To put that into perspective: my de-facto father in law got a letter from his energy provider the other week. In Germany, by the way. He had been paying just over €250,- a month for gas. They informed him that as of Jan. the price "had to" go up to well over €1.000,- a month.
Our provider has informed us that the price for electricity is going to double as of January. Don't know what the gas price is going to do, but it wont be pretty.
Europe was, before the war in the Ukraine started, getting something over 60% of its gas from Russia. Most of it was going through pipes through the Ukraine. Also, I believe a large percentage of the diesel in Europe was coming from Russian oil. Given that diesel motors are almost the norm here, that is a not insignificant problem
So
Yes, this is true. One might argue that the european embargo on Russian oil is a foolish gambit in that context. On the other hand, Putin is financing the war to a large extent through fossil energy sales. I don't think anyone wants to keep financing his meglomania. Also, would it be wise to remain largely dependent for energy on a country whose leader has proven himself to be, to put it mildly, somewhat erratic?
Much more importantly, to keep the industry running so the economy doesn't collapse. Lights are good too...
It is worth noting that at least some of those coal power plants were supposed to be going out of service around now. Also, a couple of nuclear power plants that were scheduled to go off line will be kept going at least until the end of this winter.
The bloke who had to decide about that is Robert Habek, vice chancellor and minister for the economy and climate protection. He is a member of the green party.
In other words, it's all a bit complicated here right now.