Electricity services have been restored to all of Argentina and Uruguay following a massive blackout that left around 48 million people without power on Sunday, authorities said. The cut, which began just after 7:00 am, also caused short, localized losses of power in Paraguay, but didn't impact Tierra del Fuego in Argentina's extreme south because the region is not part of the national system. The episode was the first time a power cut had affected the majority of Argentina, with a population of more than 44 million, and the entirety of Uruguay, which has 3.4 million inhabitants.