Drying the laundry
Close to our domestic house there is a separate washing house, where we weekly take a sauna bath. This is particularly nice in the winter when we also can cool down in the snow after the bath. We use brushwood to heat the sauna, so the energy cost will be zero. Another use of the sauna is to dry laundry and we always plan the washing up to time with the bath. In summer though the laundry is dried in the wind, i e zero cost also then. And we do not need an electric dryer at all, not in winter and not in the other seasons.