> Continuous manufacturing processes have big problems with intermittent energy sources.
Intermittent energy sources are predictable in aggregate. A fairly modest amount of storage to smooth things out and you can pretty reasonably get above 50% solar and wind. Make up a large chunk of the balance with nuclear and hydro and you're pretty close to 100%.
The last 10% is obviously the hardest, but what's the excuse for countries still doing majority fossil fuels?
> China is building tens of nuclear power plants though.
Trouble being they're still operating ~1200 coal power plants.
Predictability will not get a plant through the night by itself. BTW, it's about 7 units of wind energy to 1 unit of solar energy plus significant overcapacity plus increase of the grid transmission capacity plus additional measures for grid stabilization (like synchronous condensers) to get to a "fairly modest amount of storage."
> Trouble being they're still operating ~1200 coal power plants.
Yeah, it's because of the above points.