Not in China. China has lots of coal but has to import gas, so they build coal peakers instead of gas peakers. China builds their coal plants a little diffe

Not in China. China has lots of coal but has to import gas, so they build coal peakers instead of gas peakers. China builds their coal plants a little differently so they spin up faster, but mostly they just use plain old weather prediction. 4 hour weather prediction is highly accurate, so they know far enough in advance to know when to spin up the coal.