It's not just trying to build solar capacity, it's building all solar capacity in the planet. Solar photovoltaics is essentially exclusively manufactured in China, as are e.g. EV batteries. China is definitely the leading country when it comes to solar and batteries, while maybe the peak of wind technology is in Europe. They're also innovating on nuclear and they approved to build the largest hydroelectric generation plant in the planet, producing twice as much as the current largest (three gorges dam, also in China?.

What's the point of comparing coal if not for CO2? Most other forms of pollution from coal are local, not global, the international debate here is on climate change, a western-world inhabitant has no right to say what China should be doing with the local pollution. The discussion on coal is started because of its horrendous climate change potential, which comes exclusively from its cumulative CO2 emissions.

But if you want to compare coal numbers, I ran the calculations using this source for US production and this source for China production. Downloading the CSVs from both sources, I get that the US has produced 85643270043 short tons of coal, which at 21GJ of energy per short ton amount to 496731 TWh, whereas China has extracted 617787 TWh, i.e. a bit below 25% more than the USA. Since China has 1411 mn inhabitants and the US has 340 mn inhabitants, i.e. China has 415% the population of the USA, China has along its existence as a country extracted about 1/3 as much coal per inhabitant than the USA.

So yeah, China would have to literally consume twice as much coal as it's already consumed to reach US values of per-capita historical cumulative coal consumption.

Now what will you come up with? Suddenly coal numbers don't matter anymore?