high—the tallest in the world at the time of planning—with an installed capacity of approximately 3,600 megawatts across six turbines.[24] [8] Progress during the late 1970s and 1980s involved excavating diversion tunnels and laying foundational elements, though seismic risks in the Pamir region and logistical challenges in the remote mountainous terrain slowed advancement, with Soviet reports emphasizing the project's role in flood control and irrigation alongside power generation.[25] [24] By 1991, as the Soviet Union disintegrated, construction halted amid economic disruptions and the loss of centralized funding and expertise, leaving the site with completed preparatory facilities but no substantial dam body or installed turbines.[24] [8] The era's efforts, while ambitious, reflected the USSR's top-down approach to resource development, prioritizing scale over immediate regional equity, with Tajik SSR authorities promoting it as a symbol of modernization despite dependencies on Moscow for materials and labor.[26]Post-Independence Stagnation and Revival (1991–2016)
Following Tajikistan's independence from the Soviet Union in 1991, construction on the Rogun Dam effectively stalled due to the abrupt loss of centralized Soviet funding and technical support, compounded by severe economic instability.[27] The ensuing Tajikistani Civil War (1992–1997), which displaced over 600,000 people and destroyed much of the country's infrastructure, further paralyzed any potential progress on the project, diverting scarce resources to conflict resolution and basic governance.[28] A catastrophic flood on May 8, 1993, exacerbated these setbacks by overtopping and washing away the existing cofferdam, diversion tunnels, and significant portions of accumulated rock fill, erasing years of preliminary Soviet-era work and rendering the site largely unusable without major reinvestment.[29] The post-war period through the mid-2000s saw prolonged stagnation, as Tajikistan grappled with reconstruction, hyperinflation, and energy shortages that limited domestic investment capacity; early attempts to restart in the early 2000s faltered amid disputes with potential Russian partners over financing and technology transfer.[30] Regional tensions, particularly Uzbekistan's vehement opposition to the upstream dam due to fears of reduced water flows for its agriculture and hydropower, manifested in logistical blockades, such as restrictions on transporting heavy equipment through Uzbek territory, further hindering mobilization.[31] Under President Emomali Rahmon, who assumed power in 1994, the project remained symbolically dormant but increasingly framed as a nationalist imperative for energy self-sufficiency, though actual site activity was minimal until energy crises peaked. Revival efforts gained momentum in the late 2000s, driven by acute winter blackouts in 2008 and 2009 that left millions without heat or power, prompting the government to prioritize hydropower expansion.[27] In May 2008, Tajikistan officially announced the resumption of construction, focusing initially on site rehabilitation and infrastructure upgrades.[31] By December 2010, one of the Vakhsh River diversion tunnels had been renovated and operationalized, with work underway on a second to enable safer river rerouting, marking tangible progress after nearly two decades of inertia.[31] Public support was galvanized through a September 2011 referendum, where over 97% of voters endorsed the project and a financing model involving citizen share purchases, reflecting Rahmon's portrayal of Rogun as essential for national development despite estimated costs exceeding $3 billion at the time.[8] However, this revival phase encountered renewed obstacles by 2011, including Uzbekistan's escalation of opposition—such as railway embargoes on construction materials—and international scrutiny over feasibility, environmental risks, and transboundary impacts.[8] In agreement with institutions like the World Bank, which initiated an independent technical, economic, and environmental review in 2011, major construction halted pending assessment results, limiting activities to essential maintenance and preparatory studies through 2016. This pause underscored the project's vulnerability to geopolitical frictions in Central Asia, where downstream Uzbekistan prioritized water security for irrigation serving 4.3 million hectares, viewing Rogun's reservoir—projected to hold 13.3 cubic kilometers—as a potential threat to seasonal flows.[16] Despite these constraints, the period solidified Rogun's role in Tajik national discourse as a pathway to exporting surplus power and alleviating chronic deficits, setting the stage for intensified efforts post-review.Construction Resumption and Milestones (2016–Present)
In October 2016, Tajikistan resumed construction of the Rogun Hydropower Plant (HPP) following a tender process, awarding the main engineering, procurement, and construction contract to Italy's Salini Impregilo (now Webuild) for approximately $3.9 billion.[32][33] The restart occurred amid national energy shortages, including a widespread blackout on October 30, 2016, prompting official groundbreaking ceremonies and mobilization of equipment for dam body excavation and diversion tunnel enhancements.[25][34] Early progress included the commissioning of the first generating unit in November 2018, providing initial power output from temporary installations at a reduced dam height of about 135 meters during the first construction stage.[35] The second unit followed in September 2019, enabling limited operations while main dam works advanced, including rockfill placement and cavern excavation for the powerhouse.[35] ![Tunnel Sadd Ariana Cavern construction of Rogun Dam hydro power plant][float-right]Subsequent milestones focused on scaling the dam structure toward its designed 335-meter height, with ongoing activities by 2023 involving reinforced concrete works, additional tunnel boring for water diversion, and installation of electromechanical components under oversight from international consultants.[32][36] By August 2025, the dam body had reached significant elevation, with contractor reports indicating steady progress on core rockfill and spillway infrastructure, though the project faced delays from funding reviews by institutions like the World Bank, which paused support in September 2025 pending further assessments.[4][30] Full operational capacity across six units remains targeted for completion in phases through the late 2020s, contingent on resolving transboundary consultations and securing alternative financing from entities such as the Asian Infrastructure Investment Bank.[11][8]
