Coal numbers I used were from S&P Global, and looked plausible enough for a rough estimate, in line with other stuff that turned up in a quick search. I should've said "approved" rather than "installed" in 2022, but that's the kind of pace they've been going at for a while.
You'll find lots of people predicting that total coal use in China will start to decline soon, of course. One of these days they'll be right.