The Itaipu Dam is a hydroelectric dam on the Paraná River located on the border between Brazil and Paraguay. It is the third largest hydroelectric dam in the world, and holds the 45th largest reservoir in the world.
The name "Itaipu" was taken from an isle that existed near the construction site. In the Guarani language, Itaipu means "the sounding stone". The Itaipu Dam's hydroelectric power plant produced the second-most electricity of any in the world as of 2020, only surpassed by the Three Gorges Dam plant in China in electricity production.
Completed in 1984, it is a binational undertaking run by Brazil and Paraguay at the border between the two countries, 15 km north of the Friendship Bridge.
Wikipedia https://en.wikipedia.org/wiki/Itaipu_Dam
Address Brazil
Coordinates -25°24'29.237" N -54°35'19.362" E