> Chinese electric grid - big chunk produced with domestic fueled base-load fossil fuel power plants+nuclear power plants, as much hydro as you can build, little bit variable renewables

This is not an accurate representation of China's power generation mix. Yes, they are only about 40% total renewables thus far, but less than 5% of that is nuclear.

Their hydro contribution is double that of nuclear, and both wind and solar are drastically higher still.