Bratsk hydroelectric plant
| Bratsk Dam | |
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 Location of Bratsk Dam in Russia
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| Official name | Bratsk Hydroelectric Power Station |
| Location | Bratsk, Russia |
| Coordinates | 56°17′10″N 101°47′10″E / 56.28611°N 101.78611°ECoordinates: 56°17′10″N 101°47′10″E / 56.28611°N 101.78611°E |
| Construction began | 1954 |
| Opening date | 1967 |
| Owner(s) | Irkutskenergo |
| Dam and spillways | |
| Impounds | Angara River |
| Height | 124.5 m (408 ft) |
| Length | 924 m (3,031 ft) |
| Reservoir | |
| Creates | Bratsk Reservoir |
| Total capacity | 169.27 km3 (41 cu mi) |
| Surface area | 5,470 km2 (2,112 sq mi) |
| Power station | |
| Hydraulic head | 108 m (354 ft) |
| Turbines | 15 × 250 MW 3 × 255 MW |
| Installed capacity | 4,515 MW |
| Annual generation | 22.6 TWh |
The Bratsk Hydroelectric Power Station (also referred to as 50 years of Great October) is a concrete gravity dam on the Angara River and adjacent hydroelectric power station. It is the second level of the Angara River hydroelectric station cascade in Irkutsk Oblast, Russia. From its full commissioning in 1967, the station was the world’s single biggest power producer until Canada's Churchill Falls was opened in 1971. Annually the station produces 22.6 TWh. Currently, the Bratsk Power Station operates 18 hydro-turbines, each with capacity of 250 MW, produced by the Leningrad Metal Works ("LMZ", Russian: ЛМЗ, Russian: ) in the 1960s.
Components:
On the top of the dam are the track of the Taishet-Lena railway line and a vehicle road.
There are no navigational channels, because the Angara has no through ship routes. Nevertheless, the construction project includes the possibility to build a ship elevator.
The Turbine Hall contains 18 Francis hydroturbine units, 250 MW each, with 106 m of operating head. A 5 140 m-long forms the Bratsk Reservoir. With the 4 500 MW of output and 22.6 TWh of annual output, it is Russia's second single producer of hydroelectricity. Output is distributed into five 500 kV power lines and twenty 220 kV lines.
The plant was designed by the Moscow-based Hydroproject (Russian: «Гидропроект») institute, and is operated by the joint-stock company Irkutskenergo (Russian: «Иркутскэнерго»), although all the buildings themselves belong to Russia's federal government. A reconstruction project includes increasing the output towards 5 000 MW. At present, Irkutskenergo together with JSC Silovii Mashini (Russian: «Силовые машины») is modernizing the aging turbines.
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Wikipedia