Our kit was bought as an "independent from grid" backup as we seem to have increasing numbers of power outages during the year at our semi-rural home. We are currently running our fridge, chest freezer and internet 24/7 and other appliances as needed from strategically placed 3-pin wall sockets. Only the oven and water cylinder are on the grid now with capacity to switch lighting circuits over during power outages being schemed with a local electrical engineer! We love our GridFree system as the peace of mind is comforting. The easy install instructions were a doddle too. Thanks GridFree!