Fuel oil contain 138,000 btu's per gallon. One kilowatt of electricity contains just under 4000 btu's. My on demand oil fired waterheater burns just over a gallon an hour and 88% efficient so it utilizes about 122,000 btu's per gallon. Electric heat is 100% efficient so you need about 30kWh of power with an equivalent heating equipment.

"Live Awesome!" - Kevin Carosa