Small Three Gorges Hydropower Station

SDIC Gansu Small Three Gorges Power Generation Co., Ltd. was founded in June 1994. Currently, its total installed capacity is 700,000 kilowatts, with a registered capital of 860 million yuan. It is the first company in Gansu Province officially established in Gansu Province, in accordance with the modern enterprise system, and strives for the development and construction of river basin energy projects. The company is mainly responsible for the development, construction, production, operation, and management of three hydropower stations, namely Dasia, Xiaosia, and Ucinsia, located in the main stream of the Yellow River in Gansu Province. Among them: Dasia hydropower station with an installed capacity of 330,000 kilowatts was fully put into operation in June 1998; Xiaosia hydropower station with an installed capacity of 230,000 kilowatts was fully put into operation in May 2005; Ucinsia hydropower station with an installed capacity of 140,000 kilowatts was put into full operation in June 2009. Fully put into operation for power generation this month.

Dachaoshan Hydropower Station

SDIC Yunnan Dachaoshan Hydropower Co., Ltd. was founded in November 1994 with a registered capital of 1.77 billion yuan. Dachaoshan Hydropower Station is located on the Lancang River, at the junction of Yun County, Linzhang City, and Jindun Yi Autonomous County, Pu'er City, Yunnan Province. The power station consists of 6 generating units, each with a capacity of 225,000 kilowatts, and the total installed capacity is 1.35 million kilowatts. In 2003, all units were put into operation for power generation.

The Dachaoshan Hydropower Project is a key project of the country's Ninth Five-Year Plan and a major project of the Western Development and the West-East Electricity Transmission. It is the first large-scale hydropower project with a million kilowatts in China that was completed and put into operation in the 21st century. The project has played a leading role in the sustainable development of hydropower in western China. The completion and operation of the Dachaoshan Hydropower Station have accelerated the process of 'transmitting electricity from west to east' and 'transmitting electricity from clouds', and have provided decisive support for the implementation of the national strategy of 'western development' and local economic development.

Tunzilin Hydropower Station

The Tunzilin Hydropower Station is located in Yanbian County, Panzhihua City, Sichuan Province, 18 km upstream of the Ertan Hydropower Station and 15 km downstream from the confluence of the Yalung River and the Jingsha River. It is the last cascade hydropower station on the lower reaches of the Yalung River. The total installed capacity of the power station is 600,000 kilowatts (4x150,000 kilowatts), with a maximum dam height of 66.63 meters and a dam crest length of 468.7 meters. The engineering complex consists of the left bank and right bank sections of the gravity dam, the river power station, the locks, and other structures. Construction of the Tunzilin Hydropower Station officially began on October 20, 2010, and all units were put into operation on March 27, 2016.

Guandi Hydropower Station

The Guandi Hydropower Station is located on the Yalong River at the junction of Sichuan City and Yan Yuan County, Lian Shan Yi Autonomous Prefecture, Sichuan Province. The normal water level of the reservoir is 1330 meters, the maximum dam height is 168 meters, and the total reservoir capacity is 760 million cubic meters. The total installed capacity of the power station is 2.4 million kilowatts (4×600,000 kilowatts), and the average annual electricity generation is approximately 11.776 billion kilowatt-hours. The station building consists of a gravity dam made of compacted concrete, an underground power station on the right bank, and a building for flood discharge and energy dissipation. The Guandi Hydropower Station is another compensation power station of the Jinping I Hydropower Station after the Jinping II Hydropower Station. It not only provides powerful electric energy but also has obvious advantages of cascade compensation. The construction of the Guandi Hydropower Station officially started on October 20, 2010, and all units were put into operation in March 2013. Thanks to its excellent economic benefits and significant ecological advantages, the Guandi Hydropower Station has received awards such as the 'National Quality Investment Project Award 2016-2017' and the 'National Soil and Water Conservation Ecological Civilization Project'.

