The problem with my nuclear when mixed with renewables is that they take too long to turn on and off (think 12-24h), so they are not great complement solar and wind.

They are also very expensive, and take years to build, and decades to recoup the investment. Renewables are a lot cheaper, and can be built straight away, making their investments a lot less risky. They are also evolving faster than nuclear, snd becoming cheaper.

They are, S of today the cheaper power source in most of planet. It is expected that in a couple of years they won’t just be the cheapest, but they will be so cheap it will make economic sense to dismantle other powers plants and build solar/wind+ battery than to keep gas running.