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 . 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 3 September 2007.
Culture It is depicted in the 50 guaranies coin in Paraguay.
See also
List of power stations in Paraguay
Notes