Different plants have different ramps depending on where they are in their output curve, how hot they (or various parts) are, and how their operators want to r

Different plants have different ramps depending on where they are in their output curve, how hot they (or various parts) are, and how their operators want to run them (max ramp is generally higher than economic ramp) but, while it isn’t my business to know this stuff anymore, IIRC it is 2-5 MW/min for coal. This is ignoring the control loop.