Look into a grounded faraday cage and you can store alot if you have the money for a backup solar stem in it one can be built around you charge controller and inverter and batteries. It will protect them from a flare or emp. the solar panels would have to be a new set in storage. in this cage you can also put items that will burn out if this happens so you will have replacement parts this will only work for 1984 and below vehicles that did not have computers in them.
Alternate systems
ram pump
thermoelectric power
water turbine
wind turbine
geothermal heat
and it the going gets rough a old chevy alternator attached to a bicycle to charge a battery 8 }
Yes, that would work as well, but most people don't have the capital to be able to do that. Ourselves included. So we planned for a much simpler way of living that would still work and could be done by anybody. If the resources became available, then this is another option too.
The only non cost thing I can think of is that the ground below the frost line is at least above 32 degrees this will prevent any temp below that in winter and provide cooling in very hot areas. being in the NE USA the frost line is about 3 feet down.
For a style never using money you would have to be a hunter, fisher, gatherer, or a gatherer vegetarian. The American Indians were that but were nomads and moved to different hunter areas with the seasons and hunting gathering areas.
This style would be very hard in a set location for all locations are lacking in something, perhaps plant a white oak for flour and a walnut for protein will supplement but still hard to do.
The woods and land in its natural state is always lacking in something you will need you will have to terra form the land to the needs you have which will take many yrs.
For a no money lifestyle you will need to barter for the things you need, be it labor or item / food exchange.