It is simply not possible with the state of the grid and the electric generation capacity available, you'd have blackouts/brownouts and not enough electricity t

It is simply not possible with the state of the grid and the electric generation capacity available, you'd have blackouts/brownouts and not enough electricity to actually keep people warm due to the higher power requirements. Now, you'd still have that problem with heat pumps, because our grid is simply under-sized for it, but just not quite to the same extent.