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Arunachal Pradesh is a state in northeast India. It was formed from the North-East Frontier Agency (NEFA) region, and India declared it as a state on 20 February 1987. Itanagar is its capital and largest town. It borders the Indian states of Assam and Nagaland to the south. It shares international borders with Bhutan in the west, Myanmar in the east, and a disputed 1,129 km border with China's Tibet Autonomous Region in the north at the McMahon Line.
With a height of 260.5 m (855 ft) Tehri Dam is the tallest dam in India and 13th tallest dam in the world. It is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River in New Tehri, Tehri Garhwal district in Uttarakhand, India. It is the primary dam of the THDC India Ltd. and the Tehri hydroelectric complex. Phase 1 was completed in 2006. The Tehri Dam withholds a reservoir for irrigation, municipal water supply and the generation of 1,000 megawatts (1,300,000 hp) of hydroelectricity. The dam's 1,000 MW variable-speed pumped-storage scheme is currently under construction with expected commissioning of first two units in 2023.
Salal Dam, also known as Salal Hydroelectric Power Station, is a run-of-the-river hydropower project on the Chenab River in the Reasi district of the Jammu and Kashmir. It was the first hydropower project built by India in Jammu and Kashmir under the Indus Water Treaty regime. After having reached a bilateral agreement with Pakistan in 1978, with significant concessions made to Pakistan in the design of the dam, reducing its height, eliminating operating pool, and plugging the under-sluices meant for sediment management, India completed the project in 1987. The concessions made in the interest of bilateralism damaged the long-term sustainability of the dam, which silted up in five years. It currently runs at 57% capacity factor. Its long-term future is uncertain.
Run-of-river hydroelectricity (ROR) or run-of-the-river hydroelectricity is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage is subject to seasonal river flows, so the plant will operate as an intermittent energy source. Conventional hydro uses reservoirs, which regulate water for flood control, dispatchable electrical power, and the provision of fresh water for agriculture.
NHPC Limited is an Indian public sector hydropower company that was incorporated in 1975 to plan, promote and organise an integrated and efficient development of hydroelectric power. Recently it has expanded to include other sources of energy like solar, geothermal, tidal, and wind.
The Chamera Dam impounds the River Ravi and supports the hydroelectricity project in the region. It is located near the town of Dalhousie, in the Chamba district in the state of Himachal Pradesh in India. The reservoir of the dam is the Chamera Lake. Large part of its reservoir lies in Salooni sub-division of Chamba.
Tipaimukh Dam, officially "Tipaimukh Multipurpose Hydroelectric Dam Project", is a proposed dam on the Barak River at Sipuikawn(Tipaimukh) in Manipur, India. The purpose of the dam is flood control and hydroelectric power generation. The project was approved by the Government of India in 1999 and entrusted to the North Eastern Electric Power Corporation Limited, later switched to NHPC Limited. Due to environmental concerns as well as concerns in Bangladesh over downstream effects, the project remains under discussion and no construction has yet taken place.
Dul Hasti is a 390 MW hydroelectric power plant in Kishtwar district of Jammu and Kashmir, India built by NHPC. The power plant is a run-of-the-river type on the Chenab River, in a rugged, mountainous section of the Himalayas, and several hundred kilometers from larger cities in the Jammu Division. It consists of a 70 m (230 ft) tall gravity dam which diverts water through a 9.5 km (5.9 mi) long headrace tunnel to the power station which discharges back into the Chenab. The project provides peaking power to the Northern Grid with beneficiary states being Jammu and Kashmir, Punjab, Haryana, Uttar Pradesh, Uttarakhand, Rajasthan, Delhi and Union Territory of Chandigarh. It was constructed between 1985 and 2007.
Uri Dam is a 480 MW hydroelectric power station on the Jhelum River near Uri in Baramula district of the Jammu and Kashmir, India. It is located very near to the Line of Control, the de facto border between India and Pakistan. The station is largely built under a hill with a 10 km tunnel. It is of the run-of-the-river type without a large dam, since the Indus Waters Treaty gives Pakistan the exclusive right to regulate the Jhelum River. On 4 July 2014 a 240 MW Uri-II power project which is a new project located just downstream of Uri I, was inaugurated.
The Dibang Dam is a planned concrete gravity dam, located in the Lower Dibang Valley District in Arunachal Pradesh, India. If constructed, it will be India's largest dam and the world's tallest concrete gravity dam, standing 288 metres (945 ft) tall. The Dibang Dam is expected to provide up to 3,000 megawatts of hydroelectric power and will also assist with flood control in the Dibang Valley.
The Subansiri Lower Dam, officially named Subansiri Lower Hydroelectric Project (SLHEP), is an under construction gravity dam on the Subansiri River in North Eastern India. It is located 2.3 km (1.4 mi) upstream of Subansiri River on Arunachal Pradesh. Described as a run-of-the-river project by NHPC Limited, the Project is expected to supply 2,000 MW of power when completed. The project has experienced several problems during construction to include landslides, re-design and opposition. It was expected to be complete in 2018. It is notable that, if completed as planned, it will be the largest hydroelectric project in India.
India is 5th globally for installed hydroelectric power capacity. As of 31 March 2020, India's installed utility-scale hydroelectric capacity was 46,000 MW, or 12.3% of its total utility power generation capacity. Additional smaller hydroelectric power units with a total capacity of 4,683 MW have been installed. India's hydroelectric power potential is estimated at 148,700 MW at 60% load factor. In the fiscal year 2019–20, the total hydroelectric power generated in India was 156 TWh with an average capacity factor of 38.71%.
