Hi All I have a granny flat that at present is completely separate electrically from the main house. That means it has it's own four meters plus off peak switch (Three phases and an off peak meter), and each of those meters are registered with the electricity supplier. The same exists for the main house. For what it's worth, the whole lot is in one big box on the side of the house, meaning I have a beautiful assembly of ten glass domes with 8 spinning disks I'm about to lose a tenant and want to be able to use the place myself, but am not interested in paying the daily supply charge twice. I'm having trouble explaining to an electrician what I want and am interested in the correct terminology help please: The goal is to run electricity to the granny flat through the main house meters when I want it. I would be great if I could flip between the two supply meters if possible, so when tenanted, set it to the specific flat meters, otherwise flip it to the main house metered supply. Is something like that possible? I've got impish visions of a large multi-ganged knife switch that would give be great pleasure. If not, the only way around would be to put sub-meters on the flat and force the tenant to use my supplier, with the sweetener that they wouldn't have to pay the daily supply charge, only the consumption. There's likely to be years between each tenanting event so the supply charge will add up a lot and my only real desire is to run the air-con occasionally to keep the oil distributed through out and minimise the long term seal leaks.