Cuba’s national power grid has collapsed again, leaving millions of people across the island without electricity in the latest such failure in recent months. Authorities said the country’s top electricity producer shut down about 2:00 AM on Wednesday, prompting the grid collapse.

Cuba’s power grid collapsed multiple times in October as fuel supplies dwindled and Hurricane Oscar struck the far-eastern end of the island, prompting authorities to close schools and nonessential workplaces. In November, Hurricane Raphael knocked out the grid again as it made landfall on the island as a Category 3 storm.