As electricity was being restored in parts of Cuba following an island-wide blackout, a total collapse of the electrical grid occurred once again.

Cuba`s electrical grid collapsed again early on Saturday morning, state-run media reported, plunging the entire country into blackout for a second time just hours after authorities announced they had begun reestablishing service.

Many of Cuba’s power plants are outdated and inefficient; some have been in operation for over 50 years without proper maintenance. After the country’s grid collapsed when hurricane Ian hit in 2022, experts warned the government needed to urgently invest in modernizing the system.

Cubans experienced their second black out wave Saturday after government officials said they were working to restore electrical service to hospitals and crucial service centers after a grid failure on Friday.

Cuba’s national electrical grid first crashed around midday on Friday after the island’s largest power plant shut down. The grid collapsed again on Saturday morning, state-run media reported

Authorities in Cuba have suffered a third major setback to restoring power, leaving millions in the dark. The country's national grid crashed around midday Friday after the Antonio Guiteras power plant,

Cuba's power grid has ground to a halt for a second time in as many days, leaving 10 million on the island without power and the Caribbean island in a growing sense of crisis.

HAVANA − Cuba's national electrical grid shut down on Friday after one of the island's major power plants failed, Cuba's energy ministry said, plunging the entire country into a blackout. The Communist-run government earlier in the day closed schools and non-essential industry and sent most state workers home in a last-ditch effort to keep the lights on for residents.

Cuba's main electrical grid has failed, frustrating Cubans across the island, with up to ten million still in the dark. NBC News' George Solis has the latest.