Cuba’s power grid failed on Sunday, causing another nationwide blackout, a state utility said in a social media post. Cuba's electricity grid collapsed late on Sunday, the state-owned grid ​operator said, plunging the island of ‌about 10 million people into darkness as blackouts become more frequent. Key points and original sources are listed below.

• Cuba’s power grid failed on Sunday, causing another nationwide blackout, a state utility said in a social media post. As the lights suddenly turned off across Havana, residents who were sat outside to get some respite from the summer heat audibly groaned en ma...S1

• Cuba's electricity grid collapsed late on Sunday, the state-owned grid ​operator said, plunging the island of ‌about 10 million people into darkness as blackouts become more frequent.S2

• Cuba’s ageing power grid collapsed on Sunday after a weekend of outages and amid US-imposed fuel shortages.S3

• Cuba has been plunged into darkness after ‌the national electricity grid collapsed, leaving the island nation's 10 million ‌people without power again.S4

• Outage follows three nationwide blackouts in July ‌and comes as a ​US-imposed oil ‌blockade ⁠cripples ⁠island's already aging energy ‌infrastructureS5