Itaipu dam is located on river Parana river on the border of Brazil and Paraguay. It is the second largest dam in the world. The name Itaipu (which means stone sounds in Portuguese) was taken from an isle that existed near the construction site. Below are a few vital stats of the site:
Construction cost :USD 19.6 billion
Power generation capacity : 14,000 MW
Height : 196m
Number of turbines : 20
This dam was a joint undertaking by the Paraguay and Brazil. It produces nearly 20% of the power consumed by Brazil and 80% of the power consumed by Paraguay. As per the power sharing arrangement both countries are supposed to share the power equally between themselves, but due to low demand in Paraguay, it ends up exporting most of its power back to Brazil. Itaipu dam is a combination of gravity dam and earth and rock fill dam.It consists of 4 smaller dams : the main gravity dam at center along with a wing dam and an earthfill and a rockfill dam on the sides. This was done to create a reservoir deep enough to produce the required power.