Im sure no one will agree with me but upgrading to 200 is over kill for 95% of homes. I have electric heat, electric hot water heater, and every electric device you can think of. my electric bill get up to $500 in the winter. Only have 100 amps. Even if i did ever trip my 100 amp breaker. i still wouldnt want to upgrade because if i was using more than 100 amps at a time i would want my electric to turn off. It would be like my house giving me a slap in the back of the head telling me to use less electric.