The Itaipu Dam on the Paraná

The Itaipu Dam is a hydroelectric dam on the Paraná River. It sits on the border.

Around forty thousand people worked in the construction. The course of the seventh biggest river was shifted. Seventh biggest river, now slightly to the left.

That much iron and steel was used.

The reservoir began its formation on October 13, 1982. Water rose 100 meters in two weeks.

Fourteen GW capacity, twenty units at 700 MW each. Ten run 50 Hz, ten run 60 Hz. Paraguay gets the slower beats.

On November 10, 2009, transmission was disrupted by a storm. 50 million people were affected.

The concrete used could build 210 football stadiums. In 1994, civil engineers named it a Wonder of the World. Stadium seating not included.