One of the most serious issues that arises when there is no power is, of course, food preservation. How do you prevent the spoilage of meat and other perishables?
Refrigerators that run on propane or kerosene are available. Portable battery-powered refrigerators are also available on the market. They can be charged using either your car battery or a solar power system.
If you live in the country, you can try your hand at gardening to grow the fruits and vegetables you need and store them in a root cellar.
You can also use pressure canning and/or water bath canning to extend the life of food without requiring refrigeration.
You can make your own ice using a bucket or large bowl with a smaller metal bowl inside filled with water, or you can use a propane refrigerator.
Ammonium nitrate should be used to fill the space between the two containers. The resulting heat conduction process will turn the water into ice.
Take it a step further by raising livestock like cows, chickens, and goats for eggs, meat, and dairy. To further reduce refrigeration needs, you can dehydrate, smoke, or ferment foods.