The line to link the planned 280MW Molloco hydroelectric complex with the national grid hits environmental permitting wall.
The plant, which will be fueled by natural gas, propane, and diesel, is forecast to begin operating in 2021, after investment of US$100mn, according to GEP chief executive Óscar Isaza.
Vice president Jorge Glas became the latest senior Latin American government official to be swept up in the Odebrecht bribery scandal, after the country's president stripped him of his functions.
Bidding terms establish a price of 16.8 reais (around US$5) per share for the government's controlling stake in the company.
The station is the first of a planned 20 to be installed this year.