Três Irmãos Dam

The Três Irmãos Dam is an embankment dam with gravity sections on the Tietê River in Pereira Barreto of São Paulo state in Brazil. The dam is about 28 kilometres (17 mi) upstream of the river's confluence with the Paraná River. It supports the largest hydroelectric power station on the river with an installed capacity of 807.5 megawatts (1,082,900 hp). The dam was completed in 1991 and the five 161.5 megawatts (216,600 hp) Francis turbine-generators were commissioned between November 1993 and January 1999. It is owned and operated by Companhia Energética de São Paulo (CESP). The dam also provides for navigation with two ship locks.[1][2]

Três Irmãos Dam
Location of Três Irmãos Dam in Brazil
Official name	Barragem Três Irmãos
Country	Brazil
Location	Pereira Barreto, São Paulo
Coordinates	20°39′56.29″S 51°18′5.19″W
Purpose	Power, navigation
Status	Operational
Opening date	1991 (1991)
Dam and spillways
Type of dam	Embankment with gravity sections
Impounds	Tietê River
Height	82 m (269 ft)
Length	3,640 m (11,940 ft)
Reservoir
Creates	Três Irmãos Reservoir
Total capacity	13,373,000,000 m3 (10,842,000 acre⋅ft)
Active capacity	3,450,000,000 m3 (2,800,000 acre⋅ft)
Inactive capacity	9,923,000,000 m3 (8,045,000 acre⋅ft)
Catchment area	699,000 km2 (270,000 sq mi)
Surface area	785 km2 (303 sq mi)
Normal elevation	328 m (1,076 ft)
Operator(s)	Companhia Energética de São Paulo (CESP)
Commission date	1993-1999
Type	Conventional
Turbines	5 x 161.5 MW (216,600 hp) Francis-type
Installed capacity	807.5 MW (1,082,900 hp)