Acaray Dam | |
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Location | Hernandarias, Paraguay |
Coordinates | 25°27′34″S 54°37′45″W / 25.45944°S 54.62917°WCoordinates: 25°27′34″S 54°37′45″W / 25.45944°S 54.62917°W |
Owner(s) | Administracion Nacional de Electricidad |
Dam and spillways | |
Type of dam | Gravity dam |
Impounds | Acaray River |
Height | 185 m (607 ft) |
Length | 1,500 m (4,900 ft) |
Spillway type | 56 m3/s (2,000 cu ft/s) |
Power station | |
Installed capacity | 210 MW (280,000 hp) |
The Acaray Dam is a hydroelectric dam situated in Hernandarias, Paraguay. It has an electrical output of 210 megawatts (280,000 hp), supplying 3% of Paraguay's electricity demand.
The power plant's switchyard has a HVDC back-to-back station built by Siemens in 1981. It has a power rating of 55 megawatts (74,000 hp) and an operating voltage of 25 kV. It converts the electrical frequency from 50 hertz to 60 hertz to supply electricity to Brazil's power grid, which operates at 60 Hz (Paraguay's power grid operates at a frequency of 50 hertz).