The Zangmu Dam (藏木) is a gravity dam on the Yarlung Zangbo/Brahmaputra River 9 km (5.6 mi) northwest of Gyaca in the Tibet Autonomous Region of China. This dam is built a few kilometers from the Bhutan-India border. The purpose of the dam is hydroelectric power production using run-of-the-river technology. It is part of the Zangmu Hydropower Project and supports a 510 MW power station. Construction began in 2009 and the first generator was commissioned in November 2014. The last became operational on 13 October 2015. It is the first dam on the Brahmaputra/Yarlung Zangbo River and has caused controversy in India.
Dibang River, also known as Sikang by the Adi and Talo in Idu, is an upstream tributary river of the Brahmaputra in the Indian state of Arunachal Pradesh. It originates and flows through the Mishmi Hills in the (Upper) Dibang Valley and Lower Dibang Valley districts.
The Ratle Hydroelectric Plant is a run-of-the-river hydroelectric power station, with permitted pondage under the Indus Water Treaty, currently under construction on the Chenab River, downstream of the village near Drabshalla in Kishtwar district of the Indian Union Territory of Jammu and Kashmir. The project includes a 133 m (436 ft) tall gravity dam and two power stations adjacent to one another. Water from the dam will be diverted through four intake tunnels about 400 m (0.25 mi) southwest to the power stations. The main power station will contain four 205 MW Francis turbines and the auxiliary power station will contain one 30 MW Francis turbine. The installed capacity of both power stations will be 850 MW. On 25 June 2013, Prime Minister Manmohan Singh laid the foundation stone for the dam. Pakistan has frequently alleged that it violates the Indus Waters Treaty.
Lakhwar-Vyasi Dam project on Yamuna River, includes under-construction Lakhwar Dam and Power Station, Vyasi Dam, Hathiari Power Station and Katapathar Barrage, near the Lakhwar town in Kalsi block of Dehradun district of Uttarakhand in India, for the purpose of irrigation of 40,000 hectare land and total 927 MW hydroelectric power generation. "Lakhwar Dam" is a gravity dam near the Lohari village with 300MW power generation capacity. "Vyasi Dam" will be built 5 km downstream along with 120 MW "Hathiari Power Station" further 0.5 km downstream. "Katapathar Barrage", with the maximum ponding water level at 514.5m elevation, will be built further 2.75 km downstream of the Hathiari Power Station to supply the water to stakeholder states. Project will hold 580 million cubic metres water during monsoon and release into Yamuna during dry months.
Arunachal Frontier Highway (AFH), officially notified as the National Highway NH-913 and also called Bomdila-Vijaynagar Highway (BVH), connecting Bomdila Airstrip ALG & HQ in northwest to Vijaynagar Airstrip ALG & HQ in southeast via Nafra HQ-Sarli HQ-Huri Helipad ALG & HQ-Nacho HQ-Mechuka Airstrip ALG & HQ-Monigong HQ-Jido -Hunli HQ-Hayuliang Airstrip ALG HQ-Chenquenty-Hawai HQ-Miao HQ including 800 km greenfield section and network of new tunnels & bridges, is a 2-lane paved-shoulder under-construction national highway along the India-China LAC-McMahon Line border in the Indian state of Arunachal Pradesh. The 1,748 km-long (1,086 mi) highway itself will cost ₹27,000 crore and total cost including 6 additional inter-corridors is ₹40,000 crore. In some places, this highway will run as close as 20 km from the LAC. To be constructed by MoRTH in 9 packages, all packages will be approved by the end of fy 2024-25 and construction will be completed in 2 years by 31 March 2027. Of the total route, 800km is greenfield, rest brownfield will be upgraded and tunnels will be built. This highway in the north & east Arunachal along the China border, would complement the Trans-Arunachal Highway and the Arunachal East-West Corridor as major highways spanning the whole state, pursuing the Look East connectivity policy.
Tuting is a town and headquarters of an eponymous circle in the Upper Siang district in Arunachal Pradesh, India. It is situated on the bank of Siang river (Brahmaputra) at a distance of 34 km (21 mi) south of Line of Actual Control and 170 km (110 mi) north of Yingkiong. Tuting is the center of an assembly constituency, and also home to an Indian Military headquarters. The border area reports frequent incursion attempts by the Chinese People's Liberation Army, including an attempt to construct a road in Indian territory.
Kopili Hydro Electric Project is a 275 megawatts (369,000 hp), hydroelectric power project on the Kopili river and its tributary, Umrong stream. It is located in Dima Hasao district of Assam state in India. The project is developed and operated by North Eastern Electric Power Corporation Limited. It is an important project since the indian State of Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland and Tripura benefit from this project.
SJVN, formerly known as Satluj Jal Vidyut Nigam, is an Indian public sector undertaking involved in hydroelectric power generation and transmission. It was incorporated in 1988 as Nathpa Jhakri Power Corporation, a joint venture between the Government of India and the Government of Himachal Pradesh. The company has a total operating hydropower capacity of 1912 MW through its two hydropower plants—Nathpa Jhakri and Rampur. In addition, it has an installed capacity of 97.6 MW of wind power and 81.9 MW of solar power.
References
- ↑ India pre-empts Chinese design in Arunachal
- ↑ Dam shield against river threat - Arunachal nod to project
- ↑ Upper Siang project likely to be relocated on Chinese concerns
- ↑ Massive dam plans for Arunachal
- ↑ Students body asks Jairam Ramesh to reconsider setting up of hydro projects
- ↑ Assam dam project may continue: Jairam Rames
