A roundup of Latin America's top power sector news.
The natural gas-fired plant would add 450MW to the country's power generation park.
The efficiency gain came as the group invested 4.2mn reais (US$1.34mn) in a new operations center.
The Spanish company will build two storage terminals in Guerrero state to supply the Petacalco power plant.
Rio Grande do Norte state was the most prolific wind power generator from January to May, contributing 1.076aGW. Bahia was next with 704aMW followed by Rio Grande do Sul (547aMW), Ceará (460aMW) and Piauí (305aMW), according to official figures published on Thursday
The Spanish renewables firm was among the winners in Chile's latest public energy auction.