There are some new reactor designs out there that run off old nukes and some that run off nuclear waste. They are also working on designs that don't melt down. The Voyager space probes, that have been operating since the 70s, are nuclear powered. NASA also developed nuclear rocket engines back in the day.
https://www.technologyreview.com/2024/01/18/1086753/advanced-nuclear-power/
Every form of energy is going to have some negatives, solar fields destroy biodiversity and leach heavy metals into the soil, turning forests into deserts. Coal kills the miners by 50. Windmills don't work very well, require a lot of oil and massive amounts of energy to produce, so they seldom produce any net energy and they kill a whole lot of birds.
Yes, i know about all these things, and also know about Nuclear Engineering.
They are not as safe as the media says they are. We don't even understand how metals degrade around them. We only have a sorta idea. But, literally, at any time, the containment vessel can just disintegrate.
And this isn't even talking about the psychic energy destruction.
There are many energy sources that are much better, safer, easier and they are almost banned from people experimenting with them.
Wave energy (all we need is a big paddle wheel, but "people" complain about the eye sore)
Geothermal Energy (but all the good sites are regulated, you can't do experiments yourself)
Real Solar (research paid for in the 70s, and then buried.)
Magnet motors. (people still think they don't exist, because there is not such thing as a perpetual motion device)