The old nuclear power plants that are being shutdown in Europe and US are just not economical any longer.
The German decision to shut down all their nuclear plants was not based on economics, and they’ve been shutting down large plants with potentially decades of life left in them if refurbished.
The three nuclear plants they still have running are:
Isar-II, 1,485 MW, initial operation 1988, so with the typical 40 year initial lifespan, it should have another 6 years.
Emsland, 1,363 MW also initially powered up in 1988.
Neckarwestheim, 1,400 MW also initially powered up in 1988.
These are large, modern nuclear plants, operating with capacity factor of ~91% on average. It’s not an economic decision to shut them down at the end of this year, especially with the security factor of relying on Russian natural gas counted in, and the spiking cost of natural gas. If they have any sense, they’ll continue operating these past this year’s deadline to close them, until 2028, and possibly beyond.
Three other large modern plants were just shut down this winter:
Neckarwestheim, 1,440 MW, initial operation in 1986, so four years left on it’s typical lifespan
Grohnde, 1430 MW, initial operation 1984, two years lifespan left.
Gundremmingen C, 1284 MW, initial operation 1984. Germany’s last operating boiling water reactor type.
I don’t know how far they’ve gotten on decommissioning these, but they could probably still be refurbished and brought back for another couple decades of use. The Gundremmingen reactor, being an older design, should probably just be left shut down.