The temporary deprivation of power at the end of May is not what Russia is doing.
I guess it is how you define temporary. Actually, it took years for the Serbs to repair the damage done by the bombing.
Still, military officials confirmed that the objective of using conventional explosives against parts of the power grid was to cause longer-lasting disruptions of electrical service. “It’s fair to say we made the decision that we’re going to attack some elements of it in a way that’s going to take it down for longer than it would have been,” said a senior officer at the Pentagon.
By focusing the attacks more on distribution lines than on main production components, the officer said, the damage should take weeks, not years to repair. He said Yugoslav authorities have access to “auxiliary power supplies for many of these facilities,” but he added that the latest attacks should prove more challenging for the Yugoslav military than the brief outages caused by the filament drops.
https://www.washingtonpost.com/wp-srv/inatl/longterm/balkans/stories/serbia060599.htm
After 2 1/2 months of war, Yugoslavia is a shattered nation. It is isolated internationally and divided internally. Its president has been indicted for war crimes. Much of its army is in tatters, and hundreds of its factories, buildings, bridges, houses, roads and railway lines are in ruins.
Flanked on its northern and eastern borders by fellow former communist countries such as Hungary, Romania and Bulgaria that today have dreams of becoming a part of Europe’s economic integration, Yugoslavia is heading in the opposite direction.
Before the war began, but after 7 1/2 years of international economic sanctions, the G-17 economic research organization here estimated that it would take 29 years for Yugoslavia to reach the level of economic prosperity it had in 1989. Today, the think tank says, it will take 45 years — without a significant infusion of international aid.
The price tag for repairing the country after more than 10 weeks of NATO’s bombardment is estimated to be anywhere between $50 billion and $150 billion.