I was surprised to learn how significant the heat added from thermal power plants can be for global warming. Without technological improvements a massive scale

I was surprised to learn how significant the heat added from thermal power plants can be for global warming. Without technological improvements a massive scale up of nuclear energy would probably be a bad idea. There are panels that can radiate heat directly to space though. So it has made me wonder if the nuclear power plants of the future could use such panels to radiate their heat directly to space. Essentially they’d be like reverse solar power plants, that also work at night. Wonder if it’s feasible and economical. Personally, I think the future will mainly just be solar, hydro, geothermal and energy storage. As world population decline we’ll end up having more than enough materials if we recycle them. Energy use will go drastically down. Question is if we need nuclear in the transition. And we should have nuclear R&D anyway as we need it for space exploration.