Itaipu hydroelectric dam aerial view with massive water release

Aerial view of the Itaipu hydroelectric dam with its spillway releasing a massive volume of water during routine or emergency operation.

About this subject

The Itaipu hydroelectric dam, located on the Paraná River at the border between Brazil and Paraguay, is one of the largest in the world in power generation. Inaugurated in 1984, it has an installed capacity of 14,000 MW, supplying about 10% of Brazil's electricity and 90% of Paraguay's. The dam is 7,919 meters long and 196 meters high, forming a reservoir of 1,350 km².

The spillway, visible in the image, is a critical safety structure to control the reservoir level and prevent flooding. It can release up to 62,200 m³/s of water, equivalent to 40 times the average flow of Iguazu Falls. The spillway is opened during heavy rainfall or when power generation cannot handle the excess water.

Itaipu's construction involved an unprecedented binational agreement, with an estimated cost of US$ 20 billion. The project sparked environmental and social controversies, including the displacement of thousands of families and the creation of Lake Itaipu. Today, the dam is also a tourist attraction, receiving visitors to tour its facilities and the surrounding complex.

The image captures a moment of operation when water is released with force, creating an impressive visual and auditory spectacle. The symmetry of the dam and the contrast with the bright sky highlight the grandeur of the engineering. Itaipu is considered one of the Seven Wonders of the Modern World by the American Society of Civil Engineers.

Frequently Asked Questions

What is the generation capacity of the Itaipu dam?

Itaipu has an installed capacity of 14,000 MW, supplying about 90% of Paraguay's electricity and 10% of Brazil's.

Why does the Itaipu spillway release water?

The spillway is used to control the reservoir level during heavy rainfall or when power generation cannot handle the excess water, preventing floods.

Is Itaipu considered an engineering wonder?

Yes, the dam was named one of the Seven Wonders of the Modern World by the American Society of Civil Engineers.