Interested companies and consortia must hand in proposals by June 19.
Local environmental groups had voiced their concern about the potential health effects that construction of the plant could bring to area residents.
Officials from the Inter-American Development Bank spoke with BNamericas about how a recently launched financing instrument is intended to help the region cover its sustainable infrastructure deficit.
The projects outlines by the Neuquén government include development of a cargo terminal at the Neuquén city airport, irrigation works, a trans-Andean railway and a duty-free trade zone.
President Michel Temer was supposedly recorded discussing bribes for a politician arrested in the Lava Jato anti-corruption investigation.
The Brazilian state is planning to create a holding company - with private sector participation - for the water and sanitation industry.
The funds are required to improve and expand the company's supply service, according to agency officials.
The project involves developing plans to implement a 115km water channel, in addition to building tunnels, aqueducts, dams and other works.
Over half of the resources would be for the Atacama region (III). Current works are focused on cleaning up the affected areas.