Guizhou Qianyuan Power's 558-Megawatt Mamaya I Hydropower Station Receives Approval

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Researched by Industrial Info Resources China (Beijing, China)--China's National Development and Reform Commission approved Guizhou Beipanjiang Power Company Limited's (Guiyang, Guizhou) 558-megawatt (MW) Mamaya I Hydropower Station in July 2012, according to an announcement from the National Energy Administration on August 6.

The Mamaya I Hydropower Power Station is the second scheme in the cascade development of the river section downstream of Maokou, on the mainstream of the Beipanjiang River. The dam site is located in the Jiansha Gorge, at the boundary between Jianshan Village of Guanling County and Bulang Village of Xingren County, in Anshun City, in the Guizhou province. It has an annual average flow of 309 cubic meters per second and a catchment area of 16,068 square kilometers. The main purpose of the project is power generation, with other diversified benefits in navigation and downstream ecological protection, as well as sightseeing.

According to the approval, the project is mainly comprised of a 109-meter-high rolling compact concrete dam, with a reservoir capacity of 136.5 million cubic meters, under a normal pool level of 585 meters above sea level. It includes a spillway and power diversion system, navigation facilities, and a powerhouse to be furnished with three 180-MW and one 18-MW base-flow, Francis type hydraulic turbine generator units, with a total investment of about $624 million.

HydroChina Guiyang Engineering Corporation (Guiyang, Guizhou) is currently responsible for the survey and engineering of the project. According to the schedule, the project is expected to achieve river diversion at the end of 2012. Construction of the main works is expected to kick off shortly after the river diversion. The total construction period of the project will be 47 months, including 15 months for construction preparation and 26 months for the construction of the main works. Upon completion, the project will be able to generate about 1.56 billion kilowatt-hours of clean electricity to the local grid.

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