Start here
You don't need to buy everything at once.
Start with the failure that would create the biggest problem for you. Then work down the list. Preparedness built in order is achievable; preparedness built all at once rarely happens.
Step 01
Keep critical devices powered
Start with the short list of things that must stay on: modem and router, phone, laptop or computer, and essential lighting. Solving for a handful of low-draw devices is far easier — and far cheaper — than trying to back up a whole home.
Step 02
Plan for longer outages
Needs change when an interruption lasts hours instead of minutes. Think about how much stored capacity you'd actually need, what you'd stop running to stretch it, and which backup options make sense for your living situation.
Step 03
Have a way to replenish power
Stored energy runs out. Solar and generator-based replenishment are the two common ways to put energy back. Both have real constraints — placement, fuel, weather, maintenance. Follow manufacturer instructions and authoritative safety guidance; never run a generator indoors or in an enclosed space.
Step 04
Build internet & communication redundancy
A primary connection, an independent backup connection that doesn't share the same local infrastructure, and cellular or satellite options where they make sense for your location.
Step 05
Build a water reserve
A stored drinking-water reserve is one of the simplest layers to start. What's appropriate depends on your household, climate and local guidance — use authoritative sources for quantities and for anything involving treatment or purification.
Step 06
Add the rest of the essentials
Food, lighting, charging, communications, first-aid basics and whatever else your specific location calls for. This is the layer that keeps growing, and it's fine for it to grow slowly.
What I did first
My own order was step one, then step two, then the rest — because my income depends on staying online. Yours may start somewhere else entirely.
See my setup