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English: Hydroelectric dam. Water from the reservoir rushes through the penstock into the powerhouse. The water spins the turbine, which drives the generator. Inside the generator is a large electromagnet that spins within a coil of wire, producing electricity.
Hoover Dam's initial 1,345 MW power station was the world's largest hydroelectric power station in 1936; it was eclipsed by the 6,809 MW Grand Coulee Dam in 1942. [20] The Itaipu Dam opened in 1984 in South America as the largest, producing 14 GW , but was surpassed in 2008 by the Three Gorges Dam in China at 22.5 GW .
A conventional dammed-hydro facility (hydroelectric dam) is the most common type of hydroelectric power generation. Chief Joseph Dam near Bridgeport, Washington , is a major run-of-the-river station without a sizeable reservoir.
In 1895 a second powerhouse was built on the same dam, Station B, and Station A was removed. Station B. In 1953 Station B was renamed after the engineer, Thomas Sullivan, who designed it and the nearby paper mills. The Willamette Falls Paper Company was on the northwest bank, whereas the Blue Heron paper mill was across the river in Oregon City ...
The spillway of the Robert-Bourassa Dam (formerly La Grande-2) The James Bay Project (French: projet de la Baie-James) refers to the construction of a series of hydroelectric power stations on the La Grande River in northwestern Quebec, Canada by state-owned utility Hydro-Québec, and the diversion of neighbouring rivers into the La Grande watershed.
At the time it was the fourth largest dam and the largest power dam in the world. The dam is constructed of concrete and granite quarried nearby– a rubble core with trimmed blocks on the surface. Up to 280,000 cubic yards (210,000 m 3 ) of rock and dirt were moved during construction.
The government aims to increase India’s hydro power by half by 2030, to 70,000 megawatts, and has approved hundreds of new dams across the country's mountainous north.
In 2009, the dam, designed for a maximum flood of 19 lakh cusecs, endured a flood of 25.5 lakh cusecs. According to a survey conducted in the summer of 2018, the scouring resulted in the formation of a huge pit in the apron downstream the dam. And a structure protecting the ‘toe’ and foundation of the main dam has weakened.