With the summer storms, it is easy to imagine losing power at some time. This also has happened to us in winter. Even if power is out for only 3 days, it can mean a lot of spoiled food, uncomfortable living (cold/heat) and few options for cooking.
I can’t stress it more, you need to plan for these things. I am not speaking about a doom and gloom scenario, but an act of nature. If you don’t have a supply of batteries, candles or flashlights, you may need to barter for them from your neighbors.
If you can build something everyone wants, if you have supplies that no one has; you will be queen of the block. So if you need something, be prepared to offer something they might need in return. (When your power is out for longer than 3 days, this situation can happen).