The other part of going off-grid is choosing appliances that don't use a lot of power & budgeting the power vs loads. I recently looked at some refrigerators for my van and found some that are small enough to fit between the seats for long road trips and use about 150W, which is low enough for my inverter to handle. If I need to, I'll just get a bigger inverter. In a home, some full-size fridges only draw 500W, but that's not a SubZero or anything of that size. Gas heat & water heat, LED lighting and a large enough inverter can be used with the new LiIon or AGM batteries without really breaking the bank. Larger boats have PV panels, battery banks, solar chargers and power management for the same purpose- staying powered while away from shore without needing to use the generator. Some use 6V batteries in series to make the needed voltage, some use 12V and connect them parallel. Lots of options, but I have been watching a lot of videos from Pacific Yacht Systems for info & ideas- the principals are basically the same, whether for a home or boat.\n\n\nI sent one of them an email asking for specifics, but I haven't seen a response.