Heat pump and solar is the real combination here. My father now managed to both have an electrical bill near 0 € and not spend any money on heating (and his ho

Heat pump and solar is the real combination here. My father now managed to both have an electrical bill near 0 € and not spend any money on heating (and his house is in the alps, not particularly known for mild climate). Of course there are times when the panel produce nothing and he has to draw current from the grid, but it balances out over the year.