> disposing of power plant waste has never been a real problem.
Germany has been trying to find a location to safely dispose power plant waste for about 40 years or so. All the solutions so far didn't work out [1], they are still searching.
If you have a recommendation that actually works, I am sure they'd be happy to hear it...
[1] https://de.wikipedia.org/wiki/Endlager_(Kerntechnik)#Endlage...