Cuba's power system stopped working. The whole country had no electricity. This happened three times in March. Many people are worried about the old power system.
The latest blackout began on Sunday. All power went out. Some power came back to the capital city. But many people had no lights. Hospitals got power first. This problem makes life hard for millions.
Cuba needs more fuel. It does not have enough oil. The US has stopped some oil shipments. This makes the fuel shortage worse.
People are not happy. They made noise with pots and pans. Some people went to a government building. The power problems hurt Cuba's economy.
Help is coming. Some aid is on its way. But bad weather is stopping some help. Cuba has many problems now.