And electric resistance heating is usually *terrible* compared to any number of available alternatives.
It represents a *huge* waste of exergy, when a heat pump (as you allude to) can produce several units of heat for one unit of electricity.
So, in summer it's all bad and in winter it;'s at least 75% bad. And that's ignoring (eg) CO2 and other emissions from the generation mix.
Can we stop with this "waste is good" meme?
An electric heater heated by electricity from nuclear or hydroelectric generators is in no way worse than the alternatives from a carbon and/or sustainability point of view.