The basin of the Rio Grande belongs to the Paraná River basin. It has a total area of 143,000 km2 (55,213 sq mi), of which 86,500 km2 (33,398 sq mi) are located within Minas Gerais, which is equivalent to 17.8% of the state territory. The basin of the Rio Grande is responsible for about 67% of all energy generated in the state.