The utility, which owns 60% of Colombia's gas pipeline network, said it has five gas pipeline projects requiring US$224mn in total capex scheduled to enter operation between 2Q16 and 4Q18.
The Pajaritos plant is operated by Petroquímica Mexicana de Vinilo (PMV), a joint venture between Pemex and Mexichem formed in 2013.
Last month, Colombia's residential public services regulator Superservicios met with authorities, residents and power and natural gas providers in neighboring Cauca department to advance measures to improve services to residents in the region.
Ecopetrol saw a 127% y-o-y increase in net revenues in the first quarter, despite a 12-year oil price low, as depreciation of the Colombian peso boosted its US dollar revenues.
South America and Africa contribute the largest pre-funding revenues over the first quarter, Norwegian seismic firm says.
The pipeline tender was the 13th CFE has held since 2014 in its bid to expand the country's natural gas pipeline network.