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Acaray Dam
The Acaray Dam is a hydroelectric dam situated in Hernandarias, Paraguay. It has an electrical output of 210 MW, supplying 3% of Paraguay's electricity demand.
HVDC-back-to-back station
The power plant's switchyard has a HVDC back-to-back station built by Siemens in 1981. It has a power rating of 55 MW 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). This back-to-back station is inoperative since 03 September 2007.
Culture
It is depicted in the 50 guaranies coin in Paraguay.
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