The works will provide piped gas to 140,500 new users in the residential, industrial and power generation segments.
Some 9.2bn reais will be pumped into distribution, 1bn reais into generation, 157mn reais into commercialization/services and 48mn reais into transmission projects over the next five years, the São Paulo-based company said.
The original process was declared void after bids were deemed ineligible.
The Bucaramanga municipality claims that the initiative will bring a US$250mn investment and will end a 14 year long sanitary emergency that has affected the city.
Pampa Verdes would boast 2,524MW and irrigate 218,015ha.