It may help if you have NG running to your house because if you have 60 amp elec. service, any two of these elec. appliances running at the same time may use up your available capacity -
dryer, water heater, central AC, stove, oven.
200K BTU/hr of NG coming into your house and burned at 80% efficiency is equivalent to 48 kW of elec. used for heating. There may also be some central AC units that run on NG.