How is it possible the liberal marxist paradise of Cuba is running out of energy?

The government controls the utilities in Cuba.There is no incentive for a government controlled business to improve service.Here we can complain to the PSC about poor service.There is also competition from other companies and employees can earn bonuses for hard work and ideas to save the company money.With a government owned business,it's hard to get fired and there is not much incentive to improve customer service.That was a problem with the former Soviet Union.You worked for the government and got paid whether you worked hard or not.This attitude led to major shortages of almost all commodities all the time.Why work harder if there's no reward and poor performance isn't punished.