Those "hundreds" are nameplate capacities. For wind/solar you need to divide them by factor of 6 to even get to actual average production, as the capacity fact

Those "hundreds" are nameplate capacities. For wind/solar you need to divide them by factor of 6 to even get to actual average production, as the capacity factor of wind/solar is below 15%, whereas for nuclear plants it is greater than 90%. And of course average is not good enough for an electric grid, the variance is highly relevant. As my statistics professor used to quiet: if your left leg is standing in liquid nitrogen and your right leg is standing in boiling oil, you are enjoying a perfectly comfortable mean temperature. Variance matters. A lot. In an electric grid, you need to be able to cover minimum requirements even when solar and wind are having a bad day or night. China got their solar industry financed by German subsidies, and they have plentiful deserts with lots of sunshine. The Gobi desert is the place on earth with the most sunshine hours, apparently more than the Sahara(!). It would be insane for them to not take advantage of that to reduce their use of coal, now at what, 65%? But they also apparently think that safe, reliable and cheap nuclear energy is an important part of their energy mix, otherwise they wouldn't be planning on tripling their generating capacity, would they now?