Where in the Northeast? In New England, I'm paying 20 cents per kWHr all in. So it makes zero sense to have a heat pump or electric for heat. To press this point, when I use the Tesla calculator to see how much money I'd save driving a model S, it comes up with me losing money per mile vs driving my gas car.
In states where the electric utility isn't strangled in natural gas supply, it's not so expensive, so perhaps it would work. When I lived in southwest Virginia, I compared electric rates, all in and it was literally half what I pay in New England.