I suggest reading the links in one of my previous posts to this thread.
And in case you have not heard, there is ongoing research in this area as well.
IMO, one of the most exciting and potentially promising areas of research is Fusion - where a major milestone has just been reached.
https://www.llnl.gov/news/national-...nt-puts-researchers-threshold-fusion-ignition
Fusion is still likely many years away from a viable commercial power plant, however, that development puts such a plant within reach maybe, for once, really within 20-years.
EDIT: Science is doing what science does. Researching, learning, and improving day by day. I am sure we all wish progress were faster, however, at least science is making progress.