This is my prepper approach:
1. Find somewhere sun is abundant and weather is mild, with proven aquifer or lake.
2. Invest in solar and new battery technology (tesla?).
3. With sun and water, plants are easier to grow.
4. Then may be a pond in green house, aquaponic to harvest plant, shrimps and fishes.
5. Since one would not be dependent on grid, one can find somewhere away from population or potential mobs.
6. Food source would be free range chicken that live off the land, their eggs, fish, shrimps, vege. fruits, nuts etc.,
In this case, one needs to store say yearly supply of fish/shrimp feed, a water storage, a diesel storage, flour. Then pray the calamity would not involve long period of sun-less days.