Ertan Hydropower Station

The Ertan Hydropower Station is located at the junction of Yanbian and Miyi counties in Panzhihua City, southwest Sichuan Province. Being the largest hydropower station built and put into operation in China in the 20th century, the Ertan Hydropower Station started construction in September 1991 and was completed in 2000. After 10 years of construction, it was completed. The 240-meter-high arch dam was the tallest in Asia at the time, and its installed capacity for power generation was 3.3 million kilowatts. World Bank credits were used in the Ertan Hydropower Station project, an 'international tender' was conducted fully in line with international standards, project construction management was conducted in accordance with the conditions of an internationally recognized FIDIC contract, and a 'corporate legal liability system' and 'project construction supervision system' were implemented for the first time in China. The 'tender system' and 'contract management system' and other modern management systems. The 'Dispute Resolution Board (DRB) System' was successfully implemented for the first time in the field of construction dispute resolution. The innovative and innovative management system of the Ertan Hydropower Station led Chinese construction management methods for hydropower projects to comply with international standards and became one of the first examples of projects built in accordance with modern Chinese corporate system standards. The electromechanical trade 'slanting cutting' method used in the project allowed the production level of water turbines in my country to rise from 320,000 kilowatts to 550,000 kilowatts, playing an important role in the development of the national industry. In November 2006, the Ertan Hydropower Station won the 6th 'Zhang Tianyu Civil Engineering Award'.

Jinping II Hydropower Station

The Jinping II Hydropower Station is located at the junction of Muli, Yan Yuan, and Myan Nan in the Lian Shan Prefecture and is the largest hydropower station on the Yalong River and the hydropower station with the largest installed capacity in Sichuan Province, except for the border river. The Jinping II Hydropower Station was approved by the state in December 2006, and construction officially began on January 30, 2007. All units were put into operation on November 29, 2014, with a total installed capacity of 4.8 million kilowatts (8x600,000 kilowatts). . Ahead of the Jinping II Hydropower Station dam gates.

The Jinping II Hydropower Station is a key strategic project of my country`s 'West-to-East Electricity Transmission' and plays an important role in promoting the development of the country`s western region and optimizing the energy supply structure. Among them, four main drainage tunnels pass through the Jinping River loop of the Yalong River with extremely complex geological conditions, with an average length of about 16.67 km and a development diameter of 12.4-13 m. This is the deepest and largest hydraulic tunnel. Serious disasters, such as strong mountain impacts, concentrated water flows of large volumes, and damage from seepage under high pressure, often occur due to the extremely high ground stress level at 100 MPa and high external water pressure at 10 MPa. It is also necessary to address the safety and stability issues of complex hydraulic transient processes inherent in extremely large derivative power stations. Technical difficulties in the world are rare.

Jinping I Hydropower Station, Level 1

Hydropower Station Jinping I is located in Yan Yuan and Muli Lianshan Yi Autonomous County of Sichuan Province and represents a controlled reservoir project in the lower reaches of the mainstream of the Yalong River (from Kala to Jiangkou). The total installed capacity of Jinping I Hydropower Station is 3.6 million kilowatts (6x600,000 kilowatts), the normal water level of the reservoir is 1880 meters, the stationary water level is 1800 meters, the total capacity of the reservoir is 7.76 billion cubic meters, and the regulated reservoir capacity is 4.91 billion cubic meters. This is an annual regulating reservoir. The main building consists of permanent buildings such as water retention, water discharge, energy dissipation, water diversion, and power generation. Among them, the double-curvature concrete arch dam has a height of 305 meters, making it the tallest dam in the world. Jinping I Hydropower Station was approved by the state in September 2005, and officially construction started on November 12th. All units were put into operation on July 12, 2014, with a total construction period of 9 years and 3 months. The engineering geological conditions of Jinping I Hydropower Station are extremely complex, with characteristics of 'five peaks and one depth', such as high mountain canyons, high arch dams, high slopes, high soil stress, high water pressures, and deep unloading. The engineering construction is extremely complicated and is mentioned within the country. Foreign experts recognize it as a gigantic hydroelectric project with 'the most complex geological conditions, the most severe construction conditions, the largest technical complexity, and the most complicated construction management'. After decades of unremitting efforts, Jinping I Hydropower Station has overcome many serious technical problems and achieved rich innovative results. So far, the Jinping Level 1 project has repeatedly won the National Technology Invention Award, the second prize of the National Science and Technology Progress Award, and other awards. In 2015, the Jinping Hydroelectric Power Project Group won the World Federation of Engineering Organizations (WFE0) Award for Outstanding Engineering Construction. In 2017, the Jinping Hydropower Station Project Group also won the China Civil Engineering Zhang Tianyu Award; in 2018, Jinping I Hydropower Station again won the FIDIC Engineering Project Award for Outstanding Achievements, known as the 'Nobel Prize' in engineering consulting, ranking first.