So the Powerwall's got me thinking. I have an existing grid-tied solar system. I do not want to go off-grid, however, I would like to have a limited backup in case of emergencies or black outs. I don't need 7-10 kWh of storage or anything near that. All I need is to be able to power my fridge and maybe a couple appliances during the day and I don't care about losing power at night for emergency purposes. Question is am I best off paying for 7 kWh of storage that I don't really need or is there an alternative, maybe 1 kWh system that wouldn't power me into the night but at least it would let me power limited appliances during the day while I have solar production? Anyone else have experience in this area? Not DIY solutions like wk057, please.