Unless you live in a particularly hostile climate, house size alone won't change your consumption that much. Walls and floors don't draw power, appliances do.

Unless you live in a particularly hostile climate, house size alone won't change your consumption that much. Walls and floors don't draw power, appliances do. The big difference is that in Europe in general it is much more frequent to directly burn something in your house in order to produce heat. Something almost unheard of in Canada for instance.