Will Cuba\u27s electricity sector hold the country back?

A massive power outage hit two-thirds of Cuba\u27s provinces earlier this month, a sign of the country\u27s aging infrastructure. According to analysts, modernizing the system could cost several billion dollars. Meanwhile, two recent attempts at exploratory drilling off the Cuban coast have been unsuccessful. Will the electricity sector hold the country back as the government takes steps to liberalize the economy and increase consumption? How serious are Cuba\u27s energy woes? Is the government partly at fault for mismanaging the sector, as some critics allege, or are sanctions entirely to blame