In Romania there is little water in the Danube. The water level is very low. This is a problem for the nuclear power plant. A nuclear power plant needs much water to cool. Without water the parts become too hot. Therefore Romania turns off a reactor.
The country has 2 reactors. These reactors make much power for the country. Now this power is missing. The people in Romania need much energy. In this week the need is very high.
Romania cannot make enough own power. The power plants make 4.300 megawatt. The people need 7.300 megawatt. This is a big gap. Therefore Romania must buy power from other countries. This is also called import.