I know most people who store solar & wind energy in batteries. Would storing it in something else like compressed air or a water tower.
I was thinking with the storage of compressed air or water tower to use small generators in individual rooms, although I don’t know the cost of using a large generator instead of several small ones. Another idea I had, was to use vehicle alternators with an inverter next to them for any AC needs, with this I would keep it as DC for USB ports with a DC voltage regulator of course.
I’m not sure the space needed to do this or if it would even be feasible in anything other than a new house.