With battery storage is it feasible to isolate/disconnect, move and then reconnect at another location, or once certified and turned on is it considered part of a system that can't be divided. It would be adding a significant cost to enable 'movement' of energy if you didn't need storage before and would need to be charged ahead of time, but it seems similar to fuel where I could give gas to a neighbor. I wouldn't expect that kind of scenario to work for the vast majority of people, but on a remote island it could be the kind of solution that gets engineered to keep homes working when an official solution takes a long time to arrive.