I'm an EE. If the grid goes down and I've got carte blanche, I could get some semblance of electricity up and running in under a week. (Which would enable you to plug in your standard appliances.) I could get solar USB chargers working in the same time frame.
First you get the electricity, then you get the... power... uh... then you get the wom... can I start over?
I know how to make beer.