Oil giant Petrobras is looking for alternatives to use the unfinished Comperj facilities in Itaboraí, Rio de Janeiro. Comperj originally would have been a petrochemical complex, but in the end, it became one of the biggest symbols of waste and corruption in the history of the state-owned company. One idea is to turn it into a natural gas hub. Petrobras is investing $4 billion in a processing unit and considering installing a thermoelectric plant to harness presalt gas. Another option is to use part of the equipment initially planned for the petrochemical complex to build a lubricant plant. The company has already spent more than $13 billion in the venture.