Production of natural gas reached a two-year low, however.
A floating storage regasification unit will supply gas to the plant in Brazil's Sergipe state.
With investment slowing to a trickle in Peru due to the ongoing Odebrecht corruption investigation that involves the past three governments, the government is struggling to boost growth.
In recent days, the South American nation announced it already had concluded talks to export urea to Argentina and Brazil.
Projects to obtain environmental green light in January include a US$535mn PV solar park and a US$243mn thermal power plant overhaul.