Cuba's national electricity grid collapsed late on ⁠Sunday, the state-owned national electric utility said, plunging the ⁠island of ​about ⁠10 million people into ⁠darkness as blackouts are ​becoming ⁠ever more ‌frequent.The Union Electrica de Cuba did not provide any further details in its posts on social media websites X and Facebook. The outage follows three nationwide blackouts in July ‌and comes as a ​US-imposed oil ‌blockade has ⁠crippled the ⁠island's already aging energy ‌infrastructure.(AFP/Getty)Cuba's national power grid last collapsed on 14 July, ​marking the third major blackout in nine days on the ‌island."There has been a total disconnection of the electrical system," the energy ministry had said on social media.The ​frequent outages come as a US-imposed oil blockade ​has crippled the island's already aging energy infrastructure. US president ⁠Donald Trump imposed an oil blockade on the Caribbean ​island after Washington deposed Venezuelan president Nicolas Maduro on 3 January.Venezuela was Cuba's primary fuel supplier, and subsequent US pressure also led Mexico to halt oil shipments to the island.