Unless you have a whole house running electric baseboard heat...who here???...then you'd be mighty surprised how little amps you draw through a 200 amp electric service.
I've seen all the smancy fancy load calculators out there and they are all hedged towards selling you a Monster System...just in case.
Those calculators, most are outdated because...each generation of new appliances is being built more efficient, even light bulbs...remember how that was going to you a bunch...the household loads have been steadily coming down.
I venture a guess, if you come to a forum of people all discussing about coal...you ain't no electric energy hog.
I do have a whole house generator w/ auto x'fer. While I was installing it I added 2-current x'frms and 2-amp-meters built into the panel door. So I have been monitoring my current for over a decade...I ain't just making this all up.
Even for the person who is sorta borderline for generator wattage...just manage or prioritize what and when loads need to run.